4220 Flow Meter
Section 3 Installation
3-4
Note
Do not attempt to run a sampler from a power source installed
on a flow meter. While a flow meter will operate satisfactorily
powered from a sampler, the reverse is not true. The sampler's
pump draws heavy current, particularly on startup. The flow
meter-to-sampler connect cable cannot carry such currents. If
you are using a single power source for a flow meter-sampler
combination, always install the power supply on the sampler.
3.2.3 Isco Nickel-Cadmium
Battery
Teledyne Isco offers a 4 ampere-hour 12-volt rechargeable
nickel-cadmium battery pack to power the flow meter. Teledyne
Isco packages this battery specifically for use with Isco flow
meters and samplers. Refer to the Power Products Guide accom-
panying this manual for detailed information about this battery
and the procedure for charging it.
3.2.4 Attaching the
Nickel-Cadmi um
Battery
Install the battery on the top of the flow meter case, and attach
its connector to the 12 VDC connector on the side of the flow
meter. Place the battery with its cable pointing toward the right
side of the cabinet. Secure the battery by stretching the two
rubber draw catches on top of the flow meter until they slip over
the two metal “U” brackets mounted on the ends of the battery
case. Then screw the battery connector into the top mating con-
nector on the right side of the flow meter case.
Figure 3-1 Nickel-Cadmium Battery Installed on a Flow Meter