ACI 122882 Outside Air Humidity Transmitter with 10K Thermistor

The ACI 122882 (A/RH3-CP-O) is an outside air relative humidity transmitter with integrated 10K Type II thermistor, specifically designed for HVAC and building automation system applications. This transmitter features ±3% accuracy and delivers proportional analog output signals to monitor outdoor environmental conditions.

Key Features:

• Thermoset polymer capacitive sensing element with factory-applied hygroscopic filter for enhanced moisture, dust, and chemical resistance
• Selectable output signals: 0-5 VDC, 0-10 VDC, or 4-20mA (default) via integral DIP switches
• Integrated 10,000 Ohm Type II thermistor for simultaneous temperature measurement
• Field-selectable supply voltage and output configuration without additional tools
• Built-in test options (0%, 50%, 100%) to verify proper operation and wiring
• Field calibration capability using onboard increment/decrement DIP switches
• Euro-style plastic outdoor enclosure for weather-resistant installation
• Conformally coated circuit board provides superior moisture resistance
• NIST traceable calibration for reliable accuracy

Ideal for applications including economizers, outdoor air monitoring, enthalpy control, and HVAC systems requiring accurate humidity and temperature measurement in exterior environments. The capacitive sensing technology ensures long-term reliability and maintains accuracy over extended periods, even in harsh outdoor conditions.