Teledyne ADFM Hot Tap, Installation And Operation Manual, Page: 41 / 116

ADFM® Flow Meter
Section 2 Setup and Installation
2-21
2.4.3 Power Selection The ADFM is designed to operate from one of two independent
power sources: internal batteries or external DC power supply.
All sources may be used concurrently; the source that supplies
the highest voltage will automatically supply power to the
system.
Internal Batteries The battery configuration consists of four 6-volt alkaline lantern
batteries with spring terminals. Recommended alkaline batteries
have 25Ah nominal capacity. These alkaline batteries have
approximately 2.5 times the power/life of the lead-acid type.
A supply voltage of 24 to 36 VDC is recommended to allow oper-
ation from the internal batteries when the external power supply
is interrupted.
External DC Power The 24VDC power supply plugs directly into a standard AC
outlet and terminates in a connector compatible with the DC con-
nector on the box or canister controller, or with unterminated
wires if the system includes an accQcomm Interface Module.
This power supply is included with the ADFM system.
DC Power Supply Cable This two-conductor pigtail cable provides no grounding. It mates
with the DC connector on the controller. Wire colors for the power
cable are designated as follows:
This cable is installed at the factory as part of ADFM systems
that are mounted inside an enclosure with a 24V DIN rail
(example: Figure 2-20).
Figure 2-18 Pigtail DC power cable
Pin Color Function
(+)1 Red + DC
(-)4 Black - DC
60-7004-041
For current model canister controller with

metal Crown connectors.
60-7004-062
For box controller and older style canister controller
with Amp connectors