Starting Up The Instrument; Power Supply; Replacing Batteries - palintest Photometer 7500 Operation Manual

4. Starting up the Instrument

Power Supply

The Photometer 7500 Bluetooth is designed to be powered
either from alkaline batteries or via the USB port.
When operating on battery power, the battery level is
indicated on the Info Panel. A minimum voltage of 3.0V is
needed to operate the photometer and a flashing battery
symbol indicates a critically low battery. Change batteries
immediately or switch to alternative USB power. The
Photometer 7500 Bluetooth will automatically power down
when power is no longer capable of providing acceptable
performance.
To power via the USB port, use the supplied cable connected
either to the mains adaptor or a PC. The USB icon will appear
when the USB connection is made and battery power will no
longer be consumed.
The Photometer 7500 Bluetooth has a back-up battery
mounted internally to save instrument settings and data
during power loss and instrument idle periods.

Replacing Batteries

The battery compartment is located on the base of the
instrument and secured by four screws. Remove the cover
and install a complete set of new batteries, observing the
correct polarity as indicated. Use 3 x 1.5V 'AA' alkaline
batteries or equivalent. See Appendix 2 for more details.
To avoid corrosion damage through leakage, remove
batteries from the instrument if it is to be stored or left unused
for a long period.
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