Installation and Operating Instructions
CO2 Room Sensor in the BAPI-Stat 3 Enclosure
with Common Ground Conguration
Specications subject to change without notice.
26141_ins_room_CO2
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rev. 04/27/18
Fig. 1: BAPI-Stat 3 Room CO2 Sensor
The BAPI CO2 Sensor is an accurate and reliable way of incorporat-
ing demand controlled ventilation into a building’s HVAC strategy. It
measures the CO2 in a range of 0 to 2,000 ppm with a eld selectable
output of 0 to 5 or 0 to 10 VDC.
The non-dispersive infrared (NDIR) technology has been optimized
to reduce drift. The sensor is also altitude compensated for long-
term accuracy and stability. Changing air pressure, due to altitude
or weather patterns, can change the output of most CO2 sensors by
as much as 17%. The BAPI unit has a built-in barometric sensor that
continuously compensates the output for accurate readings despite
inclement weather or the altitude of the installation.
The unit can be ordered as CO2 alone, or with optional temperature
sensing, temperature setpoint, occupant override and humidity sens-
ing. The large format display is easy to read and alternates between
the measured values (CO2, Temperature or Humidity). The display is
also eld adjustable between °F or °C and all the displayed values
may be turned on or off by an HVAC technician.
Optional indication of the CO2 level as “Good, Fair or Poor” is avail-
able as a three-color LED on the unit or as an arrow on the display.
Identication and Overview
Specications
Power for 0 to 5 VDC Outputs:
9 to 35 VDC @ 240mA (9 to 24 VDC recommended)
Power for 0 to 10 VDC Outputs:
15 to 35 VDC @ 240mA (15 to 24 VDC recommended)
Sensing Elements:
CO2 – Single Beam Non-Dispersive Infrared (NDIR)
or Dual Channel NDIR for “24/7” Model
Humidity – Capacitive Polymer ±2% RH Accuracy
Temperature Sensor:
Thermistor, RTD or Semiconductor
Operating Environment:
32 to 122°F (0 to 50°C)
0 to 95%, RH non-condensing
Material ABS Plastic, Material Rated UL94V-O
CO2 Detection Range: 0 – 2000 ppm
Start-Up Time: <2 Minutes
Response Time:
<2 Minutes for 90% step change typical (after start-up)
Mounting: 2”x4” J-Box or drywall – screws provided
Override Output:
Contact ....SPST, 24V AC/DC, 0.5A max
Sensor .....Shorts Out direct temperature sensor
Setpoint ...Contact in parallel, resistive setpoint only
LCD Display:
Main Display: 0.76” 4-digit Numeric Values
Minor Display: 0.34” 3-digit Alpha-Numeric
(PPM, %RH, °F, °C)
Occupancy BAPI Man Icon: (Blk=Occupied)
Measurement Offsets: (Field Adjustable)
±5° (F or C) in 0.1° increments
±5% RH in 0.1% RH increments
CO2 Accuracy:
(Single Channel Automatic Background Calibration model)
400 to 1,250 ppm: ±30ppm or 3% of reading,
whichever is greater
1,250 to 2,000 ppm: ±5% of reading + 30ppm
CO2 Accuracy:
(“24/7” Dual Channel Model)
75ppm or 10% of reading (whichever is greater)
CO
2
Drift Stability (Dual Channel DCD “24/7” Units):
<5% of full scale over life of product.
LED CO2 Level Indicator:
Good, Green < 1,000 PPM
Fair, Orange = 1,000 to 1,500 PPM
Poor, Red > 1,500 PPM
Certications: RoHS
Warranty Period: 5 Years from manufacture date
