F.A.Q.
When should I use a low-voltage wet sponge detector versus a high-voltage spark tester?
Low-voltage wet sponge detectors (like the PosiTest LPD) are used exclusively on thin coatings under 500 µm (20 mils) where high voltage might arc through sound coating. High-voltage spark testers are required for thicker protective barrier coatings exceeding 20 mils.
How is the correct test voltage calculated for high-voltage Holiday Detectors?
Test voltage is determined by the specific coating thickness and applicable test standards (such as NACE SP0188 or ASTM D5162). Modern instruments like the PosiTest HHD feature a built-in voltage calculator where selecting the standard and entering coating thickness automatically calculates the required voltage.
Why is proper grounding critical during Holiday Detection?
A Holiday Detector completes an electrical circuit through the coating fault to the conductive substrate and back to the instrument earth clamp. If the substrate is not properly grounded to earth or if the ground lead has poor electrical contact, the detector will fail to register pinholes and flaws.
PCWI Compact DC High Voltage Holiday Detector DC15 & DC30
$3,087.00 - $3,468.00
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- PCWI Compact DC High Voltage Holiday Porosity Detectors
- Measuring Ranges:
Model DC15: 0 to 15,000 Volts (DC15IND or DC15PIPE)
Model DC30: 0 to 30,000 Volts (DC30IND or DC30PIPE)
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PCWI Compact Pulse High Voltage Holiday Detectors P20 and P40
$3,468.00 - $3,614.00
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- PCWI Compact Pulse High Voltage Holiday Porosity Detectors
- Measuring Ranges:
Model P20: 2,000 to 20,000 Volts (P20IND or P20PIPE)
Model P40: 5,000 to 40,000 Volts (P40IND or P40PIPE) - Resolution: 100 Volts
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PCWI Compact Wet Sponge Low Voltage Pinhole Tester 0789 WETSPONGE
$583.00
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- PCWI Wet Sponge Pinhole Detector by PCWI 0789 / WETSPONGE
- Measuring Range:
0 to 20 mils (0 to 500 µm) - Test Voltage:
Selectable 9, 67.5 or 90V
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PCWI Compact DC High Voltage Holiday Detector DC15 & DC30
$3,087.00 - $3,468.00
FREE Ground Shipping
About this item
View More Details
- PCWI Compact DC High Voltage Holiday Porosity Detectors
- Measuring Ranges:
Model DC15: 0 to 15,000 Volts (DC15IND or DC15PIPE)
Model DC30: 0 to 30,000 Volts (DC30IND or DC30PIPE)
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PCWI Compact Pulse High Voltage Holiday Detectors P20 and P40
$3,468.00 - $3,614.00
FREE Ground Shipping
About this item
View More Details
- PCWI Compact Pulse High Voltage Holiday Porosity Detectors
- Measuring Ranges:
Model P20: 2,000 to 20,000 Volts (P20IND or P20PIPE)
Model P40: 5,000 to 40,000 Volts (P40IND or P40PIPE) - Resolution: 100 Volts
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PCWI Compact Wet Sponge Low Voltage Pinhole Tester 0789 WETSPONGE
$583.00
FREE Ground Shipping
About this item
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- PCWI Wet Sponge Pinhole Detector by PCWI 0789 / WETSPONGE
- Measuring Range:
0 to 20 mils (0 to 500 µm) - Test Voltage:
Selectable 9, 67.5 or 90V
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PCWI High Voltage DC Crest Meter
$561.00 - $869.00
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- PCWI High Voltage Direct Current Crest Meter, Jeep Meter or Volt Meter
- New Part. No. DCCREST - Old Part No. 1095
- Measuring Range:
0 to 30kV - Manufacturer: PCWI
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PCWI High Voltage Pulse Crest Meter
$602.00 - $1,030.00
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- PCWI High Voltage Pulse Crest Meter, Jeep Meter or Voltmeter
- Measuring Range: 5 to 30kV
- For verifying output voltage and the calibration of PCWI Compact Pulse type Porosity and Holiday Detectors ONLY
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PCWI Circular Pipeline Coils
$128.00 - $454.00
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- Circular Pipeline Coils - Full Circle Spring Electrodes
- Available in diameters of 2" (50mm) to 56" (1420mm)
- Manufacturer: PCWI
- Warranty: One Year
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PCWI Flat Brush Electrodes
$52.00 - $587.00
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- PCWI Flat (Straight) Brush Electrodes for Porosity Holiday Detectors
- Straight Flat Brass Brush Electrodes
- Available in diameters of 2" (50mm) to 24" (600mm)
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PCWI Circular Internal Brush Electrodes
$110.00 - $600.00
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- Internal Circular Brush Electrodes for Porosity Holiday Detectors
- Internal Pipeline Disk & Spiral Wound Brushes
- Available in diameters of 2" (50mm) to 20" (508mm)
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PCWI External Rolling Pipeline Brushes
$279.00 - $920.00
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- External Rolling Pipeline Brushes for Porosity Holiday Detectors
- Available in diameters of 1" (25mm) to 20" (508mm)
- Manufacturer: PCWI
- Warranty: One Year
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PCWI COILJOIN450PRBEXT Coil Joiner with 450mm Probe Extension
$215.00
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- Coil Joiner for PCWI pipeline coils & external pipe brushes with 450mm extension
- A coil joiner (COILJOINERONLY) is required to connect the coil ends together and to the PCWI detector handle
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PCWI PRBHANDLEDC Probe Handle for DC Complete
$282.00 - $386.00
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- Yellow probe handle for the PCWI DC Holiday Detectors
- DC probe handle comes complete with lead, plug, neon holder & neon
- Length of lead, 2m
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PCWI PRBHANDLEPULSE Probe Handle for Pulse Complete
$602.00 - $622.00
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