Calibration steps for infrared thermometer
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 complete performance, continuously enhanced functions, an increasing variety, and an expanding range of applications. Compared with contact temperature measurement methods, infrared temperature measurement has advantages such as fast response time, non-contact, safe use, and long service life. The non-contact infrared thermometer consists of three series of 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 of the infrared thermometer are as follows:
According to the temperature measurement range, place a metal material sample with a diameter greater than the required infrared thermometer diameter in the resistance furnace. Test the above-mentioned standard S-type precious metal thermocouple, using the thermocouple as the reference temperature source. To ensure the relative stability of the temperature source, the expansion uncertainty of the reference calibration temperature source should not exceed the table.
Calibration method: Calibrate the environmental conditions, reference the ambient temperature (18-25) C standard, and ensure that the humidity of the working environment of the electrical measuring device is consistent with it.
Requirements that require technical conditions.
Relative humidity:>85%, avoid strong background radiation and alternating magnetic fields.
Supporting facilities: The accuracy of the standard temperature source (converted to temperature) of the S-type thermocouple and its 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 was calibrated.
The digital display must be clear and complete, and the buttons must be normal. 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 total 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 generally does not exceed 1 year.
The above is the personal calibration process for the infrared thermometer.
