PerkinElmer Photovac MicroFID, Руководство пользователя

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Detailed Operation
concentrations between 10 and 50,000 ppm (methane
equivalents).
5. You will now be prompted to connect a supply of zero air.
You can use ambient air, a charcoal filter (Part No.
MX396021, MX396022) to clean ambient air or, for best
results, use a clean sampling bag filled with zero grade air.
6. After MicroFID has set its zero point, you then enter the
concentration of the calibration gas and then connect the
calibration gas. MicroFID sets its sensitivity for the
specified Cal Memory. The span gas concentration,
response factor and alarm level entered here are specific to
the selected Cal Memory only.
When the calibration is completed it is automatically stored in the
selected Cal Memory.
7. Press the ALARM key and enter the alarm level for the
selected Cal Memory.
8. Repeat this procedure for each Cal Memory you need.
When calibrating MicroFID, ensure the instrument is level. If
MicroFID is tilted side to side, gravity will affect the flame height
and cause erroneous readings
Whenever the instrument is calibrated, MicroFID updates the
selected Cal Memory only. Each Cal Memory must be calibrated at
least once a day. Frequency of calibration will depend on ambient
conditions and instrument response. If ambient conditions change or
the response has drifted, a calibration must be performed for each
Cal Memory to ensure reliable operation.
High Sensitivity Operation
MicroFID can be used as a high sensitivity leak detector. In high
sensitivity operation, MicroFID does not read in ppm units
equivalent to the calibration gas, but displays a reading proportional
to the total concentration of ionizable gases and vapors detected.
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