Typically, a temperature calibrator is a portable device that can simulate temperature sensors.
It is a device that generates temperature as a reference point with a known level of certainty or accuracy that is compared to temperature readings from a temperature-measuring device, such as a thermometer or transmitter, of unknown or suspect accuracy.
Temperature calibration standards
The temperature calibration can be accomplished in various ways and with various degrees of accuracy. As with any calibration, a standard must be used.
Standards used in temperature calibration can come in different forms but must be certified to an accuracy that is traceable to a national standard.
In industrial applications, temperature calibration typically involves thermistors, thermocouples, or platinum resistance thermometers (PRTs), also called resistance temperature devices (RTDs).
These are devices that are used to accurately measure temperature. Readings from these devices can be compared to less accurate field temperature sensors and used to assess the feasibility of those devices or to perform temperature calibration.
Temperature calibration procedure
A temperature gauge can mean different things to different people. Often a person’s application changes how they would define a temperature gauge.
When some people think of a temperature calibrator, they think of a handheld device that electronically simulates temperature sensors as if they are at a reference temperature.
Regardless of the different ways people think of a temperature calibrator, the principle is the same: a temperature calibrator is an instrument used to determine whether a temperature device is performing within specified limits of uncertainty or accuracy.
Temperature sensor calibration procedure
Temperature calibration typically consists of an “as found” check to ensure that the temperature probe is within calibration tolerances.
If a probe is found to be out of tolerance, it is usually replaced with a new probe that is within tolerance.
Alternatively, compensations to correct the out-of-tolerance condition can be made directly at the electronic transmitter connected to the temperature sensor.
The cost of the temperature probe versus the cost of tuning the transmitter must be considered to determine the most feasible method. In any case, the temperature calibration must be performed in the specified range of the sensor or its application range.
Temperature Calibration Equipment
You can find temperature calibrators built specifically for industrial process environments.
How to calibrate a digital thermometer?
A digital thermometer should always return accurate readings. Whether you use it for measuring body temperature, atmospheric temperature, or any other relevant use.
NIST Thermometer Calibration
Temperature is a critical measurement for ensuring the safety and quality of many food products. There are a variety of commercial temperature monitoring devices available.
Infrared Thermometer Calibration
Regular thermometer calibration ensures that your device is operating at its highest possible level of accuracy.