ZHCU623 January   2019

 

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3.2.1.3 System Accuracy

ASTM E1112 recommends testing of system accuracy using a liquid bath with a calibrated probe of at least 30m°C accuracy. The test setup used for verifying the design temperature accuracy is intended to mimic this setup. During accuracy testing, one of the patches is submerged in a liquid oil bath and powered through an external 3-V supply. The bath is then moved through various points in the human body temperature range, and multiple readings are taken to correlate with the calibrated probe. This setup is shown in Figure 18.

TIDA-01624 Accuracy_test_setup.pngFigure 18. Test Setup for Temperature Accuracy Testing of the TMP117 Flex Patch. Stirred Liquid Baths Provide Very Uniform Thermal Environments.