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1/16, 1/8, and 1/4 DIN Temperature and Process PID Controllers

CND3 Temperature and Process PID Controller
  • RoHS Icon
  • CE Approved
  • UL cULus Listed


Item# CN08D3-R-AC

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 C$281.05
10-24 C$267.00
25-49 C$252.95
50-99 C$238.89
100-499 C$224.84
500+ C$210.79

In stock

Lead Time (If not in stock): 20 weeks
CND3 Temperature and Process PID Controller CN08D3-R-AC CN08D3-R-AC
  • Base Model Starting from $80
  • Fast Sampling Time 0.1 sec
  • Heater Disconnection Detection
  • All 1/4, 1/8, 1/16 DIN Models UL/cUL Certified

CN08D3-R-AC Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Control Outputs
Form Factor
Supply Voltage Type
Output Type
Measurement Type
Number Of Inputs
Input Type
Ramp And Soak
Display Type

The New Omega temperature & process controller CND3 Series is designed with upgraded hardware and higher specifications to offer smart operation, fast response, and easy to use, plus user-friendly and user-defined function keys. With Self-Tuning PID and FUZZY temperature control functions, controllers can be installed in both open space or confined space applications and are capable of presenting a smooth temperature control curve.

Applications Include: Machinery for the printing, food packaging, solar panel manufacturing, and high-tech electronics industries.

    AC Power: 100 to 240 VAC, 50/60Hz, 5VA max
    DC Power: 24 VDC ±10%, 5W max
Display: 2 line by 4-digital, FSTN LCD negative image transmissive with backlight
    PV Display: Orange color backlight
    SV Display: Green color backlight
Certification and Compliances:
Safety: UL Recognized Component, File E243710 Vol. 1
EC Declaration LVD: EN61010-1; 2010
EMC: EN61326-1; 2013, EN61131-2; 2007, EN61000-6; 2005, EN61000-6-4; 2007/A1; 2011 IP66 Enclosure rating (face only), IEC60529 Edition 2.1 2001-02
Sample Rate: 100ms
Sensor Input Overvoltage Rating: 15 Vdc
RTD Inputs
    Type: 3 wires
    Excitation: 180µA
    Lead Resistance: 15OΩ max per wire
    Resolution: 1 or 0.1ºC for all type
Input Impedance: Approx. 4.7MΩ
Lead Resistance Effect: -0.3µV/Ω
Cold Junction Compensation: Less than 1.5ºC typical (max 2.0ºC) error over -10 to 50ºC ambient temperature range
Resolution: 1 or 0.1ºC for all type
Temperature Indication Accuracy:
±(0.3% of span, +1ºC) at 25ºC ambient after 20 minutes warm up. Including NIST conformity, cold junction effect, A/D conversion errors and linearization conformity

Process Indication Accuracy

*Depending on the rating of resistor 249Ω built in.

Remote Set-Point Input:
DC 0 to 10V Linear Voltage Input: Opening Jumper, resolution: 156µV/scale
DC4 20mA/0 to 20mA Input: Shorting Jumper, resolution: 0.63µA/scale
User Input: (Event Input)
    ON Resistance: 1KΩ Max.
    OFF Resistance: 100KΩ Min.
Response Time: 1 sec.
CT Input:
    Opening Jumper for Max 30A Measurement with 30A CT Ring, Resolution: 0.1A
    Shorting Jumper for Max 100A Measurement with 100A CT Ring, Resolution: 0.1A
Relay Output:
Type: Form A
Contact Rating: 5A @ 250 VAC or 30 VDC (Resistive Loading)
Pulse Voltage Output:
Rating: DC 12V ±10%, 40mA max with short protection.
Current Output:
DC 0 to 20mA/DC 4 to 20mA output, max resistive loading 500Ω
Resolution: 2.14µA/scale
Linear Voltage Output:
DC 0 to 10V Output, min Resistive Loading 1KΩ Resolution: 1.1mV/scale
Retransmission Output
DC 0 to 20mA/DC 4 to 20mA Output, Max Resistive Loading 500Ω Resolution: 2.09µA/scale
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Rated 3 out of 5 by from Outstanding controller, abysmal manual. This would be a 5+ star product if it weren't for the extraordinarily poor manual. This is a complex controller with a tremendous number of features and settings that can handle very difficult process control problems easily...once you figure out how to use it. Technical support, while very well meaning and committed to helping, was of not much assistance as they also relied on the same manual, and generally suggested "reading the manual" as a way out. I wouldn't have called if I hadn't read the manual. I will admit, that I am old, but I have been using Omega controllers for decades with few problems. The descriptions in the manual for this excellent controller were abysmal.
Date published: 2021-06-26
Rated 1 out of 5 by from DONT DO THSI TO YOURSELF! Extremely hard to program. You don't want to be spending hours just trying to program a simple step heating process and it still not working. Instructions aren't the best. There is no sense of hierarchy in the instruction steps nor a clear description of what each term means.
Date published: 2023-11-14
Rated 5 out of 5 by from Already purchased a second time Controller was shipped and received quickly, works perfectly for our temp control at the brewery.
Date published: 2023-09-13
Rated 5 out of 5 by from Capable, Simple, Affordable Controller Handy little controller that has worked flawlessly so far. Installed to replace the failing electronics in a drying oven and found it easy to adapt to relatively low temperature use with the appropriate limits and alarms. Has brought control temperatures (using the same sensor) within 2C of the setpoint compared to 10C with the older electronics.
Date published: 2022-09-12
Rated 1 out of 5 by from DON'T The unit was so hard to program that even with Omega engineers helping/instructing me over the phone I could not get it to work. After 4 calls and about 8 hours on the phone I gave up.
Date published: 2021-03-12
Rated 4 out of 5 by from Great Controller Great controller but Tech Support thru "Contact Support" on website had little knowledge of how to help with controller functions. Some trial and error, and too much manual reading to make it do what I wanted.
Date published: 2024-06-24
Rated 4 out of 5 by from Great programmable controller This controller is just what I needed to upgrade my existing furnace controller to a controller with program/profile capabilities. It does everything I need it to do for this application. The only drawback is that the buttons are difficult to push, but once set up, this is a minor issue.
Date published: 2023-03-06
Rated 5 out of 5 by from Cost Wise This is a cost wise controller that performs well. Omega is a trusted Company I have used for years.
Date published: 2022-02-01
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do you have an example of setting up a pattern in the CND3 controller? I have set the pattern 0, turned on prog mode. Put system in RUN, it just heats and heats. Does the pattern wait to hit temperature before moving on

Asked by: Kirkllwork
Thank you for the inquiry. Please forward this in an email to TEMP@OMEGA.COM so that we can help you trouble shoot the problem. Note; Start you first target temperature to ambient room temp. Best regards OMEGA
Answered by: AENwlk
Date published: 2020-07-24

Hi. CN16D3-L-AC PDI controller, What ore the outputs options and if more than one. How do I change the output mode.

Asked by: Maintenence
The specific model number CN16D3-L-AC has one Linear Voltage output only.
Answered by: ApplicationsEngineerANB
Date published: 2020-08-27

Can the CN16D3-M-DC float since it is being suppled with 24 V DC?

Asked by: kls1
Thank you for your inquiry. This model operates on DC Power: 24 VDC ±10%, 5W max and does not require an earth ground connection.
Answered by: Application Engineer JB
Date published: 2021-12-13

Can the variables, in particular P, be negative?

Asked by: kls1
Thank you for your inquiry. No it can not be negative.
Answered by: Application Engineer CB
Date published: 2021-09-20

Do you have a heater contactor for running (2) 1500 Watt, 240 VAC heaters ? Need (2) contactors each rated for 10 or 15A, in an enclosure.

Asked by: Iceman
Hi Iceman, Thank you for the inquiry. Our control relays are currently limited to 10 A service; Best regards OMEGA
Answered by: AENorwalk
Date published: 2020-04-02

omega recommend a cm16d3-m-ac controller how do i hook up wires to retransmit temperature signal to a plc

Asked by: james o
The output of this controller is a 'powered output' so simply run terminal # 5 (+) to the Positive input of your PLC, and #4 (-) to the Negative input of your PLC.
Answered by: dfrisby88392
Date published: 2020-03-26

Hi, Model CN16D3-M-AC --> Can you confirm this would work connecting the DC output of controller to the control of a SSR model SSRL240DC10? thx!

Asked by: directandrew
Hi Directandrew, This will not work. You'll need the version with DC pulse; CN16D3-S-AC. Best regards, Omega
Answered by: NorwalkAE_RS
Date published: 2021-01-13

What is the depth of the CN16D3-M-AC controller? Could not find the info in the manual or via chat.

Asked by: JFWp
Thank you for your inquiry! The depth needed for the panel cutout is 79.7mm. If you need the depth for the entire controller itself please reach out to
Answered by: Application Engineer JM
Date published: 2021-05-28
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