Operating instructions HLE 500/5000
7
MAN_HLE500_HLE5000_eng_02
Fig 3 :
Base plate with locking screws
2.4
Automatic battery monitoring
When working with the leak detection equipment, the state of
the batteries is monitored continuously. Should the battery
voltage drop too far, this will be indicated by a flashing
battery symbol in the top right of the display.
From that point, there is about 4 hours of battery life
remaining.
When you have to change the batteries, change all
10 batteries at one time!
2.5
Illumination of the LCD display
By briefly pushing the on/off button
when the
equipment is turned on, the illumination for the display will be
activated / deactivated.
2.6
Microphones
The microphones are connected to the leak location
equipment via a cable. The socket for this connection is on
the right hand side of the equipment (see fig. 2). To record
the sound of leaks there are various sensors/ground
microphones available.
A sensor rod microphone is used to
listen to sounds from directly accessible pipe parts, such as
hydrants or valves. Each sensor is used as follows:
Locking screws
