BAPI Duct Averaging Transmitters Catalog Page

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Duct Averaging Transmitters
BA/T#-A Temperature Transmitter
Installation & Operations
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Overview
Identication
rev. 06/27/17
Fig 1: Flexible Probe Bracket (BA/FPB)
(Order Separately)
Fig 3: Duct Averaging Unit with Weatherproof (WP) Enclosure
Fig 2: Duct Averaging Unit with J-Box (Standard)
Fig 4: Duct Averaging Unit with BAPI-Box (BB) Enclosure
Fig 5: Duct Averaging Unit with BAPI-Box 2 (BB2) Enclosure
Specications subject to change without notice.
Fig 6: Duct Averaging Unit with Weather Tight (EU) Enclosure
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Duct Averaging Transmitters
BA/T#-A Temperature Transmitter
Installation & Operations
20914_ins_DuctAvgFlex_Active
Mounting
1. Place the sensor in the middle or top of the duct as shown in Fig. 7 or Fig. 8 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. (Handy Box, BB,
BB2, WP, EU).
2. Insert the probe by unrolling the sensor into the duct carefully to avoid kinking 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 BAPI Flexible Probe Bracket (BA/FPB - order separately) can be used to support the sensor and to avoid kinking the sensor.
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.
rev. 06/27/17
Fig 7: Averaging Sensor Horizontal Mount. Best for
Vertical Stratication.
Specications subject to change without notice.
Fig 8: Averaging Sensor Vertical Mount. Best for
Horizontal Stratication.
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Mounting Continued
Mounting Notes:
Note 1
Be sure not to drill into the weatherproof enclosures (BB, BB2, WP, EU, EUO) which will violate the
This Panel is Intentionally Left Blank
NEMA and/or the IP rating.
Duct Averaging Transmitters
BA/T#-A Temperature Transmitter
Installation & Operations
rev. 06/27/17
Note 2 Be sure to use caulk or Teon tape on all threaded openings 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 9-A: Junction Box or No-Box NB
Mounting Holes
Fig 9:
Junction Box or No-Box (NB)
Mounting Holes
Fig 9-B: Junction Box or No-Box NB
Duct Installation
Fig 10-A: BB2 Mounting Holes
Fig 10: BAPI-Box 2 (BB2)
Enclosure Mounting Holes
Fig 10-B: BB2 Duct Installation
Fig 11-A: BAPI-Box BB Enclosure Mounting Holes Rotate 90° for Horizontal Mounting
Fig 11: BAPI-Box (BB) Enclosure
Mounting Holes, Rotate 90° for
Horizontal Mounting
Fig 11-B: BAPI-Box BB Duct Installation
Fig 12- A:
EU or EUO Enclosure Mounting Holes
Fig 12: Weather Tight (EU or
EUO) Enclosure Mounting Holes
Specications subject to change without notice.
Fig 13: Weatherproof (WP)
Enclosure Mounting Holes
Fig 13-B:
Weatherproof Box WB
Duct installation
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Duct Averaging Transmitters
BA/T#-A Temperature Transmitter
Installation & Operations
20914_ins_DuctAvgFlex_Active
Wiring & 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 high or low voltage AC power wiring. BAPI’s tests show that inaccurate signal levels are possible when AC power wiring is present in the same conduit as the sensor wires.
rev. 06/27/17
Fig. 14: Typical RTD 4 to 20 mA Transmitter with Flying Leads
Fig. 16: Typical Thermistor 4 to 20mA Transmitter
Fig. 15: Typical RTD 4 to 20mA Transmitter with Terminals
Fig. 17: Typical Thermistor Voltage Transmitter
Diagnostics
Possible Problems: Possible Solutions:
Unit will not operate. - Measure the power supply voltage by placing a voltmeter across the transmitter’s (+) and
- Check if the RTD wires are physically open or shorted together and are terminated to the
- Measure the physical temperature at the temperature sensor’s location using an accurate
(-) terminal. Make sure that it matches the drawings above and power requirements in the specications.
transmitter.
temperature standard. Disconnect the temperature sensor wires and measure the temperature sensor’s resistance with an ohmmeter. Compare the temperature sensor’s resistance to the appropriate temperature sensor table on the BAPI website.
• The reading is incorrect in the controller.
- For a 4-20mA current transmitter measure the transmitter current by placing an ammeter
Voltage Temperature Equation
T = TLow + (V x TSpan) VSpan T = Temperature at sensor TLow = Low temperature of span THigh = High temperature of span TSpan = THigh - TLow VLow = Low transmitter voltage usually=(0, 1 or 2v) VHigh = High transmitter voltage usually=(5 or 10v) VSpan = VHigh - VLow V = Signal reading in volts
- Determine if the input is set up correctly in the controllers and BAS software.
in series with the controller input. The current should read according to the “4-20mA Temperature Equation” shown below.
- For a voltage transmitter, measure the signal with a volt meter (Orange or Orange/Black to Black). The signal should read according to the “Voltage Temperature Equation” shown below.
4-20mA Temperature Equation
T = TLow + (A -4) x (TSpan) 16 T = Temperature at sensor TLow = Low temperature of span THigh = High temperature of span TSpan = THigh - TLow A = Signal reading in mA
Specications subject to change without notice.
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Specications
RTD Transmitter
Power Required: 7 to 40VDC Transmitter Output: 4 to 20mA, 850Ω@24VDC Output Wiring: 2 wire loop Output Limits: <1mA (short), <22.35mA (open) Span: Zero:
Zero & Span Adjust:
Min. 30ºF (17ºC), Max 1000ºF, (555ºC) Min. -148°F (-100°C), Max 900ºF (482ºC)
10% of span Accuracy: ±0.065% of span Linearity: ±0.125% of span
Power Output Shift:
±0.009% of span RTD Sensor: 2 wire Platinum (Pt), 385 curve
Transmitter Ambient:
-4 to 158ºF(-20 to 70ºC)
0 to 95% RH, Non-condensing
Thermistor Transmitter
Supply Voltage:
10 to 35 VDC 0 to 5 VDC or 4 to 20 mA Outputs 15 to 35 VDC 0 to 10 VDC Output 12 to 24 VAC 0 to 5 VDC Outputs 15 to 24 VAC 0 to 10 VDC Output Transmitter Output 4 to 20mA, 700Ω@24VDC 0 to 5VDC, 0 to 10VDC, 10KΩ min Output wiring 2 & 3 wire (see Wiring detail) Transmitter Limits -40ºF to 185ºF,(-40ºC to 85ºC) Accuracy ±1.015ºC, from (0 to 65ºC) Linearity ±0.065ºC, from (0 to 65ºC) Resolution Span/1024 Thermistor Sensor 10K-2 Thermistor,10KΩ @77ºF Transmitter Ambient 32 to 158ºF, (0º to 70ºC) 0 to 95% RH, Noncondensing Thermistor: 10K-2, Thermal resistor Sensor Probe: 8 feet 4 Thermistors 12 feet 4 Thermistors 24 feet 9 Thermistors Accuracy (Std) ±0.36ºF, (±0.2ºC) Accuracy (High) ±0.18ºF, (±0.1ºC), [XP] option Stability < 0.036ºF/Year, (<0.02ºC/Year) Heat Dissipation 2.7 mW/ºC Probe Range -40º to 221ºF (-40º to 105ºC)
Wire Colors: Standard: Yellow/Yellow (no polarity) High Acc. [XP]: Yellow/Yellow (no polarity)
RTD: Resistance Temp Device (Continuous) Platinum (Pt) 100Ω and 1KΩ @0ºC, 385 curve, Pt Accuracy (Std) 0.12% @Ref, or ±0.55ºF, (±0.3ºC) Pt Accuracy (High) 0.06% @Ref, or ±0.277ºF, (±0.15ºC), [A]option
Pt Stability ±0.25ºF, (±0.14ºC) Pt Self Heating 0.4 ºC/mW @0ºC Pt Probe Range -40º to 221ºF, (-40 to 105ºC) Wire Colors:
General color code (other colors possible) 1KΩ, Class B Orange/Orange (no polarity) 1KΩ, Class A Orange/White (no polarity) 100Ω, Class B Red/Red (no polarity) 100Ω, Class A Red/Red-w/black stripe (no polarity)
Duct Averaging Transmitters
BA/T#-A Temperature Transmitter
Installation & Operations
rev. 06/27/17
Sensitivity: Approximate @ 32ºF (0ºC) Thermistor Non-linier (see www.bapihvac.com, click “Sensor Specs”)
RTD (Pt) 3.85Ω/ºC for 1KΩ RTD
0.385Ω/ºC for 100Ω RTD
Lead wire 22awg stranded
Insulation Etched Teon, Plenum rated
Probe Flexible Aluminum tube, 0.19”OD
Probe Length
Duct gasket
Mounting Extension tabs (ears), 3/16” holes
Enclosure Types: (Part number designator in bold)
J-Box: -JB, w/ eight ½” knock-outs Weatherproof: -WP, w/ two ½” FNPT entries, (Bell box) BAPI-Box: -BB, w/ four ½” NPSM & one ½” drill-out BAPI-Box 2: Weather Tight: -EU, EUO, w/ two ½” knock-outs
Enclosure Ratings: (Part number designator in bold) J-Box: -JB, NEMA 1 Weatherproof: -WP, NEMA 3R, IP14 BAPI-Box: -BB, NEMA 4, IP66, UV Rated BAPI-Box 2: -BB2, NEMA 4, IP66, UV Rated Weather Tight: -EU, NEMA 4, IP66 Weather Tight: -EUO, NEMA 4, IP66, UV rated
Enclosure Material: (Part number designator in bold) J-Box: -JB, UL94H-B Weatherproof: -WP, Cast Aluminum, UV rated BAPI-Box: -BB, Polycarbonate, UL94V-0, UV rated BAPI-Box 2: -BB2, Polycarbonate, UL94V-0, UV rated Weather Tight: -EU, ABS Plastic, UL94V-0 Weather Tight:
Ambient (Encl.) 0 to 100% RH, Non-condensing J-Box -JB, -40ºF to 212ºF, (-40º to 100ºC) Weatherproof -WP, -40ºF to 212ºF, (-40º to 100ºC) BAPI-Box -BB, -40ºF to 185ºF, (-40º to 85ºC) BAPI-Box 2 -BB2, -40ºF to 185ºF, (-40º to 85ºC) Weather Tight -EUO, EU, -40ºF to 185ºF, (-40º to 85ºC)
Agency RoHS PT=DIN43760, IEC Pub 751-1983, JIS C1604-1989
8’, 12’, 24’ per order
1/4” Closed cell foam (impervious to mold)
-BB2, w/ three ½” NPSM & three ½” drill-outs
-EUO, ASA (Geloy) Plastic, UL94V-0, UV rated
Specications subject to change without notice.
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