Signet 5700 ph/orp Monitor - ph Instructions

Transcription

1 Signet 5700 ph/orp Monitor ph Instructions English * * Rev. K 3/06 English/pH CAUTION! Refer to instruction manual for more details. Remove power to unit before wiring input and output connections. Follow instructions carefully to avoid personal injury. Contents 1. Power Connections. Compatible Electrode/Preamp Wiring ma Current Output Connections 4. Relay Connections 5. Relay Operation 6. Menu Functions 7. Parts and Accessories 8. Specifi cations 9. Quick Reference Menu Parameters 10. Troubleshooting 11. Maintenance Remove terminal blocks for easy wiring Freq. IN Freq. IN Sen. Pwr. Iso. Gnd Std. Sensor Open Collector Sensor LISTED UL 77CJ 14 V 10 W Gnd Gnd PLS AUX output output 1 Total reset Patent No. D376,38 Flow 1 Freq. IN Freq. IN Sen. Pwr. Iso. Gnd Std. Sensor Open Collector Sensor LISTED UL 77CJ 14 V 10 W Gnd Gnd PLS AUX output output 1 Total reset Patent No. D376,38 Flow Power Connections. Compatible Electrode/Preamp Wiring CAUTION! Never connect 110 VAC or 0 VAC to rear power terminals. High voltage AC will damage instrument and void warranty. 14 V 10 W 5700 Terminals External power supply 1 4 VDC OR 1 4 VAC Brown Blue mv Input Brown wire Silver (earth ground) Iso. Gnd Blue wire T Green wire Green T White wire White Red Black V Red Wire V Black wire 40 ma ph/orp Preamp: Signet 70 TwistLock Electrodes 5700 Terminals DryLoc Electrodes Preamp: Signet 7601 Signet 760 = Double Insulated = DC or AC power Technical Notes: To reduce the possibility of noise interference, isolate AC power lines from signal lines. Maximum 40 ma loop impedance (sec. 3) is affected by the supply voltage. Use six conductor shielded cable for cable extensions up to 10 m (400 ft) max. (# ) Cable shield must be maintained through cable splice

2 3. 40 ma Current Output Connections Technical Notes: ** 1/8A fuse recommended (customer supplied) * 40 ma output is internally powered (nonisolated), maximum loop impedance 350 Ω with a 1 V instrument supply voltage, 950 Ω with a 4 V instrument supply voltage. To isolate output and prevent ground loop problems: 1. Use monitor device with isolated inputs, or. Use separate DC supply for 5700 and monitor device, or 3. Power 5700 with1 4 VAC step down transformer 4. Relay Connections Two internal relay contact sets (COM, NO, and NC) may be used for external device control. Front panel LED annunciators indicate the activation status of each relay. Each relay can control up to two devices simultaneously, as shown. Relay operation modes include Low alarm, High alarm, and Proportional Pulse (sec. 5). Common device connections include: Pulse mode metering pump control Pulse mode solenoid valve control Low or High mode warning lamps Low or High mode bells or sirens Low or High mode external heavyduty relay Wiring Example Right Device A IS powered when relay is deenergized (front panel LED "off"). Power is discontinued when the relay setpoint is reached (front panel LED "on"). Device B IS NOT powered when the relay is deenergized. Power is applied after the relay setpoint is reached. 5. Relay Operation 5700 Terminals Fuse** 1/8A 40 ma Relay ph/orp Technical Notes: Maximum relay contact ratings: 5 30 VDC, 5 15 VAC, or 3 50 VAC An external heavyduty relay must be used for devices with surge currents or operating currents that exceed the above specifi cations. * 5700 Terminals Relay 1 NO C NC NO C NC External AC/DC power 4 0 ma* Relay Deenergized NO C NC Device A Device B Relay Energized NO C NC A. LOW alarm mode The relay is energized when the ph drops below the setpoint, and is deenergized when the ph rises above the setpoint plus hysteresis (sec. 6.3E, 6.3F). Low setpoint= Adjustable hysteresis= Relay energized= Relay deenergized= ph B. HIGH alarm mode The relay is energized when the ph rises above the setpoint and is deengergized when the ph falls below the setpoint plus hysteresis (sec. 6.3E, 6.3F). High setpoint= Adjustable hysteresis= Relay energized= Relay deenergized= ph C. Proportional PULSE mode The proportional pulse relay configuration is primarily designed for metering pump control. The operator is prompted to enter a minimum and maximum ph setpoint and maximum pulse rate for the assigned relay (sec. 6.3G, 6.3H). Relay pulse width is fixed at 130 ms. Refer to the operation examples below. 300 pulses Metering pump chemical addition (dry contact activation type required) Example 1 (right): As the process ph rises above the minimum pulse setpoint (4.00 ph) the relay begins pulsing; triggering the metering pump for chemical addition. As the ph continues to rise, pulsing accelerates proportionally until the maximum programmed pulse rate of 300 pulses/minute and setpoint (10.00 ph) are reached, forcing the process ph back down to intended levels (e.g. 4.0 ph). ph 0 pulses 30 Relay 1 or Relay 0 ph ph Example (right): As the process ph falls below the minimum pulse setpoint (10.00 ph) the relay begins pulsing; triggering the metering pump for chemical addition. As the ph continues to decrease, pulsing accelerates proportionally until the maximum programmed pulse rate of 300 pulses/minute and setpoint (4.00 ph) are reached, forcing the process ph back up to intended levels (e.g ph). 300 pulses 3 Relay 1 or Relay 0 pulses ph 0 ph ph Signet 5700 ph/orp Monitor ph Instructions

3 ENTER 6. Menu Functions To access either CALIBRATE or OPTIONS menus, press and hold the ENTER key as illustrated below: VIEW (sec. 6.1) CALIBRATE (sec. 6.3) OPTIONS (sec. 6.4) Press & hold ENTER key for access: ENTER seconds 5 seconds Menus: VIEW menu (sec. 6.1): The VIEW menu is displayed during standard operation. The operator can navigate freely through the menu by pressing either UP or DOWN arrow keys. CALIBRATE Menu (sec. 6.3): The CALIBRATE menu contains all critical display setup and output parameters. A simple security code feature prevents unauthorized tampering. The operator is required to enter a simple access code for menu access. The same code also unlocks OPTIONS menus. OPTIONS Menu (sec. 6.4): The OPTIONS menu contains setup and display features that are seldom accessed for minor display or output adjustments. Reversible Dial Your 5700 includes a reversible dial face for ORP use. See enclosed ORP manual for operation details. A B ALARM 1 ALARM 1000 C ORP 1000 ph 0 14 ALARM 1 ALARM D 6.1 VIEW Menu H A. 1 Choose: ph/temperature Change: 3 Save: Menu Displays A H: (Factory default displays shown in menu column 1) A. Active ph and temperature display B. C. mv input Loop output B. Input display: shows electrode input mv C. Loop output display: shows the loop current output level. D. ph range display: shows the programmed min and max meter range (sec. 6.3A) D. Range E. Relay 1 display: this display shows the programmed operation mode and setpoint for relay 1 (sec. 6.3E) E. Relay 1 F. Relay display: this display shows the programmed operation mode and setpoint for relay (sec. (6.3E) F. Relay G. Last calibration: this display shows a user defi ned setup date for maintenance records. This feature is not an internal timer or calender. G. H. Last calibration Buffer calibration A Press and release to access EASY CAL Procedure See EASY CAL Procedure (Section 6.) H. EASY CAL: press the right arrow key to access the EASY CAL buffer calibration procedure (sec. 6.). Signet 5700 ph/orp Monitor ph Instructions 3

4 6. EASY CAL Procedure Requirements This procedure simplifi es system calibration using standard ph buffers. Use ph 4.0, 7.0, 10.0 ph buffers only (sec. 7). If standard ph buffers are not available, the system can be calibrated using the CALIBRATE menu temperature, standard, and slope settings (sec. 6.3BD). Access CALIBRATE menu (sec. 6.3B) and set sensor temperature before performing EASY CAL for new electrode installation. 1 To Calibrate: Press keys in sequence will appear during code entry. Response: to continue, 3 To Accept: Place electrode tip in first ph buffer; Allow for stabilization Press ENTER to accept first buffer calibration. ph 4.0, 7.0 or seconds* * For best results, gently stir the submerged electrode for approximately 5 seconds during the stabilization period (step ). Place electrode tip in second (different) ph buffer; Allow for stabilization Press ENTER to accept second buffer calibration. Large temperature differences from process fl uids to buffers may require longer stabilization time. ph 4.0, 7.0 or seconds* Display returns to VIEW Menu in 3s To exit EASY CAL at any time without saving changes: quick press Technical notes: The difference between the actual mv reading and value shown in the table below is a good indication of the ph electrode condition. Differences in excess of 50 mv indicate a need to service the electrode. Refer to electrode manual for maintenance recommendations. Theoretical mv values 5 C mv Signet 5700 ph/orp Monitor ph Instructions

5 6.3 CALIBRATE Menu Requirements System calibration is possible with two known ph solutions within 0 to 14 ph and an accurate reference thermometer. The EASY CAL procedure (sec. 6.) is recommended when standard ph buffers are available. If EASY CAL is performed, manual calibration steps B D below are not required. Always calibrate solution temperature fi rst (step B below) before setting ph standard and slope (steps C D below). Single point calibration can be done by setting "Set Standard" (step C) only. Dual point calibration (recommended) can be done by setting "Set Standard" followed by "Set Slope" (steps BC). Press keys in sequence will appear during code entry. to continue, I A. B. C. D. E. F. 1 Choose: Range Electrode temp. Electrode standard Electrode slope Relay Meter min max Allow for stabilization Allow for stabilization Allow for stabilization Mode Setpoint Change: Relay Low or High Mode Selected 3 Save: ENTER "SAVING" briefly displays Menu Settings A I : (Factory default displays shown in menu column 1) A. Sets Min Max meter dial range, (factory installed dial, ). Contact factory for custom dial confi gurations. Does not effect 4 to 0 ma output B. Sets process solution temperature C. Sets electrode standard to any value from 014 ph. Standard calibration solution must be ph units from slope solution (step D) D. Sets electrode slope to any value from 014 ph. Slope calibration solution must be ph units from standard solution (step C) Menu items E H repeat for relay setup. Relay Hysteresis Relay Pulse Mode Selected, step E E. Sets relay operation mode Low or High, and setpoint, ph (sec. 5AB) G. Relay Mode Range F. Sets relay hysteresis, ph. Set to zero to disable feature (sec. 5AB) H. Relay Pulse rate G. Sets relay minimum and maximum pulse setpoint, ph (sec. 5C). I. H. Sets relay pulse rate, pulses/minute. To return to VIEW: Last calibration A quick press Optional To restore original value: quick press I. Sets user defi ned setup date for maintenance records. This feature is not an internal timer or calender Quick Reference Calibration Procedures: Point Quick Calibration (recommended): 1. Verify/enter solution temperature ±0.5 C (step B). Set solution standard (step C) 3. Set solution slope (step D) 1Point Calibration (optional): 1. Verify/enter solution temperature ±0.5 C (step B). Set solution standard (step C) Signet 5700 ph/orp Monitor ph Instructions 5

6 6.4 OPTIONS Menu Press keys in sequence will appear during code entry. to continue, F A. 1 Choose: Change: 3 Save: Menu Settings A F: (Factory default displays shown in menu column 1) Contrast Low High A. Selects display contrast: 5 levels B. Loop output 4 ma setpoint B. Sets 4 ma setpoint: ph. 4 ma and 0 ma setpoints are reversible C. D. Loop output 0 ma setpoint ENTER "SAVING" briefly displays C. Sets 0 ma setpoint: ph. 0 ma and 4 ma setpoints are reversible D. Adjusts 4 ma output: 3.0 to 5.0 ma (overrides factory 4.00 ma calibration) E. Loop output 4 ma adjust E. Adjusts 0 ma output: 19 to 1 ma (overrides factory 0.00 ma calibration) F. Loop output 0 ma adjust F. Selects temperature display: C or F. Recalibration is not required when switching from Celsius to Fahrenheit. To return to VIEW: Temp. display A quick press Display, C or F To restore original value: quick press 7. Parts and Accessories Splashproof rear cover # (code ) 5 x 5 inch adapter plate for Signet retrofi t # (code ) Optional surface mount bracket # (code ) Power supply, 10 VAC 4 VAC, # ph buffer kit, ph 4.0, 7.0, 10.0, # (code ) Front snapon bezel, # (code ) 5700 ph/orp instruction sheet, # (code ) 6 Signet 5700 ph/orp Monitor ph Instructions

7 8. Specifications General Compatible electrodes: Accuracy: ±0.% of full scale Input range: ph: Signet 370 ph/orp Preamplifi er/electrode System 0 to 14, optically isolated (standard 0 14 ph dial included) Temperature input: 3 kω Balco, 5 to 10 C (13 to 48 F), optically isolated Enclosure: Rating: NEMA 4X/IP65 front Dimensions: 1/4 DIN, 96 x 96 x 88 mm (3.8 x 3.8 x 3.5 in.) Case: ABS plastic Keypad: Sealed 4key silicone rubber Weight: Approximately 500 g (18 oz.) Electrical Power requirements: 1 to 4 VDC or 1 to 4 VAC, unregulated, 5060 Hz, 10 W max. Relay contacts ( sets): Mechanical SPDT contacts Max. voltage rating: 5 30 VDC, 5 15 VAC, or 3 50 VAC, (power factor = 1.0) Hysteresis: User adjustable Current output: 4 to 0 ma, nonisolated, internally powered, fully adjustable and reversible Update rate: <1s Max loop impedance: 350 Ω with a 1 V instrument supply voltage, 950 Ω with a 4 V instrument supply voltage Accuracy: ±0.1% of max. range Display: Type: Microprocessor controlled aircore meter movement and backlit Alphanumeric x 16 LCD Update rate: <1s Contrast: User selected Relay annunciators: LEDs Noise immunity: Noise emissions: Safety: EN5008 EN55011 EN Environmental Operating temp.: 10 to 55 C (14 to 131 F), 50 C (1 F) max. with optional rear cover Storage temp.: 15 to 80 C (5 to 176 F) Relative humidity: 0 to 95%, noncondensing Altitude: 4000 m max. Pollution degree: Agency Approvals CE, UL listed Manufactured under ISO 9001 Dimensions 96 mm (3.8 in.) Panel Gasket Optional Splashproof Rear Cover # ph 10 RELAY 1 RELAY 1 Mounting Panel Mounting Clamp ( ea.) mm (3.8 in.) 91 mm (3.6 in.) 88 mm (3.5 in.) Side View ENTER Signet Monitor Front View 76 mm (3 in.) 96 mm (3.8 in.) 88 mm (3.5 in.) (Continued) Signet 5700 ph/orp Monitor ph Instructions 7

8 Dimensions 88 mm (3.5 in.) LISTED UL 77CJ Signet Model # V 10 W mv Input Brown wire Iso. Gnd Blue wire T Green wire T White wire V Red Wire Relay V Black wire NO C NC NO C NC 40 ma Relay 1 Patent No. D 376,38 ph/orp 88 mm (3.5 in.) 9 x 9 mm (3.6 x 3.6 in.) Rear View Panel cutout 9. Quick Reference Menu Parameters 9.1 VIEW Menu Setup Parameters (sec. 6.1) Menu Parameters Display Description Range Factory Default A. Process ph Process temperature Process temperature B. Electrode mv input mv C. Current loop output 3 1 ma D. Min Max meter and dial range E. Relay 1 mode Relay 1 setpoint Low, High, or Pulse, Low 4.00 ph F. Relay mode Relay setpoint Low, High, or Pulse, High ph G. Last calibration date H. EASY CAL procedure Two buffers required: ph 4, 7, or 10 (sec. 6.) 8 Signet 5700 ph/orp Monitor ph Instructions

9 9. CALIBRATE Menu Setup Parameters (sec. 6.3) Menu Parameters Display Description Range Factory Default A. Min max meter dial range B. Process temperature Solution temperature 30 C (86 F) C. Manual electrode standard calibration (must be ph units from Slope D. E. F. Manual electrode slope calibration Relay 1 mode Relay 1 setpoint Relay 1 hysteresis (must be ph units from Standard) Low or High Low 4.00 ph 1.00 ph Relay mode and setpoint displays repeat for relay setup G. Relay 1 mode Relay 1 range Pulse ph H. Relay 1 pulse rate pulses/minute 10 pulses/minute I. Last calibration date OPTIONS Menu Setup Parameters (sec. 6.4) Menu Parameters Display Description Range Factory Default A. Display contrast 0 to 5 3 B. 4 ma setpoint ph 0.00 ph C. 0 ma setpoint ph D. 4 ma adjust 3.0 to 5.0 ma 4.00 ma E. 0 ma adjust 19 to 1 ma 0.00 ma F. Temperature display Celsius or Fahrenheit C Signet 5700 ph/orp Monitor ph Instructions 9

10 10. Troubleshooting Display Problem Solution 1. ORP: 1000 mv Input: 998 mv (example ) ORP electrode installed in preamplifi er Remove ORP electrode and replace with recommended ph electrode (sec. ) A. Out Of Range CHECK SENSOR B. CHECK SENSOR? C. Temperature Bad CHECK SENSOR Electrode not installed in preamplifi er Temperature input miscalibrated or out of range during power up Temperature input missing or out of range during power up Temperature input missing or out of range during EASY CAL procedure (sec. 6.) 1) Verify temperature input connections and electrode installation (sec. ) ) Disconnect Green and White preamplifi er wires from rear T and T terminals. Measure resistance across disconnected wires for.9 kω 3.1 kω at 5 C (77 F). If measured resistance is out of range: Wrong electrode installed in preamplifi er (ORP electrode=10 kω). Replace ORP electrode with ph electrode. Faulty preamplifi er contacts, see preamplifi er manual for additional information. Faulty electrode, see electrode manual for additional information. 3) To verify instrument input: Disconnect Green and White preamplifi er wires from rear T and T terminals, then install a 3 kω fi xed resistor across the terminals. Power instrument and verify 5 C (77 F) on display. If 5 C (77 F) is not displayed, calibrate temperature input for 5 C (sec. 6.3B). If instrument displays correctly after calibration, instrument is ok. If error condition persists, instrument requires factory service. Refer to solution steps 1 3 above. Refer to solution steps 1 3 above 3. Out Of Range Use Manual Cal ph buffers other than ph 4, 7, 10 used during EASY CAL procedure or electrode has excess offset 4.! Same Buffer Same ph buffer used for EASY CAL buffer 1 and ph 5.0 C Excessive mv input from preamplifi er Use ph 4, 7, 10 buffers for EASY CAL procedure (sec. 6.). Use manual calibration to set standard and slope (sec. 6.3C, 6.3D) Clean electrode (see electrode manual) then retry EASY CAL (sec. 6.) Use different ph 4, 7, 10 buffer for EASY CAL procedure solution #1 and solution # (sec. 6.3). Faulty preamplifi er, refer to preamplifi er manual for additional information To verify instrument input: Disconnect Brown and Blue preamplifi er wires and Install shorting strap (jumper) across mv input and Iso Gnd terminals. Power instrument and verify 7.00 ph on display. If 7.00 ph is not displayed, calibrate Set Standard input for 7.00 ph (sec. 6.3C) If instrument displays correctly after calibration, instrument is ok. If error condition persists, instrument requires factory service. continued 10 Signet 5700 ph/orp Monitor ph Instructions

11 Display Problem Solution 6.! ph Must Be Or Less ph input out of range or improperly entered during Standard or Slope calibration A) Use two solutions of known ph within range for manual Standard and Slope calibration (sec. 6.3C, 6.3D). B) Enter ph value only within ph during standard or slope calibration (sec. 6.3C 6.3D) 7. Slope Too Close To Standard 8. Value Must Be Or Less ph slope calibration too close to ph standard calibration Relay, 4 ma, or 0 ma setpoint greater than ph (CALIBRATE Menu sec. 6.3D only) Calibrate ph slope using a ph solution ph units from the ph standard solution (sec. 6.3C, 6.3D). Enter setpoint within range (sec. 6.3E) 9. Value Must Be 300 Or Less 10. SETUP READ ERROR Press any Key Relay pulse setting greater than 300 pulses per minute Power fault occurred while saving setup menu entry Enter relay pulse setting within pulses per minute (sec. 6.3H) Press any key to reload factory defaults then reprogram system setup parameters. 11. Maintenance Clean the instrument case and front panel with a soft cloth and a mild liquid soap solution. Notes: Signet 5700 ph/orp Monitor ph Instructions 11

12 George Fischer Signet, Inc., 3401 Aerojet Avenue, El Monte, CA U.S.A. Tel. (66) Fax (66) For Worldwide Sales and Service, visit our website: Or call (in the U.S.): (800) Rev. K 3/06 English/pH George Fischer Signet, Inc Printed in U.S.A. on recycled paper