【Function
and Purpose】
Without
excavation, Shengli SL-580A multi-purpose underground pipeline detector is able
to determine the running direction, location and buried depth of underground
metal pipes and cables in a convenient and quick way, and to locate the leakage
points of steel anti-corrosive pipes and the failure points of underground
cables accurately.
Shengli
SL-580A pipeline detector is widely used in petroleum, petro-chemical, gas, and
pipeline transportation departments, and in engineering explorations for urban
gas, tap water, electricity, communications, etc., as well as in pipeline
anti-corrosion detection and underground cable troubleshooting, in order to
guarantee a safe operation of underground pipelines in a reliable and effective
manner.
【Functional
Characteristics】
1.
The adoption of fully digital single-chip microcomputer technology and the
humanized design, providing a performance and a scope of application superior
to its counterparts;
2.
In-pipe current measuring function, providing a basis for judging the
anti-corrosive coating conditions on pipelines;
3.
A specially provided leakage detection function for anti-corrosive coatings: “A”-type
bracket;
4.
Multi-frequency transmission, strong anti-interference capability, applicable
to complicated pipeline detection;
5.
Two signal application modes: induction mode and direct-link mode, applicable
to different situations;
6.
Various response modes: twin-coil peak mode, single-coil peak mode, zero mode;
7.
Various depth investigation modes: direct-reading mode, 80% mode, 70% mode, and
50% mode;
8.
Large-power transmission, 3-5km is reached for one transmission at the
direct-link mode.
【Technical
Parameters】
1.Power
of transmitter：10W（0.5-10W, automatically adjustable）;
2.Working
frequencies: transmitter: 512HZ, 8KHZ, 33KHZ; receiver: 50HZ, 512HZ, 8KHZ, 33KHZ；
3.Depth
range: ≤5m；
4.Depth
error:≤5% of buried depth;
5.Horizontal
positioning error:≤2% of buried depth;
6.Leakage
detection accuracy: ≥0.25mm2;
7、the
display provided with the backlight, for emergent rescue at night;
8.
Indication with left and right arrows, able to quickly locate the pipeline;
9.
Front and back arrows available to indicate the position of the damaged points
on the coating during damage point detection.
【Detection
Principles and Methodology】
Principles
for pipeline location and depth investigation: based on the electro-magnetic
induction principle, we can determine the accurate location, running direction
and buried depth of underground pipelines by detecting the magnetic field
distribution of underground metal pipelines.
Leakage
detection principle: the transmitter sending an electrical signal to the
underground metal pipeline, in case of a damaged point on the coating of the
underground pipeline, that point is short-circuited with the earth, generating
creepage current which radiates all round, and the radiation is the strongest
above the damaged point. That’s how the pipeline detector finds out the damaged
point on the coating.
Notes: Shengli SL-580A multi-purpose underground pipeline detector has been upgraded
to be SL-580B multi-purpose full-frequency pipeline detector
