C 7687 Conductivity, Resistivity and TDS controller

The controller can be configured to measure conductivity and/or TDS or other indirect scales during the installation, it's also possible the visualization of resistivity. It provides manual and automatic temperature compensation, if an RTD Pt100 or an RTD Pt1000 is connected. When the RTD is connected, the instruments provides the temperature reading.
FeaturesTechnical Data
The instrument provides:
– measuring display in the range stated by the installed sensor;
– automatic measurement control function
– alarm from the min/max values of the measures, the excessive activation of relays and the presence of the logic inputs;
– programmable dual analog output for recording and acquisition of the measurement values or PID regulation;
– hold / alarm function activated by two external volt free contacts;
– automatic /manual autoclean function.
Inputs: 2 electrodes cells
4 electrodes cells (option)
Pt100 o Pt1000
Zero: ± 10 %, ±5°C, ±9°F
Sensitivity: 60 ÷ 160 %
Resolution: 1/2000, 0.1 °C/°F
Accuracy: 0.2 %
Repeatability: 0.1 %
Non-linearity: 0.1 %
Dual filter software: 0.4 ÷ 50.0 seconds for small and large variations
Dual analog output: 0-20 mA / 4-20 mA Rmax 600 Ω
Dual set points HI/LO: ON/OFF – PID – PFM – PWM, SPST relays
Hysteresis: 0 ÷ 1 %
Delay: 0 ÷ 999.9 seconds
Alarm: SPDT relay with delay 0 ÷ 100.0 seconds
Cleaning function: off / autoclean / manual, relay SPDT
repetition time 0.1 ÷ 100.0 hours
cleaning time 1.0 ÷ 60.0 seconds
holding time 0.0 ÷20.0 minutes
SPST and SPDT relay contacts: 220V – 5 A resistive load
Operating temperature: -10 ÷ 60 °C
Humidity: 95% without condensation
Power supply: 85 ÷ 264Vac – 50/60 Hz
9 ÷ 36Vdc, 12 ÷ 24Vac (option 091.42x)
Terminal blocks: removable
Weight: 1360 g (C 6587)
450 g (C 7687)
Enclosure: ABS, IP 65 protection (C 6587)
Metallic, IP 65 front panel only (C 7687)
Dimensions: 256x230x89 mm (C 6587)
98x98x104 mm, 90x90x95 mm panel cutout (C 7687)
EMC/RFI conformity: EN 61326
Registered design: 002564666-002 (C 6587)
002564666-003 (C 7687)