STATE the two environmental concerns that can affect the accuracy and reliability of temperature detection instrumentation
Ambient temperature variations will affect the accuracy and reliability of temperature detection instrumentation. Variations in ambient temperature can affect the resistance of components in a bridge circuit and the resistance of the reference junction for a thermocouple.
Ambient temperature variations can affect the calibration of electric/electronic equipment. The effects of temperature variations are reduced by the design of the circuitry and by maintaining the temperature detection instrumentation in the proper environment.
Humidity will also affect most electrical equipment, especially electronic equipment. High humidity causes moisture to collect on the equipment. This moisture can cause short circuits, grounds, and corrosion, which, in turn, may damage components. Maintaining the equipment in the proper environment controls the effects due to humidity.