Duct Humidity/Temperature Sensor

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Duct Humidity/Temperature Sensor

The HU-226 is an extremely fast, stable and accurate humidity/temp sensor designed for harsh environments. The polymer humidity capacitance sensor is protected with an ePTFE (expanded Teflon) filter media. The Teflon protected cross-linked capacitive humidity sensor is not affected by prolonged exposure to condensing humidity, harsh environments, contaminants, fog or other extreme environmental conditions.


Features Ultra fast response cross-linked bulk polymer capacitive sensing element Proprietary hydrophobic and oleophobic ePTFE filter to protect the sensing element from condensation, fog, salt air, pollutants and other contaminants Rugged steel enclosure and thick-walled aluminum probe rated NEMA-4 (IP-65) to withstand weather extremes NIST traceable ± 2% RH or ± 3% RH calibration accuracy Two temperature compensated humidity output versions, 4-20 mA 2-wire or field selectable 0-5 VDC/0-10 VDC Conforms to EMC and RoHS standards Five installation options—probe with mounting flange or bulkhead fitting, plastic, galvanized steel, or NEMA-4 / IP-65 steel enclosure offer the industry's most extensive range to satisfy all HVAC, appliance and industrial applications. 304 SS thin wall probe with a cold rolled hermetically sealed end forms a monolithic encapsulation cavity for the sensor and is immune to failures caused by high humidity, contamination, thermal shock and vibration. The flat probe end provides a large thermally sensitive area and the sensor is in direct thermal contact to this surface. As a result, extremely fast response is achieved to changes in temperature. Probe is attached to the enclosure or the flange using a patented process to provide a rugged, reliable and low profile attachment for ease of installation. More than 16 types of interchangeable NTC thermistors, precision platinum, nickel or balco RTDs are available for universal compatibility.

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