Instruction Manual PN pH/rev.C April Model 2081 ph. Smart Microprocessor Analyzer

Transcription

1 Instruction Manual PN pH/rev.C April 2003 Model 2081 ph Smart Microprocessor Analyzer

2 ESSENTIAL INSTRUCTIONS READ THIS PAGE BEFORE PROCEEDING! Rosemount Analytical designs, manufactures, and tests its products to meet many national and international standards. Because these instruments are sophisticated technical products, you must properly install, use, and maintain them to ensure they continue to operate within their normal specifications. The following instructions must be adhered to and integrated into your safety program when installing, using, and maintaining Rosemount Analytical products. Failure to follow the proper instructions may cause any one of the following situations to occur: Loss of life; personal injury; property damage; damage to this instrument; and warranty invalidation. Read all instructions prior to installing, operating, and servicing the product. If this Instruction Manual is not the correct manual, telephone and the requested manual will be provided. Save this Instruction Manual for future reference. If you do not understand any of the instructions, contact your Rosemount representative for clarification. Follow all warnings, cautions, and instructions marked on and supplied with the product. Inform and educate your personnel in the proper installation, operation, and maintenance of the product. Install your equipment as specified in the Installation Instructions of the appropriate Instruction Manual and per applicable local and national codes. Connect all products to the proper electrical sources. To ensure proper performance, use qualified personnel to install, operate, update, program, and maintain the product. When replacement parts are required, ensure that qualified people use replacement parts specified by Rosemount. Unauthorized parts and procedures can affect the product s performance and place the safe operation of your process at risk. Look alike substitutions may result in fire, electrical hazards, or improper operation. Ensure that all equipment doors are closed and protective covers are in place, except when maintenance is being performed by qualified persons, to prevent electrical shock and personal injury. About This Document This manual contains instructions for installation and operation of the Model 2081 ph Microprocessor Transmitter. The following list provides notes concerning all revisions of this document. Rev. Level Date Notes A 8/01 Added CE certification info B 7/02 Updated multiple drawings C 4/03 Updated CE certification info Emerson Process Management Rosemount Analytical Inc Barranca Parkway Irvine, CA USA Tel: (949) Fax: (949) Rosemount Analytical Inc. 2003

3 MODEL 2081 ph TABLE OF CONTENTS MODEL 2081 ph MICROPROCESSOR TRANSMITTER TABLE OF CONTENTS Section Title Page 1.0 INSTALLATION Unpacking and Inspection Mechanical Installation Wiring Jumper Settings Hazardous Locations - Explosion Proof Installations Hazardous Locations - Intrinsically Safe Installations QUICK START-UP PROCEDURE General Set-Up Instrument Temperature Standardization Two-Point Calibration Current Output Check DESCRIPTION OF CONTROLS General Menu Selection Value Adjustment RANGE CONFIGURATION START UP AND CALIBRATION General Temperature Calibration Buffer Calibration ph Standardization ph Glass Slope Hold Mode for Maintenance Sensor Maintenance KEYBOARD SECURITY THEORY OF OPERATION DIAGNOSTICS AND TROUBLESHOOTING Diagnostics Troubleshooting DESCRIPTION AND SPECIFICATIONS Features Functional Specifications Performance Specifications Physical Specifications Recommended Sensors Ordering Information Model 2081 ph Replacement Parts and Accessories RETURN OF MATERIALS i

4 MODEL 2081 ph TABLE OF CONTENTS TABLE OF CONTENTS CONT D. Figure No. Title LIST OF FIGURES Page 1-1 Model 2081 ph Power and Sensor Wiring Sensor Wiring Details for use with 2081 ph Model 2081 ph Jumper Settings BASEEFA Label for Instrinsically Safe Installation Explosion Proof System Installation Schematic (FM) Intrinsically Safe System Installation Schematic (FM) Page 1 of Intrinsically Safe System Installation Schematic (FM) Page 2 of Intrinsically Safe System Installation Schematic (CSA) Wiring Setup Button Use Menu Description Model 2081 ph Jumper Settings Bench Check with preamp Bench Check without preamp LIST OF TABLES Table No. Title Page 8-1 Fault Mnemonics RTD Resistance Values Sensor Input V. ph at Four Temperatures Voltage Input to Transmitter Troubleshooting Guide ii

5 MODEL 2081 ph SECTION 1.0 INSTALLATION SECTION 1.0 INSTALLATION 1.1 UNPACKING AND INSPECTION. Inspect the transmitter for shipping damage. If damaged, notify the carrier immediately. Confirm that all items shown on the packing list are present. Notify Rosemount Analytical if items are missing. If the transmitter appears to be in satisfactory condition proceed to Section 1.2. NOTE Save the original packing cartons and materials as most carriers require proof of damage due to mishandling. 1.2 MECHANICAL INSTALLATION General. The transmitter may be installed in harsh environments. However, it should be installed in an area where sources of extreme temperature fluctuation, vibration and shock are at a minimum or absent. Select an installation site that (1) permits the use of the standard cable lengths (unless a J-box is used), (2) is easily accessed by operating and maintenance personnel, and (3) is at least 12 inches (.3 m) from sources of high voltage Mounting. The transmitter may be mounted on a flat surface using the two threaded mounting holes located on the bottom of the transmitter or through the use of an optional 2-inch pipe/wall mounting bracket, Code 07 (Figure 1-1). NOTE The meter may be installed in 90-degree increments for easy viewing. Remove the four screws holding the meter in place and change the meter to the desired angle. Plug in the display and tighten the four screws. 1.3 WIRING. The transmitter is equipped with two 1/2- inch NPT conduit openings, one on each side of the housing. One is for the power supply/signal wiring and the other is for the sensor wiring. To prevent moisture from entering the housing, the use of weathertight cable glands or conduit is recommended. If conduit is used, it should be positioned to prevent condensation from draining into the housing. Conduit connections on the transmitter housing should be plugged and sealed to avoid moisture accumulation in the terminal side of the housing. CAUTION If the connections are not sealed, the transmitter should be mounted with the electrical housing positioned downward for drainage. Wiring should be installed with a drip loop, and the bottom of the drip loop should be lower than the conduit connections or the transmitter housing. The signal wiring should be twisted pairs for best results. The twisted pairs should also be shielded and grounded. The best place to ground the loop is at the negative terminal of the power supply. Do not ground the signal loop in more than one point. The transmitter case shall be grounded. Signal or sensor wiring should never be run in the same conduit or open tray as AC power or relay actuated signal cables. Keep signal or sensor wiring at least 12 in. (.3 m) from heavy electrical equipment. NOTE For best EMI/RFI protection the output cable should be shielded and enclosed in an earth grounded rigid metal conduit. Connect the cable s outer shield to the ground terminal provided next to TB2, Figure 1-1. The sensor cable should also be shielded. Connect this outer shield to earth ground as in the instructions above. If the outer shield is braided an appropriate metal cable gland fitting may be used to connect the outer braid to earth groud via the instrument case. A new addition to the suite of tests done to ensure CE compliance is IEC This is a surge immunity test that simulates overvoltages due to switching and lightning transients. In order to meet the requirements of this test, additional protection must be added to the instrument in the form of a Transient Protector such as the Rosemount model 470D. This is a 3½-inch tube with ½-inch MNPT threads on both ends. Inside the tube are gas discharge and zener diode devices to limit surges to the transmitter from the current loop. No additional protection is needed on the sensor connections. 1

6 MODEL 2081 ph SECTION 1.0 INSTALLATION NOTE For RFI/EMI protection, the power supply/signal wiring and sensor wiring must be shielded, preferably in metal conduit, and the shields terminated to earth ground Sensor Wiring. The sensor wiring terminals are located on the side of the housing opposite of the LCD meter. Remove the housing cover to gain access to the terminals. Pass the sensor cable through the transmitter s conduit opening. Connect the sensor wiring to TB1 terminals 1 through 12 as shown on Figure 1-1. NOTE Sensors are supplied with a standard cable length of 10 feet (3.0 m) or 15 feet (4.5 m). If the standard cable length is not sufficient for the planned installation, the use of a junction box with extension cable is strongly recommended. Do not exceed 1000 feet (305 m) total cable length from the sensor to the transmitter Integral Preamplifier Jumper. If direct input from a sensor without a preamplifier is used, refer to Figure 1-1 and Figure 1-2 for sensor wiring. The sensor cannot be more than 15 (4.5m) feet from the transmitter for this option. Many ph sensors without preamps come with BNC connectors, but the Model 2081 ph only takes bare wire connections. To make the sensor compatible, cut off the BNC and terminate it according to Figure Power and Signal Wiring. The power and signal wiring terminal is TB2 terminals 1 through 4 as shown in Figure JUMPER SETTINGS General This section describes how to set the jumpers on the CPU board for the following: Fault Mode Output. The default output of the transmitter during a fault condition is determined by the position of the default current output jumper located on [JP3] (refer to Figure 1-3). The output can be set to default either: - below 4mA - JP3 with jumper - above 20mA - JP3 without jumper (factory setting). Place jumper on one post only to prevent misplacing it. The following are possible faults. See Section 8.0 for further information. Fault Mnemonics SLP FAIL - Electrode slope out of limits ELEC FAIL - Transmitter electronics failure rnge LOOP - ph value outside 4-20 ma range points tenp Lo - Temperature too low or RTD shorted tenp Hi - Temperature too high or RTD open Fifty Hz Operation. See Figure 1-3. Although the 2081 uses direct current, a jumper selection may be made to help reduce electrical noise from the operating environment. North America uses 60 Hz ac power, while Europe uses 50 Hz ac power. 50 Hz - JP1 with jumper 60 Hz - JP1 without jumper (factory setting). Place jumper on one post only to prevent misplacing it Security. Also explained in Section 6.0. See Figure 1-3. Disable 2081 push buttons - JP4 without jumper. Place jumper on one post only to prevent misplacing it. Enable 2081 push buttons - JP4 with jumper (factory setting). CAUTION The circuit board is electrostatically sensitive. Be sure to observe handling precautions for static-sensitive components. 1. Output value in fault (alarm) mode 2. 50/60 Hz operation 3. Security 2

7 MODEL 2081 ph SECTION 1.0 INSTALLATION 1.5 HAZARDOUS LOCATIONS-EXPLOSION PROOF INSTALLATIONS. In order to maintain the explosion proof rating for installed transmitter, the following conditions must be met. 1. The transmitter enclosure covers must be on hand tight and the threads must not be damaged. NOTE These covers seat on rings which serve to provide a dust proof enclosure for Class II and Class III installations. 2. Explosion proof "Y" fittings must be properly installed and plugged with a sealing compound to prevent explosive gases from entering the transmitter. CSA has determined that the transmitter housing is "Factory Sealed". Installation of "Y" fittings and the use of sealing compound is not required for CSA approved Explosion Proof installations. 1.6 HAZARD LOCATIONS - INTRINSICALLY SAFE INSTALLATIONS. See Figure 1-4. To secure and maintain intrinsically safe installations for the appropriate approval agency, the following conditions must be met: 1. Code 67 must be specified when ordering F.M. (Factory Mutual) units. Approved Entity installation must be in accordance with Drawing Number (see Figure 1-6 and Figure 1-7). 2. Code 69 must be specified when ordering C.S.A. (Canadian Standards Association) units. Installation must be in accordance with Drawing Number (see Figure 1-8). NOTE Do not install sealing compound until all field wiring is completed. CAUTION Sealing compound must be installed prior to applying power to the transmitter. 3. If one of the conduit connections on the housing is not used, it must be closed with a threaded metal plug with at least five threads engaged. 4. The serial tag cover on the external ZERO and SPAN adjustments must be in place. 6. Explosion proof installation must be in accordance with Drawing Number (see Figure 1-5). 5. For sensors in hazardous area locations, explosion proof junction boxes can be provided to house the preamplifier. This does not warrant the ph or ORP sensor explosion-proof. Maximum safety can be achieved by installing an intrinsically safe system where Hazardous Area requirements must be met. 3

8 MODEL 2081 ph SECTION 1.0 INSTALLATION WHEN INCH AND METRIC DIMS ARE GIVEN MILLIMETER INCH DWG. NO. REV E FIGURE 1-1. Model 2081 ph Power and Sensor Wiring 4

9 MODEL 2081 ph SECTION 1.0 INSTALLATION WHEN INCH AND METRIC DIMS ARE GIVEN MILLIMETER INCH DWG. NO. REV J FIGURE 1-2. Sensor Wiring Details For use with 2081 ph 5

10 MODEL 2081 ph SECTION 1.0 INSTALLATION DWG. NO REV. FIGURE 1-3. Model 2081 ph Jumper Settings FIGURE 1-4. BASEEFA Label for Intrinsically Safe Installation DWG. NO. REV A 6

11 MODEL 2081 ph SECTION 1.0 INSTALLATION DWG. NO. REV A FIGURE 1-5. Explosion Proof System Installation Schematic (FM) 7

12 MODEL 2081 ph SECTION 1.0 INSTALLATION DWG. NO. REV A FIGURE 1-6. Intrinsically Safe System Installation Schematic (FM) Page 1 of 2 8

13 MODEL 2081 ph SECTION 1.0 INSTALLATION DWG. NO. REV A FIGURE 1-7. Intrinsically Safe System Installation Schematic (FM) Page 2 of 2) 9

14 MODEL 2081 ph SECTION 1.0 INSTALLATION DWG. NO. REV A FIGURE 1-8. Intrinsically Safe System Installation Schematic (CSA) 10

15 MODEL 2081 ph SECTION 2.0 QUICK START-UP PROCEDURE SECTION 2.0 QUICK START-UP PROCEDURE 2.1 General. The 2081 ph is shipped from the factory in a configuration that is acceptable in many applications. The instrument is set-up as follows: Measures from 0-14 ph 0 ph will correlate to a 4 ma current output 14 ph will correlate to a 20 ma output Temperature readings will be in degrees C Automatic temp. compensation will be on External preamplifier If this described set-up is compatible with your application, you can utilize the following Quick Start-up instructions, below, to expedite the commissioning and calibration of your instrument. Otherwise, follow the detailed instructions in Section 3.0 to set the desired ph range, Section 4.0 to start-up, and Section 5.0 to calibrate your instrument. 2.2 Set-up instrument. Connect a power supply, current meter and an appropriate sensor to the 2081 Transmitter, as illustrated in the figure below. FIGURE 2-1 Wiring Setup Connect loop power: -wire power supply to the 2081 (TB2) -adjust supply to approx. +24VDC Model 2081 (short cover removed) View of Interface PCB Power Supply ma + + COMM TEST + TB Loop + Loop TB1 * Install JP1 if internal preamplifier is used. Remove if sensor or junction box preamplifier is used Connect Sensor to 2081: - wire sensor to TB1 as illustrated below *Black to TB1-1, instead of TB1-2, if unit has Black (mv-in) JP1 in place. Green (+5) White (RTD IN) Clear (RTD COM) SENSOR Connect current meter: -wire meter to TEST connections to read ma output (+ to +) Red (RTD SEN) Prep Sensor for calibration: (Refer to Sensor Manual) Examples: Sensor must have a liquid junction and glass electrode installed -399 Sensor requires removal of red boot cover, only 11

16 MODEL 2081 ph SECTION 2.0 QUICK START-UP PROCEDURE 2.3 Temperature Calibration. Since ph value is related to the temperature of the process, the 2081 transmitter temperature readings should be checked for matching with your standardized temperature measuring sensor. To do so: Place your sensor connected to the 2081 transmitter in a beaker of process material. Place your standardized temperature measuring instrument (thermometer) into the same solution Allow a minimum of 10 to 15 minutes for the transmitters sensors to acclimate to the solutions temperature. NOTE The 2081 has two pushbuttons on its side for manual operation. Keypress combinations allow you to activate software menus to display and enter information. See Figure Access the temperature adjustment feature of the 2081 by pressing both push buttons at the same time. Display will scroll through the menu selections When tadj appears on the display, release both buttons. Display will show the current temperature read by the RTD built into the sensor connected to the transmitter. 1. If this reading matches your standardized measuring device within your tolerances, go on to Section 2.4 (Two-Point Calibration). 2. If this reading is not close enough to your standardized temperature measuring instrument, refer to steps 1 through 4 in Section 5.2 Temperature Calibration, to set the temperature reading of the sensor to your standard temperature measuring instruments value. Push Buttons (side view) 1 2 OUT 1 2 IN Û Û Both buttons in: 1. Scrolls through menu if held. 2. Enters new value into memory if only held momentarily Display 025.C 5 Û Number one in, to scroll through digit values. IN 2081 Display 025.C IN Û Number two in, to select digit position. FIGURE 2-2. Button Use. 12

17 MODEL 2081 ph SECTION 2.0 QUICK START-UP PROCEDURE To 2081 ph Sensor Buffer #1 (i.e., 4 ph) 2081 Display 3.95 = Buffer # ph? 2.4 Two-Point Calibration Sensor should still be in the first buffer solution. The sensor is placed in a buffer solution and the buffer value is entered into the The sensor is placed in a different buffer solution and that value is entered into the The 2081 will calculate the new slope from these values Compare the 2081 ph reading to the buffer value that the sensor is in. If the display doesn't read the buffer value, then enter the buffer value into the 2081, using the following directions. If display reading is correct, skip to Section 2.4.3, step 5. Push Buttons (side-view) IN Û Û Ï 2081 Display Scrolling Access the buf1 feature on the 2081: 1. Press both push buttons in; display will scroll through menu selections 2081 Display buf1 > > OUT 2081 Display When display reads buf1 ; release the buttons; display reads last buffer value entered. Far right digit will be flashing, indicating that you may enter data Display > > 2 IN Û 2081 Display Enter the buffer ph value that the sensor is in: 1. Press button #2 to select digit position to modify. Selected digit will be flashing. Holding the button in will cause selected position to shift to the left, then back around again. 2. Release button when the desired digit is flashing Display IN Û > > Display Press button #1 to change digit's value. Holding the button in will cause the selected digit to increase in value, then back around again. 4. Release the button when the desired digit value is displayed Display 4 > Display 3.95 > > 5. Press both buttons in, briefly, to enter the new value into memory. The 2081 will default to the ph reading. The 2081's ph reading will not change until the buf2 value is entered into memory. at the end of Section

18 MODEL 2081 ph SECTION 2.0 QUICK START-UP PROCEDURE ph Sensor Point Calibration (cont.) Water (DI) Rinse Sensor Ï Buffer #2 (i.e., 10 ph) Remove the sensor from buffer #1. Rinse Sensor in water (Deionized), then place in the 2nd buffer solution. The sensor is placed in the second buffer solution and that buffer value is entered into the The 2081 will calculate the new slope from the two buffer values Display = Buffer # ph? Compare the 2081 ph reading to the buffer value that the sensor is in. If the display doesn t read the buffer value, then enter the buffer value into the 2081, by performing Sections ; substituting the buffer #2 value for the buffer # I value. If display reading is correct, go to Section 2.4.3, step 5. ph Value + Buffer Value #1 + Buffer Value # calculates the sensor slope (ideal is 59.1 mv/ph) mv reading After the buffer value #2 value is entered into the 2081, it calculates the sensor s slope. The transmitter and sensor are now calibrated. Upon installation into the process, a Standardization should be performed to improve the reading accuracy (refer to Section 5.4 after completing the Quick Start-up procedure). Leave the sensor in buffer # Current Output Check ma output Buffer Value Full-scale Range = ( ) X ma output ph = ( ) X = ma ±.16 Check the current output of the transmitter; sensor should still be in buffer #2 (i.e., 10 ph) Calculate the proper current output for the buffer being used, with the adjacent formula. Example: Sensor is acclimated in 10 ph buffer. Transmitter is factory configured for 0-14 ph full-scale range, and 4-20 ma output. Current output should read ma. ma output Buffer Value Full-scale Range = ( ) X Remove the sensor from buffer #2. Rinse Sensor in water(deionized), then place in the 1st buffer solution. Check the current output with the sensor acclimated to buffer #1. ma output ph = ( ) X = 8.57 ma ± Calculate the proper current output for the buffer being used, with the ma output formula. Example: Sensor is acclimated in 4 ph buffer. Transmitter is factory configured for 0-14 ph full-scale range, and 4-20 ma output. Current output should read 8.57 ma. NOTE If the ph buffer readings are accurate and the current output values are within tolerance, then the unit is calibrated and ready to be placed into service. 14

19 MODEL 2081 ph SECTION 3.0 DESCRIPTION OF CONTROLS SECTION 3.0 DESCRIPTION OF CONTROLS 3.1 GENERAL. Nearly all functions of the transmitter are accessed through the dual push buttons. The transmitter uses no potentiometers. 3.2 MENU SELECTION. The dual push buttons are located on the side of the transmitter. Press and hold both buttons to display the transmitter menu items. See Figure 3-1. The display will show each item for about one second then scroll to the next item. It will continue to loop through the items until one is selected. To select an item, release both push buttons when the desired item is displayed. NOTE When no push button is pressed for a period of 60 seconds, the transmitter defaults to reading ph. If the push buttons are accidentally released (e.g. buf2) and this would upset the process, escape by waiting 60 seconds for the transmitter to default to the ph reading Display Submenu. Functionality of the display submenu (disp) is the same as the main menu. To enter the main menu, release both buttons on disp and the display will read PH. To read the ph value in the submenu when PH is displayed, press and quickly release both push buttons. To escape from the submenu, simply depress both buttons and hold to enter the main menu or wait 60 seconds for a ph reading Display Flags and Hold Mode. The transmitter will activate a flag on the LCD corresponding to the labeled units when appropriate. When the transmitter is in hold output mode a flashing flag will appear on the middle right hand side of the display and HoId will flash periodically. The output will remain at the last process value. To remove the hold mode, scroll to HoId again and release both buttons. 3.3 VALUE ADJUSTMENT. Selection of a menu item that has a user-adjustable value will cause a numeric display with the right-most digit flashing. Depressing and holding push button #1 will cause the number flashing to increment upwards, looping back to zero. Depressing and holding push button #2 will shift the flashing cursor to the next decade, looping back to the right most decade. Once the number is correctly entered, depressing both buttons briefly will enter the displayed value into memory. The transmitter will return to reading ph. MAIN DISPLAY MENU SUBMENU disp Ê PH ph value Std Standardize ph inpt mv input HoId Initiate and remove hold output mode curr Output in ma buf1 Buffer #1 DIo Output in % of full scale buf2 Buffer #2 DC Temperature, C SLP Electrode slope (mv/ph unit) DF Temperature, F LoPH 4 ma range point HiPH 20 ma range point tadj Standardize temperature, C Press and hold both buttons auto scrolls through main menu and submenu. Release buttons to select item. Push button #1: Press and hold auto scrolls digits. Push button #2: Press and hold auto shifts decades. Enter a value: Depress both buttons briefly. FIGURE 3-1. Menu Description 15

20 MODEL 2081 ph SECTION 4.0 RANGE CONFIGURATION SECTION 4.0 RANGE CONFIGURATION 4.1 RANGE CONFIGURATION. Corresponding ph values for output zero (4 ma) and full scale (20 ma) are user selectable. The factory values are 4 ma = 0 ph and 20 ma = 14 ph. A. Output Zero (4 ma) LoPH 1. Depress and hold both push buttons. The display will begin to auto scroll. 2. Release both keys when LoPH is displayed. The present 4 ma ph value in memory will be displayed with the last digit flashing. 3. Depress and hold push button #1 (scroll) and #2 (shift) as needed to display the desired ph value. 4. Enter the value into memory by depressing both push buttons briefly. The display will return to displaying the present ph value. B. Full Scale (20 ma) HiPH 1. Depress and hold both push buttons. The display will begin to auto scroll. 2. Release both keys when HiPH is displayed. The present 20 ma ph value in memory will be displayed with the last digit flashing. 3. Depress and hold push button #1 (scroll) and #2 (shift) as needed to display the desired ph value. 4. Enter the value into memory by depressing both push buttons briefly. The display will return to displaying the present ph value. NOTE For a reverse output, enter the higher value for LoPH, and the lower value for HiPH. NOTE If the factory values are to be used, the Quick Start-up Procedure may be used. See Section

21 MODEL 2081 ph SECTION 5.0 START-UP AND CALIBRATION SECTION 5.0 START-UP AND CALIBRATION 5.1 GENERAL. The sensor must be wired to the transmitter for calibration. See the appropriate sensor manual for additional instructions relating specifically to the sensor. 5.2 TEMPERATURE CALIBRATION. For the most accurate temperature compensation, the temperature reading may need adjusting. The following steps should be performed with the sensor in a grab sample or process of known temperature. Calibrate at or near the process temperature for greatest accuracy. 1. Depress and hold both push buttons simultaneously to enter the transmitter menu. The transmitter will auto scroll through the menu items. 2. When the display shows tadj, release both buttons. The display will show the present temperature value in degrees Celsius with the last digit flashing. The tenths digit will alternate between a value and C. (The temperature can only be standardized in F by using the Model 275 for configuration). 3. Compare the displayed reading with a calibrated temperature reading device. If the reading requires adjustment, proceed to step 4. Otherwise, depress both push buttons briefly to accept the displayed value. 4. Depress and hold push buttons #1 (scroll) and #2 (shift) as needed to display the desired temperature value. 5. Enter the correct value into memory by depressing both push buttons briefly. The display will return to displaying the present ph value. 5.3 BUFFER CALIBRATION. The two buffer calibration will calculate the slope (efficiency) of the ph sensor. (Computed limits: 47.3 to 59.9 mv/ph). 1. Obtain two ph buffer solutions with values at least two ph units apart. Unopened buffers have a shelf life of about a year, and once opened, should ideally not be reused because of possible contamination. 2. Depress and hold both push buttons to scroll through the menu items to HoId, then release both buttons to place the transmitter in hold status ( HoId will periodically flash). This will maintain the output at the last process value read by the transmitter and activate the hold flag on the middle right hand side of the display. 3. Remove the sensor from the process and clean it if necessary. Shake the sensor down to remove entrapped air bubbles from the measurement tip. 4. Place the sensing portion of the ph sensor into a beaker containing the first buffer solution. 5. Allow the ph reading to stabilize, note the sensor temperature from the display submenu, then note the value at the buffer at that temperature. Buffer ph values of various temperatures are located on most buffer bottles. For example, at 5 C (41 F) a typical buffer is 6.95 ph but at 25 C (77 F) it is 6.86 ph. See Note on Buffers on the following page. 6. Depress and hold both push buttons to scroll through the menu items to buf1 then release both push buttons. The display will show the ph value currently in buf1 memory. 7. Depress and hold push button #1 (scroll) then #2 (shift) as needed to display the buffer1 ph value. 8. Enter the buffer value (at the sensor temperature) into memory by depressing both push buttons briefly. The transmitter will memorize this value but will not change the calibration until buffer #2 is entered. The display will return to reading the present ph value. 9. Remove the sensor from the buffer, rinse and gently dry it. 10. Place the sensing portion of the ph sensor into a beaker containing the second buffer solution. 11. Follow the instructions in steps 5 through 8 for buffer 2 ( buf2 ). After entering the buf2 value the transmitter will calculate the electrode slope and standardize the reading. 12. Return the sensor to the process. 13. Depress and hold both push buttons to scroll through the menu items to HoId, then release both push buttons to remove the transmitter from hold status. The hold flag will disappear and the display will stop flashing HoId. NOTE To observe the calculated slope value follow the instructions in Section

22 MODEL 2081 ph SECTION 5.0 START-UP AND CALIBRATION NOTE ON BUFFERS The ph of buffer solutions changes with temperature. This is very important to know if you are calibrating in a very hot or cold environment and you need good accuracy. Rosemount Analytical recommends use of the following NIST (National Institute of Standards and Technology - formerly NBS) buffers: 5.4 ph STANDARDIZATION. After a buffer calibration, the system should be standardized on line by taking a grab sample. Standardization will not calculate the electrode slope, but will improve system accuracy. 1. Take a grab sample which is as close to the sensor as possible. Note the transmitter ph reading at this time. C F ph ph ph Using a calibrated ph instrument, determine the ph of the process or grab sample. The reading must be temperature compensated to 25 C (77 F) if the sample is not at 25 C. Note this value. 3. Calculate the difference by subtracting the ph value noted in Step 1 from the ph value found in step Depress and hold both push buttons to scroll through the menu items to Std, then release both push buttons. The display will show the present ph value with the last digit flashing. 5. Correct the ph standardize value for time lag by adding the difference calculated in step 3 to the amount displayed on the transmitter. Example: If ph in step 1 is 2.3 and ph in step 2 is 2.8, the difference noted in step 3 would be +.5 ph. The present transmitter ph value would be increased by.5 ph. 6. Depress and hold push button #1 (scroll) and #2 (shift) as needed to display the ph value calculated in step Enter the value into memory by depressing both push buttons briefly. The transmitter will return to displaying the present ph value. 5.5 ph GLASS SLOPE. The slope (efficiency) of the ph glass electrode can be entered directly if known (slope limits: 47.3 to 59.9 mv/ph). As the electrode ages the slope will decrease. 1. Depress and hold both push buttons to scroll through the menu items to SLP, then release both buttons. The display will show the present slope with the last digit flashing. 2. Depress and hold push button #1 (scroll) and #2 (shift) as needed to manually enter a slope value, if desired. 3. Enter the value into memory by depressing both push buttons briefly. The transmitter will return to displaying the present ph value. 5.6 HOLD MODE FOR MAINTENANCE. Before performing maintenance of the sensor, or buffer checks, the transmitter should be placed in the "Hold" mode. This mode of operation maintains the output current at the last process value. To initiate "hold " mode: 1. Depress and hold both push buttons simultaneously until "Hold" is displayed on the screen. 2. Release both buttons. a The "Hold" flag will flash, and b. The display will show "Hold" every two seconds to confirm the hold status. 18

23 MODEL 2081 ph SECTION 5.0 START-UP AND CALIBRATION To place the transmitter back into normal operation, (remove from "Hold" mode) 1. Depress and hold both push buttons simultaneously until "Hold" is displayed on the screen. 2. Release both buttons. a. The "Hold" flag will stop flashing. b. The display will stop showing "Hold" every two seconds. c. The transmitter output current will return to normal operation. 5.7 SENSOR MAINTENANCE. Always calibrate after cleaning or repair of the ph sensor. Always place transmitter into the "Hold " mode of operation while preforming any maintenance to the sensor to avoid loss of process control. Always return transmitter to normal operation after installing the sensor back into the process. NOTE To clean the electrode, rinse with distilled water or dilute acid/base, then gently dry with a clean tissue. The electrode should not be rubbed or abraded because this increases the electrostatic forces and thus the response time of the electrode, and it also rapidly ages the delicate electrode gel layer. If possible, the stirring or flow velocity past the electrode should be increased rather than rubbing or brushing the electrode. Also, see the appropriate sensor manual for any additional instructions. 19

24 MODEL 2081 ph SECTION 6.0 KEYBOARD SECURITY SECTION 6.0 KEYBOARD SECURITY GENERAL. This feature allows the user to disable the dual push buttons on the transmitter, preventing accidental or unauthorized changes to the calibration and configuration via the transmitter. HART communication is not effected by this change. Perform the following steps to disable the push buttons: CAUTION The circuit board is electrostatically sensitive. Be sure to observe handling precautions for static-sensitive components. 1. Remove the display side cover. 2. On the CPU board (Figure 6-1. Model 2081 ph jumper settings), move JP4 to one post only. NOTE For easy access, the electronics assembly may be removed by pulling the assembly straight out. 3. Replace the display side cover. CAUTION A minimum of seven cover threads must be engaged in order for the transmitter to meet explosion-proof requirements. Replace the jumper to enable push button operation. To fault Hi, no shorting bar should be installed. JP1: Selects for 50 or 60 Hz operating environment. (Allows better noise reduction for A/D convertor). In a 60Hz environment, no shorting bar is used. JP1 JP3 U1 U2 JP4 U3 JP4: The two push buttons will have no effect if this shorting bar is removed. JP3: Selects fault condition current loop output level (Hi=21.75/Lo=3.80mA) FIGURE 6-1. Model 2081 ph Jumper Settings DWG. NO REV. 20

25 MODEL 2081 ph SECTION 7.0 THEORY OF OPERATION SECTION 7.0 THEORY OF OPERATION GENERAL This section is a general description of how the transmitter operates. This section is for those users who desire a greater understanding of the transmitter s operation. The measurement of the process ph is accomplished by the use of two electrodes within the sensor. The glass electrode is ph sensitive and generates a high impedance millivolt potential directly proportional to the process ph. The reference electrode is a second half cell that completes the circuit via a liquid junction. The high impedance signal is preamplified at or near the sensor to allow a stable noise-free signal that can be transmitted up to 1000 feet. The transmitter also measures the process temperature via a platinum 100 ohm RTD imbedded in the sensor. Advanced circuitry is used to eliminate errors due to changes in cable resistance. The transmitter uses this temperature measurement to compensate for the changes in the sensor s millivolt output caused by process temperature change. 21

26 MODEL 2081 ph SECTION 8.0 DIAGNOSTICS AND TROUBLESHOOTING SECTION 8.0 DIAGNOSTICS AND TROUBLESHOOTING 8.1 DIAGNOSTICS. The transmitter has a diagnostic feature which continuously monitors for fault conditions that would cause an error in the measured ph value. A fault condition is reported to the current loop as jumper selected. If jumper JP3 in in place, the output will be driven below 4 ma. If the jumper is not in place, the output will be driven above 20 ma. See Figure 1-3 for jumper location. The display will alternate between the ph value and the appropriate fault mnemonic (Table 8-1). The fault sequence will continue until the cause of the fault has been corrected Diagnostic Messages. Table 8-1 lists the fault display, discribes the meaning of each and appropriate corrective action. All of these faults are detected online, except for the slope error which can occur during an off-line buffer calibration Temperature Compensation. Table 8-2 is a reference of RTD resistance values at various temperatures. These are used for test and evaluation of the sensor. NOTE Ohmic values are read across the RTD element and are based on the manufacturer s stated values (±1%). Allow enough time for the RTD element to stabilize to the surrounding temperature. 8.2 TROUBLESHOOTING. The Model 2081 ph transmitter is designed with state-of-the-art surface mount technology and microprocessor technology, making troubleshooting simple and direct. Subassembly replacement, i.e. PCB stack replacement, is all that is required. NOTE Transmitters should not be left in service once they have been determined to be inoperable General. If failure does occur, complete the following steps: 1. Check for a fault flag. If a fault condition exists, refer to Table 8-1 for the fault mnemonic explanation. 2. Check wiring connections for proper installation. 3. Refer to Troubleshooting Table 8-5. The table is arranged with the most common problems listed first. 22 TABLE 8-1. Diagnostic Messages Display Description Corrective Action SLP FAIL Electrode slope out of limits See Table 8-5 FAIL Transmitter electronics failure See Table 8-5 rnge LOOP ph value outside 4-20 ma range points Return ph to within range, replace sensor SnSr FAIL Sensor failure or A-D failure See Table 8-5 tenp Lo Temperature too low or RTD shorted Check wiring, calibrate temperature, bring sensor within tenp Hi Temperature too high or RTD open temperature specifications, replace stack, replace sensor. Note: If in manual temp. mode, RTD or appropriate resistor must be in place. See Table 8-2. TABLE 8-2. RTD Resistance Values Temperature Resistance 0 C ohms 10 C ohms 20 C ohms 30 C ohms 40 C ohms 50 C ohms 60 C ohms 70 C ohms 80 C ohms 90 C ohms 100 C ohms

27 MODEL 2081 ph SECTION 8.0 DIAGNOSTICS AND TROUBLESHOOTING Bench Check. Sensor simulation may be used to check the operation of the Model If the Model 2081 is using the integral preamplifier, connect the simulator(s) according to Figure 8-1. If the model 2081 has no preamplifier, connect the simulator(s) as shown in Figure 8-2. Refer to Table 8-2 for the appropriate RTD resistance. CAUTION Do not use over 55 volts to check the loop, or damage to the transmitter electronics may result. 1. After completing power and simulator(s) wiring, apply 24Vdc power to the Model Simulate 25 C to the transmitter by placing 11 0 resistance between TB6 and TB8. The Model 2081 should display ~25 C (refer to Section 3.2.1). Adjust the temperature display if necessary (Refer to Section 5.2). 3. Simulate 4 ph by applying +177 millivolts dc ( W /integral preamplifier) or VOLTS DC ( W /O preamplifier). NOTE Using mv inputs for units without preamps will result in a SnSr FAIL fault code. 4. Depress and hold both push buttons to scroll through the menu items to buf1 then release both buttons. The display will show the ph value currently in buf1 memory. 5. Depress and hold push button #1 (scroll) then #2 (shift) as needed to display ENTER the value into memory by simultaneously depressing both push buttons briefly. 7. Simulate 10 ph by applying -177 millivolts dc ( W /preamplifier) or VOLTS DC ( W /O preamplifier). 8. Follow steps 4-6 for buf2, entering 10.0pH. 9. The Model 2081 should display ~ If the transmitter performs properly, then the sensor should be checked. If the integral preamplifier is suspect, bypass it and follow the instructions for calibration without the preamplifier Sensor Troubleshooting. In addition to the fault mnemonics that relate to a possible sensor problem (Table 8-1 and Table 8-5), the transmitter can display the input in millivolts generated from the sensor. See Table 8-3 for how the millivolt input relates to ph. If the transmitter values are not within about 20% of those in Table 8-3, the transmitter has been incorrectly standardized for ph, the reference may be significantly poisoned, or some other significant problem exists. To read the millivolt input, go to inpt in the display submenu. TABLE 8-3. Sensor Input* to Transmitter Verses ph at Four Temperatures ph Input to Transmitter in MILLIVOLTS 15 C (59 F) 25 C (77 F) 50 C (122 F) 80 C (176 F) *99% ph electrode efficiency PCB Stack Replacement. If it becomes necessary to replace the PCB stack (both CPU and Sensor boards) there is no need to field calibrate electronics upon replacement, since the millivolt input and output digital trim is performed at the factory. Simply remove the old assembly, reconnect the new stack, and perform the sensor calibration LCD Display Replacement. If the display board needs to be replaced you will need both the generic display assembly P/N and the ph overlay P/N CAUTION Remove power from transmitter before removing the electronics cover. TABLE 8-4 VOLTAGE Input to Transmitter (no integral preamplifier) ph 15 C (RTD = ) 25 C (RTD = ) 80 C (RTD = ) Vdc input Vdc input Vdc input

28 MODEL 2081 ph SECTION 8.0 DIAGNOSTICS AND TROUBLESHOOTING TABLE 8-5. Troubleshooting Guide SYMPTOM PROBLEM ACTION Change in ph slope (value 1. Old or coated glass electrode. 1. Clean or replace glass electrode. decreasing to 49.0 or less). 2. Bad RTD value. 2. See Table 8-2 with RTD resistance and temperature values. ph value locks up (no change 1. Glass electrode cracked. 1. Replace glass electrode. of reading in different buffers). (if value stays at ph) 2. Clean glass electrode. 2. Coated glass electrode ph value not the same 1. Grab sample incorrect. 1. Re-evaluate sample technique as grab sample of process. and equipment. 2. Unclear what is correct. 2. Test with buffer solution ph out of calibration. 3. Recalibrate per start-up and calibration section. Fault code tenp-lo or 1. Miswire. 1. Check wiring between the sensor tenp-hi. and the transmitter. 2. Open or shorted RTD. 2. Replace RTD or sensor. 3. Manual temperature mode. 3. Appropriate resistor must be in place TB1-6 & 8. See Table 8-2. Fault code SLP-FAIL. 1. Coated electrode. 1. Clean or replace electrode. 2. Improper buffer calibration. 2. Recheck buffer accuracies. Change slope value (SLP) to Defective electrode. 3. Replace electrode. 4. Plugged liquid junction. 4. Replace liquid junction. Fault code rnge-loop. 1. Process value is outside. 1. Return process to normal ma range points. Check grab sample. Fault code FAIL. 1. Input signals are invalid. 1. Toggle Power 2. Calculation is invalid. 2. Change slope value (SLP) to Defective PCB stack. 3. Perform a complete bench check to try to clear the error. No output current. 1. Defective PCB stack. 1. Replace PCB stack. 2. Miswire. 2. Check for short. Low output current. 1. Circuit loading with excessive 1. Consult output loading limits resistance on output ph specifications (1840 ohms max load). inpt in display submenu reads 1. Junction poisoning. 1. Replace junction or sensor. increasingly greater or less than 0 mv at 7.00 ph. Fault code LOOP flashing 1. Model 268 or other host has 1. Model 268 or other host can intermittently with ph and set the output to a specific value. return transmitter to normal output value. operation. Fault code SnSr - FAIL 1. mv input exceeds ±675mV or 1. Check wiring; toggle power. RTD resistance is over Perform a complete bench check. 2. A-D failure 3. Replace PCB stack. 24

29 MODEL 2081 ph SECTION 8.0 DIAGNOSTICS AND TROUBLESHOOTING FIGURE 8-1 Bench Check (With Preamplifier) Power Supply + COMM TEST + TB Loop + Loop n * JP1 installed. ma Jmpr Pin connection on 10 to check thru the Preamp RTD Decade Box or Resistor + Millivolt Source FIGURE 8-2 Bench Check (Without Preamplifier) Power Supply + COMM TEST + TB Loop + Loop n * JP1 is removed. ma Jmpr Pin connection on 11 to bypass the Preamp NOTE: Using millivolts for this test will result in a SnSr-FAIL fault code. See Table 8-4 for valid voltage inputs. RTD Decade Box or Resistor + Voltage Source Pin connection on 2 to check without Preamp 25

30 MODEL 2081 ph SECTION 9.0 DESCRIPTION AND SPECIFICATIONS SECTION 9.0 DESCRIPTION AND SPECIFICATIONS FIELD MOUNTED TRANSMITTER ideal for central data processing and control. MEMBER OF THE ROSEMOUNT SMART FAMILY LOCAL, PUSH-BUTTON INTERFACE for convenient calibration and range adjustment. HAZARDOUS AREA INSTALLATION certified NEMA 7B explosion-proof. NEMA 4X (IP65) WEATHERPROOF, CORROSION-RESISTANT ENCLOSURE. CONTINUOUS DIAGNOSTICS drive the output to a jumper-selectable high or low value in the event of a failure. 9.1 FEATURES. The Model 2081 ph Smart Transmitter, with the appropriate sensor, is designed to continuously measure ph in industrial and municipal processes. This two-wire transmitter is a member of the Rosemount SMART FAMILY of instruments, which are designed to communicate with the hand-held Model 275 SMART FAMILY Interface and any other hosts that support the HART communications protocol. The Model 2081 design permits remote configuration, interrogation, testing, and diagnostics. The Model 2081 ph features an easy-to-use, dual push-button interface on the transmitter housing for local calibration and range adjustment. The standard LCD display menu indicates the ph value as well as temperature, current output value, range values, electrode slope, and fault messages. All functions are microprocessor based, using no switches or potentiometers. The isolated 4-20 ma output is continuously expandable over the measurement range, and may be displayed in either milliamps or percent of full scale. A hold output function is available for manual control during routine sensor maintenance. While in hold mode the current output signal will remain constant at the last current value. In the event of a failure, the transmitter diagnostic routine will drive the output below 4 ma or above 20 ma in addition to displaying a fault code on the transmitter. With a two-point buffer calibration, the transmitter automatically calculates the electrode slope and memorizes the buffer values. On-line standardization is easily accomplished by simply entering the ph value of a grab sample into the transmitter. The transmitter uses an RTD signal from the sensor to automatically compensate the ph reading for process temperature fluctuations. The Model 2081 ph transmitter is designed to be weatherproof and corrosion resistant to meet NEMA 4X (IP65) standards. An optional pipe or wall mounting bracket is available. The transmitter is certified NEMA 7B explosion-proof by Factory Mutual. The Rosemount logo, HART and SMART Family are registered trademarks of Rosemount Inc. 26

31 MODEL 2081 ph SECTION 9.0 DESCRIPTION AND SPECIFICATIONS 9.2 FUNCTIONAL SPECIFICATIONS Inputs: mv (for ph); resistance (for temperature) Output: Two-wire 4-20 ma with superimposed HART digital signal. Power Supply and Load Requirements: See graph below. A minimum loop resistance (load) of 250 ohms and minimum power supply voltage of 18 volts DC is required for digital communication. Local Indication: Four digit LCD Ambient Temperature: 30 to 70 C ( 22 to 158 F) Failure Mode Alarm: The analog signal will be driven either below 4 ma or above 20 ma (userselectable) to alert the user. Transmitter Security: Security activation (by internal jumper) prevents changes to the transmitter configuration from the local interface. Relative Humidity : 0-95% Automatic Temperature Compensation: Pt100 RTD 15 to 115 C (5 to 239 F) Enclosure: NEMA 4X (IP65), weatherproof and corrosion-resistant NEMA 7B, explosion proof Hazardous Area Classification: Explosion Proof: FM: Class I, Div. 1, Groups B, C & D Class II, Div. 1, Groups E, F, & G Class III, Div. 1 CSA: Class I, Div. 1, Groups C& D Class I, Div. 2, Groups A, B, C & D Class II, Div. 2, Groups E, F & G Class III, Div. 1 Intrinsic Safety: FM: Class I, II & III, Div. 1 T4 T AMB= 40 C; T3AT AMB= 70 C CSA: Class I, Div. 1 T 3C T AMB=40 C; T3 T AMB=80 C CENELEC: EEx ia IIC T5 Tamb=40 C T4 Tamb=80 C Non-Incendive: FM: Class I, Div. 2, Groups A, B, C & D CSA: Class I, Div. 2, Groups A, B, C & D T5 (Tamb=40 C) 9.3 PERFORMANCE SPECIFICATIONS (Transmitter only) Range: 0 to 14 ph Output Scale: Zero Suppression: Up to 13 ph units Span: From 1 to 14 ph units Accuracy: ± 0.02 ph, 0.1 C Resolution: 0.01 ph, 0.1 C Repeatability: ± 0.01 ph Stability: 1%/ year at 25 C Temperature Effect: 0.02% F.S./ C Vibration Effect: ± 1.0% of F.S. per SAMA PMC 31.1, Section 5.3, Condition 2. EMI/RFI: EN PHYSICAL SPECIFICATIONS Electrical Connections: 1/2 in. NPT. Model 275 SMART FAMILY Interface connections permanently fixed to terminal block. The terminal block also has removable connectors for bare wire sensor connections. Housing: Epoxy-polyester painted over low-copper aluminum. BUNA-N O-rings on cover. Recommended Cable: Transmitter to power supply two-wire, 18 AWG, shielded, Belden 8760 or equal (Rosemount Analytical PN ). Weight/Shipping Weight: 2.18 kg/2.68 kg (4.8 lb/5.9 lb) Load (ohms) LOAD/POWER SUPPLY REQUIREMENTS OPERATING REGION 250 WITHOUT HART COMMUNICATION 0 12 VDC 18 VDC 42.4 ZERO LOAD LIFT OFF 42.4 VDC MAXIMUM POWER SUPPLY VOLTAGE 27

32 MODEL 2081 ph SECTION 9.0 DESCRIPTION AND SPECIFICATIONS PREAMP LOCATION: A preamplifier is used to convert the high impedance ph glass electrode signal to a low impedance signal. The ph signal may then be reliably transmitted from the sensor to the transmitter using standard shielded 4-wire instrument cable. The preamplifier may be located in one of three areas: in the ph sensor for best performance, in a remote junction box when process temperatures exceed 80 C (176 F) in submersion applications, or in the transmitter when the distance between the ph sensor and the transmitter is 15 ft (4.6 m) or less. The 2081 ph transmitter contains a jumper selectable preamp that allows operation in any of these 3 modes. 9.5 RECOMMENDED ph SENSORS: Model 300 Retractable Model 320B Flow-Through Model 320HP High Purity Flow-Through Model 328A Steam Sterilizable Model 370, 371, & 371VP Eurosenz Model 381 Insertion/Submersion/Flow-Through Model 385 Retractable Model 389 Disposable Models TUpH 396/396P Disposable, 396R Retractable Model 397 Quik-Loc Models TUpH 398 Insertion/Submersion, 398R Retractable Model 399 Disposable Model GP1 Disposable 9.6 ORDERING INFORMATION Model 2081 ph Two-Wire Transmitter is housed in a NEMA 4X (IP65) weatherproof, corrosion-resistant enclosure suitable for pipe mounting. Standard features include LCD digital display, automatic temperature compensation, and isolated 4-20 ma output with HART digital communications capability. External DC loop power is required from a distributed control system or Model 515 isolated power supply. Remote alarms with independently adjustable setpoints are available with the Model 230A Alarm Module. MODEL 2081 ph TWO-WIRE TRANSMITTER Code Agency Approvals 67 FM approved, Intrinsically Safe (when used with approved sensor and safety barrier), and explosion-proof 69 CSA approved, Intrinsically Safe (when used with approved sensor and safety barrier), and explosion-proof 73 CENELEC instrinsically Safe (Safety barrier required) 2081 ph 67 EXAMPLE Former Options Code Options (Order PN s as separate line items) 07 Order as PN in. pipe/wall mounting bracket (1lb/.5kg) 11 Order as PN Stainless steel Tag (specify marking) 28

33 MODEL 2081 ph SECTION 9.0 DESCRIPTION AND SPECIFICATIONS 9.7 MODEL 2081 PH REPLACEMENT PARTS AND ACCESSORIES PN DESCRIPTION RECOMMENDED SPARES PCB, 2081 LCD Display (Requires ph overlay P/N ) PCB, 2081 Interface PCB Electronics Stack with LCD Display (factory calibrated) Push Buttons, 2081, Kit Enclosure, Middle Enclosure Cover, LCD Display Side Pipe Mounting Bracket O-ring Kit (Qty. 2), Enclosure Enclosure Cover, Tall Cable, 2 Conductor, 18 AWG, Shielded Overlay, 2081pH LCD Display 1 * NOTE: The PCB Stack comes factory calibrated for the highest possible accuracy. No field calibration is required. HART COMMUNICATION MODEL 275 HART COMMUNICATOR: This hand-held interface provides a common communication link to all HART SMART, microprocessor-based instruments and allows access to AMS (Asset Management Solutions). Digital communication may be used to set up and control the field device, and read the measured variable over the communication link. Without modification, these instruments are ready for fully-digital system use. ON-LINE MENU: When connected, pressing the On key will display the On-line menu. From the On-line menu, all setup parameters are accessible. Model 2081 SMART Transmitter 4/20 ma + Digital Hand Held Communicator ( Configurator ) 250 ohm Bridge HART COMMUNICATOR Control System Computer 29

34 MODEL 2081 ph SECTION 10.0 RETURN OF MATERIAL SECTION 10.0 RETURN OF MATERIAL 10.1 GENERAL. To expedite the repair and return of instruments, proper communication between the customer and the factory is important. Call for a Return Materials Authorization (RMA) number WARRANTY REPAIR. The following is the procedure for returning instruments still under warranty: 1. Call Rosemount Analytical for authorization. 2. To verify warranty, supply the factory sales order number or the original purchase order number. In the case of individual parts or sub-assemblies, the serial number on the unit must be supplied. 3. Carefully package the materials and enclose your Letter of Transmittal (see Warranty). If possible, pack the materials in the same manner as they were received. 4. Send the package prepaid to: 10.3 NON-WARRANTY REPAIR. The following is the procedure for returning for repair instruments that are no longer under warranty: 1. Call Rosemount Analytical for authorization. 2. Supply the purchase order number, and make sure to provide the name and telephone number of the individual to be contacted should additional information be needed. 3. Do Steps 3 and 4 of Section NOTE Consult the factory for additional information regarding service or repair. Rosemount Analytical Inc., Uniloc Division Uniloc Division 2400 Barranca Parkway Irvine, CA Attn: Factory Repair RMA No. Mark the package: Returned for Repair Model No. 30

35 The right people, the right answers, right now. Immediate, Reliable Analytical Support Now there s a way to quickly get the right answers for your liquid analytical instrumentation questions: the Analytical Customer Support Center. Our staff of trained professionals is ready to provide the information you need. If you are placing an order, verifying delivery, requesting application information, or just want to contact a Rosemount Analytical representative, a call to the Customer Support Center will provide you with the right people, the right answers, right now. A Worldwide Network of Sales and Service Emerson Process Management s field sales offices are your source for more information on the fill line of Rosemount Analytical products. Field sales personnel will work closely with you to supply technical data and application information. For more information, please contact your nearest Emerson Process Management sales office. THE AMERICAS - HEADQUARTERS Rosemount Analytical Inc. Liquid Division 2400 Barranca Parkway Irvine, CA Phone: Toll Free: Fax: ASIA-PACIFIC Fisher-Rosemount Singapore Private Ltd. 1 Pandan Crescent Singapore 0512 Republic of Singapore Phone: Fax: EUROPE, MIDDLE EAST, AND AFRICA Fisher-Rosemount Ltd. Heath Place Bognor Regis West Sussex PO22 9SH England Phone: Fax: ADDITIONAL SALES OFFICES IN: Argentina Australia Austria Azerbajan Bahrain Belgium Bolivia Brazil Brunei Bulgaria Canada Chile China Colombia Costa Rica Croatia Czech Republic Denmark Egypt Ecuador Finland France Germany Greece Hong Kong Hungary India Indonesia Ireland Israel Italy Jamaica Japan Jordan Kazakhstan Korea Kuwait Malaysia Mexico Netherlands New Zealand Nigeria Norway Oman Pakistan Paraguay Peru Philippines Poland Portugal Puerto Rico Qatar Romania Russia Saudi Arabia Singapore Slovak Republic South Africa Spain Sweden Switzerland Syria Taiwan Thailand Tobago Trinidad Tunisia Turkey Ukraine United Arab Emirates United Kingdom Uruguay Uzbekistan Venezuela Yemen VISIT OUR WEBSITE AT

36

37 WARRANTY Seller warrants that the firmware will execute the programming instructions provided by Seller, and that the Goods manufactured or Services provided by Seller will be free from defects in materials or workmanship under normal use and care until the expiration of the applicable warranty period. Goods are warranted for twelve (12) months from the date of initial installation or eighteen (18) months from the date of shipment by Seller, whichever period expires first. Consumables, such as glass electrodes, membranes, liquid junctions, electrolyte, o-rings, catalytic beads, etc., and Services are warranted for a period of 90 days from the date of shipment or provision. Products purchased by Seller from a third party for resale to Buyer ("Resale Products") shall carry only the warranty extended by the original manufacturer. Buyer agrees that Seller has no liability for Resale Products beyond making a reasonable commercial effort to arrange for procurement and shipping of the Resale Products. If Buyer discovers any warranty defects and notifies Seller thereof in writing during the applicable warranty period, Seller shall, at its option, promptly correct any errors that are found by Seller in the firmware or Services, or repair or replace F.O.B. point of manufacture that portion of the Goods or firmware found by Seller to be defective, or refund the purchase price of the defective portion of the Goods/Services. All replacements or repairs necessitated by inadequate maintenance, normal wear and usage, unsuitable power sources, unsuitable environmental conditions, accident, misuse, improper installation, modification, repair, storage or handling, or any other cause not the fault of Seller are not covered by this limited warranty, and shall be at Buyer's expense. Seller shall not be obligated to pay any costs or charges incurred by Buyer or any other party except as may be agreed upon in writing in advance by an authorized Seller representative. All costs of dismantling, reinstallation and freight and the time and expenses of Seller's personnel for site travel and diagnosis under this warranty clause shall be borne by Buyer unless accepted in writing by Seller. Goods repaired and parts replaced during the warranty period shall be in warranty for the remainder of the original warranty period or ninety (90) days, whichever is longer. This limited warranty is the only warranty made by Seller and can be amended only in a writing signed by an authorized representative of Seller. Except as otherwise expressly provided in the Agreement, THERE ARE NO REPRESENTATIONS OR WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, AS TO MERCHANTABILITY, FIT- NESS FOR PARTICULAR PURPOSE, OR ANY OTHER MATTER WITH RESPECT TO ANY OF THE GOODS OR SERVICES. RETURN OF MATERIAL Material returned for repair, whether in or out of warranty, should be shipped prepaid to: Emerson Process Management Liquid Division 2400 Barranca Parkway Irvine, CA The shipping container should be marked: Return for Repair Model The returned material should be accompanied by a letter of transmittal which should include the following information (make a copy of the "Return of Materials Request" found on the last page of the Manual and provide the following thereon): 1. Location type of service, and length of time of service of the device. 2. Description of the faulty operation of the device and the circumstances of the failure. 3. Name and telephone number of the person to contact if there are questions about the returned material. 4. Statement as to whether warranty or non-warranty service is requested. 5. Complete shipping instructions for return of the material. Adherence to these procedures will expedite handling of the returned material and will prevent unnecessary additional charges for inspection and testing to determine the problem with the device. If the material is returned for out-of-warranty repairs, a purchase order for repairs should be enclosed.

38 The right people, the right answers, right now. ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE Credit Cards for U.S. Purchases Only. Emerson Process Management Rosemount Analytical Inc Barranca Parkway Irvine, CA USA Tel: (949) Fax: (949) Rosemount Analytical Inc. 2003