MSA SUPREMA Touch, Инструкция по установке и обслуживанию, Страница: 84 / 309

MSA AUER
MSA
Maintenance and Service
SUPREMATouch 83
US
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Set the output current of the power source to 4 mA.
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Unlock the measure point in question in the “Setup/Measure Points” menu to allow a calibra-
tion.
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Select the “Maintain/Calibration” menu.
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Select the measure point to be calibrated in the “Measure Point” field.
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Enter 0 % of the measuring range in the field “Zero Gas” as the zero gas concentration.
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Enter 100 % of the measuring range in the field “Test Gas” as the test gas concentration.
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Begin the calibration with the “Start” button.
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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.
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The “End Calibration” submenu will appear.
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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.
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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”.
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Set the output current of the power source to 20 mA.
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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.
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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”.
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End the calibration of the selected measure point by actuating the "End" button
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Set the power source back to 4 mA and lock the measure point again.
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Cut the connection between the MAT module terminal and the power source and reconnect
the sensor.
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After allowing the sensor to recover sufficiently, unlock the measure point.
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In the beginning calibration menu, select the next measure point and repeat the procedure de-
scribed above.