Carrying Out A Benzene/Pre-Tube Measurement With The Wizard; Mounting The Pre-Tube Bracket - Dräger HFG 000 Series Technical Manual

Operation
To carry out a leak search:
1. Sign in with the required user level.
2. Select
3. Confirm the successful leak test to start the measurement.
The device emits tones in the "Individual measuring channel" display which
increase in frequency as the gas concentration increases. If the pre-alarm threshold
is reached, the gas alarm appears.
To end the leak search:
1. Select
2. Remove the pump adapter.
3. Return to normal measuring mode.
4.14 Carrying out a benzene/pre-tube measurement with the
wizard
Observe the instructions for use of the respective tube!
The use of a pre-tube is only possible when using the wizard.
During the benzene/pre-tube measurement, the visual alarm, acoustic alarm,
vibration alarm and alarm evaluation are deactivated.
A benzene/pre-tube measurement (photoionisation detector) with a pre-tube (e.g.
benzene pre-tube) can only be done with the benzene/pre-tube wizard.
During the benzene/pre-tube measurement, the gas to be measured and the PEAK
values are visible on the display. All other sensors are not evaluated.
4.14.1

Mounting the pre-tube bracket

Fast temperature and humidity changes influence the measured signal. If
temperature and humidity jumps are anticipated, Dräger recommends using a
damp pre-tube for the measurement.
30
> Leak Search in measuring mode.
in leak search mode and confirm the dialog.
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Technical manual X-am® 3500/8000