BAPI Submersible Averaging Temperature Sensors Catalog Page

Submersible Averaging Temperature Sensors (

20906_ins_SubmersibleAvg_Passive

Overview and Identication

The Submersible Averaging unit is for duct mounting
and temperature measurement of moisture saturated,
stratied air across a duct with a humidier or OSA intake
to give the average mixed air temperature along the
length of the sensor.

The unit may also be used as a sump sensor to average
the water temperature in a water tank. The exible
probe is made of copper and made in different lengths
for a custom duct t. The unit is available in multiple
thermistor’s or RTD’s as shown in the specications.
Enclosure mounting styles come in plastic or metal
for both NEMA 1 and NEMA 4 applications and are all
plenum rated.

BA/#SA)

Installation & Operations

rev. 06/29/15

Fig 1: Duct Unit with No Box (NB)

Fig 2: Duct Unit with J-Box (Standard)

Fig 4: BAPI-Box (BB) Duct Unit

Fig 3: WeatherProof (WP) Duct Unit

Fig 5: BAPI-Box 2 (BB2) Duct

Fig 6: Weather Tight Enclosure (EU) Duct Unit

Fig 7: BAPI-Box 4 (BB4) Duct Unit

(A Pierceable Knockout Plug is available from BAPI

for the open port in the BB4. Part #BA/PKP-100)

Specications subject to change without notice.

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Submersible Averaging Temperature Sensors (

20906_ins_SubmersibleAvg_Passive

Mounting

1. Place the sensor in the middle or top of the duct as shown in Fig 8 or Fig 9
so the exible probe can enter the duct in a convenient place. Drill the probe
and mounting holes as depicted for the enclosure being used. (No Box,

Handy Box, BB, BB2, WP, EU, BB4).

2. Insert the probe by unrolling the sensor into the duct carefully to avoid kink-

ing the sensor. Serpentine the duct with the sensor at least twice across the
stratied air in the duct to achieve the best average temperature reading. At
the sensor reversing points a turning bracket (BA/FPB) should be used to
support the sensor and to avoid kinking the sensor.

BA/#SA)

Installation & Operations

rev. 06/29/15

3. Mount the enclosure to the duct using BAPI recommended #8 screws
through a minimum of two opposing mounting tabs provided. Weatherproof
(WP) enclosures will require assembly of the mounting tabs on opposite cor­ners. A 1/8 inch pilot screw hole in the duct makes mounting easier through
the mounting tabs. Use the enclosure tabs to mark the pilot hole locations.

4. Snug up the sensors so that the foam backing is depressed to prevent air
leakage but do not over-tighten or strip the screw threads.

Note 1: Be sure not to drill into the weatherproof enclosures (BB, BB2, WP, EU,

EUO) which will violate the NEMA and/or the IP rating.

Note 2: Be sure to use caulk or Teon tape for your conduit entries to maintain

the appropriate NEMA or IP rating for your application.

Note 3: Conduit entry for outdoor or wet applications should be from the bottom

of the enclosure.

Fig 8: Flexible Sensor Horizontal Mount

(Best for Vertical Stratication)

Fig 9: Flexible Sensor Vertical Mount

(Best for Horizontal Stratication)

Fig 10: Junction Box or No Box (NB)

Mounting Holes and installation

Fig 11: BAPI-Box 2 (BB2) Mounting

Holes and installation.

Specications subject to change without notice.

Fig 12: BAPI-Box (BB) Enclosure Mount-

ing and installation Holes (Rotate
90° for Horizontal Mounting)

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