Installation and Operating Instructions
CO
2
Room Sensor in the BAPI-Stat 3 Enclosure
with Common Ground Configuration
Specifications subject to change without notice.
26141_ins_room_CO2
5 of 6
rev. 04/27/18
BAPI’s CO
2
room sensor comes calibrated and ready to operate. In some
installations the sensor may not match local instrumentation. The technician
adjustment procedure allows °F or °C display units, temperature or humidity
offsets or display information to be changed at any time.
Removing Ground from Temperature Sensor
Some installations may experience erratic temperature readings. A possible
remedy may be to float the temperature sensor as shown in Figs 7 and 8. Run
wires directly from TP+ and TP- to the controller’s analog input. The VOC/CO
2
and RH jumpers are omitted for clarity.
°F or °C Display Units
Figs 9 and figure 10 show the jumper positions for displayed values of Celsius
or Fahrenheit degrees. The jumpers on pins PRG and BNK are omitted for
clarity.
Parameter Offsets & Display Information
Figs 11 and 12 show how to place the unit into field setup mode. Take the
jumper from the BNK terminals and place it on the PRG terminals. The F/C
jumper is omitted for clarity.
The major display should read P1 and the minor display should read DSP.
Use the UP/DN buttons (See Fig 13) to select the desired page.
Press and release the ENT button to select the desired page.
Use the UP/DN buttons to adjust the desired value
Press and release the ENT button to save the change and return to the page
display.
Adjust another page or place the jumper into normal operation.
Fig. 7:
Temp.
Sensor
Grounded
Fig. 8:
Temp.
Sensor
Floating
Fig. 9:
°F
Fig. 10:
°C
Fig. 11:
Normal
Operation
Fig. 12:
Programming
Setup
Optional Technician Adjustments
Fig. 13:
Calibration
Buttons
Main
Minor
Item Display
Action
1
Temperature Only
2
% RH Only
3
CO
2
Only
4
Temperature and %RH (10 second rotation)
5
Temperature and CO
2
(10 second rotation)
6
%RH and CO
2
(10 second rotation)
7
Temperature, %RH and CO
2
(10 second rotation)
8
Setpoint Display Only
Temperature
Offset
P2
TMP
%RH Offset
P3
%RH
CO
2
Offset
P4
CO2
Altitude
P5
ALT
±5° in 0.1° increments
±5% RH in 0.1% RH increments
±100 ppm in 1 ppm increments
Effective Pressure Altitude (display only, no adjustment)
Table 4: Parameter Offsets & Display Information
Parameter
Display
Adjustment
Display Options
P1
DSP
