User`s Manual - Spec-Tech
Contents
1. Possible Causes Suggested Solutions Current Out SW3 and SW4 set to all OPEN factory Normal for new system LED off current output is 22 mA setting Install electrode No electrode installed Set SW3 and SW4 correctly S L out Check Sensor SW3 and SW4 not set correctly Retry recycle power System not ready Measured value of the test solution is Use fresh test solutions and restart the During EasyCal the LED blinks outside the 10 tolerance calibration rapidly for 4 seconds The electronics or the electrode is Replace the electronics or the electrode defective Insufficient time allowed for electrode Recalibrate and wait at least 2 minutes after After completing calibration stabilization during Cal procedure placing electrode in solution before pressing procedure the output values are Test solutions are contaminated SW1 inaccurate EZ Cal performed with temp comp Use fresh test solutions and restart the OFF then temp comp turned ON for calibration measurement or vice versa The output of the 2850 indicates The cell constant selection on the 2850 Match the 2850 switch settings to agree with a value that is off by a factor SW3 or SW4 does not match the the sensor being used of 10 ie 10x 100x the correct actual input value Electronic Certification Signet offers conductivity simulators in five different values These tools enable the user to validate the performance of the electronics independently of the electrode2. This requirement is defined by ASTM D 1125 95 Standard Test Methods for Electrical Conductivity and Resistivity of Water which is commonly used for USP 24 applications prey 3 2850 101 1 159 001 392 1 0 uS 40 1 3 2850 101 2 159 001 393 2 5 uS 0 1 es 3 2850 101 3 159 001 394 10 0 uS 40 1 3 2850 101 4 159 001 395 18 2 MO 0 1 rime 3 2850 101 5 159 001 396 10 0 MQ 0 1 Wiis Before using the Simulator Before using the simulators disconnect all electrodes and reset the 2850 Electronics to factory calibration 1 Set all switches on SW3 and SW4 for dual input to OPEN Turn the power on wait at least 3 seconds 2 Press and hold SW1 until the LED D3 comes on steady then goes off again approx 10 seconds 3 When the LED goes off release SW1 Reset is complete To validate channel 1 1 Turn the power off 2 Set SW3 to accept a 0 01 cell constant Leave SW4 in the all OPEN position 3 Install the simulator into the 2850 at the channel 1 conductivity electrode terminals 4 Connect the 2850 output terminals to the appropriate display instrument Turn the power on e The display should indicate a conductivity value within 2 of the simulator value e Ifthe output is x10 or x100 of the correct value recheck step 2 The 2850 is not set to accept a 0 01 cell constant e lf the correct value is displayed the electronics are calibrated to ASTM D 1125 specifications Remove the simulator and reset SWS3 to the correct cell consta
3. line applications directs flow straight into the electrode This configuration reduces the probability of entrapped air bubbles and provides the best continuous sampling of the fluid content If the electrode is mounted vertically in a tee do not recess the electrode orifices inside the tee Mounting upside down may help prevent air entrapment An oversized tee or flow cell may be helpful for inline installations At least 4 threads ANSI B1 20 1 must be engaged to meet the pressure rating as published in the specifications Use the 2850 6X models for in line installations where the electronics must be separated from the electrode Conductivity electrodes with sanitary flange fittings must be installed using this option 4 Tank Installations While the 2850 5X and 6X electronics cannot be submerged either model will accomodate tank installation Select any electrode with a 5 m 15 ft cable The cable may be cut to length but it CANNOT BE EXTENDED The universal adapter included with 2850 6X models can be attached to the top of a tank or mounted to a surface near the tank Adapt the 2850 5X models to tank installations by attaching a clamp to the conduit HKR 2850 Conductivity Resistivity Sensor Electronics GF 3 Wiring 4 20 mA Output version Maximum
4. of output span e Resolution 7 pA Update Rate lt 600 ms e Error Indication 22 mA Standards and Approvals e NEMA 4X IP65 e CE e Immunity EN61326 1 Emissions EN55011 Class B Manufactured under ISO 9001 and ISO 14001 Dimensions 2850 51 52 Integral mount 95 mm lt _ Conductivity Sensor Dimensions 3 74 in 73 7 mm 2 90 in 59 3 m m 2 33 in 3 2839 0 01 cell Operating Range Chart UPW 25 C USP 0 10 Cell 0 01 Cell 0 010 uS 0 055 uS 100MQ 18 2 MQ 1 MQ 0 5 uS 85 mm 3 34 in 2850 61 62 63 Universal mount 95 mm 4 37n 82 mm 3 24 in Bottled Water 41 9 mm 21 5 mm 1 65 in 26 8 mm 0 85 in 1 13 in 3 2841 3 2842 1 0 cell 10 0 cell Cooling Tower Deionization Regen Chemicals Waste Waters Alkali Cleaners Acids Bases a a a oE 200S 1000S 10 000 pS 100 000 uS 20 pS 50 000 9S 200 000 pS GF 400 000 uS 2850 Conductivity Resistivity Sensor Electronics 3 In Line Installations Most of the Conductivity Resistivity electrodes used with the 2850 can be installed into standard 3 4 in NPT or ISO 7 R 4 fittings The 2850 5X models are designed for integral systems where the electronics are attached directly to the sensor For these models select any electrode with a short 6 inch cable The preferred installation for in
5. 1 393 159 001 394 159 001 395 159 001 396 mm Electronics w Universal adapter GF 3 2850 51 3 2850 52 o Electronics w in adapter Description 2850 Sensor Electronics w Digital Output and inch adapter 2850 Sensor Electronics w 4 20 mA Output and inch adapter 2850 Sensor Electronics w Digital Output and Universal adapter 2850 Sensor Electronics w 4 20 mA Output and Universal adapter 2850 Sensor Electronics w Dual Inputs Digital Outputs and Universal adapter Integral 2850 system Digital S L output 0 01 cell NPT threads Integral 2850 system Digital S L output 0 1 cell NPT threads Integral 2850 system Digital S L output 1 0 cell NPT threads Integral 2850 system Digital S L output 10 0 cell NPT threads Integral 2850 system Digital S L Integral 2850 system Digital S L Integral 2850 system Digital S L Integral 2850 system Digital S L output 0 01 cell ISO threads output 0 1 cell ISO threads output 1 0 cell ISO threads output 10 0 cell ISO threads YS rere wv Integral 2850 system 4 20 mA output 0 01 cell NPT threads Integral 2850 system 4 20 mA output 0 1 cell NPT threads Integral 2850 system 4 20 mA output 1 0 cell NPT threads Integral 2850 system 4 20 mA output 10 0 cell NPT threads Integral 2850 system 4 20 mA output 0 01 cell ISO threads Integral 2850 system 4 20 mA output 0 1 cell ISO threads Integral 2850 system 4 20 mA output 1 0 cell ISO thre
6. 4 20 mA CLOSED 20 4 mA 2850 Conductivity Resistivity Sensor Electronics GF 10 Calibration All 2850 Conductivity Resistivity Sensor Electronics are factory calibrated for maximum out of the box accuracy The Easy Cal feature allows calibration to be performed at the sensor a SW2 4 20 mA output range selection switch bank b Power and 4 to 20 mA or Digital S L output terminal block c SW3 and SW4 Electrode Cell Constant selection switch banks d D3 LED indicator e SW1 Easy Cal Push button f Conductivity Electrode connections a b f 10 1 Easy Cal Easy Cal is a single point calibration system During this procedure if the measured value is within 10 of any of the test values listed below the 2850 will automatically recognize the test value and calibrates the output to that value Note The first step Reset is recommended each time an electrode is replaced but is NOT necessary upon initial installation or periodic calibration 1 Reset the 2850 Sensor to factory calibration Set all switches on SW3 and SW4 for dual input to OPEN Apply power wait at least 3 seconds then press and hold SW1 until the LED D3 comes on steady then goes off again approx 10 seconds When the LED goes off release SW1 reset is complete Reset SW3 and SW4 to the proper settings Place the electrode sensor assembly into the conductivity test solution appropriate to your operating range Shake the electrode to dislodge a
7. Signet 2850 Conductivity Resistivity Sensor Electronics ENGLISH 7 Wiring Dual Digital Output S3L version 8 Cell Constant Selection 9 Range Selection for 4 to 20mA Output 3 2850 090 1 Rev C 08 07 English SAFETY INSTRUCTIONS WARNING 1 Depressurize and vent system prior to installation or removal 2 Confirm chemical compatibility before use 3 Do not exceed maximum temperature pressure specifications 4 Wear safety goggles or faceshield during installation service 5 Do not alter product construction 6 When using chemicals or solvents care should be taken and appropriate eye face hand body and or respiratory protection should be used Contents 1 Description 2 Specifications 3 In Line Installation 4 Submersible Installation 10 Calibration 5 Wiring 4 20 mA Output version 11 Maintenance 6 Wiring Digital Output SSL version 12 Ordering Information 1 Description Signet 2850 Conductivity Resistivity Sensor Electronics provides a two wire 4 to 20 mA output or a digital interface in S L format The 4 to 20 mA output models provide eight ranges for each electrode cell constant plus the ability to invert each range The Easy Cal feature allows the devices to automatically recognize standard conductivity test solution values for simple field calibration 2 Specifications General Compatible Electrodes All Signet models with PT 1000 RTD Materials and Shipping Weight e Integral mount PBT e Rem
8. ads Integral 2850 system 4 20 mA output 10 0 cell ISO threads Description Liquid tight connector kit 1 set 1 2 in NPT Liquid tight connector kit 1 set PG 13 5 Liquid tight connector kit dual cable gland Plug in NIST traceable recertification tool 1 0 uS Plug in NIST traceable recertification tool 2 5 uS Plug in NIST traceable recertification tool 10 0 uS Plug in NIST traceable recertification tool 18 2 MQ Plug in NIST traceable recertification tool 10 0 MQ GFt Cond Resist Simulator 95 mm lt 3 74in gt 85 mm 3 34 in e 1 0 uS i ix For use with Signet 2850 Conductivity NIST Traceable 3 2850 51 XX 3 2850 52 XX Integral System 3 2850 101 1 NIST traceable recertification tool 1 0 uS Georg Fischer Signet LLC 3401 Aerojet Avenue El Monte CA 91731 2882 U S A Tel 626 571 2770 Fax 626 573 2057 For Worldwide Sales and Service visit our website www gfsignet com Or call in the U S 800 854 4090 3 2850 090 1 Rev C 08 07 English Georg Fischer Signet LLC 2006 Printed in U S A on Recycled Paper
9. ield n Analog Output 1 if applicable s Analog Output 2 4 enibi ig Sensor 1 GF 2850 Conductivity Resistivity Sensor Electronics 8 Cell Constant Selection Cell Constant Selection e Switch banks SW3 and SW4 are used to select the CELL CONSTANT of the electrode The Dual Input model is illustrated Single input models use only SW3 e Make all switch settings before connecting power Switch changes made with the power ON will take 15 20 seconds before becoming effective e Use SW3 1 3 to select the cell constant for the first sensor e Use SW3 4 to disable the PT1000 Temp Compensation function in the 2850 as required for USP applications This disables the function for BOTH CHANNELS e Use SW4 1 3 to select the cell constant for the second sensor e Set SW4 4 to OPEN to disable the second channel SW3 Cell Constant and Temp Compensation 1 2 3 4 For Cell Constant O O O 0 01 cm C O O 0 1 cm C O O 1 0 cm O C O 10 0 cm O C O 20 0 cm Open Temp Comp ON Closed Temp Comp OFF 1 2 and 3 operate the same as SW3 4 turns turns channel 2 OFF when set to OPEN Open Off Closed On 9 Range Selection for 4 to 20mA Output The Range selection switch bank SW2 provides eight range selections for each cell constant Each range can be inverted making a total of 16 range option
10. length of 4 20 mA loop is 300 meters 1000 ft IMPORTANT Provide Earth Ground as ae indicated by symbol SHIELD Temp IN WHITE Signal RTN BLK Signal IN RED Wiring Digital Output S3L version PD g g I O Module 3 8900 401 X SES The digital output is compatible with the DC B Signet 8900 Multi Parameter Controller i Q Frequency SVDC Black aa 7 Input 2 S Refer to the wiring section of the 8900 oe ae oF manual to determine cable length E GND White Shieta OM ake a 5VDC Black limitations ah S3L Red GND White Shield IMPORTANT Provide Earth Ground as renee Analog Output 2 2 l I pal OEE j s Signal RTN indicated by symbol Wiring Dual Digital Output S3L version Dual channel input is available on digital Sensor Connections models only Cable SHIELD Sensors may be the same or different cell omoara IN NANE constants Signal return BLACK If a dual channel model is used with a single Signal IN RED sensor connect it to channel 1 and set all of oaen aa the channnel 2 switches to OFF 5VDC Black Freq Input Red GND Shield IMPORTANT Provide Earth Ground as LL 2 GND White Shield Fear 5VDC Black indicated by symbol toa S3L Red GND White Sh
11. nt before reinstalling the electrode e Ifthe correct value is not displayed contact the factory To validate channel 2 Turn the power off Set SW4 to accept a 0 01 cell constant Install the simulator into the 2850 at the channel 2 conductivity electrode terminals Set SW3 switches to the all OPEN position Turn the power on and repeat step 4 Remember to reset all switches to their correct position before resuming normal operation oe ON 2850 Conductivity Resistivity Sensor Electronics GF 7 12 Ordering Information Mfr Part No 3 2850 51 3 2850 52 3 2850 61 3 2850 62 3 2850 63 3 2850 51 39 3 2850 51 40 3 2850 51 41 3 2850 51 42 3 2850 51 39D 3 2850 51 40D 3 2850 51 41D 3 2850 51 42D 3 2850 52 39 3 2850 52 40 3 2850 52 41 3 2850 52 42 3 2850 52 39D 3 2850 52 40D 3 2850 52 41D 3 2850 52 42D Parts and Accessories Mfr Part No 3 9000 392 1 3 9000 392 2 3 9000 392 3 3 2850 101 1 3 2850 101 2 3 2850 101 3 3 2850 101 4 3 2850 101 5 3 2850 61 3 2850 62 3 2850 63 95 mm lt _ 3 74 in gt 82 3 24 in E Code 159 001 398 159 001 399 159 001 400 159 001 401 159 001 402 159 001 339 159 001 340 159 001 341 159 001 342 159 001 343 159 001 344 159 001 345 159 001 346 159 001 347 159 001 348 159 001 349 159 001 350 159 001 351 159 001 352 159 001 353 159 001 354 Code 159 000 839 159 000 841 159 001 430 159 001 392 159 00
12. ny air bubbles visible on the surface of the electrode e 146 93 uS 1408 8 uS 12856 uS per ASTM D1125 95 e 10 uS 100 uS 200 uS 500 uS 1000 US 5000 US 10 000 US 50 000 uS 100 000 uS Allow at least 2 minutes for the electrode response to stabilize Press and hold SW1 for approximately 8 to 10 seconds During this time the LED will come on steady then go back off If the LED blinks several times rapidly the calibration was not successful See the troubleshooting section Calibration is complete Return the system to service Calibrating the Dual channel model 3 2850 63 The 2850 63 can only be calibrated if both channels are used or if channel 2 is disabled e To disable channel 2 Set SW4 4 to OPEN Place each sensor into a test solution that represents the operating range of that sensor When SW71 is pressed the 2850 will calibrate both channels simultaneously Dual channel applications usually include one sensor with a smaller cell constant and one sensor with a larger cell constant Place the larger cell constant on channel 1 This allows periodic recalibration of the larger cell by simply turning channel 2 OFF GF 2850 Conductivity Resistivity Sensor Electronics 11 Maintenance e The 2850 requires no periodic maintenance e Coatings on the electrode may cause slow response or drift Clean metallic surfaces with a mild detergent and a non abrasive brush or cotton swab 11 1 Troubleshooting LED and Output Condition
13. ote mount PBT Temperature Compensation 0 75 kg 1 75 lb 0 75 kg 1 75 lb PT 1000 RTD 2 per C Easy Cal Automatic recognition of the following conductivity values e 146 93 uS 1408 8 uS 12856 uS 25 C Test solutions Per ASTM D1125 95 e 10 pS 100 uS 200 uS 500 uS 1000 US 5000 US 10 000 uS 50 000 uS 100 000 uS 25 C Electrical Power 12 to 24 VDC for 4 to 20 mA output 5 VDC 5 regulated 3 0 mA max for Digital S L output Reverse polarity and short circuit protected Digital S L Output Serial ASCII TTL level 9600 bps e Accuracy Conductivity 2 of reading Temperature 0 5 C e Resolution Conductivity 0 1 of reading Temperature lt 0 2 C e Update Rate Single channel models lt 600 ms Dual channel models lt 1 2 s Available data via Digital S L Output Raw conductivity e Calibrated conductivity e Calibrated temperature compensated conductivity e Temperature Error Indication Open input and out of range diagnostics for temperature or internal electronic error Current Output e Field selectable ranges e Factory set Span 0 01 cell 2819 2839 0 10 cell 2820 2840 1 0 cell 2821 2841 10 0 cell 2822 2842 20 0 cell 2823 4 to 20 mA 0 to 100 uS 4 to 20 mA 0 to 1000 uS 4 to 20 mA 0 to 10 000 uS 4 to 20 mA 0 to 200 000 uS 4 to 20 mA 0 to 400 000 uS S a ro wa e Max Loop Resistance 50 0 12 VDC 325 Q 18 VDC 600 Q 24 VDC e Accuracy 2
14. s e Select a range from the table below and set SW2 as indicated Example refer to shaded selections of chart The electrode installed is the 3 2840 1 with a 0 10 cell constant e The required output is 4 20 mA 0 100 pS e Set SW2 switch bank to C C O O To invert range 4 20 mA 100 0 uS Close switch 4 0 10 Cel Resistivity Ranges in BOLD Fe cleclo viam efe Oto 1 pS 1to 0 uS 0 01 Cell Oto 2 uS 2 to 0 uS Oto5us 5to0 pS Oto 10 uS 10 to 0 pS 0 to 50 uS 50 to 0 uS 0 to 100 uS 0 01 cm 1 Closed Open Closed Open Closed Open Example 1 0 cell constant temp comp ON E E E ie Closed Zl EEE Sean 1 2 Open Closed Open Example 1 0 cell constant temp comp OFF Closed Closed Open Open C Closed O Open 10 0 Cell 0 to 5 000 uS 5 000 to 0 uS 0 to 10 000 pS 0 to 20 uS 20 to 0 uS 0 to 50 uS 50 to 0 uS 0 to 100 us 100 to 0 uS 0 to 500 pS 500 to 0 uS 0 to 1000 uS 0to5 ys 5to0 us 100 to 0 uS 0 to 200 us 200 to 0 uS 0 to 500 pS 500 to 0 pS O to 1 000 uS 1 000 to 0 pS 1 000 to 0 pS 0 to 2 000 uS 2 000 to 0 uS 0 to 5 000 uS 5 000 to 0 uS 0 to 10 000 pS 10 000 to 0 uS 10 000 to 0 pS 0 to 50 000 pS 50 000 to 0 uS 0 to 100 000 uS 100 000 to 0 uS 0 to 200 000 uS 200 000 to 0 uS 0 to 200 000 uS 200 000 to 0 uS 0 to 400 000 uS 400 000 to 0 uS Switch 4 inverts the output OPEN
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