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PosiTest HHD High voltage porosity detector

Made in the USAThe PosiTest HHD is a Pulse Type DC Holiday Detector /Porosity Tester with a user-adjustable voltage range from 0.5 to 35kV for detecting holidays, pinholes and other discontinuities and to inspect non-conductive coatings thicker than 500 µm.

The PosiTest HHD has extensive electrode options and accessories making this high voltage Porosity Tester suitable for a large range of substrates with different coating thicknesses and applications. Typical applications include porosity tests performed on tank interiors, chemical storage, pipelines, vessels and other protective coatings. Furthermore, given that concrete is a slightly conductive substrate, it carries enough current to allow holiday detectors to function. Hence the PosiTest HHD can also be deployed on concrete for continuity testing and holiday detection.

The electrodes of the PosiTest HHD can either be connected directly or by extension (with optional stick accessories). A stick-type porosity tester is a stand-alone tester with internal battery power and electrodes are attached to the end of an extension stick. The rod or belt detectors usually have a separate battery on the belt or shoulder strap and electrodes attached to a hand stick. With the optional hand rod accessories, the PosiTest HHD can be converted into a rod instrument that is suitable for voltages below 15kV.

The PosiTest HHD has two major operating modes, the Standby Mode and the Detection Mode. when in Standby Mode, the detector does not generate a high voltage and when in Detection Mode a high voltage is generated. In this mode analysing electrode voltage and current help to assess if discontinuities (holidays) exist.

The PosiTest HHD is  lightweight, has an ergonomic design for comfortable all-day use and comes with a warranty of 2 years.

  • Conforms to ASTM D4787/D5162/G62, ISO 29601, NACE SP0188/SP0274/SP0490, AS3894.1
  • Includes NIST Traceable Long Form Calibration Certificate
  • Voltage calculator feature — choose one of 11 international standards, and input the coating thickness to automatically calculate the required test voltage
  • Choose from a wide range of rolling spring and flat wire brush electrodes or use electrodes from other manufacturers with optional adaptors — custom sizes available upon request
  • Industry-standard connectors and adaptors for compatibility with nearly all existing electrodes
  • Rugged, environmentally sealed ABS plastic enclosure is weatherproof, dustproof and shockproof
  • Lightweight, ergonomic design provides comfortable all-day use, reducing operator fatigue
  • Removable Smart lithium-ion battery provides power for up to 40 hours of continuous measurement
  • Shock proof/creep proof — internally sealed to minimize creep distance to high voltage components. Designed in accordance with IEC 61010-1
  • Built-in certified voltmeter (crest meter, jeep meter) displays and regulates the voltage at the electrode


Complete Kit

PosiTest HHD is supplied as a complete kit including:

  • 7.6 mtr. ground (earth) cable with ground clip
  • Li-ion battery pack with built-in charge state indicator
  • Smart charger with universal AC voltage input
  • Stainless steel fan brush - HHDFANBRUSH - 5cm
  • 50 cm (20" ) extension rod with thumb screw
  • Shoulder strap
  • Long Form Certificate of Calibration traceable to NIST
  • Instruction Manual
  • Durable Pelican Storm case

Coating Thickness Range*: up to 20 mm - *Based on NACESP0274-2011 recommendations
Pulse Repetition Rate: 30 Hz
Output Voltage Range: 500 Volt - 35.000 Volts / 0.5 – 35 kV
Output Voltage Adjustment: 500 Volt - 35.000 Volts / 0.5 – 35 kV
Output Accuracy: +/-5%
Pulse Duration: 10 µs
Battery: Rechargeable Smart 72Wh Li-ion battery
Battery duration: Rechargeable Smart 72Wh Li-ion battery
Battery Life: Based on selected voltage and load:
Ø 12” Rolling Spring @ 10kV, 40 hrs. / Ø 40” Rolling Spring @ 10kV, 30 hrs.
Charge Time: 3 hours
Operating Temperature: -20° to 60°C
Unit Size: 64 cm x 6.4 cm x 13 cm
Unit weight: 1,8 kg with battery (without electrodes)
Warranty: 2 years

Coil electrodes

PosiTest HHD Coils

Please Note: Each spring includes two pre-installed spring couplers. A spring connector (HHDCONNECT) is required to attach the PosiTest HHD to the spring couplers. Custom sizes and bulk pricing available. Additional couplers (HHDCOUPLER - 2 pack) are available.

Flat Wire Brush Electrodes

PosiTest HHD Flat Wire Brush Electrodes

Buy Now

Product name
PosiTest HHD DC Pulse Holiday Detector Complete Kit
£ 2.853,00 
All mentioned prices are excluding VAT & excluding shipment costs.
Availability : Available , preorder 1-2 weeks , special order, request

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