Conductivity, Resistivity, Or TDS Controller

The CDCN-961 conductance, resistance or total dissolved solids (TDS) controller is designed for inline monitoring of process solutions and water applications.

The CDCN-961 has simple menu driven programming for easy setup. Available relays can be programmed for control, alarm or as a calibration reminder. The transmitter output is also programmable from the keypad eliminating the need for potentiometer or dip-switch settings. The calibration function automatically recognizes the buffer solution resulting in a simple and straight forward system calibration.

Specifications
Conductivity Range:
    0.000 to 3.000, 30.00, 300.0 µS/cm
    0.000 to 3.000, 30.00, 300.0 mS/cm
Resistivity Range:
    0.3 to 30.0 M?cm
    3 to 300 M?cm
TDS Range:
    0.000 to 3.000, 30.00, 300.0 ppm
    0.000 to 3.000, 30.00, 300.0 ppt
Resolution:
    0.001/0.01/0.1 µS/cm
    0.001/0.01/0.1 mS/cm
    0.1 M?cm
Accuracy: ±1% FS
Temperature Range: -0.5 to 130°C (31.1 to 266°F)
Temperature Resolution /Accuracy: 0.1°C/ ±0.5°C
Cell Constant: K = 0.01, 0.1, 1, 10
Line Resistance Compensation: 0.0 to 20.0 ?
Temperature Sensor: Pt1000
Signal Output/Load: 0/4 to 20 mA/600?
Output Interface: RS485
Relay Specification: 3 SPST/250V 1A
Control Hysteresis Band: 0.1 to 10% FS
Frequency of Cleaning Time: 1 to 999 hours 1 to 999 seconds
EMC Standard: EN 50081-1/EN 50082-1
Operation Temperature: -10 to 50°C (14 to 122°F)
Operation Humidity: 10 to 95%
Housing: NEMA 4X (IP65)
Dimensions: 100 W x 108 L x 136 Dia mm (3.93 x 4.25 x 5.35″)
Panel Cutout: 93.5 L x 93.5 W mm (3.68 x 3.68″)
Weight: 1650 g (58 oz)
Accessory:
    Conductivity Electrode: K=1.0
    Material: PPS/graphite
    Test Range: 0 to 50.0 mS/cm
    Temperature Range: 0 to 80°C (32 to 176°F)
    Temperature System: Pt1000
    Cable: 5 m (16.4′)