TS4000
41
To Run Calibration Mode for All Sensors Except O
2
1. Apply and hold the magnet over the GM logo on the cover of the Base Unit. Wait until
“
AC
” appears in the display window. Remove the magnet to select “
AC
”. The unit is
now in Calibration Mode.
2. The display flashes the Remaining Sensor Life. The user can choose to reset or not to
reset the sensor life at this point. Ensure that the sensor is exposed to clean air during
this time. For more information about Remaining Sensor Life, refer to Section 4.10.
3. The Remaining Sensor Life flashes while the unit is being set to zero. Once the unit
has been set to zero “
gAS
” appears in the display window.
4. Apply the calibration gas concentration to the sensor (50% FS of the required range of
detected gas). The display changes from “
gAS
” (apply gas) to “
CP
” (Calibration in
Progress) indicating that the sensor is responding to the calibration gas. While the unit
is reading the gas concentration, the menu is disabled.
5. After three to five minutes, the display changes from “
CP
” to “
CC
” indicating that the
calibration is complete.
6. Remove the gas and wait for the unit to return to normal operation. The display may
indicate a few percent of FS and will eventually drop to “
0
”. If a unit time out occurs the
user receives a calibration fault.
The TS4000 is now calibrated and the sensor calibration constants are stored in the non-
volatile memory (EEPROM).
To Run Calibration Mode for O
2
1. Apply and hold the magnet over the GM logo on the cover of the Base Unit. Wait until
“
AC
” appears in the display window. Remove the magnet to select “
AC
”. The unit is
now in Calibration Mode.
2. The display flashes the Remaining Sensor Life. The user can choose to reset or not to
reset the sensor life at this point. Ensure that the sensor is exposed to clean air during
this time. For more information about Remaining Sensor Life, refer to Section 4.10.
3. After three to five minutes, the unit will complete calibration, return to normal operation,
and display the Oxygen gas reading.
4.9.1.1 Ending
Calibration
Calibration Mode can be ended after the zeroing stage and while the unit is waiting for gas to
be applied. Applying the magnet over the GM logo, after the unit has been zeroed and prior to
gas being applied will terminate the Calibration Mode and save the zero settings.
4.9.1.2 Aborting
Calibration
Calibration can be aborted only during the zeroing stage before “
gAS
” is displayed.
To Abort Calibration
1. Apply and remove the magnet once to reset remaining sensor life. Apply and remove
the magnet once more to abort calibration.