D1 series Holliday detector is used to detect oil and gas pipelines, cables, enamel, metal tanks,
the hull construction quality of the metal surface coating and micro porous aging corrosion points, a
dedicated testing equipment of the air gap is auniversal version of the Holliday detector.
For newly constructed tanks, pipelines and other installations, where corrosion prevention coatings
have had to be applies, specifications will normally call for a specific coating to a specific thickness.
With corrosion an extremely costly and disruptive worldwide problem, preventative determination becomes
essential.
[Features]
1, low power consumption, small size, light weight;
2, simple operation, intuitive and convenient;
3, the Dial pointer header indicates the output voltage and supply voltage;
Model
D1-A
D1-B
D1-C
Detect range
0.03-3.5mm
Coal tar epoxy (medium)
3.5-10.mm
Petroleum asphalt (medium)
0.03mm~10mm
Petroleum asphalt, Coal tar epoxy
Output voltage
0.5-15KV
15-35KV
0.5KV~35KV
DC power supply
12V
Display screen
Dial
the high-voltage control system:
ordinary potentiometer adjustment
Power consumption:
<5w
the alarm delay
1-2 seconds
the high-pressure gun:
Microelectronics high-voltage generator
Weight
1.5kg with Battery
Dimensions
165mm×155mm×68mm
165mm×155mm×68mm
165mm×155mm×68mm
Packaging:
metal box
metal box
metal box
[Testing principles and methods]
Leak detection principle: metal surface insulating coating is too thin, iron leakage and leakage porousat the resistance value and density of the air gap is very small, when there are high-voltage spark discharge after the formation of air gap breakdown, to the alarm circuit to generate a pulse
signal alarm audible and visual alarm, according to this principle of the
coating leak detection purposes.
Charger,
high voltage gloves,
long cable,
short cable to connect the magnet,
the plate probe brush,
grounding rods,
documents
