BAPI Air Humidity Units Catalog Page

Duct & Outside Air Humidity Units with RTD Temperature Transmitter

Humidity Output (4 to 20mA, 0 to 5V, 0/2 to 10V), Temperature Output (4 to 20mA)

Installation and Operating Instructions

26415_ins_hum_RTD_temp_trans_duct_out

Overview

The BA/T1x-(H2xx, H3xx) is a humidity transmitter which comes in 2% or 3% accuracies and an RTD temperature

transmitter. It can be ordered for either Duct or Outside Air applications with a doublegang Weatherproof Enclosure
(NEMA 3R) or a BAPI-Box Enclosure (NEMA 4, IP66). The humidity transmitter can be ordered with 4 to 20 mA, 0 to
5VDC, 0 to 10V or 2 to 10V output while the temperature transmitter has a 4 to 20mA output.

Duct Unit Mounting

rev. 01/12/16

Fig. 1: Duct Humidity Unit in a Weatherproof (WP) Enclosure

Fig. 2: Duct Humidity Unit in a BAPI-Box (BB) Enclosure

Mount in the center of the duct wall at least 3 duct diameters from humidiers. Drill a 1 inch hole in the duct for the probe
and use two number 8 sheet metal screws to attach the sensor to the duct. Center the probe in its mounting hole. Be sure
that the foam seals the hole, but do not over tighten the screws.

Outside Air Mounting

Fig. 3: Outside Air Humidity in a Weatherproof (WP) Enclosure

Fig. 4: Outside Humidity Unit in a BAPI-Box (BB) Enclosure

Mount in a permanently shaded area away from windows and doors. Do not mount in direct sunlight. Mount with the
sensor probe pointed down. Drill a hole large enough for your sensor cable through your mounting surface. Mount the
unit to the surface with the wiring knock-out centered over the wiring hole. Pull the wiring into the unit and terminate using
sealant lled connectors. Best practice is to seal the wiring hole with caulk after the wiring is installed. Be sure that the
foam on the back of the unit makes a good weather tight seal.

Specications subject to change without notice.

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26415_ins_hum_RTD_temp_trans_duct_out

Table 1: Humidty Transmitter with 4 to 20mA Output

Table 2: HumidityTransmitter with 0 to 5VDC Output

Red

Termination

Duct & Outside Air Humidity Units with RTD Temperature Transmitter

Humidity Output (4 to 20mA, 0 to 5V, 0/2 to 10V), Temperature Output (4 to 20mA)

Installation and Operating Instructions

rev. 01/12/16

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

Wire Color Purpose Note
White Humidity Output 0 to 5VDC, To Analog Input of Controller
Black GND (Common) Ground for Power and Humidity Output

Power 10 to 35VDC or 12 to 27 VAC

Table 3: Humidity Transmitter with 0 to 10VDC Output
Wire Color Purpose Note

Green Humidity Output 0 to 10VDC, To Analog Input of Controller
Black GND (Common) Ground for Power and Humidity Output
Red Power 15 to 35VDC or 15 to 27VAC

Table 4: Humidity Transmitter with 2 to 10VDC Output
Wire Color Purpose Note

Brown Humidity Output 2 to 10VDC, To Analog Input of Controller
Black GND (Common) Ground for Power and Humidity Output
Red Power 15 to 35VDC or 15 to 27VAC

Table 5: Temperature Transmitter with 4 to 20mA Output
Wire Color Purpose Note
Black Temperature Output 4 to 20mA, To Analog Input of Controller
Red Power 7 to 40VDC

Humidity Output & Power

See Tables 1 through 4 above for

Wiring Information

Temperature Output and Power

See Table 5 above for Wiring

Fig. 5: Wiring Diagram

Notes:

2% and 3% Humidity Transmitters Are Polarity
Sensitive as well as Reverse Polarity Protected.

Information

Specications subject to change without notice.

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