Underground Pipeline Corrosion Cathodic Protection Effecttiveness Testing CIP/Dcvg Kits

• Customization: Available
• After-sales Service: 24h Online
• Warranty: 1 Year
• Model NO.: DCVG
• Cips Range: Auto Range: 10 Mv, 25 Mv, 50 Mv, 100 Mv, 250 Mv, 5
• Dcvg Range: Auto Range: 10 Mv, 25 Mv, 50 Mv, 100 Mv, 250 Mv, 5
• Positioning Accuracy of Coating Defects: ≤15cm
• Detection Depth: ≤5m
• Leak Detection Accuracy: Detectable Defects ≥0.25mm²
• Compatibility: Compatible with Interrupters of Similar Foreign Pr
• Input Impedance: 100MΩ
• Transport Package: Export Case
• Trademark: GOLD
• Origin: Chongqing, China
• HS Code: 9031809090
• Production Capacity: 100 Sets/Month

Product Description

Products Description

Pipeline Corrosion & Cathodic Protection Survey System

  DCVG(Direct Current Voltage Gradient) is a non-destructive and efficient equipment for detecting underground pipeline corrosion and cathodic protection effectiveness. By combining CIP and DCVG detection, potential hazards in pipelines can be fundamentally eliminated. Both CIP and DCVG require periodic on/off of cathodic protection current. CIP uses one copper sulfate electrode and a long wire connected to the pipeline to read the pipeline's own polarization potential to ground, eliminate IR drop (Voff), and identify issues such as insufficient protection, unreasonable rectifier output, DC interference, and cross pipeline overlap. DCVG uses two copper sulfate electrodes (with a spacing of 1-2m) to accurately locate the location of the damaged anti-corrosion layer, calculate the% IR, determine the severity of defects, and assess the current flow and corrosion activity of defects.

  Using CIP alone cannot accurately locate a single point of leakage, only the abnormal potential section can be seen Using DCVG alone cannot rule out the possibility of insufficient cathodic protection. The combination of the two can efficiently and accurately determine the problems in the pipeline and provide excavation points

Main Features

1. High positioning accuracy
The positioning error of the leakage point is small, and vertical and horizontal retesting can accurately lock the center of the damage, greatly reducing the amount of blind excavation work and saving construction costs.

2. Defect grading to guide maintenance planning
Classify defect levels based on% IR values, prioritize high-risk severe damage, arrange maintenance plans reasonably, and improve pipeline operation and maintenance efficiency.

3. Able to identify active corrosion points
Different from ACVG that simply finds leakage points, DCVG relies on cathodic protection DC signals to determine whether there is a corrosion risk in defects and to control hidden dangers in a targeted manner.

4. Superior anti-interference ability compared to AC detection
Based on DC intermittent signals, it is less susceptible to mild interference from road AC and cable AC stray currents, making it more suitable for urban and factory pipelines.

5. High efficiency of large-scale inspection
Single or double people can walk along the pipeline for inspection, equipped with distance measuring wheels and GPS synchronized recording of defect mileage and coordinates, suitable for surveying tens of kilometers long pipelines.

6. Accurately evaluate whether cathodic protection meets the standard
By using Voff power-off polarization potential to determine whether the pipeline meets the -850mV (CSE) protection criterion, quantifying the overall pipeline protection effect, and providing a basis for adjusting rectifier parameters.

7.Early detection of potential corrosion risk pipeline sections
Quickly locate under protected and unprotected areas, provide early warning of corrosion hazards, and avoid long-term under protection of pipelines leading to perforation and leakage.

8. Identify hidden electrical faults
It can detect connection faults that cannot be detected by the naked eye, such as insulation flange failure, cross pipeline metal overlap, and sleeve short circuit, which cannot be identified by ordinary leak point detectors.

9. Quantifiable level of stray current interference
Determine the strength of DC stray current through the fluctuation amplitude and positive and negative offset of the potential curve, and guide the construction of drainage renovation.

10. Suitable for various buried steel pipelines
Oil and gas transportation, water supply and drainage, thermal steel pipelines, and plant process pipelines can all be used without mild interference from conventional road surfaces.

Detailed Photos

 

Technical Specifications

No.	Item	Specification
1	CIPS Range	Auto range: 10 mV, 25 mV, 50 mV, 100 mV, 250 mV, 500 mV, 1.0V, 2.5 V, 5.0V, 10.0V, 25.0V
2	DCVG Range	Auto range: 10 mV, 25 mV, 50 mV, 100 mV, 250 mV, 500 mV, 1V, 2.5 V, 5V, 10V, 25V
3	Positioning Accuracy of Coating Defects	≤15cm
4	Detection Depth	≤5m
5	Leak Detection Accuracy	Detectable defects ≥0.25mm²
6	Operating Voltage	8.4V 5AH
7	Display	320×320 LCD large screen
8	Operating Time	>24 hours
9	Operating Language	Chinese/English selectable
10	Interface Display	Real-time data, real-time waveform
11	Memory	6GB, stores up to 1 million data sets
12	Internal Clock	Powered by independent lithium battery
13	Compatibility	Compatible with interrupters of similar foreign products
14	Input Impedance	100MΩ
15	Storage Duration	Continuous data storage >24 hours
16	Power Supply	Built-in lithium battery pack 8.4V 5AH
17	Operating Environment	-10ºC to 40ºC, relative humidity <80%RH
18	Storage Environment	-20ºC to 60ºC, relative humidity <90%RH
19	Main Unit Dimensions	245×150×48mm
20	Main Unit Weight (with battery)	1.0Kg
Circuit Breaker
1	Out Put Voltage	Max 80V
2	Out Put Ampere	Max 80A
3	Power Supply	Built-in Lithium battery
4	Continuous working hours	≥48h
Working Mode
No	ON(s)	OFF(s)
1	0.45	0.8
2	1.6	0.9
3	0.8	0.45
4	3.0	2.0
5	4.0	1.0
6	through
7	0.45	0.9
8	0.9	1.8

About Us

Chongqing Gold Mechanical & Elerctrical Equipment Co., Ltd
 

2000

Established in 2000, we have more than 20 years experience is all kinds of geophysical equipment. We provide detectors, seismograph, borehole camera, magnetometer and geophysical logging deivices.

2008

Our company developed very fast in this period, and we also expand our products scale. We can also provide drilling rigs, water level meter, inclinometer, GPS, total sation and so on.

2013

As their are more colleagues joined into our team, our company moved to China Resources building. And at there, our company acheived much more turnover and it is still in growing

2023

We are looking for more potential product and business relationship with anyone or any company in the world. What we are glad to see is a win-win situation.