By rowanjenkins | Last updated 24th April 2024

ASTM E644 Standard Test Methods for Testing Industrial Resistance Thermometers

The ideas, tools, and techniques for calibrating and testing industrial resistance thermometers are covered by ASTM E644. The tests covered by ASTM E644 include those for thermoelectric effect, humidity, mechanical shock, self-heating effect, insulation resistance, calibration, immersion error, pressure effects, thermal response time, vibration effect, and end seal integrity. It should not be assumed that ASTM E644 can be used with every kind of thermometer.

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    Introduction to ASTM E644

    Within the bounds of repeatability, ASTM E644 offers uniform procedures for testing industrial resistance thermometers, allowing a tester to anticipate receiving the same value of a test result from repeatable measurements made on the same test product. MaTestLab is one of the best testing service providers, with the best network of testing laboratories in the USA to carry out ASTM E644 tests for our clients. The ASTM E644 standard can be used to assess the suitability of platinum resistance thermometers for use in a given application to comply with a specific specification, to compare the relative benefits of similar test articles provided by multiple manufacturers, or to establish the parameters of a specific thermometer design’s application. 

    ASTM E644 Test Method

    The ASTM E644 Test Method includes the following major tests;

    Insulation Resistance TestThe thermometer is mounted and insulation resistance measurements are taken after applying voltage.
    Thermometer CalibrationBoth the fixed-point approach and the comparison method, or both, can be used to calibrate a resistance thermometer. 
    Minimum Immersion Length TestBoth the test bath’s temperature stability and the measuring equipment’s sensitivity need to match the given temperature measurement uncertainty. The goal of this test is to be non-destructive.

    ASTM E644 Test Specimens

    Specimen DetailThe equipment, techniques, and principles involved in calibrating and testing industrial resistance thermometers are covered by ASTM E644
    Specimen SizeOnly thermometers with immersion lengths of less than 51 mm (2 in) are suitable for this test.

    ASTM E644 Test Result

    To sum up, ASTM E644 covers a wide range of analyses that are essential for determining the effectiveness and dependability of temperature sensors and associated equipment. These tests address several topics, such as humidity tolerance, thermoelectric behavior, immersion behavior, pressure and vibration effects, insulation resistance, calibration accuracy, thermal response characteristics, mechanical shock resistance, stability, and end seal integrity.

    Tests Related to ASTM E644ASTM E644 is related to tests including ASTM E1 for liquid in glass type thermometers, ASTM E77 for thermometer inspection, and ASTM E344 for thermometry-related terms.

    FAQ's

    Where can I get the astm e644 tested?

    You can share your astm e644 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm e644 test to various testing techniques.

    How much do I need to pay for the astm e644 test?

    Please contact us for a detailed quote for your astm e644 testing needs. Cost incurred to carry out different astm e644 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.

    How many samples are required for astm e644?

    The required number of samples or specimens should comply with the procedure given in the astm e644 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.

    How much discount can I get on the astm e644 test?

    MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.

    How many days will it take to complete the astm e644 test?

    The turnaround time for astm e644 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.

    Where can I get the astm e644 tested?

    You can share your astm e644 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm e644 test to various testing techniques.

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