10
Geonics Limited
Regardless of the test result (OK or FAILED) the readings will be saved on screen. The
program returns to Monitoring/Nulling menu after any key is pressed. Then the calibration
process can be repeated.
External QC Coil Calibration
The External QC coil calibration is described in detail in the EM61-MK2 Operating
Instructions.
The procedure for the instrument check using External QC coil calibration is very similar
to the one described above for Internal QC coil calibration. To start the calibration process
using External QC coil press key
E
. This action begins by performing the automatic nulling
which in this case is only in effect for the duration of the calibration process. It will not
affect EM61-MK2 readings. After the nulling is completed (less than 5 seconds) the External
QC coil Calibration screen is displayed.
This screen displays timer with elapsed seconds and EM61-MK2 readings. This display
lasts for 60 seconds. During this time please follow the instructions provided on the Allegro
screen.
Calibration can end in the following four ways:
The process can be stopped by ann operator at any time by pressing key <Esc>.
The calibration may end by time out (60 seconds) if QC coil button was not
pressed or this action did not activate QC coil. After pressing any key the program
returns to Monitoring/Nulling manu. To repeat External QC coil calibration please
press key
E
again.
The logger will determine if the instrument has passed test. If after activating the
QC coil, the program determines that the reading is inside the standard values
/- 10% tolerances then a message “CALIBRATION OK” will be
displayed.
Otherwise, if the program determines that the reading is outside of the test values
range the corresponding message “CALIBRATION FAILED” is displayed.
Regardless of the test result (OK or FAILED) the readings will be saved on screen. The
program returns to Monitoring/Nulling menu after any key is pressed. Then the calibration
process can be repeated by pressing key
E
.
Summary of Contents for EM61MK2A
Page 2: ......
