This standard is applicable to industrial platinum thermistors (hereinafter referred to as "platinum thermistors") in the entire or partial temperature range of -200 ℃ to++850 ℃. 2. The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. At the time of publication of this standard, all versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB 2423.3-93 Basic Environmental Testing Procedures for Electrical and Electronic Products - Test Ca: Constant Damp Heat Test Method GB 3836.2-83 Explosion proof Electrical Equipment for Explosive Atmospheres - Explosion proof Electrical Equipment "d" GB4451-84 Vibration (Sine) Test Method for Industrial Automation Instruments ZB Y002-81 Transportation of Instruments and Meters Basic Environmental Conditions and Test Methods for Transportation and Storage 3.1 Definition 3.1 Platinum Resistance Thermometer Sensor is a temperature detector composed of a temperature sensing element made of platinum as a temperature sensing material, an inner lead, and a protective tube. It usually also has components connected to external measurement and control devices and mechanical devices. 3.1.1 Temperature sensing resistor is a resistor used to sense temperature in platinum thermistors. 3.1.2 Internal leads are the internal leads that platinum thermistors have when they leave the factory. Their function is to enable the temperature sensing element to be connected to external measuring and digging devices. The inner lead is usually located inside the protective tube. 3.1.3 Protective tube is a tubular object used to protect temperature sensing components - inner lead components from harmful environmental effects. There are two types of protective tubes: detachable and non detachable. 3.2 Calibration characteristics The resistance temperature relationship of platinum thermistors specified in this standard. 3.2.1 Graduation Table The graduation characteristics of platinum thermistors expressed in table form in the reference table. 3.2.2 Tolerance The actual resistance temperature relationship of platinum thermistors deviates from the allowable range of graduation density. 3.2.3 Temperature points for verification: The constant test temperature selected to verify whether the platinum thermistor meets the tolerance requirements
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