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Title: The effect of freezing-thawing cycles on thermistor calibrations
Authors: Massachusetts Institute of Technology. Dept. of Civil and Sanitary Engineering.
United States. Army. Corps of Engineers. New England Division.
Clark, John N.
Spahr, J. Alan.
Hindle, Robert A.
Keywords: Themistors
Soil moisture
Freeze thaw cycles
Publisher: Arctic Construction and Frost Effects Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (Arctic Construction and Frost Effects Laboratory (U.S.)) ; no. 72.
Description: Technical Report
Summary: The purpose of the investigation reported herein was to determine the effect of cyclic freezing and thawing on the electrical resistance of thermistors at the ice point. The units tested were three disc thermistors contained in fiber glass soil-moisture units and five exposed disc-type thermistors (thermistor characteristics are given in paragraph 2-04a). In. each test, the units were subjected to 20 freezing-thawing cycles in an environment of Fairbanks (Alaska) silt to simulate operating conditions. The change in electrical resistance was determined by measuring the resistance of each unit in an ice bath after 1, 5, 10, 15, and .20 cycles and comparing these measurements with their initial value.
Appears in Collections:Technical Report

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