Mounting The Transmitter On Your Pig; Foam Polypigs; Metal Bodied Pigs; Miscellaneous Pigs - CDI CD42 Instruction Manual

Mounting the Transmitter on your Pig

Foam Polypigs

In general the CD42-T1 transmitter will fit into the recessed cavity of a polypig. The dimensions of
the CD42-T1 are compatible with the Pipeline Inspection Company PT-275. This means that a pig
fitted for a PT-275 can accept the CD42-T1.

Metal Bodied Pigs

Most metal body pigs require a flange mounting kit, obtained from CDI. This kit allows the CD42-
T1 to be bolted to the body of a metal pig.

Miscellaneous Pigs

The CD42-T1 transmitter is designed to fit into, or be towed behind all types of pigs. Pigs that have
been previously equipped with Pipeline Inspection Company‟s SPY transmitters are mount
compatible with our CD42-T1 transmitter.

Transmission Strength and Battery Life

Battery strength effects reception by decreasing the strength at which the CD42-Tx transmitter emits its
pulses. Therefore, as the batteries in the transmitter diminish, the range of its pulsed signals will shrink.
However, CDI‟s transmitters are designed to minimize this effect, and you may notice that the
transmitter strength will remain quite strong up until the device‟s rated life and then will drop off quite
rapidly – this is by design and should not be of concern.

Routine Maintenance of Transmitters

CDI‟s transmitters require minimal routine maintenance, however, proper care of the transmitter is still
important to prolonging its operational life.
The following steps should be followed during each assembly of a transmitter:
1. The rubber O-Ring seal should be carefully inspected for bits of soil, hard petroleum flakes,
grass, or any other foreign matter that might cause the O-Ring to be unable to effectively seal
against its mating surface.
2. The facing surface to which the O-Ring mates should be carefully inspected for foreign matter
that might cause the O-Ring to fail to mate effectively.
3. The facing surface to which the O-Ring mates should be carefully inspected for damage such
as dents, nicks, scratches or any other mechanical deformity that might cause the O-Ring to be
unable to effectively seal against its mating surface.
4. The O-Ring and the facing surface should have a light coating of a petroleum jelly such as
Vaseline to reduce any friction between the two surfaces during assembly. This will prolong
the life of the O-Ring itself, as well as help ensure that the O-Ring isn‟t damaged during the
cap-tightening process.
CD42 Pipeline Pig Location & Tracking System
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