Calibration Process: 1-Point Span - Bacharach IEQ Chek Operation Manual

Step 3-Point Span Procedure
Enter the security code correctly and the LCD indicates CAL. Using the
3. DOWN ARROW scroll to SPAN and push the MENU button. The next
menu indicates installed gas sensors.
The LCD indicates the list of installed sensors. Use the ARROW DOWN
4. button to scroll to the CO
MENU button again.
The LCD moves to the SPAN menu and indicates ENTER 1
VALUE. The cursor flashes over the first of four digits indicating the user
5. must set the correct 1
value must match the gas concentration on the cylinder of span gas for
that specific sensor, and then press the MENU button.
The LCD indicates APPLY GAS NOW.... A scroll bar at the bottom of the
LCD indicates the progress on a scale of 0 to 100% as the instrument
6. waits for sensor to stabilize to the span gas. Then the LCD indicates
SPANNING CO2. Once again the scroll bar at the bottom of the LCD
indicates the span progress on a scale of 0 to 100%.
Upon completion, the LCD indicates ENTER 2
flashes over the first of four digits indicating the user must set the correct
nd
7. 2 span gas value (approximately 2000 ppm). This value must match the
gas concentration on the cylinder of span gas for that specific sensor, and
then press the MENU button.
The LCD indicates APPLY GAS NOW.... A scroll bar at the bottom of the
LCD indicates the progress on a scale of 0 to 100% as the instrument
waits for sensor to stabilize to the span gas. Then the LCD indicates
SPANNING CO2. Once again the scroll bar at the bottom of the LCD
indicates the span progress on a scale of 0 to 100%. Upon completion, the
8.
LCD indicates ENTER 3
four digits indicating the user must set the correct 3rd span gas value
(approximately 4000 ppm). This value must match the gas concentration
on the cylinder of span gas for that specific sensor. Then, press the
MENU button.
The LCD indicates APPLY GAS NOW.... A scroll bar at the bottom of the
LCD indicates the progress on a scale of 0 to 100% as the instrument
waits for sensor to stabilize to the span gas. Then the LCD indicates
9. SPANNING CO2. Once again the scroll bar at the bottom of the LCD
indicates the span progress on a scale of 0 to 100%. Upon completion, the
LCD indicates SPAN HAS BEEN UPDATED and returns to the CAL
menu.
NOTE: If for any reason the user doesn't want all three points' calibration, any of the
points can be overridden by pressing and holding the ARROW UP button until the
next screen appears.

6.5. Calibration Process: 1-Point Span

NOTE: This procedure is for all sensors except CO
1509-9001 Rev 1
IEQ Chek
sensor (or combustible sensor) and press the
2
st
span gas value (approximately 1000 ppm). This
rd
GAS VALUE and cursor flashes over the first of
.
2
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Operation Manual
nd
GAS VALUE and cursor
ST
GAS
21