3.6 Power
button
Use this button to turn the instrument on and off.
3.7 Nozzle
present
A range extension nozzle is available for monitoring high leak rates. The nozzle diverts
97% of the air input away from the sensor so that a much larger flow can be handled.
After attaching the nozzle, press
PEAK HOLD
and
GAS GROUP
together so that the
Nozzle Present symbol appears on the display. Where a flow rate is being indicated,
the instrument adjusts the reading to adjust for the fact that 97% of the flow is bypassing
the sensor. Concentration (ppm) values will not be affected.
Upon removing the nozzle, press
PEAK HOLD
and
GAS GROUP
again to remove the
Nozzle Present symbol.
The same operations should be carried out when attaching, or removing, the extended
probe supplied as part of the
8066
.
3.8 Battery
low
This symbol becomes visible when the battery is low. Refer to Section 6.
Section 4 Operation
4.1 Starting up and switching off
Press the
POWER
button to turn on the instrument. During the first six seconds
(approx.), the instrument performs a start-up and test sequence. After this, the
instrument can be switched off by pressing the
POWER
button again.
If the battery voltage is below the operating threshold, the instrument will switch off
automatically.
If no buttons are pressed for 15 minutes, the instrument will turn itself off. An audible
warning will occur for 5 seconds before it turns off. Pressing any button during this
period will keep the instrument on for another 15 minutes.
INT-0124-XX 8
