USER-FRIENDLY MEASURING DEVICES humidity transmitters rht duct series Duct mount relative humidity transmitters for building automation systems RHT Duct is a relative humidity transmitter with temperature output installed in air ventilation duct. Illuminated display ensures easy readability also from a distance. The RHT has a screwless lid and an easily adjustable mounting flange that make the installation of the device easy. RHT Duct series devices include: • Separate output for each measurement parameter (rH, T). • Mounting flange RHT Duct series device options offer: • Clear backlit display • Modbus configuration RHT Duct series devices are commonly used to monitor and control: • Relative humidity and temperature levels of incoming and return air in ventilation system Copyright HK Instruments 2017 www.hkinstruments.fi Datasheet Version 7.0 2017

Physical Dimensions: Case: 119 x lOO x 44.7 mm Probe: L=188 mm, d=12 mm Mounting: With flange, adjustable O...188 mm Weight: 150 g Materials: Case: ABS Cover: PC Probe: ABS Mounting flange: LLPDP Protection standard: IP54 Electrical connections: 4 spring loaded terminals (24 V, GND, rH, T) O.2-1.5 mm2 (12-24 AWG) Performance Measurement ranges: Temperature: 0...50 °C Relative humidity: O-lOO % Accuracy: Temperature: <0.5 °C Relative humidity: ±2...3 % at O...5O 0C and 1O-9O % rH Total error band includes accuracy, hysteresis and temperature effect over 5...5O °C and 1O-9O % rH. Technical Specifications Media...