China Sewage Water Test pH Meter pH Test

1. ProfilePower supply and output are designed isolated to ensure electrical safetyThere is a protection circuit in Power supply and communication chip , which has a strong With comprehensive protection circuit design, it can work reliably without additional isolation equipment.The circuit is packaged in sensor internal or is packaged in individual metal box, so ,it is well tolerated about environment and easy to installThe RS-485 transmission interface, MODBUS-RTU communication protocol, two-way communication, and can receive remote instructionsCan output more sensor diagnostic information, and the sensor is more intelligentInternal integrated memorizer, which can calibration and setting information for memory storage after power failure.2. Technical parametersMeasurement range:0.00 ~ 14.00 pHResolution: 0.01 pHPrecision: 0.02 pHTemperature compenBall Screw sation model:automatic or manualMeasurement range about temperature:-10.0 ~ 110.0ºCTemperature resolution: 0.1ºCTemperature precision: 0.5ºC3. The power and signal output terminals2 power cords,2 RS-485 signal cords.DC12V power supply. Power fluctuation range : ±10%. The working current is less than 35 Ma, 2000V isolation.The red line:12VThe black line:0VThe yellow line:RS485 interface T/R+The white line:RS485 interface T/R-4. PH digital sensor setting and calibration instructionsSetting instructions about Antimony sensor 01 06 00 23 00 01 B9 C0
Setting instructions about glass sensor 01 06 00 23 00 00 78 00
Setting instructiPump & Vacuum Equipment ons about standard solution 01 06 00 24 00 00 C9 C1 (NIST)
Setting instructions about standard solution 01 06 00 24 00 01 08 01 (USA)
Setting instructions about pH measurement model 01 06 00 22 00 00 29 C0 (PH model)
Setting instructions about manual temperature compensation 01 06 00 20 00 00 88 00 (manual tempLean Pipe & Pipe Rack System erature compensation)
Setting instructions about automatic temperaturOther Safety Products e compensation 01 06 00 20 00 01 49 C0 (automatic temperature compensation)Attention:The midpoint must be calibrated first.
Clean the sensor and put it in a standard solution of 6.86 or 7.00. Stir gently for about 15 seconds.
Enter the calibration mode instruction 01 06 00 40 00 60 88 36
Send the calibrate midpoint instruction. 01 06 00 41 00 04 D8 1D (6.86 or 7.00)
Wait for 1 minute, and read the measurement data and see whether the reading value jumps to 6.86 or 7.00, also can use the calibration status to judge whether the calibration is finished.
Clean the sensor and put it in the standard solution of 4.00, stPackaging Materials irring gently for about 15 seconds.
Enter the calibration model command 01 06 00 40 00 60 88 36
Send calibration low-point instructions 01 06 00 41 00 02 58 1F (4.00 or 4.01)
Wait for 1 minute, read the measurement data and see if the reading value is changed to 4.00, also can use the calibration status to judge whether the calibration is finished.
Clean the sensor and put it in the standard solution of 9.18 or 10.01, stirring gently for about 15 seconds.
Enter the calibration mode instruction 01 06 00 40 00 60 88 36
Send the high-point instructions 01 06 00 41 00 08 D8 18 (9.18 or 10.01)
Wait for 1 minute, read the measurement data and see whether the reading value jumps to 9.18 or 10.01, also can use the calibration status to judge whether the calibration is finished.After entering the calibration status, you can use 01 03 00 43 00 01 CRCH CRCL to check calibration status
0x0000: Successful calibration
0x0001: Calibration not completed
0x0002: Not receive the standard liquid information or no such standard solution
0x0003: The signal cannot be stabilized or the signal is out of range.
0x0004: The slope or offset exceeds the allowable range.