ACI 122687 Duct Humidity Transmitter 0-5/0-10 VDC 4-20mA Output

The ACI 122687 (model A/RH2-D) is a duct-mounted relative humidity transmitter offering selectable output signals of 0-5 VDC, 0-10 VDC, and 4-20mA with ±2% accuracy. This transmitter utilizes a capacitive humidity sensor element and is designed for use in Building Automation Systems (BAS) and HVAC applications.

Key Features:

• Thermoset polymer capacitive sensing element with factory-fitted hydrophobic filter for improved moisture resistance
• Field calibration can be performed using increment and decrement calibration DIP switches without replacing the sensing element
• Weatherproof Euro style enclosure with gasketed cover and conformally coated circuit boards for increased moisture resistance in high humidity environments
• Sensor protected by stainless-steel sintered filter
• On-board DIP switches allow user to select desired output signal and can be powered by AC or DC power sources
• Calibrated using a NIST Traceable Temperature/Humidity Chamber
• Covered by ACI's Five (5) Year Limited Warranty

The sensing element's multilayer construction provides excellent resistance in applications where dust, dirt, oils and common environmental chemicals are found. Ideal applications include humidification, dehumidification, supply/discharge/return air monitoring, economizers, clean rooms, data centers, process control, schools, hospitals, and office buildings.