CDI CD42-T1A User Manual page 10

OVERVIEW 22 Hz ELECTROMAGNETIC TRANSMITTER USER GUIDE
In addi on to ba ery conserva on, deployment of diff ering transmi er
pa erns enables you to dis nguish one pig from another when a run
involves mul ple pigs in a train.
"Delay ON"
In addi on to pulse pa erns, CD42-Tx transmi ers may be factory
programmed for an op onal delay of anywhere from 10 minutes to
several months before they transmit. This feature is useful for when
the pig is loaded into the launcher but may not actually be launched for
some days.
Pressure Ac va on
T1A, T1AHP, T1AVHP, and T4 transmi ers may be ordered or retrofi ed
with an op onal Pressure Ac va on Switch (see pg. 39).
SWX modules may be set for Latching (transmi er stays on once
ac va on pressure is reached) or Non-Latching (transmi er ON state
follows pipeline pressure; i.e., will turn on or off depending on pressure).
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