Electric spark detector, also known as electric spark leak detector, full name of electric spark anti-corrosion layer detector, electric spark anti-corrosion layer leak detector. The instrument adopts the principle of high-voltage pulse, that is, when the anticorrosive coating on the conductive metal substrate has pinholes, blisters, bubbles and other corrosion defects, the instrument emits sound and light alarms, and some intelligent counting instruments record the number of anticorrosion defects at the same time. The instrument can be used for quality inspection of different thicknesses of glass fiber reinforced epoxy coal tar pitch and rubber linings.
EDM instruments are widely used in oil and gas field anti-corrosion tanks and pipelines, pipeline installation companies, Jian'an supervision companies, chemical pipelines, porcelain enamels, machinery, power plants, shipyards, petrochemical plants, military factories, bridges and other industries.
EDM leak detector instrument detection voltage: Select the appropriate detection voltage according to the thickness of the coating, the conventional instrument detection voltage is 500V-6KV, 5KV-30KV, 500V-30KV three, pointer leak detector is equipped with 5KV-30KV The high pressure rod and the low pressure rod of 500V-6KV are two kinds, and a high pressure rod of the digital instrument realizes the full range of 500V-30KV. The specific detection process should be based on the thickness of the coating and the specific material of the object to choose a reasonable detection voltage.
The leak detection voltage is determined according to the following formula:
(1) 0.2mm, 0.4mm, 0.6mm, 0.8mm epoxy coal tar pitch selection 4 ~ 5KV detection voltage or according to the relevant implementation.
(2) Thickness of 2,3,5.5,7,9 (mm) corresponding to the detection voltage of petroleum asphalt coating is 11, 15, 18, 20, 24 (kv) respectively.
(3) Polyethylene tape, when Tc <1mm: V = 3294 √ Tc When Tc ≥ 1mm: V = 7843 √ Tc, V: voltage, TC: thickness of the anti-corrosion layer; perform according to SY4014-92 acceptance criteria.
(4) Determine the detection voltage based on the experience of glass, generally 8KV~20KV.
(5) Commonly used common fuel gas pipeline 3PE anti-corrosion layer commonly used detection voltage is 15KV.
(6) Other anti-corrosion materials, depending on the design department's design to detect the voltage or the insulation properties of the material itself. (end)
EDM instruments are widely used in oil and gas field anti-corrosion tanks and pipelines, pipeline installation companies, Jian'an supervision companies, chemical pipelines, porcelain enamels, machinery, power plants, shipyards, petrochemical plants, military factories, bridges and other industries.
EDM leak detector instrument detection voltage: Select the appropriate detection voltage according to the thickness of the coating, the conventional instrument detection voltage is 500V-6KV, 5KV-30KV, 500V-30KV three, pointer leak detector is equipped with 5KV-30KV The high pressure rod and the low pressure rod of 500V-6KV are two kinds, and a high pressure rod of the digital instrument realizes the full range of 500V-30KV. The specific detection process should be based on the thickness of the coating and the specific material of the object to choose a reasonable detection voltage.
The leak detection voltage is determined according to the following formula:
(1) 0.2mm, 0.4mm, 0.6mm, 0.8mm epoxy coal tar pitch selection 4 ~ 5KV detection voltage or according to the relevant implementation.
(2) Thickness of 2,3,5.5,7,9 (mm) corresponding to the detection voltage of petroleum asphalt coating is 11, 15, 18, 20, 24 (kv) respectively.
(3) Polyethylene tape, when Tc <1mm: V = 3294 √ Tc When Tc ≥ 1mm: V = 7843 √ Tc, V: voltage, TC: thickness of the anti-corrosion layer; perform according to SY4014-92 acceptance criteria.
(4) Determine the detection voltage based on the experience of glass, generally 8KV~20KV.
(5) Commonly used common fuel gas pipeline 3PE anti-corrosion layer commonly used detection voltage is 15KV.
(6) Other anti-corrosion materials, depending on the design department's design to detect the voltage or the insulation properties of the material itself. (end)
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