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CN8PT-220
Platinum Series Versatile High Performance PID Controllers

Choose a Variant
Data Interface
Display Type
Output Signal
Control Output
2 SSR Relay
SPST Relay, 2 DC Pulse
SPST Relay, DC Pulse, Analog
2 SSR Relay, DC Pulse
2 SSR Relay, Analog output
SPDT Relay, DC Pulse
SPDT Relay, Analog Output
2 SPDT Relay
2 DC Pulse
3 DC Pulse
2 DC Pulse, Analog Output
SPST Relay, 2 DC Pulse, 2 Isolated SPST Relay
SPST Relay, 2 DC Pulse, 2 Isolated SSR
SPST Relay, 2 DC Pulse, 2 Isolated DC Pulse
SPST Relay, DC Pulse, Analog, 2 Isolated SPST Relay
SPST Relay, DC Pulse, Analog, 2 Isolated SSR
SPST Relay, DC Pulse, Analog, 2 Isolated DC Pulse
2 SSR Relay, 2 Isolated SPST Relay
2 SSR Relay, 2 Isolated SSR
2 SSR Relay, 2 Isolated DC Pulse
2 SSR Relay, DC Pulse, 2 Isolated SPST Relay
2 SSR Relay, DC Pulse, 2 Isolated SSR
2 SSR Relay, DC Pulse, 2 Isolated DC Pulse
2 SSR Relay, Analog output, 2 Isolated SPST Relay
2 SSR Relay, Analog output, 2 Isolated SSR
2 SSR Relay, Analog output, 2 Isolated DC Pulse
SPDT Relay, DC Pulse, 2 Isolated SPST relay
SPDT Relay, DC Pulse, 2 Isolated SSR
SPDT Relay, DC Pulse, 2 Isolated DC Pulse
SPDT Relay, Analog Output, 2 Isolated SPST Relay
SPDT Relay, Analog Output, 2 Isolated SSR
SPDT Relay, Analog Output, 2 Isolated DC Pulse
2 SPDT Relay, 2 Isolated SPST Relay
2 SPDT Relay, 2 Isolated SSR
2 SPDT Relay, 2 Isolated DC Pulse
2 DC Pulse, 2 Isolated SPST Relay
2 DC Pulse, 2 Isolated SSR
2 DC Pulse, 2 Isolated DC Pulse
3 DC Pulse, 2 Isolated SPST Relay
3 DC Pulse, 2 Isolated SSR
3 DC Pulse, 2 Isolated DC Pulse
2 DC Pulse, Analog Output, 2 Isolated SPST Relay
2 DC Pulse, Analog Output, 2 Isolated SSR
2 DC Pulse, Analog Output, 2 Isolated DC Pulse
Supply Voltage
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Product Specs
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A/D Conversion | 24-bit sigma delta |
Accuracy | Selectable |
Accuracy Detail | Process Voltage Accuracy: 0.03% Process Current Accuracy: 0.03% Thermocouple Accuracy: Type J: 0.4°C (0.7°F) Type K: 1.0°C (1.8°F), 0.4°C (0.7°F) Type T: 1.0°C (1.8°F), 0.4°C (0.7°F) Type E: -1.0°C (1.8°F), 0.4°C (0.7°F) Type R: 1.0°C (1.8°F), 0.5°C (0.9°F) Type S: 1.0°C (1.8°F), 0.5°C (0.9°F) Type B: 1.0°C (1.8°F), 0.5°C (0.9°F) Type C: 0.4°C (0.7°F) Type N: 1.0°C (1.8°F), 0.4°C (0.7°F) RTD Accuracy: Pt, 0.00385, 100 Ω, 500 Ω, 1000 Ω: 0.3°C (0.7°F) Pt, 0.003916, 100 Ω: 0.3°C (0.7°F) Pt, 0.00392, 100 Ω: 0.3°C (0.7°F) Thermistor Accuracy: 2252 Ω: 0.2°C (0.35°F) 5K Ω: 0.2°C (0.35°F) 10K Ω: 0.2°C (0.35°F) |
Additional Features 1 | Programmable 3 Color Display |
Approvals | UL, cUL, CE, UKCA |
CMRR | 120 dB |
Control Mode | Ramp and Soak, Autotune, Adaptive Tune, PID Control, On-off control, Alarms, Remote Setpoint |
Control Output | 2 SSR Relay |
Current, Max | 4 to 20 mA, 0 to 24 mA scalable |
Cutout Dimensions | 45 x 92 mm |
Data Interface | USB |
Data Interface Note | Connection: USB: Female micro-USB Ethernet: Standard RJ45 USB: USB 2.0 host or device Ethernet Standards Compliance: IEEE 802.3 10/100 Base-T autoswitching, TCP/IP, ARP, HTTPGET |
Digital Filter | Programmable |
Display Size | 21 mm (.82 in) |
Display Type | 4 Digit LED |
Display Type Note | 4-digit, 9-segment LED Display |
Electrical Connection | USB Micro-B Female |
Enclosure Ratings | NEMA Type 1 |
External Fuse Required | External Fuse Required: Time-Delay, UL 248-14 Listed: 100 mA/250 V; 400 mA/250 V (low voltage option) ; Time-Lag, IEC 127-3 Recognized: 100 mA/250 V; 400 mA/250 V (low voltage option) |
Form factor | 1/8 DIN |
Height | 48 mm |
Impedance Input | Input Impedances: Process/Strain: 10M Ω for ± 100 mV, 1M Ω for other voltage ranges; Process Current: 5 Ω; Thermocouple: 10K Ω max ; Auxiliary Input (Remote Setpoint): 3.5K Ω for 0 to 10V, 50K Ω for 0 to 1V, 50 Ω for current |
Input Configuration | Differential |
Input Type | Thermocouple, RTD, Thermistor, mA, Voltage, Strain |
Input Voltage | -100 to 100 mV, -1 to 1 Vdc, -10 to 10 Vdc |
Isolation | ISOLATION Power to Input/Output: 2300 Vac per 1 min test; 1500 Vac per 1 min test (low voltage/power option) Power to Relays/SSR Outputs: 2300 Vac per 1 min test Relays/SSR to Relay/SSR Outputs: 2300 Vac per 1 min test RS232/RS485 to Inputs/Outputs: 500 Vac per 1 min test |
Length | 127 mm |
Line Power | 4 W |
Line Voltage | 90 to 240 Vac ± 10%, 50 to 400 Hz*, 110 to 375 Vdc, equivalent voltage |
Low Power | 3 W |
Low Voltage | 12 to 36 Vdc |
Measurement Type | Current, Strain, Temperature, Voltage |
Measuring Range | Process Voltage: ± 50 mV, ± 100 mV, ± 1, ± 10 Vdc Process Current: Scalable within 0 to 24 mA Thermocouple: Type J: -210 to 1200°C Type K: -270 to -160°C, -160 to 1372°C Type T: -270 to -190°C, -190 to 400°C Type E: -270 to -220°C, -220 to 1000°C Type R: -50 to 40°C, 40 to 1788°C Type S: -50 to 100°C, 100 to 1768°C Type B: 100 to 640°C, 640 to 1820°C Type C: 0 to 2320°C Type N: 250 to -100°C, -100 to 1300°C RTD: Pt, 0.00385, 100 Ω, 500 Ω, 1000 Ω: -200 to 850°C Pt, 0.003916, 100 Ω: -200 to 660°C Pt, 0.00392, 100 Ω: -200 to 660°C Thermistor: 2252 Ω: -40 to 120°C 5K Ω: 30 to 140°C 10K Ω: 20 to 150°C |
Number of Control Outputs | 2 |
Number of Inputs | 1 |
Operating Temperature, Max | 50 °C |
Operating Temperature, Min | 0 °C |
Output Detail | 2 Solid State Relay Outputs;Action: Reverse (heat), direct (cool), or heat/cool Auto-Tune: Operator initiated from front panel Adaptive Tune: User selectable; fuzzy logic continuous PID tuning optimization Control Modes: ON/OFF or the following time/amplitude proportional control modes; selectable manual or auto PID, proportional, proportional with integral, proportional with derivative Cycle Time: 0.1 to 199 seconds |
Output Signal | None |
Polarity | Bipolar |
RTD Type | 100/500/1000 Ω Pt sensor, 2-, 3- or 4-wire; α= 0.00385, 0.00392 (100 Ω only), or α=0.003916 (1000 Ω only) |
Ramp and Soak | Profiling |
Relative Humidity | 90% RH, non-condensing |
Remote Setpoint | Current, Voltage |
Resolution | 0.1° temperature; 10 µV process |
Sampling Rate | 20 Hz (20 updates/second) |
Set Point Adjustment | Menu Configurable |
Supply Power Note | 90 to 240 Vac ± 10%, 50 to 400 Hz*, 110 to 375 Vdc, equivalent voltage.Line Power: 4W, Low Voltage: 12 to 36 Vdc; Low Power: 3W.Low Voltage/Power Option: External power source must meet Safety Agency Approvals; units can be powered safely with 24 Vac power, but no certification for CE/UL is claimed; Excitation Voltage Note- Firmware selectable (no jumpers to set) to 5, 10, 12, and 24 Vdc @ 25 mA |
Supply Power Type | AC |
Supply Voltage | 90 to 240 Vac |
Temperature Stability | Temperature Stability:RTD: 0.04°C/°C;Thermocouple @ 25°C (77°F): 0.05°C/°C (cold junction compensation);Process/Strain: 50 ppm/°C |
Thermistor Type | 2252 Ω, 5K Ω, 10K Ω |
Thermocouple Type | J, K, T, E, R, S, B, C, N |
Warm-Up to Rated Accuracy | 30 min |
Weight | 295 g |
Width | 96 mm |
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PDFs & Manuals
Software & Drivers
Accessories
Show Ratings & Reviews
Rated 2 out of
5
by
tech company owner from
Product okay, omega horrible!
Product is good, omega service and website is horrible! Used to be good 5 years ago, now just superficial marketing and poor technical info for identifying specific product specs. Looking for another supplier.
Date published: 2024-01-06
Rated 3 out of
5
by
Anonymous from
Terrible website and stock
Product is okay, website and delivery is horrible!
Date published: 2023-12-23
Rated 5 out of
5
by
Kits from
Omega PID controller
The PID controller we bought from omega was able to fix our temperature controller which we were struggling for about a month. Would definitely recommend it to other users.
Date published: 2023-12-06
Rated 4 out of
5
by
tom L from
temp controlser
included manual does not provide proper info for programing controller. downloading manual has much needed info.
Date published: 2023-03-19
Rated 5 out of
5
by
NDPIII from
Solid Bright Display
Works great in our Dyno, bright and visible among other instrumentation
Date published: 2022-01-16
Rated 2 out of
5
by
UriB from
Support support support...
We have bought a few of them to control temperature in vacuum chambers. All for ATE systems, meaning they need to be remotely controlled by a computer. The documentation with these PID is ridiculously inadequate, and I am being nice!
We spent all our time trying to configure, control, configure, control... etc.
The technical support is practically non existent.
These are not new products. I would have assumed Omega would invest a little in all those years, just a little, to make working with them easier.
Be aware that if you want to use these PID, you need to put aside a very long time just to understand how they work, as the manuals are useless in most cases.
Date published: 2021-08-18
Rated 3 out of
5
by
Sensor guy from
Good
Very easy to setup and get working. Does a great job with the heat treat oven it is being used on. Unfortunately the USB board connection poped off the unit when i tried to insert the micro usb cable, so I can no longer use it in conjunction with my PC for data logging setup etc (maybe i don't know my own strength or maybe it was a bad solder connection not sure, it was a clean break on the soldier joint though). First time this has ever happened to me on any deice I have ever owned so it goes down a few stars for loosing so much functionality within the first week of ownership. Otherwise great unit.
Date published: 2020-04-10
Rated 4 out of
5
by
Priyanka from
Good Product
I bought this last week and its feature are amazing
Date published: 2019-04-01
Rated 5 out of
5
by
OlehW from
Love it, except one annoying little thing . . .
Replaced a CNiS32 (where 4-button programming was driving me crazy) with a CN32Pt. Got it working OnOff (all I need for now) using Platinum Configurator 1.5.2.0 software in a few hours; BIG improvement over the buttons ! Using a PX309-300AV P-transducer, set scaling to give 20.7 bar at 100mV, set-point 11.0 bar. Great so far. However, cannot set deadband value smaller than 0.1; would prefer 0.05. Any way around this ? Maybe software update ?
Date published: 2018-07-11
Rated 5 out of
5
by
Thomas50 from
Excellent instruments !
We are laboratory of scientific institute and we already purchased 4 Omega Platinum controllers currently working perfectly in 4 new scientific instruments built in our lab giving millions of measurement cycles. We are going now a bit further into development and we need some more purely technical information, for instance can auto-tune be initiated over RS-232 serial protocol (which I currently could not figure out from serial protocol manual and I find command for same thing in modbus manual) and few similar questions. If we want, can we contact someone for such info ?
Thank you and good job making instruments.
Thomas
Date published: 2018-07-06
Rated 4 out of
5
by
David from
Great features in controller, lousy documentation
Purchased controller to receive 0-10V input and 0-10 Analog output. Set up documentation is very lacking. Controller now works very well, but we lost weeks trying to sort out the issues.
Date published: 2016-12-09