ACI-Automation Components RELATIVE HUMIDITY Data Sheet

Automation Components, Inc.

RELATIVE HUMIDITYHUMIDITY

Outside Air/Euro

Room (Previous & New)

Featured Relative Humidity Product

Duct/Euro

Stainless Plate

RELATIVE HUMIDITY

Humidity Transmitter

The A/RH Series relative humidity transmitters utilize a capacitive sensing element to deliver a
proportional analog output. This series features on board DIP switches which allow the user to
select the desired output signal. In addition, 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.

Automation Components, Inc. Made in the USA

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HUMIDITY RELATIVE HUMIDITY

SPECIFICATIONS

Automation Components, Inc.

RH Supply Voltage (4 to 20 mA)
RH Supply Voltage (4 to 20 mA)
RH Supply Voltage (0-5 VDC)
RH Supply Voltage (0-10 VDC)
Supply Current
RH Measurement Range
RH Output
Accuracy @ 77oF (25oC)
Long Term Stability
Repeatablity
Sensitivity
Operating Environment (Duct/Outside)
Operating Environment (Room)
RH Sensor Type
Product Dimensions (Duct/Euro)
Product Dimensions (Outside Air)
Product Dimensions (Room 2)
Product Dimensions (Room)
Product Dimensions (Stainless Plate)

(250 Ohm Load): 15 to 40 VDC/18 to 28 VAC
(500 Ohm Load): 18 to 40 VDC/18 to 28 VAC
12 to 40 VDC/18 to 28 VAC (4K Load minimum)
18 to 40 VDC/18 to 28 VAC (4K Load minimum)
Voltage Output: 8 mA maximum | Current Output: 24 mA maximum
0-100%
2-wire: 4 to 20 mA (Factory Standard) | 3-wire: 0-5, 0-10 VDC or 4 to 20 mA
+/- 1% over 20% span (between 20 to 90%) | +/- 2%, 3%, or 5% from 10 to 95%
Less than 2% drift/5 years

0.5% RH

0.1% RH
Duct/Outside: 0 to 100 % RH (non-condensing) | -40 to 140
Room: 0 to 95% RH (non-condensing) | 32 to 122
Capacitive
Enclosure: (W) 3.60” (D) 2.25” | Probe: (L) 7.15”
Cover: (H) 3.61” (W) 4.00” (D) 2.25” | Stem: (H) 3.00” (W) 1.13”
(H) 4.50” (W) 2.75” (D) 1.12”
(H) 4.51” (W) 2.75” (D) 2.90”
Plate: (H) 4.51” (W) 2.76” (D) 0.19” | Filter: (L) 1.06”

o

F (0 to 50oC)

o

F (-40 to 60oC), Conformally Coated Boards

ORDERING

Select one Series (A). If A/RH1 is selected, you must specify a 20% range. Choose one Configuration (B) and one Output (C). NOTE: 4 to 20 mA
output is not available for the SP configuration.

Accuracy Configuration

A/RH1 (+/-1%) (Specify a 20% Range)

(+/-2%)

A/RH2

(+/-3%)

A/RH3

(+/-5%)

A/RH5

D (Duct/Euro)

(Outside Air/Euro)

O

(Stainless Plate)

SP

(Room, New Enclosure)

R2

(Room, Previous Enclosure)

R

Output

---- (4 to 20 mA) (Field selectable output to 0-5 VDC or 0-10 VDC)
(0 to 5 VDC) (Field selectable output to 0-10 VDC or 4 to 20 mA)

05

(0 to 10 VDC) (Field selectable output to 4 to 20 mA or 0-5 VDC)

010

BUILD PART NUMBER

After completing (A), (B), & (C) from the above table, fill in the Part Number Table below. An example part number is offered.

EXAMPLE: A/RH3 - D - 010

The Euro enclosure has a UL94-V0 flammability rating.

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