INFICON DataFID Portable Flame Ionization Detector for Leak Detection and Repair (LDAR) - Manual (Page 72)

074-578-P1A 72
Multi-Point Calibration
In multi-point calibration mode, the DataFID can calibrate up to 5 leak definitions, plus zero. The
DataFID will walk the user through the calibration process. The first item to decide is how many
leak definitions will be required during the monitoring session. Once the number of leak
definitions is determined, the operator should enter the concentrations sequentially, starting with
the lowest concentration first.
1. Let the DataFID warm up for 20 minutes before calibration begins. This allows the FID
detector to achieve optimal operating temperature and to clear out any residual VOC’s that may
be in the detector.
2. After the DataFID has warmed up, simultaneously push the red CAL keys on the DataFID
display. This will start up the calibration process and the following screen will appear:
Cancel
3. Select Multipoint Calibration by pressing the two right hand red keys simultaneously and the
following screen will appear:
Cancel
Move the cursor up or down with the up or down arrow keys to select the number of span (leak
definition) points, then press select (two right hand red keys). In this example, 2 leak definitions
(spans) is used.
4. The following screen will appear:
>Multipoint Calibration
Methane Span
Propane Span
Hexane Span
Select
5 spans per calibration
>2 spans per calibration
3 spans per calibration
4 spans per calibration
Select
Connect to zero air
and open valve
Cancel Tare Next