Your Source for Process Measurement & Control
Dual Channel Conductivity-ResistivityController
- 2-Channel Input
- Simultaneous Display
- AC Line-Voltage or DC Powered
- Display and/or Control: µS, mS, PPM or PPB (TDS), kohms, Mohms, % Rejection, Difference, Ratio, °C or °F
- 3 Fully Scalable 4 to 20 mA Outputs
- Up to 4 Programmable Relays
- Time Delay Relay Function
- Proportional Pulse Control Capability
- Meets USP Requirements
- Programmable Temperature Compensation
- Output Simulation for Complete System Testing
- Simple Push-Button Operation
- 1 /4 DIN, NEMA-4X/IP65 Enclosure with Self-Healing Window
Description The CDCN-91 series dual channel conductivity/resistivity controller is a two-channel input device equipped with three scalable 4 to 20 mA outputs and four programmable relays. A selector switch activates two open collector outputs in place of two of the relays for extraordinary output versatility. Dual input and advanced control capability, including percent rejection, difference and ratio calculations, together with the CDCE-91 series conductivity sensors listed below, form the perfect measurement and control system for water treatment applications and more. Two versions are available: one accepts AC line-voltage, the other low voltage DC for power. The four-button keypad arrangement with intuitive software design is user-friendly, and the NEMA-4X/IP65 integrity of the front panel can be extended to the entire enclosure by using the optional rear cover kit.
Compatible Sensors: CDCE-90 series standard conductivity/resistivity sensors
Conductivity:0.055 to 400,000 µS/cm
Resistivity: 10 K½/cm to 18.26 M½/cm (0.055 to 100 µS/cm)
TDS: 0.001 to 999999 ppm or ppb (display limit)
Temperature: PT1000: -25 to 120°C (-13 to 248°F)
Conductivity/Resistivity: ±2% of reading
Power Requirements: 3-8860-AC: 100 to 240 Vac ±10%, 50-60 Hz, 20 VA 3-8860: 11 to 24 Vdc ±10% reg., 0.5A max.
Display: Alphanumeric 2 x 16 LCD
Contrast: User selected, 5 levels
Update rate: 1.5 seconds
Current Outputs: (3 each) 4 to 20 mA, isolated, fully adjustable and reversible.
Max. Loop Impedance: 150ohm @ 12V, 450ohm @ 18 V, 750ohm @ 24 V
Update Rate: Approx. 100 mS
Accuracy: ±0.03 mA @ 25°C, 24 Vdc
Open Collector Outputs: (2 each) Isolated, 50 mA sink or source, 30 Vdc max. pull-up voltage.
Operational Settings: Hi, Lo, USP, Pulse, Off
Hysteresis: User adjustable Time Delay: 0 to 6400 seconds Maximum
Pulse Rate: 400 pulses/minute
Alarm Contacts: (up to 4 each) SPDT Relays
Maximum Voltage Ratings: 5A @ 30 Vdc or 5A @ 250 Vac
Rating: NEMA-4X/IP65 front and back with optional NEMA-4X Rear Cover Kit
Materials: Case: PBT Window: Polyurethane-coated polycarbonate Keypad: Sealed 4-key silicone rubber
Weight: CDCN-91AC: Approx. 581 g (20.5 oz) CDCN-91: Approx. 544 g (19.2 oz)
Please download the full product specifications for additional technical information and a complete list of all models available.
See CDCE-90-001, CDCE-90-01, CDCE-90-1, CDCE-90-10, CDCE-90-20 for a complete list of available conductivity cells.
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