Automation-components ACI/ACI RH Room Series Manuel d'utilisateur télécharger pdf

2305 Pleasant View Rd.  Middleton Industrial Park  Middleton, WI 53562

PH: (608) 831-2585 



 FAX (608) 831-7407

I0000144.DOC REV 2

Installation and Operation Instructions

ACI/RH Room Series

ACI

Automation Components, Inc.

Please Read Instruction Carefully Before Installation!

The ACI/RH Room Series transmitters are a universal Relative Humidity transmitter that can be powered with either a DC

or AC supply voltage (See Figure #4). The ACI/RH uses a half-wave bridge rectifier to convert the AC power to a

useable DC voltage. Caution: When using a 24 VAC transformer, ACI recommends that you use an isolated

transformer. If sharing the transformer with your controller, valve, actuator, or any other device, be sure to connect

all of the devices with the proper polarity, since most controllers are earth grounded. Failure to do so may result in

damage to the ACI/RH, your controller, or any other devices that are attached due to a ground loop problem.

The ACI/RH Room transmitters are designed with a field selectable 4-20 mA, 0-5 VDC, or 0-10 VDC output signal that is

equivalent to 0 to 100% RH. Unless specified upon ordering, all units are shipped from the factory to accept DC power

with a 2-wire, 4-20 mA loop-powered output. Caution: When changing the Output Selection Switch (SW3) make sure

that the power supply is turned off before making any changes. Failure to do this may cause damage to the unit.

 RH Wiring Diagram

ACI recommends that all ACI/RH 4-20 mA Room relative humidity transmitters be wired with a 16 to 22 AWG 2-wire

twisted pair or shielded cable for best results. All ACI/RH Room voltage output transmitters should use a 3-wire 16 to 22

AWG shielded cable. Note: When using a shielded cable, be sure to connect only (1) end of the shield to ground at

the controller. Connecting both ends of the shield to ground may cause a ground loop.

2 3

4 5 6

SW2

SW3

Io GndVin

Relative Humidity Sensor

Span Adjust

Potentiometer

Zero Adjust

Potentiometer

DC Power

AC Power

Figure # 2

Output Selection Switches (SW3)

4-20mA Out

AC/DC Power

0-10 VDC

0-5 VDC Out

Test and Calibration Switch Settings (SW2)

100% RH Output

50% RH Output

0% RH Output

Figure # 3

Normal Operating Condition

Reset to Original Calibration

Decrement RH Output

Increment RH Output

5 6

Figure # 1

Wire Access Hole

Relative Humidity Temperature Sensor

Temperature Sensor (Combination Unit)

1 2 3 4

Résumé du contenu

Page 1 -  RH Wiring Diagram

2305 Pleasant View Rd.  Middleton Industrial Park  Middleton, WI 53562 PH: (608

Page 2 - I0000144.DOC REV 2

2305 Pleasant View Rd.  Middleton Industrial Park  Middleton, WI 53562 PH: (608) 831-2585 

Page 3 - Figure # 6

2305 Pleasant View Rd.  Middleton Industrial Park  Middleton, WI 53562 PH: (608) 831-2585  FAX (608) 831-7407 I0000144.DOC REV 2 Decrement

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2305 Pleasant View Rd.  Middleton Industrial Park  Middleton, WI 53562 PH: (608) 831-2585 

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Automation-components ACI/ACI RH Room Series Manuel d'utilisateur

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