Details:
【Function】
D1 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:A:0.03-3.5mm(Epoxy coal tar pitch medium)
B:3.5-10.mm(Petroleum asphalt medium)
C:0.03-10.mm(Epoxy coal tar pitch,Petroleum asphalt medium)
3Output high voltage:A:0.5-15KV
B:15-35KV
C: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)
【Accessories】
Charger, high pressure gloves, long cable, short connecting line,
Connecting magnet, earth rod, The brush plate, Manual
【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.
