ASTM E644-04 - 1.5.2004
 
1. Scope

1.1 These test methods cover the principles, apparatus, and procedures for calibration and testing of industrial resistance thermometers.

1.2 These test methods cover the tests for insulation resistance, calibration, immersion error, pressure effects, thermal response time, vibration effect, mechanical shock, self-heating effect, stability, thermoelectric effect, humidity, thermal hysteresis and thermal shock.

1.3 These test methods are not necessarily intended for, recommended to be performed on, or appropriate for every type of thermometer. The expected repeatability and reproducibility of the results are tabulated in Appendix X4.

1.4 These test methods, when specified in a procurement document, shall govern the method of testing the resistance thermometer.

1.5 Thermometer performance specifications, acceptance limits, and sampling methods are not covered in these test methods; they should be specified separately in the procurement document.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in 6.3.2, 6.3.5, and 8.1.

 
2. Referenced Documents

E230-03

Standard Specification and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples

MIL-STD-202

Test Methods for Electronic and Electrical Component Parts

E1502-22

Standard Guide for Use of Fixed-Point Cells for Reference Temperatures

E1750-23

Standard Guide for Use of Water Triple Point Cells

E344-23

Terminology Relating to Thermometry and Hydrometry

E1-14(2020)

Standard Specification for ASTM Liquid-in-Glass Thermometers

E77-14(2021)

Standard Test Method for Inspection and Verification of Thermometers

E1751-00

Standard Guide for Temperature Electromotive Force (emf) Tables for Non-Letter Designated Thermocouple Combinations (Withdrawn 2009)

E1137/E1137M-08(2020)

Standard Specification for Industrial Platinum Resistance Thermometers

E2251-14(2021)

Standard Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids

E563-22

Standard Practice for Preparation and Use of an Ice-Point Bath as a Reference Temperature