Calibration steps of the infrared thermometer
In the production process, infrared temperature measurement technology plays an important role in product quality control and monitoring, equipment online troubleshooting, safety and security, energy saving. In the past 20 years, non-contact infrared thermometer development is rapid, perfect performance, increasing functionality, increasing variety, and expanding the scope of application. Compared with the contact temperature measurement method, infrared temperature measurement has the advantages of fast response time, non-contact, safe to use, long service life. Non-contact infrared thermometer by three series of portable, online scanning, a variety of options and computer software, each with a variety of models and specifications. Among the various specifications of thermometers, it is very important for users to choose the right infrared thermometer.
The steps for calibrating an infrared thermometer are as follows:
According to the temperature measurement range, place a specimen of metal material with a diameter larger than the diameter of the desired infrared pyrometer in the resistance furnace. Test the standard type S precious metal thermocouple described above, using the thermocouple as the reference temperature source. To ensure that the temperature source is relatively stable, the expansion uncertainty of the reference calibration temperature source should not exceed Table.
Calibration method: calibration environmental conditions, ambient temperature (18 ~ 25) C reference standard, electrical measuring device working environment humidity should be consistent with its.
Requirements for technical conditions are needed.
Relative humidity: > 85%, avoid strong background radiation and alternating magnetic fields.
Supporting facilities: S-type thermocouples and their measuring point equipment of the standard temperature source (converted to temperature) accuracy should be better than 1/10 of the maximum permissible error of infrared measuring instrument.
An insulation resistance meter rated at 520V is calibrated.
The digital display must be clear and complete with normal buttons. When the power is low, the battery can be calibrated after replacing the battery.
Calibration results processing: calibration data processing based on the implementation of the full radiation thermometer calibration procedures, the calibration process is burned on the infrared thermometer calibration record sheet, the end of the calibration to fill out the calibration report.
The calibration interval is generally not more than 1 year.
