Operation Manual

Sensor chargers
165
850-165186 / Rev.B
PI Charger
Purpose
The PI Charger is an intelligent battery charger for fast and
secure charging of the PI sensors. The charger will
automatically set up the correct charging current depending on
the sensor type and the battery temperature. Even though the PI
Charger is designed for fast charge of the PI sensors, it can also
charge the PS sensors, but only at normal charge rate. A fuel
meter shows the status of the battery during the charge.
Daily operation
1) Attach the charging clamps to the sensor as
follows:
Red clamp: Positive fastening lug (+)
Black clamp: Negative fastening lug (-)
2) Ensure that attachment materials, rope etc. do not
short circuit the charging lugs, preventing charging
and causing damage to the sensor lugs.
Once connected, the charger will identify whether
the sensor connected can be fast charged or not.
The battery temperature will always be monitored
for a fast charging sensor. A sensor which can not
be fast charged, will not display the battery
temperature, and the temperature LED will be
dark.
3) Observe the charge times and temperature limitations:
Fast charge: First approximately 1 hour for 70% battery
capacity, then approximately 3 hours to reach 100% capacity.
Once fully charged, a constant trickle charge will compensate
for self discharging. Note that fast charging applies to PI
sensors only!
Normal charge: 16 hours for full battery capacity. This
mode applies for charging outside specified temeparture
range, and for all PS sensors.
Charging temperature: For best results, keep the ambient
temperature between +10 and +25°C. Do not charge in
temperatures above +50°C or below 0°C!