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Each unit is calibrated against our working factory standard which is traceable to ‘NMi’ Netherlands or National Physics Laboratory, UK. In addition to the normal calibration procedure, each transmitter can be supplied with its own traceable calibration certificate. Please ask your local supplier for more information.

Rotronic recommends an annual calibration for an accuracy requirement of ±2% RH under ambient conditions where temperature is 0 - 50°C and relative humidity is 0 - 70% RH.

If the measured environment contains chemicals or the measurement is at high humidity and high temperature conditions, Rotronic recommends a recalibration after 6 months.

For questions about whether your application requires a more frequent recalibration please contact the local Rotronic’ distributor.