Gas Alarm Systems (a division of Alvi Technologies ) have launched the GAS-TH-A-K Temperature and Humidity sensors, designed to monitor relative humidity and temperature in HVAC Duct applications. They measure temperature and relative humidity in ventilation ducts.
The analogue outputs can be directly connected to any BMS (Building Management System), PLC, SCADA for automation and control. The humidity output is automatically corrected over the full range of operating conditions. It can also be ordered with wall mounting option. These temperature and humidity sensors are suitable for air-conditioning, refrigeration, and humidification projects.
For temperature measurement, the sensore use an NTC sensing element in the range of 0 – 50 º C(optional -20 to + 50 ºC). For Humidity it has a capacitive sensor for measuring in the range of 10 – 95% RH. They give 2 linear outputs for temperature and humidity (Optional: 0 – 10V, 0-5 V, RS 485).