BAPI BAPI-Stat 3 Room VOC Sensor Catalog Page
VOC Room Sensor in the BAPI-Stat 3 Enclosure with
27018_ins_voc_room
Identication and Overview
Humans exhale Volatile Organic Compounds (VOCs) as well
as CO
therefore it is as good an indicator of space occupancy as a CO
sensor.
The BAPI Sensor is different from other VOC sensors because
it has been optimized for Demand Controlled Ventilation (DCV).
Using a calibration algorithm, the sensor value is converted to
an output with a high correlation to a CO
use ASHRAE’s occupancy-based VRP schedule to ventilate.
(More information on this correlated output is available on our
website at www.bapihvac.com)
The sensor also picks up VOCs from other sources such as
building materials, perfumes, colognes and furniture off-gassing.
Using this sensor to ventilate is a way of achieving true indoor
air quality and not just CO
The unit is available as a VOC sensor alone or in combination
with temperature and humidity. The optional display alternates
between the measured values and is eld adjustable between
°F and °C. An optional three color LED indicates a “VOC Level”
of Good, Fair or Poor.
. The BAPI sensor is able to measure these VOCs,
2
level. This lets you
2
dilution.
2
Common Ground Conguration
Installation and Operating Instructions
rev. 06/05/18
2
Optional
3-Color LED
Fig 1: BAPI-Stat 3 Room VOC Sensor
with Optional 3-Color LED
Specications
Power: (No AC Power)
0 to 5 VDC Output Units:
9 to 35 VDC @ 50 mA Max (9 to 15 VDC recommended)
0 to 10 VDC Output Units:
15 to 35 VDC @ 50mA Max (15 VDC recommended)
Sensing Elements:
Humidity: Capacitive Polymer, ±2% RH Accuracy
VOCs: Micro-machined Metal Oxide
Temp Sensor: Thermistor, RTD or Semiconductor
Mounting: 2”x4” J-Box or drywall mount – screws provided
VOC Detection Range: 0 to 2,000 CO2 PPM equivalent
Response Time: Less Than 60 Sec. (after Start-Up Time)
Start-Up Time: 15 minutes
Operating Environment:
32 to 122°F (0 to 50°C)
0 to 95% RH non-condensing
LCD Display:
Main Display: 0.76” 4-digit Numeric (Numeric Values)
Minor Display: 0.34” 3-digit Alpha-Numeric (PPM, %RH, °F, °C)
Occupied/Unoccupied BAPI Man Icon: (Blk=Occupied)
Note: The VOC contaminant output (CO2/VOC terminal on the circuit card) is scaled for 0 to 2,000ppm equivalent CO2
for use in an ASHRAE Standard 62.1 Demand Control Ventilation algorithm. The display shows contamination to an
equivalent 5,000ppm CO2. This allows additional troubleshooting for a building manager to determine if there is a very
large VOC contamination when the transmitted output is at its maximum value
Measurement Offsets (eld adjustable)
±5° (F or C) in 0.1° increments
±5% RH in 0.1% RH increments
±5% Contaminants in 0.1% increments
±100 ppp CO2 Equivalent Contaminants in 2 ppm incre-
ments
Analog Outputs
(0 to 5, 0 to 10 or 2 to 10VDC [%RH only], >10KΩ impedance)
VOC Contaminants: 0 to 2,000 CO2 PPM equivalent
%RH: 0 to 100% or 35 to 70% RH
Override Output:
Contact: SPST
Sensor: Shorts out direct Temperature sensor (Temp)
Setpoint: Contact in parallel, resistive setpoint only
LED CO2 Equivalent Level Indicator:
Good, Green < 1,000 PPM
Fair, Yellow = 1,000 to 1,500 PPM
Poor, Red > 1,500 PPM
Material: ABS Plastic, Material Rated UL94V-0
Certications: RoHS
Warranty Period: 5 years from manufacture date
Specications subject to change without notice.
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VOC Room Sensor in the BAPI-Stat 3 Enclosure with
Common Ground Conguration
Installation and Operating Instructions
27018_ins_voc_room
Mounting
Mounting hardware is provided for both junction box and drywall
installation (junction box installation shown).
Note: Screw the 1/16” Allen lock-down screw into the base to open the
case. There is less chance of losing the screw this way. Back out the
lock-down screw to secure the cover.
Junction Box
1. Pull the wire through the wall and out of the junction box, leaving
about six inches free.
2. Pull the wire through the hole in the base plate.
3. Secure the plate to the box using the #6-32 x 5/8 inch mounting
screws provided.
4. Terminate the unit according to the guidelines in the Termination
section. (page 3)
5. Mold the foam on the unit’s base to the wire bundle to prevent
drafts. (see note below)
6. Attach Cover by latching it to the top of the base, rotating the cover
down and snapping it into place.
7. Secure the cover by backing out the lock-down screw using a
1/16” Allen wrench until it is ush with the bottom of the cover.
Fig 2: Mounting to a Junction Box
Drywall Mounting
1. Place the base plate against the wall where you want to mount the sensor.
2. Using a pencil, mark out the two mounting holes and the area where the wires will come through the wall.
3. Drill two 3/16” holes in the center of each marked mounting hole, DO NOT punch the holes or the drywall
anchors will not hold. Insert a drywall anchor into each hole.
4. Drill one 1/2” hole in the middle of the marked wiring area.
5. Pull the wire through the wall and out of the 1/2” hole, leaving about six inches free.
6. Pull the wire through the hole in the base plate.
7. Secure the base to the drywall anchors using the #6 x 1 inch mounting screws provided.
8. Terminate the unit according to the guidelines in the Termination section. (page 3)
9. Mold the foam on the unit’s base to the wire bundle to prevent drafts. (see note below)
10. Attach cover by latching it to the top of the base, rotating the cover down and snapping it into place.
11. Secure the cover by backing out the lock-down screw using a 1/16” Allen wrench until it is ush with the bottom
of the cover.
rev. 06/05/18
NOTE: In any wall-mount application, the wall temperature and the temperature of the air within the wall cavity
can cause erroneous readings. The mixing of room air and air from within the wall cavity can lead to condensation,
erroneous readings and sensor failure. To prevent these conditions, BAPI recommends sealing the conduit leading
to the junction box, lling the junction box with berglass insulation or sealing the wall cavity.
Specications subject to change without notice.
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VOC Room Sensor in the BAPI-Stat 3 Enclosure with
Sensor Type Low Temp High Temp
10K-3(11K) Thermistor 7.32K (43.7°F) 3.65K (105.2°F)
Common Ground Conguration
Installation and Operating Instructions
27018_ins_voc_room
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 class 1, 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. If you are experiencing any of these difculties, please contact your BAPI representative.
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 void the warranty.
Terminal Function
OVR ..................Override Output (Dry Contact Switch). When Override
switch is pushed this terminal is connected to GND.
SET
...................Setpoint output. Referenced to ground.
...................External occupied LCD indicator is activated by logic
EXT
LOW or ground at this terminal.
TP+ & TP-
........Temperature Sensor Output (Resistive Output).
When a jumper is on J16, TP- is connected to the
GND terminal. When the jumper is off of J16, the
temperature sensor is oating.
(Semiconductor TP+ = +, TP- = -)
CO2/VOC
.........Voltage output VOC Signal (0 to 2,000 ppm)
referenced to GND
HUM
.................Voltage output Humidity Signal referenced to the GND
terminal
GND
..................To controller Ground [GND or Common]
.................Power, referenced to GND
PWR
9 to 35 VDC @ 50 mA Max
(9 to 24VDC recommended) for 0 to 5 VDC Outputs
15 to 35 VDC @ 50mA Max
(15 to 24VDC recommended) for 0 to 10 VDC Outputs
rev. 06/05/18
Note: For proper operation, the
Fig 3: Circuit Board
Optional Test and Balance Switch (SW1)
jumper on PRG connector of J19
must be connected by only one leg.
Specications subject to change without notice.
Note: Unit is not ready for
operation until the 15 minute
start-up time has elapsed.
1000 RTD 1.02K (41.2°F) 1.15K (101.5°F)
3000
Thermistor 7.87K (39.8°F) 1.50K (106.8°F)
10K-2 Thermistor 30.1K
10K-3 Thermistor 26.7K
(34.9°F) 4.75K (109.1°F)
(35.9°F) 5.11K (108.4°F)
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