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1/4 DIN Ramp/Soak Temperature/Process Controllers

1/16 DIN Ramp/Soak Controllers


Item# CN7833

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Quantity Price each
1-9 $136.97
10-24 $130.12
25-49 $123.27
50-99 $116.42
100-499 $109.58
500+ $102.73

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Lead Time ( If not in Stock): 7 Days

1/16 DIN Ramp/Soak Controllers CN7833 CN7833
  • Dual 4-Digit LED Display
  • 8 Ramp/Soak Programs, 8 Segments Each
  • Universal Inputs
  • Autotune
  • Dual Control Outputs
  • RS-485 Communications
  • Free Software
  • Alarm Functions

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Measurement Type
Control Outputs
Form Factor
Number of Inputs
Input Type
Supply Voltage Type
Ramp and Soak
Display Type
Additional Feature
Output Type

Product Specs

The CN7200 Series ¼DIN temperature/process controllers are designed to accept thermocouple, RTD, current or voltage input and provide dual outputs for control. Available outputs include relay/relay, DC pulse/relay, current/relay, or linear voltage/relay. The units can be programmed for ON/OFF, PID, auto-tuning, or manual tuning control methods. The PID control is supported by 64 ramp/soak actions. The CN7200 Series also includes two additional alarm outputs. The second relay output can be reconfigured as a third alarm output. The alarm type can be selected from 13 different preprogrammed alarm functions. The controller features dual LED displays for local indication of process and setpoint values.

Inputs: Thermocouple, RTD, DC voltages or DC current
Display: Two 4-digit, 7-segment
    PV: red, 19 mm (3.4") H
    SV: green, 12.7 mm (1.2") H
Accuracy: ±0.25% span, ±1 least significant digit
Supply Voltage: 100 to 240 Vac, 50/60 Hz
Power Consumption: 5 VA max
Operating Temperature: 0 to 50°C (32 to 122°F)
Memory Backup: Nonvolatile memory
Control Output Ratings:
Relay: SPDT, 5 A @ 250 Vac resistive
Voltage Pulse: 14V, 10 to -20% (max 40 mA)
Current: 4 to 20 mA
Linear Voltage: 0 to 5V, 0 to 10V
Communication: RS-485 MODBUSR A-5-11/RTU communication protocol
Panel Cutout: ¼DIN, 92 mm square (3.622" square)
Dimensions: 96 x 96 x 15.8 mm bezel (3.78 x 3.78 x 0.625")
Panel Depth: 79.2 mm (3.125")
Weight: 425 g (15 oz)
Front Panel Rating: IP66

Rated 2 out of 5 by from Could be a much more user-friendly instrument Although the CN7233 temperature controller that I purchased works, I cannot in good conscience award it any more than a 2 out of 5 stars due to inadequate documentation, bizarre display hieroglyphics, and some questionable logic affecting the user interface. The application is controlling a single-zone pottery kiln - about as simple as it gets. The feature that attracted my attention to the CN7233 is that it can have as many as 8 separate programs (patterns?) in memory with as many as 8 steps in each program (pattern). The documentation in both the Instruction Sheet included with the instrument and the Specifications - Installation and Operating Instructions available on-line fall short in presenting a concise, cogent set of instructions on how to set up, tune, and operate the controller. One item that is missing in the documentation is any detailed description on how to tune the instrument - no examples or other guidance to address this important feature, particularly for the ramp/soak function. The only substantive direction comes from the bold-face warning on page 11 of bulletin E-90-OCN which states: "Do not operate auto-tuning while a ramp function is operating. The ramp function will prevent self tune from operating properly. Make sure that all tuning is set up before operating ramp/soak". And then there is the word "off" found in Link parameter on page 12. What I discovered the hard way is that "Off" really means "On" unless there is an unused step at the end of a pattern. Where is the absolute "end" function? And "SP" doesn't mean set point, but rather where the decimal point goes. The display, IMO, is simply weird. A type K thermocouple is depicted as a reversed lower case "y". "r-S" is where one goes to find the "run" button as well as the "stop" button. The stop button is somewhat important because that is how one selects the program (pattern) to be used for the operation. Is that logical? The CN7233 could be a much better value if both the instructions and the user interface were cleaned up.
Date published: 2020-04-12
Rated 5 out of 5 by from Controller Works as Expected Works as expected, circuit diagram easy to read and overall design is standard, but nice. Interface is not immediately straightforward, but manual does good job of breaking all the functions down in a clear way. Technical support was helpful in determining the the PID controller that best suited my application needs.
Date published: 2021-01-13
Rated 4 out of 5 by from Good for general lab use Fills my light/medium-duty heating and cooling needs. I use it to control metallurgy furnaces, PVD process heaters, hydrogen furnaces and a coolant bath for electrochemistry synthesis. It takes some time to acclimate to the old shcool user-interface, but it's not a deal-breaker. The auto-tune feature helps to keep the process temperature within one degree C when implemented properly.
Date published: 2020-09-28
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On the free software can I program the Ramp/Soak that I would like on the computer or does that have to be done directly on the controller itself

Asked by: Cole123
Thank you for your inquiry. All programming can be done using the software.
Answered by: Application Engineer CB
Date published: 2020-11-06

Documentation says free software for Item# CN7823--- how do I get it?

Asked by: Jerryy
Thank you for your inquiry. You can download the free software from our website located at bottom of product page under SOFTWARE
Answered by: Application Engineer JB
Date published: 2020-02-12

For product CN7653, Dual output, 4 to 20 mA/relay with RS485* means that the PID can control temperature by adjusting a current (4 A to 20 mA)?

Asked by: abcdef
Hi, thanks for your question. Yes, output #1 is an analog control output that can be programmed using the PID tuning parameters to control your process. You can either manually tune the PID values, or use autotune, providing the process is for temperature and you have a set point at least 100 degrees (C or F) above your starting ambient temperature. Please email us at temp@omega.com with any further questions.
Answered by: Jane
Date published: 2019-05-29

Hi, I am trying to run the CN7-A software with my Omega 7800 and my computer is recognizing it as a device and will not read it as a com port, clicking on the device states that there are no available drivers. please help

Asked by: ashley
Hi Ashley, Thank you for the inquiry. The CN7800 series have RS485 output requiring RS485 to USB adapter for most pc's. Please contact our temperature tech support by email TEMP@OMEGA.COM or call 800-359-1660 and select post sales for technical support. Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2021-06-04

Hello OMEGA-Team, we are using an OMEGA CN7200 Temperature-Controller and like to config it by Software. What type of USB-to-RS485 Converter do we need for communication?

Asked by: Frank M
Thank you for your inquiry. You can use the Delta IFD6500.
Answered by: Engineer CB
Date published: 2020-06-05
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