Conductivity, Resistivity or TDS Controller

€ 1 342,30 excl. VAT

OMEGA Engineering

Product code

can be ordered Watch availability - date of dispatch to be specified

Menu-Driven User Set-up. IP65 (NEMA 4X) Enclosure. High/Low, and Alarm Relays. Dual Backlit LCD. Calibration Reminder Via Alarm Relay Setting. Isolated 0.4 to 20 mA Retransmission Output. RS485 Output. More

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

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


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 MΩcm
    3 to 300 MΩcm
TDS Range:
    0.000 to 3.000, 30.00, 300.0 ppm
    0.000 to 3.000, 30.00, 300.0 ppt
    0.001/0.01/0.1 µS/cm
    0.001/0.01/0.1 mS/cm
    0.1 MΩcm
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 Ω
Temperature Sensor: Pt1000
Signal Output/Load: 0/4 to 20 mA/600Ω
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
Operation Humidity: 10 to 95%
Enclosure: NEMA 4X (IP65)
Dimensions: 100 W x 108 L x 136 Dia mm
Panel Cutout: 93.5 L x 93.5 W mm
Weight: 1650 g
    Conductivity Electrode: K=1.0
    Material: PPS/graphite
    Test Range: 0 to 50.0 mS/cm
    Temperature Range: 0 to 80°C
    Temperature System: Pt1000
    Cable: 5 metres