ABOUT
Pyrometer Calibration
Introduction
When industrial processes demand accurate non-contact temperature measurement, even minor instrument drift can compromise product quality and process safety. Tempsens pyrometer calibration services eliminate that risk covering a measurement range of -40°C to 3000°C through our NABL-accredited in-house laboratory, with full traceability to national and international standards. For facilities where removing instrumentation is impractical, our trained engineers deliver on-site infrared pyrometer calibration from -15°C to 1200°C directly at your plant with no downtime, no reinstallation cost, and no disruption to operations. From steel and glass to petrochemical and power sectors, Tempsens is the calibration partner industries rely on for measurement certainty.
About Pyrometer Calibration
Importance of Pyrometer Calibration
Infrared pyrometer calibration is extremely important for maintaining the integrity of processes in high-temperature industrial environments. If a pyrometer is not calibrated correctly, it can drift several degrees from the calibrated temperature and cause defective products, wasted energy, or potentially unsafe conditions. Calibrating instruments with traceable standards will enable your instruments to provide consistent, accurate measurements and allow your operations to meet the requirements of various quality management systems (such as ISO 9001) and industry-specific requirements. A structured calibration service can also extend the life of an instrument and minimize the chances of incurring costly process failures.
Tools and Equipment for Pyrometer Calibration
- High stable blackbody radiation sources (high-stability cavity and flat plate sources) from -40°C to 3000 °C.
- NABL traceable transfer standard reference pyrometers with low calibration uncertainty, as low as 2.7°C for the -40°C to 0 °C range.
- Optical test bench and alignment hardware to accurately control target spacing and spot size.
- Data acquisition and logging devices for the purpose of recording calibration results as well as generating the calibration certificate.
- On site portable blackbody sources for field calibration up to 1200 °C without removing the instrument from the field.
If you want to know the process of Pyrometer Calibration you can refer to our blog – “Procedure for Pyrometer Calibration“
Types of Pyrometer for Which We Provide Calibration Service
| Quality Measured/ Instruments | Temperature Range | Calibration & Measurement Capability |
| In House Facility | -40ºC to 0ºC | 2.7ºC |
| -15ºC to 250ºC | 2.16ºC | |
| 250ºC to 400ºC | 2.44ºC | |
| 400ºC to 1200ºC | 3.5ºC | |
| 500ºC to 1700ºC | 3.74ºC | |
| 1700ºC to 3000ºC | 7.08ºC | |
| On Site Facility | –15ºC to 250 ºC | 2.16ºC |
| 250 ºC to 400 ºC | 2.44ºC | |
| 400 ºC to 1200 ºC | 3.5ºC |
Why Tempsens for Pyrometer Calibration?
- Calibration traceable to national and international standards at an NABL accredited laboratory that is recognized in all regulated industries.
- Trained engineers will come to your site to carry out calibration and reduce time and expense related to removal/reinstallation.
- 35+ years experience in thermal measurement with industry exposure through our services to over 75 countries.
- Comprehensive documentation and audit-ready calibration certificates for every instrument are provided for all calibration work performed.
FAQ
Frequently Asked Questions
Find answers to frequently asked questions related to Pyrometer Calibration.
Pyrometer calibration is performed against pyrometer calibration standard traceable to ITS-90 (International Temperature Scale of 1990), using NABL-accredited blackbody sources. Tempsens follows calibration procedures aligned with ISO/IEC 17025 laboratory accreditation requirements.
Most industrial applications require pyrometer calibration at least once per year. High-criticality processes such as steel casting, glass melting, or pharmaceutical manufacturing may require calibration every 3–6 months or after any significant process change, instrument repair, or impact event.
Pyrometer calibration standard refer to the reference traceable sources and measurement protocols used to verify instrument accuracy. These include blackbody radiation sources calibrated against national measurement institutes (NMIs), transfer standard pyrometers, and documented uncertainty budgets all aligned with ITS-90 and ISO/IEC 17025 requirements.
