External 12 Volt Direct Current Source; Power Pack Installed On Flow Meter - Teledyne 4250 Installation And Operation Manual

4250 Flow Meter
Section 3 Installation
Figure 3-2 Power Pack Installed on Flow Meter
3.2.6 External 12 Volt Direct
Current Source
3-6
Attaching the Power Supply – Mount the power supply on top
of the flow meter cabinet the same as described for the batteries.
Secure the power supply with the two rubber draw catches pulled
over the brackets on the ends of the power supply. Attach the
short cable with the smaller connector to the top connector on the
right side of the flow meter case. Connect the longer cord with
the plug on it to an unswitched AC outlet. Refer to Power
Products Guide for details about charging batteries with the
power pack.
You can also power the flow meter from an external 12 VDC
source, such as an automotive, motorcycle, or marine battery.
Many people have found that a deep-cycle marine/RV battery is
particularly well-suited to this application. However, you will
have to mount batteries of this type externally, as they are too
large to fit on top of the flow meter. Teledyne Isco offers a special
optional connect cable to power the flow meter from a separate
battery. Mount the battery securely, in an upright position, so it
will not inadvertently tip over, or be at risk of having its cable
pulled off.
Be sure of proper polarity before attaching clips to the battery.
Never attach the flow meter to a source of unknown polarity or
voltage. If in doubt, check with a reliable DC voltmeter. Never
attach the flow meter directly to an AC power source under any
circumstances. Charge batteries only with compatible equip-
ment, in accordance with manufacturer's instructions.
CAUTION