BAPI Temperature Transmitters Catalog Page

Temperature Transmitters

Installation & Operating Instructions

9518_ins_txmtr

rev. 10/12/15

Termination

BAPI recommends using twisted pair of at least 22AWG and sealant lled 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 class1 or 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 uctuating and inaccurate signal levels are possible when AC power wiring is present in the
same conduit as the signal lines.

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.

Fig. 1: Typical 4 to 20mA RTD Transmitter w/ Flying Leads

Fig. 3: Typical 4 to 20mA Thermistor Transmitter

Fig. 2: Typical 4 to 20mA RTD Transmitter w/ Terminals

Fig. 4: Typical Thermistor Voltage Transmitter

Junction Box (JB) Mounting

The Junction Box mount is intended for indoor mounting in equipment
rooms, plenums or occupied spaces. Fig. 6 shows a typical Junction Box
mounting in an air duct. BAPI
recommends using #8 sheet metal
screws that need 1/8” pilot holes to
attach the sensor to the duct.

After placing the sensing element
in the duct, secure the mounting
ange to the duct; center the
plastic tting holding the probe in
the mounting hole. Make sure that
the foam seals the hole; do not
over tighten the screws.

Fig. 5: Junction Box Duct

Mounting Holes

Fig. 6: Junction Box Duct Installation

Specications subject to change without notice.

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Temperature Transmitters

Installation & Operating Instructions

9518_ins_txmtr

rev. 10/12/15

BAPI-Box (BB) Mounting

The BAPI-Box Enclosure is watertight and carries an IP66 rating (similar to a NEMA
4X rating) when the included screws are fastened on the latch. The BAPI-Box is
made of high impact, UV-resistant polycarbonate and features a hinged cover with
multiple knockouts. It is available for the full line of BAPI temperature sensors.

Duct Mounting

Mount the unit to its mounting surface with four #10 screws through the holes in the
mounting feet. #10 sheet metal screws require 5/32” (4mm) pilot holes. For concrete
or cinder block, drill four 5/32” (4mm) holes, 1-3/4” (45mm) deep. Make sure that all
screws are started in their holes before tightening evenly. If unit has a foam gasket,
only squeeze to about 1/2 of its original thickness. Be sure to seal conduit connector
threads and holes in mounting surface to maintain the integrity of the box.

Outside Mounting

The sensor must be mounted in the shade away from building windows, doors or
vents. The ideal shaded location in the Northern hemisphere is on the North side of

Fig 6: BAPI-Box enclosure

mounting holes, rotate 90°

for horizontal mount

the building. In the Southern hemisphere the South side of the building is ideal. The
probe should point down and the unit should mounted between 4 feet above the ground/roof and one foot minimum
below the eave.

Drill the mounting holes and mount as shown in the Fig. 9. Snug the mounting screws to compress the foam back­ing to about 50% of its original thickness to make a good seal to the wall surface. Route the wires into the box and
terminate with sealant lled connectors. Best practice is to caulk the wiring hole after the wiring is installed. Close
the cover of the BAPI-Box and secure with provided cover screws.

Fig 7: BAPI-Box Duct
Horizontal Installation

Fig 8: BAPI-Box Duct

Vertical Installation

Weatherproof (WP) Enclosure Mounting

The weatherproof enclosure is intended for outdoor
or equipment room mounting. Use the mounting tabs
provided to mount the enclosure as shown in gures
10-13. DO NOT drill screw holes through the back
wall of the box. This destroys the integrity of the box
and may void the warranty.

Duct Mounting

BAPI recommends using #8 sheet metal screws that
need 1/8” pilot holes to attach the sensor to the duct.

After placing the sensing element in the duct, secure
the mounting tabs to the duct; center the plastic
tting holding the probe in the mounting hole. Be

Continued on next page...

Specications subject to change without notice.

Fig. 10: Weatherproof

Enclosure mounting holes

Fig 9: BAPI-Box Outdoor Air

Installation

Fig. 11: Weatherproof

Enclosure Mounting Tabs

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