Veriteq Calibration

Relative Humidity Calibration & Test Facilities

Withnell Instruments is equipped to perform routine RH and temperature calibrations accurately, quickly and economically. Calibrations are performed in a specially insulated and precision temperature-controlled RH environmental chamber designed for uniform air circulation and temperature and humidity stability.

We use a Thunder Scientific Model 2500 "Two Pressure" Humidity Generator with a rated NIST-traceable RH accuracy of +/-0.5% RH over a range of 10% to 98% RH and 0 to 70° C. The chamber can be programmed for any RH or temperature point within the rated ranges. Typical calibration profiles are programmed at 11%, 45% and 80% RH at 25° C.

In addition to the use of the Thunder Scientific chamber, we employ a completely independent system (an RH Systems/MBW Calibration Model 373 Dew Point Mirror) to verify results and provide the highest possible level of assurance that calibration results are correct.