Common process manufacturing applications cover a variety of temperature ranges.  Here are some examples of temperature ranges for common process manufacturing applications:

• Freezers: –95 to –60 ºC

• Freeze drying: –80 to –50 ºC

• Blood banks: –50 to –30 ºC

• Washer disinfectors: up to 70 ºC

• Autoclave sterilization: 120 to 135 ºC

• Steam-in-place (SIP) sterilization: 121 ºC 

• Food processing: 0 to 220 ºC

• Process control & automation: up to 1000+ ºC

Each company usually has a policy about which temperature points are required for sensor calibration.  If a policy isn’t available, a best-practices recommendation is to calibrate sensors over the entire temperature range they are monitoring. Referred to as bracketing, it is also common practice to select calibration points beyond the DUT’s measurement range by ±10 °C.