INFICON 2020ComboPRO Portable Photoionization Detector - Manual (Page 64)

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To turn on the pump:
1. Press the MENU soft key, “Unit Setup”, press SELECT, “Pump”, press
SELECT, “On”, then press SELECT.
To turn off the pump:
2. Press the MENU soft key, “Unit Setup”, press SELECT, “Pump”, press
SELECT, “Off”, then press SELECT.
Backlight
The backlight function is used to switch the backlighting on and off when there is
insufficient light to read the display.
To switch the backlighting on and off:
1. Press the MENU soft key and select “Unit Setup”.
2. Select BACKLIGHT and then press the SELECT soft key. Press the
DOWN ARROW soft key to either turn the backlight on or off.
3. Press SELECT soft key to return to the main display.
To extend the operating life of the battery pack, turn the backlighting off when it is
not required.
User Mode
User mode selects one of the three logging modes. The three logging modes are
Logging Off, Tag and Interval mode.
Logging Off mode displays instantaneous readings only. The display is updated
continuously and readings are not datalogged.
Tag mode displays instantaneous readings. The user has the option to manually
store the instantaneous reading as either a background reading or a sample reading.
Interval mode displays the instantaneous reading, STEL, TWA and PEAK readings.
In interval mode, data is logged at a user selected interval value between 1 second
and 999 seconds.
Clock
The Clock function is used to set both the current date and time.