B5C Operation And Maintenance Manual
85950-301-000 RA
Aug. 05, 2016
15
3.5 Menu “2_ZERO CAL”
The B5C is calibrated using a two-point calibration process. First, use a “Zero Gas”, then
use a “CAL Gas” containing a known concentration of a standard reference gas, to set the
second point of reference.
3.5.1
Equipment Required
A cylinder of Zero Gas, (clean air or nitrogen).
A cylinder of Cal Gas
Flow Limiting Regulator(s)
0.2 to 1.0 lpm
Tubing
3.5.2
Zeroing Calibration Procedure
“2_ ZERO CAL:”
Press key [F3] and the device will show the calibration notice and then ask if you
want to continue. The middle line will display the current concentration.
Apply the Zero Gas.
Wait for about 3 minutes or until the reading is stable.
Press key [F3] to confirm Zeroing Cal.
When the device is in Zeroing CAL, it will take 3 seconds to 20 seconds to
complete.
When the zeroing CAL operation is over, the device will display “Accepted” and
return to “2_ZERO CAL”.
Make sure there is no Cal Error displayed. If Cal Error is reported, repeat the
procedures above. If the Cal Error is still showed up, the sensor may be expired.
Remove the gas.
Exit the menu to Monitoring Mode.
2_ ZERO CAL
CONTINUE?
XXPPM
