Aci A/RH2-AN-0 relative humidity transmitter outside air 2% accuracy

Product Description

The ACI A/RH2-AN-0 Relative Humidity Transmitter is engineered for precise outside air humidity monitoring in HVAC and Building Automation Systems. It incorporates a capacitive humidity sensor and a 10K Type 3 Thermistor for temperature sensing. This device offers field-selectable 4-20 mA, 0-5 VDC, or 0-10 VDC outputs and operates on 12-40 VDC or 18-28 VAC power. Each unit is calibrated using a NIST Traceable Temperature/Humidity Chamber, ensuring accuracy for critical environmental control.

• Field-selectable current or voltage outputs for versatile integration.
• Duct and OSA twist-off NEMA 4 housing provides weatherproof protection.
• Integrated 10K Type 3 Thermistor for optional temperature sensing.

Product Highlights

Accurate relative humidity monitoring for outside air applications with field-selectable outputs and robust weatherproof housing.

Product Information

Standard Information

• Brand: ACI
• Manufacturer Part Number: A/RH2-AN-0

Technical Specifications

• Accuracy: ±2% @ 77°F (25°C) from 10% to 95%
• Housing Material: Poly
• Sensor Type: 10K Type 3 Thermistor
• Output Signal: 4-20 mA @ 300Ω, 0-5/10 VDC @ 4kΩ min (field selectable)
• Input Voltage: 12-40 VDC or 18-28 VAC
• Application: Outdoor Air Humidity, Economizer Control, Psychrometric Calculations, Enthalpy, Dew Point, Wash Down Applications
• Mounting Type: OSA
• Stability: ±2% RH/5 years
• Measurement Range: 0% to 100%
• Sensing Technology: Capacitive
• Operating Temperature: -40° to 140°F (-40° to 60°C)
• Enclosure Type: Plastic weatherproof