MSA SUPREMATouch MCP 20, Руководство по эксплуатации

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Calibration
GB
SUPREMATouch
1-Man Calibration
For a one-man calibration, the person must perform the following steps:
(1) Select Maintain/Calibration/Standard menu.
(2) Select input to be calibrated in “Measuring Point” field
(3) Enter gas concentration in Zero Gas field:
a) Enter the concentration of the test gas in the zero gas (usually 0%), not the concentration
of the zero gas.
(4) Enter test gas concentration in Test Gas field.
(5) If test gas used is different from reference gas entered in the Setup/Inputs&Outputs/
Measuring points menu, change the entry in field Test Gas of the Calibration submenu.
(6) Start calibration with Start 1-Man button.
a) Confirm messages immediately shown on the screen.
(7) Go to the sensor in the field.
(8) Supply zero gas via test adapter to the sensor assigned to the selected measuring point for
a sufficient period of time (duration and flow rate according to sensor operating and mainte-
nance instructions).
(9) Stop zero gas supply and supply test for a sufficient period of time.
(10) Stop test gas supply and return to the SUPREMA.
The measurement values taken over during the calibration process is shown in the NEW line.
(11) Check the measuring values taken over and shown on the display.
If plausible, complete the calibration by pressing the “End” button; otherwise cancel the cali-
bration by pressing the “Cancel” button.
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.
If the preadjustment was correct, the ACTUAL VALUES for the zero point will be approx-
imately in the range of 350 mV–450 mV. The signal voltage shown is calculated
according to the formula: Signal = C / 100 * 1600 mV + 400 mV (for sensors with a linear
output signal), where C is the concentration of the test gas in % of the measuring range.
The tolerance is approximately equal to the signal value in mV ± 100 mV.
If the preadjustment was correct, the ACTUAL VALUES for the zero point will be approx-
imately in the range of 350 mV–450 mV. The signal voltage shown is calculated
according to the formula: Signal = C / 100 * 1600 mV + 400 mV (for sensors with a linear
output signal), where C is the concentration of the test gas in % of the measuring range.
The tolerance is approximately equal to the signal value in mV ± 100 mV.