热处理测温仪表经长时间使用,由于环境的影响(高温、腐蚀性气体的侵蚀、振动、灰尘)、磨损及自然老化等,不可避免地会产生一定的误差,特别是使用在温度较高场合的检测仪表如热电偶、热电阻等,更易产生误差,为此必须对其进行定期维护校验和必要的调整。热处理用温度仪表的校验方法,一般分为两种:即仪表的成套校验与各仪表的单独检定。成套校验往往在现场进行,所以又称为现场成套校验。仪表的各自单独检定可按 Heat treatment temperature measuring instrument for a long time, due to environmental impact (high temperature, corrosive gas erosion, vibration, dust), wear and natural aging, will inevitably have some error, especially in the use of high temperature The detection instruments such as thermocouples, thermal resistance, etc., are more prone to error, for which it must be regularly maintained calibration and necessary adjustments. Thermal treatment with the temperature of the instrument calibration methods are generally divided into two types: the complete set of instruments and verification of the instrument’s separate test. Complete sets of checks are often carried out at the scene, it is also known as on-site set of checks. Instrument separate test can press