48 • Display Mode
Gas Tracer Operator’s Manual, CSA Version
HC Range Screen
This screen displays only if your Gas Tracer is equipped with both the catalytic % LEL
combustible sensor and the TC % volume combustible sensor. It allows you to select the
display units for the combustible channel as % LEL/% volume autoranging or %
volume. If autoranging is selected, the combustible gas reading will be displayed
in % LEL up to 100% LEL, which is equivalent to 5% volume for methane (CH
4
).
Above 100% LEL, it will be displayed in %volume. If % volume is selected, the
combustible gas reading will be displayed in % volume only.
CAUTION:
If the combustible channel is set for % volume only, then there are no gas
alarms for any detection channel and NO ALARM will appear in the
upper left corner of the screen when you return to Normal Operation.
To update the HC range setting:
1. After entering Display Mode and arriving at the HC Range Screen, press and
release the POWER ENTER button. The current setting will appear at the
bottom of the LCD.
2. Use the AIR
▲
or (SHIFT)
▼
button to change the setting.
3. Press the POWER ENTER button to save the change.
4. Press the DISPLAY (ADJ) button to advance to the next screen.
Peak Screen
The Peak Screen displays the highest (lowest for O
2
) concentrations detected since
the Gas Tracer was turned on. Peak readings are stored in the Gas Tracer’s
memory until a higher level is detected, the peak reading is reset, or the Gas
Tracer is turned off.
The lunch break feature enables the Gas Tracer to remember peak readings when
it is turned off so it can continue them when it is turned on again. See “Turning
On the Gas Tracer, Normal Mode Only” on page 25. To reset the peak readings
during operation, press and hold the RESET SILENCE button for a few seconds
while in the peak screen.
HC
SEL
22:39
HC RANGE
0
20.9
0
%LEL
%
ppm
CH
4
O
2
PEAK
CO
PEAK
