Agilent Technologies PHD-4 User Manual page 19

The battery pack is protected against shortcuts, overcurrents and
overheatings by means of a fuse, a recoverable thermal switch and a
non recoverable thermal fuse.
The activation of one of these protections is highlighted by the PHD-4
as following described:
Unit: OFF Power Supply: CONNECTED
The message “No Battery” is showed on the display
Unit: ON
The battery icon on the main screen appears as a
battery
Unit: OFF Power Supply: NOT CONNECTED
No message on the display – you can’t switch the
If one of the battery pack protections has been activated, switch the
unit OFF and disconnect the Power Supply cable, than leave the unit
OFF for one hour before connecting the Power Supply again.
If the message “No Battery” is showed again, the battery pack have to
be exchanged.
PHD-4 Portable Helium Detector User Manual
Power Supply: CONNECTED
/ 87-900-120-01 ( F)
Installation procedure
Disposal
crossed
unit ON
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