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Option: 9 Volt Battery Pack
A Battery Pack that uses a common 9 Volt battery can be mounted to the top of your M or V Series Flow
Meter. Power is passed from the battery to the ow meter through the 8 pin Mini-DIN connector. Output
signals from the ow meter or pressure guage are passed through the male connector on the bottom
of the battery pack to the female connector on top of the battery pack so the signals can be accessed
normally. Turn off the switch on top of the battery pack when the meter is not in use. (Note: The Battery
Pack cannot be used with Flow Controllers)
Normal (9V alkaline) battery life is approximately 8 hours (30-40 hours with a 9V-lithium battery), however
many factors can affect this. Replace the battery as often as required. A common indicator that the battery
may be approaching the end of its life is a sharp increase in the temperature indicated on the meter.
This false signal can result when the voltage drops below its normally regulated level. This can affect
the accuracy of the meter so it is good practice to check that the temperature is approximately correct
(25°C is about room temperature) or use a fresh battery especially if the measurement is critical.
Replacing the Battery:
The battery can be replaced with the battery pack installed on the ow meter.
Remove the four Phillips head screws from the back cover and gently remove it as shown below.
Remove the 9V battery, pulling the top of the battery out rst.
Remove the old battery from the harness and replace it with a new battery.
Install the new battery bottom end rst and replace the back cover so that the cushioning pad
presses directly down on the battery.
Replace the four Phillips head screws.
Battery Pack Back Cover Removal
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