Pinhole Detector To Test Protective Coatings Flaw Of Oil And Gas Pipelines, Cables, Enamel, Metal Tank
Pinhole Detector To Test Protective Coatings Flaw Of Oil And Gas Pipelines, Cables, Enamel, Metal Tank
Details:
【Function】
HD-201 Porosity Holiday detector is a special testing equipment used to detect oil and gas pipelines, cables, enamel, metal tank, hull and other protective coatings flaws. It is a simple and practical equipment.
【Characteristic】
1,Low power consumption, small size, light weight；
2,Simple operation；
【Main technical index】
1,Measuring range:
HD-201A:0.03-3.5mm(Epoxy coal tar pitch medium)
HD-201B:3.5-10.mm(Petroleum asphalt medium)
HD-201C:0.03-10.mm(Epoxy coal tar pitch,Petroleum asphalt medium)
3,Output high voltage:
HD-201A:0.5-15KV
HD-201B:15-35KV
HD-201C:0.5-35KV
4,Display:pointer
5,High voltage control system:Ordinary potentiometer adjustment
6,DC supply:12v
7,Consumption:＜5w
8,Alarm delay:1-2s
9,High voltage probe:Electronic high voltage generator
10,Packing:metal chest
11,Main dimension: 165mm×155mm×68mm
12,Weight:1.5kg(Including battery)
【Principle】
The detector generates a high DC voltage that is applied to the coating surface through a probe. The detector is connected to the substrate via the high voltage returned. When the probe is passed over a coating flaw, then the electrical circuit is completed and current flows from the probe to the substrate. As a result, audible and visual alarms are activated in the detector and a spark may be produced at the flaw.
【Test voltage schedule】
| Anticorrosion material | Coating thickness | Detection voltage | Remarks |
|
Epoxy coal tar pitch Two oil cloth |
0.2 0.4 0.6 0.8 |
4-5KV Or self |
If standard shall be implemented according to the standard |
|
Petroleum pitch |
2 3 5.5 7 9 |
11 15 18 20 24 |
|
| Polyethylene tape |
According to: 3249TC=V formula conversion V: voltage TC: anti-corrosion layer thickness Standard implementation of SY4014-92 acceptance criteria |
||
| Glass lined | Depending on the experience, the detection voltage is generally 8KV-20KV | ||
| Other anticorrosive materials | Depending on the design of the design department to detect the insulation performance of the voltage or the material itself. | ||
【Standard delivery】
Main unit
High voltage gun
High voltage gun
Charger
Long cable
Short cable
Connecting magnet
Earth rob
high pressure gloves
Instruction manual
HUATEC calibration certificate
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.