MSA SUPREMA Touch, Инструкция по установке и обслуживанию, Страница: 86 / 309

MSA AUER
MSA
Maintenance and Service
SUPREMATouch 85
US
Person 2:
-
Supply the zero gas via the test adapter to the sensor assigned to the selected input [duration
and flow rate as specified in the O&M instructions for the sensor].
Person 1:
-
After actuating the “Start” button, you will be asked for the password at the first measure point.
Enter the password or actuate the key switch.
-
The “End Calibration” submenu will appear.
-
The current measurement value UA of the measure point to be calibrated will appear in the
“Sig:” field. After the zero gas has been supplied for a sufficient period of time [the value re-
mains stable], confirm the value by actuating the "Store" button. The value will appear in the
field “CAL-ZERO/mV”.
Person 2:
-
After being informed by person 1 that the zero point calibration has been completed success-
fully, shut off the zero gas supply and start test gas supply.
Person 1:
-
The current measurement value UA of the measure point to be calibrated will appear in the
“Sig:” field. After the test gas has been supplied for a sufficient period of time [the value remains
stable], confirm the value by actuating the "Store" button. The value will appear in the he field
“CAL-SPAN / mV”.
-
Conclude the calibration of the selected measure point by actuating the "End" button.
-
Select the next measure point in the beginning calibration menu and repeat the procedure de-
scribed above.
Person 2:
-
After being informed by person 1 that the sensitivity calibration has been completed success-
fully, shut off the test gas supply and begin with the zero gas supply at the next measure point
to be calibrated.
Separate Zero Adjustment
If the primary calibration has already been completed, then it is possible to only adjust the zero in
the course of maintenance work. The appropriate span value is then processed by the
SUPREMATouch based on the data from the last calibration completed. The steps for zero ad-
justment are to be carried out as described in the previous section. After storage of the zero value
[„Store” button] the zero adjustment can be carried out by actuating the „End“ button. The following
confirmation dialog must be answered by entering <YES>.
NOTE: If the value is below the zero adjustment range, the separate zero setting is cancelled and
a warning displayed. Exceeding the calculated span value is also invalid and results in cancelling
of the separate zero setting. It is then recommended to carry out a complete calibration and if nec-
essary replace the sensor.
NOTE: After the separate zero setting, no SPAN value is shown in the calibration menu and in the
logbook for these settings.