E Instruments 4400 - Page 64

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@IST01530EEJ 019175A0 190411
• Apply the gas to the instrument and regulate the cylinder output pressure so that the flow meter shows a
minimum flow (0.5 l/m) to ensure that the instrument is getting exactly the gas needed by its internal pump.
• The instrument measures the concentration of the applied gas; w ait at least 3 minutes for the measure to
stabilize. The reading is shown in the 'Measured' row.
• To initiate the recalibration, select the concentration of the applied gas (cylinder concentration) in the 'Applied'
row.
• Select 'Calibrate' in 'Action' row.
• Depress the ' ' key to save the new calibration.
Action calibrate
►Applied 1000.0 P
Measured 990.5
Measured 990.5 Measured 990.5
Measured 990.5 P
PP
P
Is 82.22 uA
Ia 10.17 uA
Status original
CO CALIBRATION
Action calibrate
►Applied 1022.0
Applied 1022.0 Applied 1022.0
Applied 1022.0 P
PP
P
Measured 990.5 P
Is 82.22 uA
Ia 10.17 uA
Status original
CO CALIBRATION
With keys set the cylinder concentration in the 'Applied'
row.
►Action calibrate
Action calibrateAction calibrate
Action calibrate
Applied 1022.0 P
Measured 990.5 P
Is 82.22 uA
Ia 10.17 uA
Status original
CO CALIBRATION
The recalibration result will be shown in the 'Status' row:
'CAL OK': sensor recalibrated successfully
'CAL ERROR': sensor not recalibrated due to:
- The gas was not correctly delivered to the
instrument.
- The applied gas concentration was not correctly
set in the 'Applied' row.
- The 3 minutes stabilization time was not
observed.
- The sensor might be damaged or exhausted and
needs to be replaced.
►Action calibrate
Applied 1022.0 P
Measured 990.5 P
Is 82.22 uA
Ia 10.17 uA
Status cal ok
Status cal okStatus cal ok
Status cal ok
CO CALIBRATION
It is always possible to bring back the original calibration w ith the action 'set original' and bring back the
last on-site calibration with 'set-user'.
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