DISCONTINUED Conductivity Controllers


 | CDCN-90A

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  • Dual Isolated Inputs
  • Modular Field Installable Analog Output Cards
  • Hi/Lo and Proportional Relay Control Modes for All Relays
  • % Rejection Mode for Conductivity Probe Comparison
  • Menu Driven Calibration, Setup and Operation


The new CDCN-90A is specifically designed to monitor and control conductivity levels of aqueous solutions. The compact 1 /4 DIN enclosure is NEMA 4X/IP65 rated and ideal for installations with limited space. Modular output cards can be customized to meet your requirements and are field installable. Output options include 4 to 20/0 to 20 mA, 0 to 5/0 to 10 Vdc card, 2 relay card and dual proportional relay card. Relays can be separately configured to operate as HI or LO alarms or proportional relays can be set for pulse rates from 1 to 120 pulses per minute. All functions are easily accessed and programmed from the front keypad. The two-line LCD features a 4 1 /2 digit main display and eight character alphanumeric line that provides calibration, setup, and operation instructions. Standard displays include conductivity and relay status information. Display options include µS, mS or ppm. In addition solution temperature can be quickly accessed with the touch of a button.

Please download the PDF file below for full product specifications

Controller Conductivity Range: 1 to 400,000µS
Resistivity Range: 10k ohm to 18.3m ohm
Isolation: 500 Vdc
Sensor Compatibility: CDCE-90 Series
Display: Upper, 4 1 /2 digit, 0.5" H; Lower 8 digit 0.3" H, 4 relay status annunciation
Display Accuracy: ±1% of reading
Output Accuracy: ±0.5% FS
Memory Backup: Non-volatile RAM
Temperature Compensation: Automatic Pt1000
Enclosure Material: ABS plastic
Rating: NEMA-4X/IP65 front
Power Requirements: 17 to 30 Vdc @ 0.5 A max. and or 90 to 132 Vac or 180 to 264 Vac (jumper selectable)
Noise Immunity: Meets IEC 801-2 level 3, IEC 801-3, level 2 Ambient Conditions
Operating Temperature: 0 to 55°C (32 to 131°F)
Relative Humidity: 95% max. non-condensing
Optional Output Cards
PHOR-90-R2 Dual Relay Card
Contacts: 2 SPDT output
Rating: 5 A @ 250 Vac or 30 Vdc maximum resistive load
Dual Proportional Relay Card
Contacts: 2 SPST 5 A @ 250 Vac, 30 Vdc maximum resistive load (For use with 2 pulse frequency metering pumps. See pages H-3 to H-11 for details)
4 to 20/0 to 20 mA Output Card
Response Time: 2.5 sec for 100%
Maximum Loop Resistance: 425 ohms
Isolation: 500 Vdc
0 to 5/0 to 10 Vdc
Output Card
Response Time:
2.5 sec for 100%
Minimum Load Resistance: 1 K ohm
Isolation: 500 Vdc


Baixar CDCN-90A - Conductivity/Resistivity Controller
Baixar CDCE-90 - CDCE-90 Series Conductivity Sensor Manual
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