The S503 from Michell Instruments is said to make field calibration of RH sensors and humidity probes affordable, practical and flexible.
The humidity calibrator weighs 2kg and is 24cm wide.
It is portable, compact and supplied with a carry case.
The S503 provides thermal stability to better than 0.1C.
In combination with a Michell Chilled Mirror Hygrometer, such as the Optidew Vision, users can create a complete, traceable humidity-calibration system.
The S503 can be used by all staff, as no specialist training or experience is necessary.
The calibration chamber can calibrate up to seven probes at once.