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2.6 Peak Flow Reset
To reset the peak flow before taking another reading, press the ‘Reset’button (Item 5, Section
1.2). The peak flow will immediately reset to zero, ready for the next reading to be taken.
2.7 Data logging (Advanced unit only)
The optional data logging facility records flow results and surge data on the NFM3’s internal
memory. Recorded data is downloaded from the NFM3 via USB connection for direct import
into the included data viewing and reporting software.
There are two modes for data logging:
Mode 1: Quick screen print
Mode 2: Logs gas over a set time, taking a gas reading every 20 milliseconds
2.7.1 Mode 1
1. Switch ‘On’ the NFM3 Advanced unit.
2. By default, the NFM3 is already in ‘Mode 1’. This provides a quick screen print of the
results.
3. Once the gas flow has been read, the screen will display the average gas flow, peak
flow and gas consumed. To log this on the NFM3’s internal memory, press the ‘Print’
button.
2.7.2 Mode 2
1. To set up the data logging function over a specific period, press the ‘Reset’ button until
the setup screen is displayed.
