Electric spark leak detector for external anticorrosive coating of Shijiazhuang buried pipeline

  Shijiazhuang Lanyu technology MD - Ⅲ electric spark detector detection principle and method of leakage detector for external anti-corrosion coating of buried pipeline
  The principle and method of detecting the direction and buried depth are adopted: Send a specific high-frequency modulation signal to the underground pipeline, and determine the location, direction and depth of the underground pipeline by detecting the magnetic field of the underground pipeline

Detection principle and method:
Send a specific high-frequency modulation signal to the underground pipeline, form a loop with the earth at the damage point of the anti-corrosion coating of the underground pipeline, and radiate to the ground
The radiation signal is strong directly above the damage
Find out the damage point of the anti-corrosion coating of the pipeline according to this principle
The instrument meets the standard gb7993
  Detailed parameters:
The instrument can conveniently and accurately find out the location, direction, depth and the size of the damaged point of the insulating and anti-corrosion coating of the underground metal pipeline without digging the overburden

Purpose:
Conduct completion acceptance of newly laid pipelines;
Regularly inspect the pipeline according to the regulations to determine the cathodic protection effect;
Determine the location of branches on the main and guest lines;
Inspect the distribution of underground pipelines before excavation and soil breaking in the construction section to prevent damage to underground oil, gas, water, electricity and other pipelines during construction

characteristic
Using digital filtering technology, the range of damage point can be set;
It has a variety of detection modes and can be automatically converted
Before the transmitter battery voltage is insufficient and automatic shutdown, send a prompt signal to the receiver, and the value will be saved automatically when shutdown

It can automatically measure the resistance to ground of the pipeline and output the signal to modulate the high-frequency prompt signal
The output power of the transmitter can be automatically adjusted with the increase of detection distance, and the transmitter will shut down automatically after detection

Main technical indicators
1
Measurement range: type A: 0
03-3
50mm ,
  Type B: 3
50-10
0mm
  Type C: 0
03-10
0mm
2
Output high voltage: type A: 0
50-15
0kv ,
  Type B: 15
0-35
0kv
  Type C: 0
50-35
0kv
3
AC power supply voltage: 220V & plusmn; five
4
Internal DC power supply: Ⅲ a type: 6V; Ⅲ B type: 8
4v
5
DC power consumption: ＜ 5W
6
Prompt delay: 1-2 seconds
7
Host volume: 228 & times; 85× 180mm
8
Host weight: 2
5kg (including battery: lithium battery)
Other accessories
  Host , Charger Probe Brush Grounding rod Long and short grounding wires Connecting magnet Gloves Aluminum alloy packing box