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Rugged J,K,T, E Thermocouple Calibrator and Thermometer

Temperature Calibrator and Thermometer
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Item# CL3512A

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 C$418.88
5-9 C$397.94
10-24 C$389.56
25-49 C$372.80
50-99 C$364.43
100+ C$356.05

In stock

Lead Time (If not in stock): 12 weeks
Temperature Calibrator and Thermometer CL3512A CL3512A
  • 8-Point, NIST-Traceable Calibration Certificate
  • Large 31/2 Digit Display
  • Type J/K/T/E TC Calibrator and Thermometer
  • Range -220 to 1372°C (-364 to 1999°F)

CL3512A Model Options

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Type of Thermocouple Signals
Type of RTD signal
Type of Thermistor Signal
Accuracy Value
Communications Protocol
Battery Run Time
Additional Features

The OMEGA™ CL3512A handheld calibrator is two meters in one at an attractive low price. The CL3512A is a temperature calibrator, or thermocouple calibrator, that simulates type J/K/T/E thermocouple signals. Each signal is adjustable by using the coarse and fine dials. The CL3512A can also be used as a dual type J/K/T/E input thermocouple thermometer. Features include a large 3 1/2 digit display with backlighting and display selections of HOLD, °C/°F, and 0.1°/1°.

Thermocouple Type:
Temperature Range: Celsius or Fahrenheit User
Selectable Measurement Ranges: K-Type -200 to 1372°C (-328 to 1999°F), J-Type -210 to 1200°C (-346 to 1999°F), T-Type -200 to 400°C (-328 to 752°F), E-Type -220 to 1000°C (-364 to 1832°F)
Calibration Range: Same as measurement range Auto Range: 0.1° to 1° resolution above 199.9 (°C or °F)
Measurement Accuracy: Accuracy is specified for operating temperatures over the range of 18 to 28°C (64 to 82°F), for 1 year, not including thermocouple error. ±(0.1%rdg + 1°C) range -60 to 1372°C ±(0.1%rdg + 2°C) range -60 to -220°C ±(0.1%rdg + 2°F) range -76 to 1999°F ±(0.1%rdg + 4°F) range -76 to -364°F
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Rated 5 out of 5 by from Nice calibrator for thermocouples This is the second one we bought and we are very happy with the performance. Two inputs and two outputs - for this price - can't go wrong.
Date published: 2016-05-06
Rated 5 out of 5 by from A ‘must have’ instrument Omega Thermocouple meter / simulator The ability to measure temperature with a thermocouple and to generate a simulated thermocouple voltage according to a selected temperature, is extremely valuable when debugging thermocouple applications. This model instrument does so at reasonable cost and with NIST traceable calibration certificate. PROs: 1. 0.1 degree Celsius display resolution up to 200 C. 2. Simulated TC output is variable with Coarse and Fine adjustment controls on the front panel. 3. Battery life is excellent. 4. Legendary Omega precision and reliability. CONs: 1. Simulator output range selections overlap. For example, 150C is selectable from 2 different simulator output ranges, both of which require the adjust pots to be near the end of their travel. This makes the adjustment more touchy for certain simulator output temperature settings. This is a very minor issue but a noteworthy characteristic. Overall this is a ‘must have’ instrument for anyone working with thermocouples in applications ranging from field installations to electronics development labs.
Date published: 2023-06-24
Rated 5 out of 5 by from Thermocouple Meter Great device and simple operation!!!!!!!!!!!!!!!!!!!!!
Date published: 2023-04-10
Rated 5 out of 5 by from Calibrator Purchase Great Service with this company in ordering our parts
Date published: 2022-10-10
Rated 5 out of 5 by from Just what I was looking for! These little units are very easy to use. For output, the dial allows you to select ranges of output, then simply fine tune the setting with the small dials. Outputs are stable and do not wonder. It also reads T/C with easy, both J and K types. I'm using it as a development similar in my lab. I wish it had a digital interface (serial, USB, etc) to make it easier to collect data. But for the price, I can't complain!
Date published: 2022-04-04
Rated 5 out of 5 by from Works fine, good value Very handy instrument, easy to use for checking out connections and other equipment. Very good specs for the price. We have several of these and they have held up well.
Date published: 2016-10-04
Rated 4 out of 5 by from Omega CL3512A I purchased for our regular calibration testing and we are happy to use the same
Date published: 2016-08-31
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How quick does the temp register on the display?

Asked by: Stacy
Hi Stacy, Thank you for the inquiry. Reading rate is once / second this meter. So within 2 seconds the unit should have steady value for stable input signal. Best regards, OMEGA
Answered by: NorwalkAE_RS
Date published: 2022-12-16

Can you tell me the county of organ

Asked by: Jimmy10
Thank you for your inquiry. Please email your request to
Answered by: Application Engineer JB
Date published: 2021-08-26

I am looking for an instrument that let me probe thermocouples type J, we use this in cure ovens and we would like to know if the thermocouple is still reliable or not in order to keep or replace it, could you recommend me an instrument for it

Asked by: Francisco2669
Hi Francisco, This calibrator can be used to verify a J thermocouple output if you have a stable bath at a known temperature. For more assistance with your thermocouples please forward request to TEMP@DWYEROMEGA.COM. Best regards Omega
Answered by: NorwalkAE_RS
Date published: 2024-03-18

How quick of a reading response can I expect going from room temperature to -85C? I'm trying to capture cooling cycle that cools down from room temp to -85C in about 4-5 seconds, and so I'm curious to now if this gauge can capture that

Asked by: Vass
Hi Vass, Update rate is 1/sec which is common with hand held meters. HH911T has 3/sec update. But most of response time will be due to the probe. Recommend to contact us at TEMP@OMEGA.COM for more details. Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2023-08-07

Can either T1 or T2 be used as an output for simulating a thermocouple to calibrate a device?

Asked by: GoWings
Only T1 is used for sourcing Thermocouple signals on the CL3512A calibrator.
Answered by: ANB ENG
Date published: 2022-11-03

How do I turn off the "Beep" sounds when buttons are pressed on the Omega CL3512A digital thermometer?

Asked by: Jack 713
Hi Jack713, Thank you for the inquiry. Please forward this request to TEMP@OMEGA.COM Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2022-01-31

How do you calibrate this?

Asked by: Jodi
Hi Jodi, Thank you for the inquiry. Please email request for calibration procedure to TEMP@OMEGA.COM. Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2023-08-07

Could this be used to calibrate a TJ96-IC310SS-116U-4-SB (WNW0204216) Thermocouple that I purchased from you recently. I did not have the thermocouple calibrated, but I am realizing that to match our our probe readings it is necessary?

Asked by: NIckB
Hi NickB, Thank you for the inquiry. To compare the 2 probes you need a good accurate meter to measure the probe output signal. The CL3512A can do this. You also need a stable bath to hold the probes at constant temperature. A container of ice can provide 0 C point. Hot water bath or block calibrator can provide higher level comparison points; Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2021-05-11
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J cable (retractable with 2 SMP-M)
0 In Stock
Retractable Sensor Cables for Thermocouples, RTDs and Thermistors
2 In Stock
Retractable Sensor Cables for Thermocouples, RTDs and Thermistors
3 In Stock
K cable (spare)(retractable with 2 SMP-M)
0 In Stock
Surface probe, up to 815°C (1500°F)
0 In Stock
Type K thermocouple—grounded element for air or liquids
0 In Stock
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