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About Temperature Sensors-Your Free Guide to Temperature Sensors on the Web

STANDARDS FOR TEMPERATURE SENSORS

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There are numerous standards around the world and the goal of this part of the site is to eventually catalog most, if not all, of them. This is a start with links to many of the organizations involved, if they are on the Web. The ones we know the best are those published by ASTM and those standards that deal with radiation thermometers. We shall be searching the Web and the Net for more details. If you can add to this page, just email your information and we will include it as we are able to verify and edit the page.


  1. Temperature Scales
    The International Temperature Scale of 1990 (ITS-90) is the de facto standard used in the industrialized world by international convention. This page gives a bit more explanation of this plus previous scales and their relationships to each other.
  2. Standards Related to Temperature and Calibration in General
    Terminology, special calibration apparatus and related issues.
  3. Standards Related to Clinical Thermometers
    The standards for clinical thermometers are scattered around, at least within the ASTM Temperature Committee, because the committee is organized around sensor device types and not around sensor uses.
  4. Standards Related to Thermocouples
    The ASTM Standard E 230 for emf vs. temperature is an American National Standard for thermocouples. But there are many more standards for thermocouples, in fact a large group just among the ASTM standards. If you seek copies of the thermocouple tables or information on them visit our thermocouple tables page.
  5. Standards Related to Resistance Temperature Detectors
    Resistance Temperature Detectors, also known as RTDs, PRTs (Platimum Resistance Thermometers) and SPRTs (Standard Platimum Resistance Thermometers) come in more than Platinum, as you will know if you have been to the RTDs page on this site.
  6. Standards Related to Radiation Thermometers and Thermal Imagers
    Infrared Thermometers, Optical Pyrometers and Thermal Imagers all are based on the same physical phenomena of nature but have different standards associated with them. Most of the Thermal Imager standards have little to do with temperature measurement (they are mostly about imaging properties) but that situation appears to be due for some changes soon.
  7. Standards Related to Thermistors
    Most of the Thermistor standards are related to clinical uses of thermistor-based thermometers to measure human temperatures.
  8. Standards Related to Liquid-In-Glass Thermometers
    Liquid-in Glass thermometers are undergoing some serious changes as the"War on Mercury" heats up (pun intended). But seriously there are many standards for "Glass Thermometers" that are based on the properties of them where mercury is the liquid in the capillary. It will be some time before all the standards are rewritten, but non-mercury devices are on the market already from more than one company. Suffice it to say, it appears that there are quite a few tradition-bound standards that cannot accept that more accurate and cost effective temperature measurement devices are already on the market, e.g. RTDs and Thermistors, that have already surpassed fragile glass thermometers. Just witness what is available in your local Pharmacy (Chemist) at very competitive prices for use in taking fever temperatures.
  9. Standards Related to Phase-Change and Liquid Crystal Thermometers
  10. Standards Related to Electronic Thermometers and Other Devices

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