Copyright © Sigicom AB 2020
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See chapter 5 for more information about the display screens.
2.3.
Batteries
The power supply of the C22 has two Li-Ion batteries and uses the battery
with the highest voltage. The switch-over between the batteries is
automatic.
If the unit is firmly mounted, the batteries can be replaced one at the time
during normal operation without interrupting the measurement. A lock
lever holds both batteries in place when the battery lid is removed. See
the safety section at the beginning of this manual on how to replace the
batteries. Voltage, current, temperature and a digital identity of both
batteries are monitored to ensure safe use and charging.
Note! Make sure that both batteries are inserted.
2.4.
External Power Connector
The external power connector is located at the left-hand side of the
instrument. Input for a 12V power supply is supported. When the battery
level is low, the external power will charge the batteries up to 60% to
extend battery life. For a complete charge, the batteries must be removed
from the instrument and charged separately.
Note! Use the plastic cap to protect the external power connector
when not in use.
2.5.
USB Connector (Mini-B Type)
A Mini-USB connector, mainly used for maintenance, is on the left-hand
side of the unit. C22 is never powered through the USB interface. Do
never monitor vibrations with the USB connected.
When set through the graphical user interface, the memory card can be
accessible as a Windows drive via the USB interface. See section 5.8.5.
Firmware upgrade is normally performed remotely via INFRA Net but
may also be done via the USB interface. See section 5.8.6.
