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Installation and Operating Instructions

Duct and Outside Air Humidity (H200-H300) 

4 to 20mA or 0 to 5V Humidity Output with Optional Temperature Sensor

Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI  54631 USA

Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:[email protected] • Web:www.bapihvac.com

9938_ins_hum_temp_duct_out_5_20

2 of 4

rev. 02/15/18

Specifications subject to change without notice.

  Wiring and Termination

Fig. 9:

 Wiring Diagram

NOTE: 

BAPI’s

 

2% and 3%, humidity transmitters 

ARE 

polarity sensitive as well as reverse polarity protected.  

Table 1: Humidty Transmitter with 4 to 20mA Output

Wire Color Purpose

Note

 White

Not Used

Not Used  (Cap Wires)

 Black

Humidity Output

4 to 20 mA, To Analog Input of Controller

 Red

Power

10 to 35VDC

Table 2: HumidityTransmitter with 0 to 5VDC Output

Wire Color Purpose

Note

 White

Humidity Output

0 to 5VDC, To Analog Input of Controller

 Black

GND (Common)

Ground for Power and Humidity Output

 Red

Power

10 to 35VDC or 12 to 27 VAC

Optional Temperature Sensor Output

See Table 3 above for Wire Colors  

(Sensors are not polarity sensitive,   

3 wires used for 3-wire RTDs)

 

Humidity Output

& Power

See Tables 1 and 2 above 

for Wiring Information

1.8KΩ

Orange/Red

100Ω

Red/Red

2.2KΩ

Brown/White

1KΩ

Orange/Orange

3KΩ

Yellow/Black

3.25KΩ

Brown/Green

1KΩ

Green/Green

3.3KΩ

Yellow/Brown

10K-2Ω

Yellow/Yellow

2KΩ

Brown/Blue

10K-3Ω

Yellow/Red

10K-3(11K)Ω

Yellow/Blue

100Ω

Red/Red/Black*

20KΩ

White/White

1KΩ

Orange/Orange/Black*

47KΩ

Yellow/Orange

50KΩ

White/Blue

100KΩ

Yellow/White

Table 3: Temperature Sensor Lead Wire Colors

 Nickel RTD

Silicon RTD

*In the 3-Wire RTD sensors listed above, 

the two wires of similar color are 

connected together.

Additional sensors are available so your sensor may not be listed on this table.

Thermistors

Platinum RTDs - 2 Wire

Platinum RTDs - 3 Wire

BAPI recommends using twisted pair of at least 22AWG and sealant filled connectors for all wire connections. Larger 

gauge wire may be required for long runs. All wiring must comply with the National Electric Code (NEC) and local codes. 
Do NOT run this device’s wiring in the same conduit as AC power wiring of NEC class 1, NEC class 2, NEC class 3 or with 

wiring used to supply highly inductive loads such as motors, contactors and relays.  BAPI’s tests show that fluctuating and 

inaccurate signal levels are possible when AC power wiring is present in the same conduit as the signal lines.  If you are 

experiencing any of these difficulties, please contact your BAPI representative.

BAPI recommends wiring the product with power disconnected.  Proper supply voltage, polarity, and 

wiring connections are important to a successful installation.  Not observing these recommendations may 

damage the product and will void the warranty.

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