Transportable high voltage Holiday Detector to locate pores, cracks and other faults in insulating materials (e.g. varnish, synthetic material, rubber, bitumen) on conductive substrates (e.g. steel, aluminium, earth-moist concrete constructions) as per DIN 55670.
The Holiday Detector, PoroTest 7, is specially designed to test functionally critical insulating layers, e.g. inner and outer linings of tanks and pipelines in the field of petrochemicals, anti-corrosion coatings in shipbuilding, protective coatings of sewage tanks etc.
The electronically controlled high voltage source unfailingly prevents the test voltage from exceeding and dropping below limit, a feature not provided in low-cost devices. Exceeding the limit can cause damage to the coating to be tested; dropping below the limit prevents detection of pores.
A wide range of special electrodes are available; we can also fabricate customised inner, outer and plate electrodes as per application requirement of the client.
|Operating range||P7:0.5 kV – 7 kV|
|P35:6 kV – 35 kV|
|Coating thickness||P7:0.03 mm – 1.7 mm|
|P7:1 mils – 67 mils|
|P35:1.4 mm – 11.3 mm|
|P35:55 mils – 444 mils|
|Test voltage indication||LC-Display, 3-digit|
|Accuracy of voltage setting||± 0.1 kV – + 3 %of reading|
|Dimensions and weight||High voltage probe:274 mm x 63 mm (l x dia)/550 g 10.8“ x 2.48“/1.2 lbs/19.4 oz.|
|Control unit:225 mm x 150 mm x 85 mm (L x W x H)/1400 g / 8.87“ x 5.9“ x 3.35“ (L x W x H)/3 Ibs/49 oz.|
|Alarm signal||90 dB, 0.1 s/Pore, continuous tone in case of short-circuit|
|Signal output||potential free, Umax.: 100 V, Imax.: 0.4 A|
|Storage battery||4 C-cells, IEC LR 14, 3.5 Ah, NiMH, replaceable|
|Storage battery life at maximum voltage||P7:~ 20 h|
|Storage battery charging time||4 hquick charge|
|Mains Voltage||110 V – 230 V|
|50 Hz – 60 Hzautomatic switch|
|Operating temperature||0 °C – 50 °C|
|32 °F – 122 °F|
|Humidity||avoid dew on the surface (refer to DIN 55 670)|
|Standards||DIN 55 670, DIN 50191 (VDE 0104), DIN EN 61010/Part 1 (VDE 0411/Part 1)|