SF6 P2 Instrument User Manual V1.2
Unrivalled Gas Detect
ion.
Page 8 of 16
ionscience.com
Placement of LEDs:
RUN
This light acts as a life sign to confirm the SF6 AREACHECK P2 is in
operation. As long as no internal
error condition is met, it will blink at all times. During the actual SF6
measurement (normally, this phase
is very short), it will blink at a faster rate.
Should this lamp stop blinking, an internal error has occurred.
ALARM
This light will be permanently on if the last measuring cycle has determined a SF6 concentration above
the selected alarm threshold.
In case of an internal error state, it will blink quickly.
The instrument’s internal audible alarm works in parallel with this lamp.
500 / 1000 / 1500 / 2000 [ppm]
These 4 yellow lamps reflect the last sampling period’s result in terms of alarm levels as designated.
On instruments equipped with the optional oxygen sensor, these lights have the following additional
functions:
• The two leftmost LEDs (500+1000ppm) will blink when an oxygen concentration below the
lower alarm threshold of 16% is present.
• The two rightmost LEDs (1500+
2000ppm) will blink when an oxygen concentration above
the upper alarm threshold of 25% is present.
Lamp test and manual reset
When the key switch is turned to the spring return "TEST" position, all lamps, the internal audible
alarm and the optional external alarm device will turn on until the key switch is released.
When released, a pending alarm condition is cleared.
NOTE: An error condition will NOT be cleared!
When the key switch is turned and released twice within 2 seconds, a system reset is performed
which also clears any pending alarm and error conditions, and logs a fresh reference value.
