186-0089 Siemens Transmitter

This 186 Duct Humidity Transmitter is an one-pipe, direct acting pneumatic instruments that sense space humidity and transmit a 3 to 15 psi pneumatic signal to a remote receiver gauge and/or receiver-controller to read percent relative humidity. This transmitter has a 20 to 80 percent relative humidity, an outlet pressure of 3 to 15 psi, and is to be mounted vertically at least 6″ high and 6.5″ deep. The transmitter should be used in the return air ducts.