RLE Technologies LD5100, User Manual

Page: 41 / 72

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C
H A P T E R
C
HAPTER
0
M
APPING THE
C
ABLE
After the SeaHawk Water Leak Detection Cable (SC) is laid in the desired configuration, the
cable can be mapped. Mapping the cable improves the accuracy of the LD5100 reference map
and makes it easier to locate a leak.
To ensure the cable has been installed properly, RLE recommends testing the cable in a few
spots before mapping the system,.
The LD5100 computes the distance from the control panel to the leak along the length of SC
cable attached to the unit. In most cases, the SC cable is laid in a curved or serpentine pattern.
This may make it difficult to locate a leak when given a linear distance. To help alleviate this
problem, identify a series of easily accessible, evenly spaced points along the cable length.
Number the points, and record their locations on the cable reference map (part #FM1114)
provided by RLE, or refer to the directions for creating a map below (6.1., “Mapping
Directions” on page 42). Use the numbered points to map the cable. Then, when the unit
detects a leak, the location of the leak can be determined by comparing the distance shown on
the control panel with the known positions along the cable as recorded on the reference map.
Note Calibrate the LD5100 prior to mapping by adjusting the Resistance per Foot reading; see
5.8.14, “Resistance/Foot (Res/Ft)” on page 38 for more details. This allows the LD5100
measured cable length to accurately reflect the actual cable length installed.