Cart  |  Contact  |  Help  |  | 
Toll-Free in India 000 800 442 0175
International+65 6415 5353

Conductivity, Resistivity or TDS Controller


Conductivity, TDS and Resistivity Controller | TDS Controller | CDCN-961

USD1,655.10 CDCN-961

  • Monitors conductivity, resistivity and TDS in process solutions and water applications.
  • Menu-Driven Programming
  • NEMA 4X (IP65) Protection
  • Programmable High/Low, and Alarm Relays
  • Dual Backlit LCD
  • Calibration Reminder Via Alarm Relay Setting
  • Isolated 0.4 to 20 mA Output
  • RS485 Output
  • Applications
  • Waste Water Treatment
  • Power Plants
  • Thermo-Electric Plants
  • Pharmaceutical
  • Photographic Industries
  • Soft Drink Industries


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.

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 (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)
    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')
Place Order(Specify Model Number)

What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.

Part Number/Desc.
Availability: 20 weeks
Conductivity resistivity TDS controller
Availability: 1 week
Replacement probe/cell for CDCN-961 controller
Click to expand/minimize a list of what others bought with theCDSA-10
Availability: 1 week
10 µmho/cm conductivity solution, 940 ml bottle
Click to expand/minimize a list of what others bought with theCDSA-45
Availability: 1 week
45 µS/cm conductivity solution
All amounts shown in USD
Note: Comes complete with probe/cell and operator’s manual.
We noticed you are from the US. Visit your local site for regional offers and live support.