TECHNICAL INFORMATION
27
87-900-120-01 (A)
Battery Maintenance
The “Battery Maintenance” function makes it possible
to eliminate any reductions in autonomy of the Nickel-
Metal-Hydrate battery due to the phenomenon
generally known as “Memory effect”.
Cancellation of the memory effect is obtained with fast
complete discharge of the battery.
NOTES
Always start the “battery Maintenance” function after
connecting the connector to the PHD-4.
The “Battery Maintenance” function causes maximum
absorption of current through switching on of the heater
at maximum temperature and of the sampling pump at
maximum speed.
During the discharge phase, the flow inversion valve is
active.
NOTES
If the PHD-4 is exposed to high concentrations of
Helium during discharge, the “battery Maintenance”
function is interrupted in order to protect the sensor
element from saturation.
Charge level
With the “Charge level” function, it is possible to know
the precise percentage residual charge of the battery.
With the power supply connected, no data is shown
(---%).
PHD-4 Info
The “PHD-4 Info” menu provides specific information
regarding the PHD-4 being used.
In particular, it is possible to know:
Part Number, Serial Number, Firmware release,
Working time.
Security
The “Locking” menu makes it possible to protect the
basic parameters of the PHD-4 against modifications.
In particular, the following settings are protected:
Sensitivity, Unit of measure, %Helium, Setpoint menu,
Reading adjustment.
Protection can be enabled/disabled entering the
password (default “00000”).
The password can be modified by the user with the
“Change user password” function.
Psw protection
Enable
protection
Change User Psw
