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English–137M7122 DPI 705E / DPI 705E IS User Manual | 7
4. Press the key again to see the Minimum Pressure reading.
Note:
• The down-arrow on the display indicates that the current reading is the minimum
pressure reading.
• The dash above the down arrow indicates that the reading is negative. The display
below shows -16 mbar.
5. To reset the minimum pressure reading, press and hold the key until a beep sound is
heard (if audio is enabled).
6. The reading will then reset, and the unit will immediately start measuring again, but is still
only showing the minimum reading on the display - this is effectively negative Peak Hold
mode.
7. Press the key to exit minimum display mode.
2.3 Leak Test
This feature is used to determine whether there is a leak in the connected system by recording
the pressure change over a period of time. Leak test can also be used with the RTD - INTERFACE
to record temperature change over time.
To perform a leak test, follow the sequence of steps below:
1. Ensure the display is on the sensor reading screen.
2. Press the key 3 times.
3. A clock symbol appears in the top left corner of the display. The leak test time appears with
default at 60 seconds.
4. To change the timer value, press the key, the display will cycle 60, 120, 300 seconds.