Temperature calibrator is a device used to control and correct the values measured by temperature measuring equipment.
Temperature calibrators with the help of thermocouple or RTD temperature sensors allow us to compare the actual temperature with the values measured with high accuracy.
A very important feature of temperature calibrators is the accuracy of their measurement and one of the main factors determining the price of temperature calibrators.
One of the most important points in using measuring devices is calibrating them.
The measuring devices will fail after a period of time, which may occur due to physical factors such as damage or improper use of the operator in unusual conditions, etc. At this stage, to calibrate the device, a reference device must be used to determine the error rate. It is standardized.
In places where temperature is measured, controlled and displayed, tools such as sensors (thermocouples), indicators (panel meters), process controllers, table recorders and data recorders are used.
These instruments must be checked and adjusted periodically, so the use of temperature calibrators to calibrate and adjust the temperature measuring instruments is necessary.
Multifunction calibrators, which can measure current, voltage and temperature signals and are multi-functional, can also be used to calibrate devices.
Also, some temperature calibrators are dual-purpose and are used as thermometers.
Application of temperature calibrators
- Calibration and indexing of measuring equipment and recorders
- Determining the accuracy of the device in accordance with the correct design and monitoring specifications
- The portable temperature calibrator is used in the laboratory and is used to calibrate thermometers.
Important parameters in choosing a temperature calibrator
1- Type of input sensor
2- Number of inputs
3- Accuracy of measurement
4- Measurement interval for testing
5- Types of measurement units
6- Resolution of the device
7- Portability of the device
8- Ability to report and connect to a computer
Classification of temperature calibration devices
Field Temperature Calibration ( Portable or Industrial Temperature Calibration )
Used for thermometers that are tested outside the laboratory, usually with an accuracy range of 5 to 0.5 degrees Celsius.
Secondary or laboratory temperature calibration
Used to calibrate equipment such as PT-100 or PRT, precision thermistors and noble-metal thermocouples.
These systems have an accuracy between 0.5 to 0.02 degrees Celsius.
Temperature calibration fixed point or Primar y
These systems are used for calibration of SPRTs and nobel-metal thermocouples and have an accuracy of 0.001 ° C.