Temperature Calibration

Accreditation Number: 357

Thermometer Calibration & Other Temperature Calibration Services

A SANAS Accredited Temperature Calibration Company

We calibrate your temperature instruments referenced to high accuracy standards. We are well-versed in thermometer calibration and other temperature calibration techniques – all of which are carried out by trained and skilled professionals.

We’re accredited with the South African National Accreditation System (SANAS), which ensures that we’re held accountable and that we conform to the highest standards. Our accreditation extends to the following equipment:

  • Electrical Temperature Simulations
  • Thermometers
  • Ovens / Furnaces / Baths /Fridges
  • Temperature
  • Data Loggers
  • Autoclaves

Temperature Calibration

TriLab Support services the most reputable laboratories across South Africa, providing them with SANAS thermometer calibration and other temperature calibrations.

Error Is Not in Our Vocabulary

We are aware that the smallest unit of measurement makes all the difference and we strive to offer our customers the greatest value in obtaining the smallest Uncertainty of Measurement possible.

Onsite Calibration

Most of our calibrations are carried out onsite, saving you the hassle of transporting heavy or delicate equipment. Our calibration experts work with your deadlines and your convenience in mind.

SANAS Accredited

We’re accredited with the South African National Accreditation System (SANAS), which ensure that we’re held accountable and that we conform to the highest standards.
How We Calibrate Temperature:
A thermometer is a device which has a measurable property that changes with temperature. There are many different types of thermometers, with many different properties and each needs to be calibrated accordingly.
Liquid-in-glass thermometer:

The property measured is the length of the liquid column inside a glass tube.

Platinum resistance thermometer or a thermisto:

The property measured is the electrical resistance of a piece of ‘sensing’ material.


The property measured is the voltage generated along the wires making up the thermocouple.

Radiation thermometer:

The property measured is the current generated by a photodiode on to which the thermal radiation is focused.

Thermometer calibration:

We require the fixed calibration temperature/s in order for us to perform calibration. These are typically according to your working range/s it’s used at or specific high & low tolerances (e.g., 18, 25 & 30 °C) Please advise if you require batteries changed prior to calibration.

Temperature calibration:

This has many facets; it can be carried out thermally in the case of probes or electrically (simulated) in the case of instruments

Thermal (temperature) calibration:

This is achieved by elevating (or depressing) the temperature sensor to a known, controlled temperature and measuring the corresponding change in its associated electrical parameter (voltage or resistance) or a direct temperature comparison. The accurately measured parameter is compared with that of a certified reference probe; the absolute difference represents a calibration error – this is a comparison process. If the sensor is connected to a measuring instrument, the sensor and instrument combination can be effectively calibrated by this technique.

Liquid-in-glass thermometer:

This is used for digital temperature meters. An electrical signal, precisely generated to match that produced by the appropriate sensor, at various temperatures, is applied to the instrument which is then calibrated accordingly. The sensor is effectively simulated by this means. From the calibration simulators a wide range of outputs are available for this purpose; an electrical signal is generated automatically without the need for computation. However, this approach is not applicable to sensor calibration for which various thermal techniques are used. Calibration procedures/uncertainties can be applied to sensors and instruments separately or in combination.

Data loggers:

These are defined as battery operated recording devices that can be used to monitor environmental conditions (e.g., temperature and relative humidity) in the field or in environmentally controlled areas. Data is collected via probes and stored in the logger until it is downloaded to a PC using its supplied programme.


These instruments produce superheated steam under high pressure and are used to decontaminate and sterilise. Autoclaves need to be tested periodically to ensure effectiveness; internal tests typically include biological and chemical indicators and thermometers. These physical parameters include temperature, pressure, and time. The main objective of the autoclave validation would be to ensure the chamber provides a uniform sterilising environment – Comprehensive calibrations are carried out including temperature mapping (unloaded at 121°C), pressure calibration of the gauge (at 4 points) & timer (15 or 20min). Additional loaded cycles are available according to requirements/budget. All data will be documented on certificate.

Chambers (Oven/bath/furnace)

For this, we require the calibration temperature/s the unit is used at. We can offer 1, 3 or 9 mapping points (temperature sensors spread evenly throughout the chamber) and overall min & max temperature experienced in chamber during calibration. (More cost-effective options are available, however, the chamber size & uniformity should be taken into consideration). Note: If more than one temperature is required, we need the chamber to be set at the lowest temperature prior to Trilab arriving on-site. Adjustments can only be made at one temperature only.

Who We Service:

We service laboratories across South Africa and have experience in calibrating mass, temperature and weighing equipment onsite and offsite. We also have experience in calibrating production instrumentation.

Don’t want to waste time and money proceeding with work or experiments that cannot be trusted? Call in our calibration experts for professional advice and assistance.