Temperature Calibration: RTDs, Thermocouples, Transmitters & Thermometers
Multi-point, NIST-traceable temperature calibration in °F or °C for the sensors and instruments that keep your process in spec.
Temperature calibration you can document
CML Enterprises provides temperature calibration services and certification for a wide variety of temperature instruments. Using high-accuracy, all-in-one Beamex MC6 calibration equipment, we provide certification traceable to national and international measurement standards (NIST). We understand how directly temperature accuracy drives product quality, food safety, energy cost and process control.
For every temperature instrument received in our shop, we perform inspections, initial tests and a full multi-point calibration. With extensive knowledge of temperature instruments, we can also repair — or recommend a solution for — instruments that no longer meet the necessary standards.
Temperature instruments we calibrate
Sensors
- RTDs
- Thermocouples
Transmitters
- Temperature transmitters
- RTD transmitters
- HART / Fieldbus smart transmitters
Indicators & switches
- Thermometers, including bimetal
- Temperature gauges
- Temperature switches (set-point testing)
Published temperature accuracy
We can calibrate in either Fahrenheit or Celsius. Accuracy and ranges as published by CML:
| Range | Published accuracy |
|---|---|
| Temperature instruments: −25 °C to 660 °C (−13 °F to 1112 °F) | ±0.01 °C |
| Temperature transmitters: −50 °C to 350 °C (−58 °F to 662 °F) | ±0.01 °C |
Calibration test points
- 3-point up & down procedure
- 5-point up & down procedure
- Custom-point up & down procedure
In the shop or on your line
Ship RTDs, thermocouples and thermometers to CML, or have our technicians calibrate installed temperature loops — sensors, transmitters and chart recorders — during an on-site field service visit. Pressure and temperature data logging is also available in the field.
Reference material
Useful downloads for temperature work: Thermocouple Reference Guide (PDF, 101 KB) and the Beamex white paper Total uncertainty of temperature calibration (PDF, 427 KB).
Need sensors or thermowells?
CML also supplies thermocouples, RTDs, thermowells, thermometers and temperature switches. See instrumentation.
Records that flag drift early
Each temperature instrument is stored in our Beamex CMX database so we can track performance year over year and warn you when an instrument is approaching repair or replacement. See how CMX records work.
Trusted for pressure and temperature certification
“I have dealt with CML Enterprises for many years, and they are my most trusted suppliers of pressure and temperature calibration and certification. We have never had a problem with their work. I have known the Lefley family for over 50 years.”
“Over all, I just want to say that Bob and Bobby are excellent people. They really know how to represent CML Enterprises. I highly recommend their calibration services, they are flexible and very reliable. They work hard and they will do anything they can, to get those instruments up and running. Great job I will look forward to work with you next year. Thank you.”
“CML Enterprises performed calibration services of differential pressure transmitters for critical systems used for protection of both personnel and equipment. They did the work during tight time frame of the facility that operates 24/7 with impressive efficiency and knowledge. We are very satisfied with CML performance and plan to continue using their services.”
Calibrate your temperature instruments
RTDs, thermocouples, transmitters, thermometers and switches. In-house or on-site.