MSA SUPREMATouch - Page 84

MSA AUER
MSA
Maintenance and Service
SUPREMATouch
83
US
- Set the output current of the power source to 4 mA.
- Unlock the measure point in question in the “Setup/Measure Points” menu to allow a calibra-
tion.
- Select the “Maintain/Calibration” menu.
- Select the measure point to be calibrated in the “Measure Point” field.
- Enter 0 % of the measuring range in the field “Zero Gas” as the zero gas concentration.
- Enter 100 % of the measuring range in the field “Test Gas” as the test gas concentration.
- Begin the calibration with the “Start” button.
- 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. For an input current of 4 mA, a value of 400 mV ± 10 mV should be displayed here.
In the field “Ux=” no value or ***** is displayed.
- If the value UA is within the tolerance range [400 mV ± 10 mV], confirm by actuating the "Store"
button. The value will be appear in the field “CAL-ZERO / mV”.
- Set the output current of the power source to 20 mA.
- The current measurement value UA of the measure point to be calibrated will appear in the
“Sig:” field. For an input current of 20 mA, a value of 2.000 mV ± 10 mV should appear here.
- If the value UA is within the tolerance range [2000 mV ± 10 mV], confirm by actuating the
"Store" button. The value will appear in the field “CAL-SPAN/ mV”.
- End the calibration of the selected measure point by actuating the "End" button
- Set the power source back to 4 mA and lock the measure point again.
- Cut the connection between the MAT module terminal and the power source and reconnect
the sensor.
- After allowing the sensor to recover sufficiently, unlock the measure point.
- In the beginning calibration menu, select the next measure point and repeat the procedure de-
scribed above.