Salt Water Immersion-Thermistor Assembly Style H7183 Reliability Testing

Reliability Testing

U.S.  Sensor Test Report Thermistor Assembly Part Evaluation

(H7183 Style Pipe Temperature Sensor)

H7183 - Thermistor Assembly

H7183 - Thermistor Assembly Drawing

Salt Water Immersion

Style: H7183

Part Description: Pipe Thermistor Temperature Sensor

Test Specification:

Special

Test Condition (s):

Parts were immersed in a 5% salt water solution, the solution temperature was cycled from ~+30°C to ~+80°C 14 cycles per day. During the duration of the test, 12 volts D.C. was applied continuously to each circuit consisting of a 20K Ohm resistor in series with each D.U.T.

Following the salt water immersion test above, the thermal shock test below was performed

Shock test (10 cycles 0°C salt water to +80°C salt water)

Test Duration: One Month

Sample # Day 1 Ω Resistance @ 25°C Accept/ Reject Day 30 Ω Resistance @ 25°C Accept/ Reject Day 30 Ω Resistance @ 0°C Accept/ Reject Post Shock Test Day 30 Ω Resistance @ 25°C Accept/ Reject
1 9944.4 A 9949.8 A 33008 A 9946.5 A
2 9959.2 A 9957.5 A 32929 A 9955.1 A
3 9927.8 A 9927.9 A 32785 A 9929.6 A
4 9971.9 A 9976.0 A 32889 A 9967.3 A
5 9899.9 A 9907.2 A 32715 A 9907.7 A
6 9935.4 A 9939.5 A 32827 A 9935.8 A
7 9890.8 A 9885.3 A 32574 A 9891.3 A
8 10049 A 10048 A 33194 A 10047 A
9 9902.4 A 9905.5 A 32724 A 9906.2 A
10 9917.7 A 9918.3 A 32684 A 9919.8 A
11 9938.1 A 9943.0 A 32765 A 9936.6 A
12 10044 A 10048 A 33288 A 10045 A

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