text.skipToContent text.skipToNavigation

i-Series Temperature, Process and Strain Controllers


Item# CNI833

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $327.36
10-24 $310.99
25-49 $294.62
50-99 $278.26
100-499 $261.89
500+ $245.52

In stock

Lead Time ( If not in Stock): 2 weeks

i-Series Temperature, Process and Strain Controllers CNI833 CNI833
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • LOCAL, getAggregateRating, 1ms
  • bvseo-msg: The resource to the URL or file is currently unavailable.;
  • Universal Inputs
  • High Accuracy: 0.5°C (±0.9°F), 0.03% Reading
  • Totally Programmable Color Displays (Visual Alarms)
  • User-Friendly, Simple to Configure
  • Free Software
  • Full Autotune PID Control
  • Embedded Ethernet Connectivity Optional
  • RS232 and RS485 Serial Communications Optional
  • Built-In Excitation
  • 2 Outputs: Control/Alarm or Retransmission of Process Value
  • Output 3: Isolated Analog Voltage and Current Optional
  • NEMA 4 (IP65) Front Bezel
  • Temperature Stability: ±0.04°C/°C RTD and ±0.05°C/°C Thermocouple @ 25°C (77°F)
  • Front Removable and Plug Connectors
  • AC or DC Powered Units
  • Ratiometric Mode for Strain Gages
  • Programmable Digital Filter
  • UL and cUL Certified
  • Compatible with Omega Enterprise Gateway

Edit Options

View all models

Not all combinations are valid. Options compatible with previous selections will be in bold.

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

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

i-Series Temperature, Process and Strain Controllers

  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • LOCAL, getReviews, 0ms
  • bvseo-msg: The resource to the URL or file is currently unavailable.;

Your manual does a good job of explaining how the proportional factor relates to the output level, but not the reset time or rate time. Could you elaborate? Does making those factors larger make it more or less sensitive to I and D portions of error?

Asked by: C in Pittsburgh
Thank you for the inquiry. Please forward this request to temp@omega.com so that we can review PID settings with you. Best regards OMEGA
Answered by: AENwlk
Date published: 2020-07-16

I am successfully reading and changing settings on a CNi 1644 over RS232. I am using PID output. I would like to read what the output is. If it is turning on relays 75% of the time, I'd like to read a 75 somewhere.

Asked by: C in Pittsburgh
Thank you for your inquiry. Please contact our Temperature Team to discuss or email us at temp@omega.com
Answered by: Application Engineer JB
Date published: 2020-07-10

I have purchased 6 of these meters (CNI*33-EIT) and have them ready to be programmed. Reading all of the service information leaves me a little confused on how to actually program them with my laptop, Do I use a rs485 to rs232 adaptor or rs485

Asked by: catman
Hi Catman, This model has ethernet output only. You can connect to PC via ethernet. Best regards OMEGA
Answered by: AENorwalk
Date published: 2020-03-17

Thanks. I tried your link, but M3397 does not exist on the page, nor does M339. I was at https://www.omega.com/en-us/pdf-manuals. The letters "comm" appear four times, none of which were the right manual. Could you make sure it's available externally?

Asked by: C in Pittsburgh
Hi C in Pittsburgh, Please try the following; https://assets.omega.com/manuals/M3397.pdf Best regards OMEGA
Answered by: AENorwalk
Date published: 2020-07-08

I have a CNi1644-C24 and want to control it from a computer. I can access the communications menus on the controller. The user manual refers me to the Serial Communications Reference Manual, but I cannot find it on your website.

Asked by: C in Pittsburgh
If you click the link under the manuals tab on this page, it downloads a zip file. M3397 is in that zip file.
Answered by: Kimmyb
Date published: 2020-03-16

What is the current resolution (mA) for the DPi32?

Asked by: bochia
The ma resolution would depend on the maximum current being measured. If you were to measure up to 999.9 ma you would have 0.1 resolution and if measuring up to 99.99 ma 0.01 would be your resolution.
Answered by: ANBENG
Date published: 2019-12-05

The menu to have the alarm come on at startup is not showing up. Only the locations for putting in the High and Low temp alarm limits. Have it set at Dev and Band. Everything else working fine except I want the alarm not coming on right away at powerup.

Asked by: Bergie
A.P.oN should always be available. Please try disabling and then re-enabling the alarm sub menu.
Answered by: tempeng
Date published: 2019-09-06

What wire size range should be used for the input connections? I looked but cannot find it anywhere in your documentation.

Asked by: Mark Roberson
The 8 pin connector (for power and outputs) can have a wire size from 22 to 12 gage. The 10 pin connector (for inputs) can have a wire size from 28 to 16 gage. Thanks for connecting with Omega!
Answered by: Jane
Date published: 2019-04-30
  • y_2020, m_10, d_21, h_16CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.12
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_8
  • loc_en_US, sid_CNI833, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_omega
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • LOCAL, getContent, 4ms
Microprocessor-based Controller Self container Temperature controller
1 In Stock

Save Configuration