Section 2 Detective+Tetra Run mode
The date, current time, and the time elapsed since instrument switch
on is displayed.
Serial number and calibration due date is displayed.
Alarm 1 levels are shown for all sensors.
Short-term exposure levels are displayed for toxic sensors.
Long-term exposure levels are displayed for toxic sensors.
Currently selected user and site are displayed.
3.8 Switching Off
Before turning the unit OFF, purge it with air, until all channels read zero and
Oxygen reads 20.9%, after this turn it of. The DETECTIVE+ is turned OFF by
simultaneously pressing the ON button and the UNMARKED button simultane-
ously and holding them down for about half a second. This prevents accidental
switch off through knocking the keypad. This ‘OFF’ mode may be disabled via
the Menu or using the Portables PC software.
If the unit is not purged and has gas inside, the next time it is turned on and
zeroed, it will zero in gas presence. In this case, after the gas is purged, the
detector will give negative readings. If this happens, purge the unit until it sta-
bilize at a negative reading, then do a manual zero according to section 4.2.
Operation Detective+
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