The Cd42-T1 (Figure 7); The Cd42-T2 (Figure 8) - CDI CD42 Instruction Manual

The CD42-T1
(Figure 7)
Typical transmission range through pipe of approximately 25 feet
Recommended for use in pipelines 8" to 28" in diameter
Guaranteed minimum 500 hour battery life (21 days)
Pressure rated to 2,500 PSI [170 bar]
Cylindrical dimensions of 10.7" X 3" [272mm X 76mm]
Powered by 6 AA-Cell alkaline batteries
The CD42-T2
(Figure 8)
Typical transmission range through pipe of approximately 50 feet
Recommended for use in pipelines 30" to 60" in diameter
Guaranteed minimum 375 hour battery life (15½ days)
Pressure rated to 2,500 PSI [170 bar]
Cylindrical dimension of 13" X 4.4" [330mm X 112mm]
Powered by 6 C-Cell alkaline batteries
The number of variables in pig location and tracking with magnetics
make it virtually impossible to predict the exact signal strength that you will see from a
transmitter in a given pipeline. Below is a short list of things that cause a drop in signal strength
to the receiver:
Pipe wall thickness
Metallic pipeline coverings such as road casings
Large pipeline diameters
Depth of pipeline cover
Battery strength
The greatest transmitter signal losses are usually caused either by distance from the transmitter
or metal between the transmitter and the receiving antenna. Soil and water between the
transmitter and receiver does not cause any signal loss except for the loss caused by the
increased distance between the transmitter and receiver.
CD42 Pipeline Pig Location & Tracking System
Page 10
Figure 7 CD42-T1
Figure 8 CD42-T2