ACI A/RH2-CP-R

Humidity Transmitter
Automation Components (ACI) | Part Number: ARH2CPR
$148.72

The A/RH2-CP-R is a relative room humidity transmitter having resistive temperature output. It utilizes a capacitive sensing element to deliver a proportional analog output. The features on board DIP switches which allow the user to select the desired output signal and can be powered by AC or DC power sources. Field calibration can be performed by using the on board increment and decrement DIP switches. These enhancements provide increased flexibility and outstanding long-term performance.

Ships in 4-6 weeks
  • Relative humidity transmitters utilize a capacitive sensing element to deliver a proportional analog output
  • This features on board DIP switches which allow the user to select the desired output signal
  • Field calibration can be performed by using the on board increment and decrement DIP switches
  • Duct and Outside Air configurations feature conformally coated circuit boards for moisture resistance
  • These enhancements provide increased flexibility and outstanding long-term performance

A/RH2-R Technical Data

RH Supply Voltage
4-20 mA: 250 Ohm Load: 15 - 40 VDC / 18 - 28 VAC
500 Ohm Load: 18 - 40 VDC / 18 - 28 VAC
0-5 VDC: 12 - 40 VDC / 18 - 28 VAC
0-10 VDC: 18 - 40 VDC / 18 - 28 VAC

Supply Current
Voltage Output: 8 mA maximum
Current Output: 24 mA maximum

RH Output Load Resistance
4-20 mA: 700 Ohms maximum
0-5 VDC or 0-10 VDC: 4K Ohms Minimum

RH Output Signal
2-wire: 4 to 20 mA (standard)
3-wire: 0-5 VDC, 0-10 VDC or 4 to 20 mA

RH Accuracy @ 77 F (25 C)
+/- 1% over 20% span (between 20 to 90%)
+/- 2%, 3%, or 5% from 10 to 95%

RH Measurement Range
0-100%

Operating RH Range
0 to 95% RH, non-condensing

Operating Temperature Range
35 to 122 F (1.5 to 60 C)

Storage Temperature Range
-40 to 149 F (-40 to 65 C)

RH Stability, Repeatability, Sensitivity
Less than 2% drift / 5 years, 0.5% RH, 0.1% RH

RH Response Time
20 Seconds Typical

RH Sensor Type
Capacitive with Hydrophobic Filter

RH Transmitter Stabilization Time
30 Minutes (Recommended time before doing accuracy veri cation)

RH Connections and Wire Size
Screw Terminal Blocks (Polarity Sensitive)
16-26 AWG

RH Terminal Block Torque Rating
4.43 to 5.31 lb-in (0.5 to 0.6 Nm)

RH NIST Test Points
Default Test Points: 3 Points (20%, 50% & 80%)
5 Points (20%, 35%, 50%, 65% & 80%)
1% NIST Test Points: 5 Points within selected 20% Range (ie. 30%-50% are 30, 35, 40, 45 & 50)

Thermistor Resistive Output @ 77 F (25 C)
10K ohm Nominal

Thermistor Accuracy 32-158 F (0-70 C)
+/- 0.36°F (0.2°C)

Thermistor Power Dissipation Constant
3 mW/C

Thermistor Sensor Response
10 Seconds nominal

Temperature Connections and Wire Size
Screw Terminal Blocks (Polarity Sensitive), 16-26 AWG

Temperature Terminal Block Torque Rating
4.43 to 5.31 lb-in (0.5 to 0.6 Nm)