Overview
The HRT room transmitters for use with our Demand Control Ventilation systems are for measuring humidity or temperature in a room.
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Features and Benefits
Relative Humidity
149-DCV-HRT transmitters have a capacitive thin-film element which gives a signal that is proportional to the relative humidity. The measuring signal is converted by the built-in electronics to output signal 0…10V. The sensor element has rapid response to changes in humidity and excellent long-term stability. The element also has good
durability in contaminated environments.
Supply Voltage
For output signal 0…10 V, the transmitter should be supplied with 24 V AC ±10 % or 15…35 V DC. The transmitter has automatic adaptation to the connected voltage.
Accuracy at 20%
Humidity: ±3 % RH, Temperature: ±0.4°C (±0.3°C with temperature sensor PT1000).
Installation
The transmitter should be mounted in a location with good air circulation where it can be expected to give a representative reading. It may be mounted on a wall-box or directly on the wall. To remove the front cover, depress the locking tongue in the lower part of the casing using a 3 mm flat-blade screwdriver. Press and twist the screwdriver and at the same time pull the bottom part of the casing, slide the cover towards the top of the casing to free the hooks holding the upper edge of the front cover.
