Infrared Thermometer Calibration Steps
In the production process, infrared temperature measurement technology plays an important role in product quality control and monitoring, equipment online fault diagnosis, safety protection, energy conservation, and other aspects. In the past 20 years, non-contact infrared thermometers have developed rapidly, with improved performance, continuously enhanced functions, increasing varieties, and expanding application ranges. Compared with contact temperature measurement methods, infrared temperature measurement has the advantages of fast response time, non-contact, safe use, and long service life. The non-contact infrared thermometer consists of three major series: portable, online scanning, multiple options, and computer software, each with multiple models and specifications. It is very important for users to choose the correct infrared thermometer among various specifications of thermometers.
The calibration steps for infrared thermometers are as follows:
According to the temperature measurement range, place a metal material sample with a diameter larger than the required infrared thermometer diameter in the resistance furnace. Test the standard S-type precious metal thermocouple mentioned above, using the thermocouple as the reference temperature source. To ensure the relative stability of the temperature source, the expansion uncertainty of the benchmark calibration temperature source should not exceed the table.
Calibration method: Calibrate the environmental conditions, with a reference standard of ambient temperature (18-25 ° C), and the working environment humidity of the electrical measuring device should be consistent with it.
Technical requirements are needed.
Relative humidity:>85%, avoid strong background radiation and alternating magnetic fields.
Supporting facilities: The accuracy of the standard temperature source (converted to temperature) for S-type thermocouples and their measuring point equipment should be better than 1/10 of the maximum allowable error of the infrared measuring instrument.
The insulation resistance meter with a rated voltage of 520V has been calibrated.
The digital display must be clear and complete, and the buttons must be functioning properly. When the battery is low, it can be calibrated after replacing the battery.
Calibration result processing: The calibration data processing is implemented based on the verification regulations for full radiation thermometers. The calibration process is recorded on the infrared thermometer calibration record form, and the calibration report is filled out after the calibration is completed.
The calibration interval is generally not more than 1 year.
