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CNI-Series
1/32, 1/16, and 1/8 DIN Universal Input High Accuracy Controllers
Models In Stock
- Universal inputs handle thermocouples, RTDs, strain gages, voltage, and current
- Optional Ethernet or serial connectivity for remote monitoring and integration
- Programmable color display with visual alarms for easy monitoring
- Accuracy at 25°C: ± 0.5°C temp nominal 0.03% rdg ± 0.03% range process and strain
CNI-Series
From
$
416.00
Models In Stock
Product Overview
- A/D Conversion Dual Slope
- Analog Current 0 to 20 mA (500 Ω maximum)
- CMRR 120 dB
- Cold Junction Compensation 50 ppm/°C
- Control Characteristics Control Action: Reverse (heat) or direct (cool) Rate: 0 to 399.9 s Reset: 0 to 3999 s Cycle Time: 1 to 199 s; set to 0 for on/off Gain: 0.5 to 100% of span; setpoints 1 or 2 Damping: 0000 to 0008 Soak: 00.00 to 99.59 (HH:MM), or OFF
- Decimal Selection 0,001, 0,01, 0,1, None
- Digital Filter Programmable
- Display Size 46 mm (1.8 in)
- Display Type Note 4-digit 9-segment LED 10.2 mm (0.40"); i32, i16, i16D, i8DV 21 mm (0.83"); i8 10.2 mm (0.40") and 21 mm (0.83"); i8DH RED, GREEN, and AMBER programmable colors for process variable, setpoint and temperature units
- Electrical Connection Screw Terminal
- Impedance Input 10 MΩ for 100 mV; 1 MΩ for 1V or 10 Vdc
- Input Configuration Single-ended
- Isolated Analog Voltage 0 to 10 Vdc (max 20 mA)
- Isolation Isolation Power to Input/Output: 2300 Vac per 1 minute test For Low Voltage Power Option: 1500 Vac per 1 minute test Power to Relay/SSR Output: 2300 Vac per 1 minute test Relay/SSR to Relay/SSR Output: 2300 Vac per 1 minute test RS232/485 to Input/Output: 500 Vac per 1 minute test
- Current, Max 0 to 20 mA (5 Ω load)
- Measurement Type Current, Strain, Voltage
- NMRR 60 dB
- Number of Control Outputs 2
- Number of Inputs 1
- Offset Adjustment -1999 to 9999
- Polarity Unipolar
- Ramp Setpoint Ramp to Setpoint: 00.00 to 99.59 (HH:MM), or OFF
- Remote Setpoint None
- Sampling Rate 3 Hz (3 updates/second)
- Set Point Adjustment Menu Configurable
- Span Adjustment 0.001 to 9999 counts
- Step Response 0.7 sec for 99.9%
- Temperature Stability Temperature Stability: RTD: 0.04°C/°C; TC @ 25°C (77°F): 0.05°C/°C ; Cold Junction Compensation Process: 50 ppm/°C
- Thermocouple Lead Resistance, Max 100 Ω
- Tuning Autotune
*Move on up to our newest line of PID Controller, the CNPT Platinum Series controllers with Modbus connectivity, expanded ramp and soak programs, universal inputs, and simple PC programming.*
"The DwyerOmega CNI-Series offers a line of universal input, 1/32, 1/16, and 1/8 DIN high accuracy controllers designed to deliver precision, flexibility, and reliability across a wide range of temperature and process control applications. Built with multiple input types—thermocouples, RTDs, voltage, and current—these controllers provide consistent performance and stable readings even under changing environmental conditions.
Each controller in this series features excellent accuracy (± 0.03% of reading ± 0.03% of range), high common-mode and normal-mode rejection (CMRR/ NMRR), and tunable control options (PID, on/off, reverse or direct action), giving engineers the control they need to fine-tune system responses.
Visually, the CNI-Series includes bright, easy-to-read displays and intuitive color indicators for status or alarms, making system monitoring easier at a glance. Installation is streamlined thanks to standard DIN panel sizes, screw terminal wiring, and robust housing with front bezels built to handle industrial conditions.
Backed by the DwyerOmega brand, this high accuracy controller line is a dependable choice for process plants, automation systems, OEMs, and any environment where precision, durability, and user-friendly control are essential."
PDFs & Manuals
Software & Drivers
Accessories
accessories
Microprocessor-based Controller Self container Temperature controller
$1,169.44
0 In Stock
Show Ratings & Reviews
Rated 1 out of
5
by
George24 from
Very compicated setup
**Review of the CNi3253-DC Temperature Controller**
I recently purchased the CNi3253-DC temperature controller for use with geophysical equipment, but my experience has been far from satisfactory. The device itself has potential, but its functionality is severely hampered by a combination of a complicated setup process and inadequate documentation.
**Setup Challenges:**
From the outset, configuring the CNi3253-DC proved to be a frustrating endeavor. The setup process is far from intuitive, and despite following the manual as closely as possible, I encountered numerous hurdles. The menus are convoluted, and the instructions provided do not align well with the actual options available on the controller. This discrepancy between the manual and the device’s menu options is a major issue, making it difficult to configure the controller correctly. Also I was unable to find how to reset the controller to factory defaults.
**Documentation Issues:**
The manuals available for the CNi3253-DC are, frankly, disappointing. They are poorly written and lack essential details. Many of the menu options are either described inadequately or not mentioned at all. This oversight leaves users like myself guessing about the functionality of certain features and how to use them effectively. The lack of clear, comprehensive documentation significantly impairs the usability of the controller.
**Performance Concerns:**
Despite my efforts to get the controller working, I have yet to achieve satisfactory performance. The misalignment between the described functions and the actual options means that I cannot reliably control or monitor the temperature as needed for my geophysical equipment. This has led to operational delays and has compromised the effectiveness of my setup.
**Conclusion:**
Overall, the CNi3253-DC temperature controller falls short of expectations due to its complex setup process and inadequate documentation. If you’re considering this controller, be prepared for a steep learning curve and significant frustration. The potential of the device is overshadowed by its usability issues, and unless improvements are made to the user manual and interface, I would recommend exploring alternative options for temperature control in critical applications.
Date published: 2024-07-27
Rated 2 out of
5
by
Theman from
MORE BUTTONS LABELED
The unit needs more controls and they need to be labeled clearly in writing not stupid tiny symbols. Works good but it should not be so difficult to set up.
Date published: 2020-10-23
Rated 5 out of
5
by
Maiser Maarouf from
sales engineer
excellent service and very professional, i do recommended for other industries
Date published: 2024-11-30
Rated 5 out of
5
by
kmwomm from
omega 120/ 24 v process controllers
reliable meter that provides accurate readings. we've used for 20+ years and are extremely happy
Date published: 2024-10-23
Rated 3 out of
5
by
Scott M from
I wish returns were easier
The products work great and as expected. But we received one part that was the incorrect part; which is understandable, it happens, no big deal. But getting Omega to process a return and more importantly get us the correct part replaced was not as easy as we would have liked.
Date published: 2024-04-04
Rated 5 out of
5
by
Dano1 from
Great little meter
Great little meter and can handle years of dust and abuse!
Date published: 2023-08-30
Rated 5 out of
5
by
JT D from
CNi3244-C24 controller
Fantastic controller. Very long lasting. Purchased several more of these for our needs.
Date published: 2023-06-07
Rated 5 out of
5
by
Will Lindsay from
Good service
Provided the customer with what they needed at fair prices and with prompt service.
Date published: 2023-05-19
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.
If you click the link under the manuals tab on this page, it downloads a zip file. M3397 is in that zip file.
Date published: 2023-09-19
What is the current resolution (mA) for the DPi32?
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.
Date published: 2019-12-05
Where do I get firmware to upgrade a Cni16D53-C4EIT?
Hi GlenW,
Firmware would have to be updated at the factory. Last hardware update was several years ago.
Best regards
OMEGA
Date published: 2022-08-11
For controller CNI833-C24-DC, where I can get the terminal block (female connector) for the inputs?
Hi S Cruise
Thank you for the inquiry. For the 10 position input terminal block the part# is CNI-10PIN-CONN.
Best regards
OMEGA
Date published: 2022-05-07
Hello, Hello, I am using 4 of your cni8s with the rs232 port everything is working fine. on a device when I turn it on it writes M000.1 I have to press return to switch to run mode, do you know why? codially John
Self-Mode is Enabled now. Press UP or DOWN to display MXX.X. To disable Self, press ENTER and then press SCROLL. Display goes to the Run Mode. Self-Mode is Disabled now.
Date published: 2021-08-12
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.
A.P.oN should always be available. Please try disabling and then re-enabling the alarm sub menu.
Date published: 2019-09-06
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?
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
Date published: 2020-07-16
We have been using this controller to monitor the temperature of our water tank for many years and it has started to give us the wrong reading. Does this controller or the thermocouple in the tank tend to fail first? Or is it something else altogether?
Thank you for your inquiry. We believe the best assistance would come from speaking to us directly at 888-826-6342 ask for the Temperature Department Mon. – Fri. (HOURS 8:30AM - 5:30PM EST).
Date published: 2024-06-25