HMW40 & HMW50 Humidity and Temperature Transmitters Wall-mounted HMW40 and HMW50 transmitters are designed for use in air conditioning systems; they combine excellent stability with easy installation and reliable operation. In addition to this the transmitters are fitted with the interchangeable INTERCAP® sensor, so they do not need any adjustements if the sensor is changed. Features excellent stability, easy installation and reliable operation. Interchangeable sensor, no recalibration required. Specially designed for building energy management systems 10 ... 90 % RH measurement -10 ... +60 °C (+14 ... +140 °F) operating range for duct units -5 ... +55 °C (+23 ... +131 °F) operating range for wall units 4 ... 20 mA 2-wire output (HMD/W40) Selectable voltage 3 wire output (HMD/W50) Combines excellent stability with easy installation and reliable operation No recalibration needed Fully interchangeable Vaisala INTERCAP® Sensor is easy to replace Low cost 2 Year Warranty HMDW40_50 Brochure HMW40_50 User Guide HMW40 Wiring Diagram HMW50 Wiring Diagram Relative humidity measurement Measurement range 10 ... 90 % RH Accuracy at +20 °C (+68 °F) better than ± 3 % RH Operating range:      HMW40/50 0 ... 90 % RH Sensor Vaisala INTERCAP® Temperature measurement Measurement range      HMW40/50 -5 ... +55 °C (+23 ... +131 °F) Accuracy at +25 °C ± 0.3 °C (± 0.54 °F) Sensor Pt 1000 IEC 751 class B Operating environment Operating temperature      HMW40/50 -5 ... +55 °C (+23 ... +131 °F) Storage temperature -40 ... +60 °C (-40 ... +140 °F) Inputs and outputs Operating voltage      HMW40      HMW50 for              0 ... 1 V output              0 ... 10 V output 10 ... 28 VDC 12 ... 35 VDC/ 12 ... 24 VAC 15 ... 35 VDC/ 15 ... 24 VAC Power consumption      HMW40      HMW50 min. 4 mA 6 mA (typical) Mechanical Material (housing) ABS plastic Electromagnetic compatibility Complies with EMC standard EN61326-1, Generic Environment

Code	Name	Price
VIHMW50U	Vaisala HMW 50U Humidity transmitter for wall mounting, calibration-free	$190.00
VIHMW50Y	Vaisala HMW 50Y Humidity and temperature transmitter for wall mounting, calibration-free	$250.00