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Help CenterC 7687 Digital Conductivity Transmitter With 0.1μS/cm Resolution and RS485 Modbus
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Application of C 7687
It can be used in conjunction with various K coefficient conductivity electrodes.
For drinking water, food and beverages, chemicals, printing, irrigation, water treatment.
This controller can be used to measure conductivity and/or TDS or other indirect measurement values, and can also achieve resistance measurement and display.
If connected to RTD Pt 100 or RTD Pt 1000, manual and automatic temperature compensation can be provided.
When connected to RTD, the instrument can also provide temperature readings.
This instrument provides:
- Display of measured values according to the range of the matching sensor
- Automatic measurement control function;
- Low/high measurement, set point timeout operation and logic input control alarm;
- Programmable dual analog output for recording and obtaining measured values or PID regulation;
- Hold/Alarm function activated by two external passive contacts;
- Automatic/Manual automatic cleaning function. Specification
Display: Multi-line graphic display
Input: 2 or 4 (refer to 091.1382 option) Electrode conductivity probe
Range:
From 0 to 200.0 nS to 0 to 2000 mS
From 0 to 100.0 ppb to 0 to 1000 ppt
From 0 to 99.999 ohms to 0 to 999.99 megohms
Indirect measurement related to coefficients or tabular method
-10.0 to 110.0 °C / -14.0 to 230.0 °F
2 set points, with minimum/maximum function, lag and delay time programmable
Analog output: 0-20 or 4-20 mA isolated output, for PID regulation or measurement transmission
Min/max alarm relay, optional activation/deactivation function
Parameter configuration has two access levels, access code is set and selected by the user
Two logic digital inputs, selectable, for hold or alarm functions
Power supply: 85/264 Vac - 50/60 Hz, 5 VA
Enclosure: Metal, front panel protection level: IP 65
Dimensions: 98x98x104 mm (90x90x95 mm rear panel housing dimensions)
Patented appearance: 002564666-003 Optional options
091.427 Power supply 9/36 Vdc - 24 Vac
091.1381 Input compatible four-electrode probe
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