• Clause 6.2.1 Measurement Standards:Standard thermometer (one of the measurement standards)

• Clause 6.2.2 Other Equipment:Dry block calibrator or thermostatic bath (horizontal temperature difference ≤ 0.1 °C, maximum temperature difference ≤ 0.2 °C)

• Clause 7.2.2 Calibration Point Selection — Temperature Indication Error:At least 4 calibration points, including -40 °C, 0 °C, 25 °C and 100 °C

• Clause 7.2.18 Calibration Method for Temperature Indication Error:A multifunction temperature process calibrator shall be selected as the standard for calibrating temperature secondary instruments; a portable intelligent dry block calibrator shall be selected as the standard for calibrating temperature sensors.

Key Specifications of Recommended Standards

Portable Intelligent Dry Block Calibrator (Portable Precision Liquid Thermostatic Bath)

• Temperature range:(-40 ~ 100) °C

• Specification requirement:Horizontal temperature difference ≤ 0.1 °C, maximum temperature difference ≤ 0.2 °C

• Jiangjing Technology specification:Horizontal temperature difference ≤ 0.05 °C, maximum temperature difference ≤ 0.1 °C

High-Accuracy Digital Thermometer

• Measurement range:(-40 ~ 100) °C

• Measurement accuracy:≤ ±0.05 °C

• High-precision platinum RTD sensor

• Resolution:0.001 °C

Multifunction Temperature Process Calibrator

• Accuracy class:0.05%

• Supports measurement and output of multiple parameters including current, voltage, resistance, frequency, thermocouple and RTD — a thermal secondary instrument calibration device