【Function
and Purpose】
Shengli
SL-6 leakage detector for underground metal pipeline coatings is one of the
novel devices of high stability and anti-interference which attracts great
attention in the world presently. It can find out the running direction and
depth of underground pipelines as well as the accurate location of the leakage
points on the coating in a convenient and precise way, which exempts the ground
above the pipelines from “pains” of excavation. It’s a detection device used by
such departments as oil fields, chemical industry, oil transportation, gas
transportation and water & electricity for construction quality and maintenance
check on underground pipeline coatings.
【Characteristics】
1.
The original Japanese high-reliability switch power supply is used, with smart
and quick charging, without manual control.
2.
Voltages and output current signals are both switched automatically.
3.
DC/AC power supply is switched automatically.
4.
The device adopts high anti-interference lines, especially applicable to
general inspection and maintenance on urban pipe networks.
5.
The transmitter adopts LCD display, improving output precision and device
performance.
6.
The device is specially provided with automatic adjustment function for
protection, overcoming the Achilles’ heel of its counterparts.
7.
The line of the device is of modular structure and “three-prevention” design,
extending the outdoor servicing life and also improving reliability
significantly.
【Primary
Technical Parameters】
1.Leakage
detection accuracy: ≥0.25mm2；
2.Positional
deviation: ＜20cm；
3.Accuracy: ＞98%
4
Range of application: underground anti-corrosive metal pipelines of various
diameters for oil, gas, water, etc.
A.
Technical parameters of the transmitter:
●Transmitting power: ≥25W,
adjustable
●Transmitting
frequencies: 1K±0.1Hz, clock frequency of 1-2Hz
●Output impedance
matching: 0-100Ω
●Transmitting
distance: 50m-5Km，able to be moved beyond 5km in steps
●Working current: ≤3A,
adjustable between 1A and 3A
●Working power supply:
12V（NiCd battery or car power supply）
●Weight: 2.8Kg (battery
excluded)
●Overall dimension: 99×220×220
B.
Technical parameters of the pipe locator
●Sensitivity: 0.1mV
●Positional deviation: ≤10cm
●Investigation depth: ≤5m
●Working power supply:
6V NiCd battery pack
●Weight: 0.9kg
●Overall dimension: 165×135×69
C.
Technical parameters of the leakage detector:
●Leakage detection
accuracy≥0.25mm2
●Leakage detection
depth: ≥0.5m
●Positional deviation: ＜20cm
●Working power supply:6V
NiCd battery pack
●Weight: 0.9kg
●Overall dimension: 165×135×69
【Detecting
Principles and Methodology】
By
sending a 1KHz electrical signal to underground pipelines, the detector
determines the running direction and the depth of pipelines based on the principle
that the received signal is the smallest (almost zero) when the probe is
vertically tangent to the magnetic horizon.
Leakage
detection principle: an AC signal source sent to the underground pipeline, in
case the coating is corroded, the metal part at that area is short-circuited
with the earth, and the loop is formed at the damaged point, which radiates the
leakage point signal to the ground, with the strongest signal right above the
damaged point. That’s the principle how we can find out the damaged point on the
coating accurately.
Leakage
detection method: The leakage detector adopts “body capacitance method”, i.e.,
with human body as the induction element of the leakage detector. When the
operator walks close to the leakage point, the leakage detector begins to
react. When he is right above the leakage point, the volume in the loudspeaker
is the highest and the displayed value is the largest. That’s how we can find
the leakage point.
Notes:
Shengli SL-6 leakage detector for underground metal pipeline coatings has
ceased production. Please click to view similar products.
