Temperature Calibrators & Services

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.

Furnace calibration involves two processes: a system accuracy test (SAT), which measures total error in the temperature control loop, and a temperature uniformity survey (TUS), where calibrated thermocouples are placed at defined positions throughout the chamber to verify heat distribution.

Heating element ageing, sensor drift and calibration error occur throughout time and if you do not have a regular thermal survey and SAT verification performed at some point in time, these errors compound becoming a serious safety issue for the operation of the furnace. Regular furnace calibration prevents out-of-spec processing, product rejections, and non-conformances during audits.

Under AMS 2750H/CQI-9, a temperature uniformity survey is typically required quarterly or semi-annually depending on furnace class, while a system accuracy test is required monthly. Frequency also depends on furnace usage intensity and the applicable customer or process standard.

The primary standard is AMS 2750H. Furnaces are classified into Class 1 through Class 6 under AMS 2750H, each with defined temperature uniformity tolerances. Tempsens furnace calibration service supports compliance across all these frameworks.

The thermal profile encompasses all the temperatures associated with a given product/process as it travels through the heating system. The thermal profile also graphically represents the time-temperature relationship, which is essential for validating/optimising the heating process, using Tempsens thermal profiling equipment.

In a Tempsens thermal profiling system, a thermograph records data about the temperature continuously and at the same time from multiple thermocouple sensors. The records of temperature with timestamps are stored in the memory of the SmarTrack 10 Data Logger. The temperature data is then analyzed and used to create a thermal profile.

In a Tempsens thermal profiling system, thermocouples generate a voltage that is proportional to the difference in temperature between their measurement junction and the reference junction. The SmarTrack 10 data logger uses this voltage to accurately convert it into a measured temperature with a resolution of 0.1°C within the specified measurement capacity of the thermocouple.

You should insert the reference probe and the test sensor into the wells of your calibrator, input your target temperature, give it time to settle/stabilize and then take your readings to compare and calculate your adjustments.

In a dry block calibration device, the metal blocks are heated or cooled to very precise temperatures that can give a thermally stable reference temperature for direct contact sensor calibration without the use of a liquid medium.

Portable dry block calibrator systems can calibrate temperature sensors, switches, and transmitters in a variety of industrial applications where accurate and traceable temperature measurement verification is required.

Absolutely. Every calibrator is supplied with NABL traceable certificates and optional ISO 17025.

Yes. Tempsens offers dry blocks starting from –180°C to high-temp ranges upto 1700°C.

Yes, Tempsens the dry block temperature calibrator PDF is available for every model.

It depends on usage, but most industries recalibrate their sensors annually or semi-annually.

Liquid bath calibrators provide better performance with high accuracy, particularly in laboratories and QA systems.

Silicone oils or alcohols based on the temperature range — we include recommendations and compatible fluids with each unit. 

RTDs, and thermocouples can be calibrated in the liquid bath temperature calibrator.

The blackbody principle describes an idealized object that absorbs all incoming electromagnetic radiation and emits thermal radiation with respect to the temperature of the object while conforming to Planck's radiation law.

Tempsens provides benchtop and portable liquid bath calibrator models with applications in the field and lab.

• Black body calibration is the comparison of the device to NIST traceable references using accurate temperature sensors and following established metrology practices.

• Detection of black body radiation uses calibrated infrared sensors, thermal imagers, or pyrometers that measure the fundamental electromagnetic spectrum of the heat coming from the heated cavity.

Constant agitation, profound immersion, and thermal equilibrium guarantee consistent and stable temperature areas for accurate calibration.

• A black body is used to measure and calibrate non-contact temperature devices, including pyrometers, thermal imagers, and IR thermometers by providing a uniform radiation source.