Dwyer Intruments announced the new series RH-R humidity transmitter, ideal for those applications where space is limited, such as environmental chambers, rubber bladder burst detection systems and air handler applications.

 

The compact sensor is protected by a removeable filter and can be mounted up to 16 feet away from the weatherproof base. The Series RH-R transmitter is designed as a two-wire 4-20 mA device with two channels. The channels are common on the positive side of the current loops. Sensor excitation power is derived from the relative humidity channel, so power must always be applied to that channel. If the temperature channel is not equipped or used, it can be left disconnected.

Upon final installation of the series RH-R temperature/humidity transmitter and the companion receiver, no routine maintenance is required. A periodic check of the system calibration is recommended. According to the company’s press release, the series RH-R is not field serviceable and should be returned if repair is needed (field repair should not be attempted and may void warranty).