BAPI CO2 Duct Installation & Operating Instructions
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:sales@bapihvac.com • Web:www.bapihvac.com
Specifications subject to change without notice.
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Installation & Operating Instructions
rev. 08/21/17
28173_ins_CO2_Duct
CO
2
Duct and Rough Service Sensor
The BAPI CO
2
Duct Sensor is an accurate and reliable way
of incorporating demand controlled ventilation. It measures
CO
2
in ranges of 0 to 2,000, 0 to 5,000, 0 to 10,000 and 0
to 50,000 ppm with a field selectable output of 0 to 5 or 0 to
10 VDC.
The Single Beam (ACD) unit has been optimized for
periodically unoccupied areas and features automatic
background calibration over a long time period to reduce
drift. The Dual Channel (DCD) “24/7” unit has been
optimized for continuously occupied areas and features a
3-point calibration process.
Barometric pressure changes from altitude or weather
can affect CO
2
sensors, even putting them outside of their
specified accuracy. The BAPI unit has a built-in Barometric
pressure sensor that continuously compensates the output
for accurate readings despite the weather or altitude.
The Duct unit samples duct air using an aspiration tube.
The Rough Service unit features a ventilated BAPI-Box and
is ideal for areas such as outdoor air plenums, equipment
rooms, attics, green houses and warehouses. Optional
indication of the CO
2
level as “Good, Fair or Poor” is
available as a 3-color LED for 0 to 2,000 ppm range units.
Identification and Overview
Fig. 1: Duct CO
2
Sensor
Three-color
LED
Fig. 2: Rough Service CO
2
Sensor
Specifications
Power:
12 to 24 VDC, 240mA
18 to 24 VAC, 12 VA Peak
CO
2
Sensing Elements:
Single Beam Non-Dispersive Infrared (NDIR)
or Dual Channel NDIR for “24/7” Model
Selectable Output:
0 to 5 VDC or 0 to 10 VDC
Termination: 3 Terminals, 16 to 22 AWG
Wiring: 2 Pair
Operating Environment:
32 to 122°F (0 to 50°C)
0 to 95%RH non-condensing
Enclosure Material:
Polycarbonate, UL94 V-O
CO
2
Detection Range:
0 to 2,000, 0 to 5,000, 0 to 10,000 and 0 to 50,000 ppm
Start-Up Time: 10 Minutes
Response Time:
Less Than 5 Minutes (after Start-Up Time)
CO
2
Accuracy:
(Automatic Background Calib. Single Channel Model)
400 to 1,250 ppm: ±30ppm or 3% of reading,
whichever is greater
1,250 to 2,000 ppm: ±5% of reading + 30ppm
CO
2
Accuracy:
(“24/7” Dual Channel Model)
75ppm or 10% of reading (whichever is greater)
CO
2
Drift Stability (DCD “24/7” Units):
<5% of full scale over life of product.
Optional 3-Color LED (0 to 2,000 ppm range only):
Good, Green < 1,000 PPM CO
2
Fair, Orange = 1,000 to 1,500 PPM CO
2
Poor, Red > 1,500 PPM CO
2
Certifications: RoHS
Warranty Period:
5 Years from manufacture date