MSA SUPREMATouch MCP 20, Руководство по эксплуатации

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90
Calibration
GB
SUPREMATouch
WARNING!
If the signal voltage exceeds 2000 mV or is too weak during the test gas supply, the calibration is
invalid. Under no circumstances may the calibration value be accepted. Check test gas concen-
tration and make sure it is being supplied correctly. It may be necessary to check and correct the
preadjustment of the measuring point.
(8) After tapping the Start button, enter the
required password or use the key switch.
“End Calibration” submenu appears.
Values of preceding calibration are shown
in line OLD.
Values of current calibration are shown
under NEW after the Store button has
been pressed. OLD is blank for first cali-
brations.
The field Signal= displays the current
measurement value of the measuring
point to be calibrated.
(9) After zero gas has been supplied for a
sufficient period of time–bar display
completely filled–confirm value with
Store
button. In one-man calibration mode, this
step is done automatically.
Value is now shown in CAL-ZERO.
(10) After person 1 confirms that the zero point
calibration has been completed success-
fully, cut off zero gas supply and start with
test gas supply.
Current measurement value of measuring point
to be calibrated is shown in
Sig: field.
(11) After test gas has been supplied for a suffi-
cient period of time–progress bar is
completely filled–confirm value with
Store
button. In one-man calibration mode, this
step is done automatically.
Value is shown in CAL-SPAN.
(12) Finish calibration of selected input with
End button.
Signals U
A
above 600 mV are not valid for
zero point calibration.
Signals U
A
below 600 mV are not valid for
span calibration.
(13) Select the next input in menu Start calibra-
tion , and repeat procedure.
(14) After person 1 confirms that sensitivity cali-
bration has been completed successfully,
shut off test gas supply and start zero gas
supply at next input to be calibrated.
Person 1 Person 2