GraviTek Titration Scale Instruction Manual

Transcription

1 GraviTek Titration Scale Instruction Manual

2 Compliance Compliance to the following standards is indicated by the corresponding mark on the product This product conforms to the EMC directive 2004/108/EC and the Low Voltage Directive 2006/95/EC. The complete declaration of Conformity is available from you local dealer Disposal In conformance with the European Directive 2002/96 EC on Waste Electrical and Electronic Equipment (WEEE) this device may not be disposed of in domestic waste. This also applies to countries outside the EU, per their specific requirements. Please dispose of this product in accordance with local regulations at the collecting point specified for electrical and electronic equipment. If you have any questions, please contact the responsible authority or the distributor from which you purchased this device. Should this device be passed on to other parties (for private or professional use), the content of this regulation must also be related. Thank you for your contribution to environmental protection. FCC Note This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/tv technician for help Industry Canada Note This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada. ii

3 GraviTek Titration Scale EN-1 1. INTRODUCTION This manual contains installation, operation and maintenance instructions for the GraviTek TM Titration Scale. Please read the manual completely before using the scale. 1.1 Safety Precautions Please follow these safety precautions: Verify that the Power Adapter input voltage matches the local power supply voltage. Use the scale only in dry locations. Do not operate the scale in hostile environments. Do not drop heavy loads on the pan. Do not place the scale upside down on the pan. Service should be performed only by authorized personnel LCD Display & Controls LCD Display Indicators: Battery Power Indicator * Stability Indicator Figure 1-1. LCD Display & Controls g Gram Indicator g88 Test Type Number ppm PPM Indicator Button Name On-Zero Off Yes TABLE 1-1, CONTROL FUNCTIONS Function Primary function (Short ) If scale is Off, turn On. If scale is on, perform Zero/Tare function Secondary function (Long ) Turn scale Off Menu function (Yes) This key is used to accept the currently displayed setting

4 EN-2 Button Name Accept Menu Print Cal Mode Test No GraviTek Titration Scale Function Primary function (Short ) When in the Test Mode Accepts the displayed value for input. Secondary function (Long ) Enters the User Menu. Primary function (Short ) Send the current display value to serial port if installed Secondary function (Long ) Starts a Span calibration Primary function (Short ) Advances to next available Test Type or Weighing Mode Secondary function (Long ) Scrolls through the available Test Types and Weighing Modes. Menu function (No) This key is used to reject the displayed setting and advance to next available setting 2. INSTALLATION 2.1 Package Contents Scale Pan Draft Shield Calibration Weight Power Adapter 4 Alkaline Batteries USB Module USB Driver Mini-CD 2.2. Location Use the scale on a firm, steady surface. Avoid locations with excessive air currents, vibrations, heat sources, or rapid temperature changes. Adjust the leveling feet so the bubble is centered within the smaller circle. See Figure 2.1. Level Bubble Figure 2-1, Leveling Adjustments

5 GraviTek Titration Scale EN Transportation Lock, Calibration Lock & Pan Installation Before using the scale the Transportation Lock must be released. At the bottom of the scale slide the locking pin to the position. See Figures 2-2. If the scale is to be calibrated by the user ensure that the Calibration Lock is set to position. See Figure 2-3. Install the metal pan over the plastic sub-platform. Figure 2-2. Release Transportation Lock Figure 2-3. Release Calibration Lock 2.4 Connect Power A Power Adapter may be used to power the scale. Connect the Power Adapter to an AC power outlet (see Figure 2-4) and insert the power plug at the back of the scale (see Figure 2-5) For use only with UL or CSA Certified (or equivalent approved) power adapter, which is a Class 2 or a Limited Power Source device. Figures 2-4, Power Adapter Figure 2-5, Power Plug

6 EN-4 GraviTek Titration Scale 2.5 Battery Installation and Use The scale may also be powered by batteries. Remove the battery cover and install four alkaline AA (LR6) type batteries. Refer to Figure 2.6 to properly install the batteries. Under battery power a battery symbol is shown on the left side of the display. The Auto-Off setting is useful for conserving battery power, see section Figures 2-6, Battery Installation 2.6 Initial Calibration Power on the scale by pressing On-Zero. Allow at least one minute for the scale to stabilize before calibrating. and hold the Print/Cal button until [CAL] is displayed. The display flashes [-C-] while zero reading is taken. The display flashes the required span mass. Place the indicated calibration mass on the pan and press Yes. The display flashes [-C-]. When calibration is complete, [DonE] is displayed. Note: Calibration is also available in the Setup menu, see section

7 GraviTek Titration Scale 3. OPERATION EN Modes of Operation There are three Modes of operation, Standard Weighing, Titration Test, and Data Upload. The Titration Test Mode is also broken into 20 Test Types. ing Mode/Test will advance to the next available Mode or Test Type. Some Modes and Test Types may initially be unavailable. They can be enabled in the Main menu Type [t.y.p.e], see section Standard Weighing Mode Mode/Test until the g weighing is seen. Zero to zero the scale and place objects to be weighed onto the pan. When using a container the Zero button may be used similar to a Tare feature. Using a heavy container will limit the remaining capacity of the scale Titration Test Mode Mode/Test until the gxx is seen. The xx will represent a number corresponding to an available Titration Test Type. (Refer to your GraviTek list of available Test Types.) Repeatedly press Mode/Test until the required Titration Test Type number is shown. Follow the step below to perform a Titration Test: Note: During the Titration Test procedure it is important to allow the weight reading to fully stabilize before pressing the Zero or Accept buttons. These buttons will not operate until the reading has become stable. The appearance of the stability indicator [*] shows the user that the reading stabilized. 1) Place an empty test cup on the scale pan. When the weight reading is stable press the Zero button to Tare out the weight of the empty cup. 2) Pour the test sample into the cup. When the weight reading is stable press the Accept button. 3) The Test Type number will begin flashing to show that the first weight reading was accepted. 4) Remove the cup with the sample from the scale pan. 5) If required add the proper Indicator material to the sample. (Refer to your GraviTek list of Indicator materials.)

8 EN-6 GraviTek Titration Scale 6) Select the proper Titrant to be used with the Test Type. (Refer to your GraviTek list of Titrant materials.) 7) Before adding the Titrant to the sample place the container with the dropper on the scale pan. When the weight reading is stable press the Zero button. 8) Remove the Titrant container from the pan. 9) Titrate the sample. (Refer to your GraviTek Titration instructions.) 10) After Titration place the Titrant container and dropper back on the scale pan. When the weight reading is stable press the Accept button. 11) The scale will perform the calculation and display the Test Type concentration in PPM. (If the [on.test} setting is selected Test values and PPM results are printed to the serial device.) 12) The display will flash the PPM result and [SAVE]. Yes to save the PPM result into the scale s Test Memory. No to clear the PPM result without saving. 13) If the result is saved by pressing Yes the display will flash the memory location where the result is stored. 14) The scale returns to the start of the Test procedure. Notes: a) If the PPM result is out of range, (> PPM) an Error message will be shown on the display. An out of result can be printed to the serial device but cannot be saved to memory. No to clear the Error message. b) If the scale s Test Memory becomes filled (100 tests) the display will show [mm.full]. Testing can continue but new test results can not be saved until the scale memory has been cleared, (refer to section 4.2.1) c) During the test keep the Titrant container clean and dry. Contaminants or foreign material on the outside of the container could cause errors during testing Data Upload Mode Mode/Test until [UPLoAd UP] is seen. the Print button to send all of the stored Titration Test memory to the serial device. (If a serial device is not available the [dsply.mme] sub-menu may be used to view the Test memory on the display.

9 GraviTek Titration Scale Refer to section 4.2.1) EN-7 4. SETTINGS The Settings allows the user to customize the scale. 4.1 Menu Structure Table 4-1 illustrates the menu structure. S.e.t.u. p A-Off OFF On LIGHt On Auto SpaN Lin Off Yes or No Yes or No dspy.mme Yes or No CLr.mME Yes or No t.y.p.e Unit g OFF Unit 01.. OFF.... Unit 11.. On.. Unit 20 On P.r.i.n. StAbLE OFF On APrint U.S.b On-Off On OFF baud Parity 7- none 8-nonE 7-EuEn 7-odd HAndSh none On-OFF rts.cts E.n. Yes or End Yes or No On End Yes or No Unit UP OFF

10 EN-8 End Yes or No GraviTek Titration Scale Pr.CoEF Yes or No Prt.mME Yes or No End Yes or No TABLE 4-1, MENU Note: Default menu settings are shown in bold. 4.2 Menu Navigation Main level menus are identified by decimal points between each letter, for example [S.E.t.U.P]. Below each Main menu is a list of Sub-menus. Main Menu: Sub-Menu: To enter the main menu press and hold the Accept/Menu button until [S.E.t.U.P] is first displayed. Advance to the next main menu by pressing No. To enter each main menu press Yes. Within each main menu are sub-menus. Advance to the next submenu by pressing No. To enter each sub-menu press Yes. Changing Settings: Within each sub-menu are available settings. To advance to the

11 GraviTek Titration Scale EN-9 next setting press No. To accept the displayed setting press Yes. Menu Exit: The last item in each sub-menu list is [EnD]. Yes to return to the main menu. The last item in the main menu is also [E.n.D]. Yes to exit the main menu and return to the previous weighing mode Setup Menu [S.E.t.U.P.] The Setup menu contains the following sub-menus: Auto-Off [A-OFF]: Backlight [LIGHt]: Auto Off settings: Off On Setting to [On] will automatically turn the scale off after no activity is detected for 6 minutes. Backlight settings: Off On Auto Setting to [Auto] will allow the Backlight to turn on with any activity. Then after 5 seconds of no activity the Backlight will automatically turn off. Span Calibration [SPAN]: Yes to begin Span calibration. Span calibration uses two weight readings: Zero and a value at or near the full capacity of the scale. Span calibration should be performed if the scale is repositioned or if the room temperature changes significantly. Linearity Calibration [Lin]: Yes to begin Linearity calibration. Linearity calibration uses three weight readings: Zero, a mid-range value and full capacity. Generally Linearity calibration is not required unless testing shows the linearity error exceeds the tolerance in the specification table. Accuracy of the calibration weights is important to maintain weighing integrity. Display Memory [dspy.mme]: Yes to begin the display of stored test memory. No at any time to exit the display memory function. ing Yes repeatedly will advance to the next test that is stored in memory. Clear Memory [CLr.mME]: Yes to erase all stored tests in the memory. The display will flash one time when memory is erased. If there is no test memory to be erased the display will not

12 EN-10 flash. GraviTek Titration Scale Type/Unit Menu [t.y.p.e] The Type/Unit menu contains sub-menus to separately enable or disable each available Type/Unit. Enable Type/Unit [Unit xx ]: Settings are On OFF. See Table 4-1 for the symbols associated with each Type/Unit Print Menu The print menu is only available only when the USB option is installed. The Print menu contains the following sub-menus: Stable Only Print [StAbLE]: Stable Only Print settings: Off On Setting to [On] will allow only stable weight data to be printed. Stable weight data is shown by the state of the Stability indicator [ * ]. Auto Print [APrint]: Auto Print settings: Off Cont on.stbl on.test 5 SEC 15 SEC 30 SEC 60 SEC. All Auto Print settings (except on.test) affect printing only while in the standard weighing mode. [Cont] Continuous Print sends weight data as fast as possible. [on.stbl] On Stability Print sends weight data each time a new stable reading is obtained. The weight change must be greater then 5d and greater then 5d from zero. [on.test] On Test Print operates only in the Titrate Mode. A single line print out is sent at the completion of a PPM calculation. Three values are sent in a single line format. [XX SEC] Interval Print sends weight data at the selected XX second interval with a relative time stamp appended to each print out. Note: In all Auto Print modes other then [on.test] pressing the Print button will cause a temporary stop to

13 GraviTek Titration Scale EN-11 printing. ing the Print button again will restart the printing. The display shows [Prt.on] and {Prt.oFF] each time the Print button is pressed. Print Coefficients [Pr.CoEF]: Yes to print a list of all internal coefficients. Print Memory [CPrt.mME]: memory. Yes to print out all stored test data in USB Menu The USB menu is only available only when the USB option is installed. The USB menu contains the following sub-menus: USB On-Off [On-OFF]: USB On-Off settings: Off On Setting to [OFF] will disable the USB interface. Battery power is conserved while in the [OFF] setting Baud Rate [baud]: Baud rate settings: Allows selection of a baud rate to match the receiving device. Bits & Parity [PArity]: Bits & parity settings: 7-nonE 8-nonE 7-EuEn 7- odd Allows selection of bits and parity to match the receiving device. Handshaking [HAndSh]: Handshake settings: none On-Off rts.cts Allows selection of a handshaking format to match the receiving device. [On-Off] Xon/Xoff software handshaking is used. [rts.cts] RTS/CTS hardware handshaking is used. 5. OTHER FEATURES

14 EN-12 GraviTek Titration Scale 5.1 Draft Shield The draft shield was designed with an easy to remove center piece which can be used as a high quality sample tray. With the draft shield closed and the center piece removed the draft shield will still provide increased protection from rough environments while maintaining optimum weighing speed. To remove the center piece, rotate counter-clockwise. See Figure 5-1. With the sample tray firmly in place the unique shape of the draft shield also allows for the efficient stacking of one scale on top of another. Figure 5.1, Sample Tray Removal 5.2. Calibration Lock Feature Sliding the switch fully to the lock position prevents calibration of the scale. Using a paper or wire seal will physically secure the switch if required. Locking the calibration Adhesive paper seal Wire or plastic tie seal Figure 5-2, Locking and Sealing the Calibration Lock Switch. 5.3 Weigh Below Feature The Weigh Below Hook is stored inside the battery cover. Thread the hook into the access hole at the bottom of the scale. Mount the scale onto an appropriate assembly

15 GraviTek Titration Scale EN-13 that allows free working space below the hook. See Figure 5-3. Note: Never allow the scale to rest directly on the hook. Weigh Below Hook access hole Figure 5-3, Setup for using the Weigh Below Hook. 5.3 Security Feature The rear edge of the scale contains a security loop that can be used with a security cable to deter theft. The cable is threaded through the security loop and through or around a permanent structure. A locking security device kit may be purchased separately. Security Loop Figures 5-4, Security Loop Feature

16 EN-14 GraviTek Titration Scale 6. MAINTENANCE 6.1 Troubleshooting The following table lists common problems and possible causes and remedies. If the problem persists, contact your authorized dealer. TABLE 6-1, TROUBLESHOOTING. Symptom Possible Cause Remedy Cannot turn on Poor accuracy Cannot calibrate No power to scale Empty or incorrectly installed batteries Improper calibration Unstable environment Transportation Lock is set Debris touching the pan Draft shield is touching the pan or sample. Unstable environment Incorrect calibration mass Transportation Lock is set Calibration Lock switch is set Verify AC adapter connections and voltage. Replace batteries, check polarity. Perform calibration. Move scale to suitable location. Slide the pin to the unlocked position. Clean any debris next to or under the pan. Check that pan is fully seated, check sample height. Move the scale to a suitable location. Use correct calibration masses. Slide the pin to the unlocked position. Slide the switch to the unlocked position. Err 1 Invalid Checksum data. Cycle scale off/on. Contact your authorized dealer. Err 2 Over-load or Under-load condition. Transportation Lock is set Improper calibration Verify pan is installed and/or excess load is removed from pan. Slide the pin to the unlocked position. Perform calibration. Err 4 Invalid calibration mass. Verify correct calibration mass is being used. Err 5 The titration test was performed incorrectly or the PPM result was > Repeat the titration test and perform the correct steps in the proper order. Concentrations > cannot be tested. Err 8 RS232 buffer is full. Cycle scale Off/On. Check RS232 settings in scale and computer when RS232 option is installed. Err 9 Internal data error. Contact your authorized dealer. (Flashing) Battery power is low. Replace batteries soon. batt LowW Battery power is too low for proper operation. Replace batteries. 6.2 Service Information If the troubleshooting section does not resolve or describe your problem, contact your authorized dealer.

17 GraviTek Titration Scale 7. TECHNICAL DATA 7.1 Specifications TABLE 7-1, SPECIFICATIONS Model SLH203 Capacity (g) 200 Readability (g) Linearity (d) ±1 Repeatability (g) Span Mass (g) 200* Linearity Masses (g) Test/Weighing Units Tare Range 20 Test Types, Grams To Capacity by Subtraction Stabilization Time < 3 Operating Temperature F / C Operating Humidity 30%-90% Pan Size (mm) * Included with Scale 120 dia. EN Accessories TABLE 7-2, ACCESSORIES ACCESSORY RS232 Interface Kit USB interface Kit Security Device Impact Printer Adapter, RS232 to Printer Calibration masses PART NUMBER Contact your authorized dealer to purchase required accessories. 7.3 Drawings

18 EN-16 GraviTek Titration Scale Figure 7-1, Overall Dimensions

19

20 P/N * *