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PosiTest® HHD Series

High voltage Holiday Detectors

Detects holidays, porosity, pinholes, leaks, and other discontinuities in coatings, linings, and membranes using pulse or continuous DC

  • Available as a stick-type with pulsed DC or a compact wand style with continuous DC
  • Lightweight, ergonomic design provides comfortable all-day use, reducing operator fatigue
  • Regulated pulse or continuous DC voltage output that won't change under load— ±5% voltage accuracy
  • Voltage calculator feature—input the coating thickness to automatically calculate the required test voltage
  • Extensive electrode options—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
  • Long Form Certificate of Calibration included with each instrument
Made in USA flag with black text below
Conforms to ASTM D4787/D5162/D6747/D7953/G62, ISO 29601, NACE SP0188/SP0274/SP0490, AS3894.1

Features

Simple

  • Easy-to-use with bright, color LCD
  • Ready to measure—includes everything needed for testing
  • Audibly and visibly alerts when flaws/holidays are detected
  • Lightweight, ergonomic design provides comfortable all-day use, reducing fatigue
  • Voltage calculator feature—input the coating thickness to automatically calculate the required test voltage

Durable

Accurate

  • Built-in certified voltmeter (crest meter, jeep meter) displays and regulates the voltage at the electrode
  • Long Form Certificate of Calibration included with each instrument
  • Conforms to national and international standards including ISO, ASTM, and NACE

Powerful

  • Strobe light and loud audible alarms emitted when a holiday is detected.
  • Loud audio alarm remains audible in noisy environments
  • Removable Smart lithium-ion battery

Safe

  • Press-and-hold Safety Trigger helps prevent accidental high voltage generation
  • 7.6 m (25') ground (earth) cable with locking connector and spring clamp
  • Shock proof/creep proof—internally sealed to minimize creep distance to high voltage components. Designed in accordance with IEC 61010-1.

Versatile

  • A wide range of rolling spring electrodes and wire brushes are available. Custom sizes available upon request.
  • Industry-standard connectors and adaptors for compatibility with nearly all existing electrodes

All kits come complete with Holiday detector, 7.6 m (25') ground (earth) cable with ground clip, Li-ion battery pack, smart charger with universal AC voltage input, stainless steel fan brush, instructions, durable hard shell case, Long Form Certificate of Calibration traceable to NIST, two (2) year warranty.

Specifications

Specifications

PosiTest HHD Kit

PosiTest HHD Basic Kit

DC Output

PosiTest HHD C Kit

Pulsed

Output Voltage Adjustment

0.5 kV — 1 kV: 10 Volt Steps

>1 kV: 100 Volt Steps

Output Accuracy

Continuous

Output Voltage Range

±5%

0.5 — 35 kV

Pulse Duration

0.5 — 30 kV

10 μs

Pulse Repetition Rate

30 Hz

Battery Size

72 Wh Li-ion

36 Wh Li-ion

Typical Battery Life
for selected rolling springs @ 10 kV
Ø 12"
Ø 40"
Operating Temperature

40 hrs.

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16 hrs.

30 hrs.

12 hrs.

-20° to 60°C (-4° to 140°F)

Unit Weight
Case

1.6 kg (3.6 lbs.)

Pelican Storm extreme duty waterproof case

Heavy duty hard-shell case

1.5 kg (3.3 lbs.)

Included Electrode Rod

50 cm (20")

13 cm (5")

Shoulder Strap

Included

Optional

Case Dimensions

101 x 46 x 18 cm (40" x 18" x 7")

104 x 39 x 14 cm (41" x 15.5" x 6")

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4 Li-ion 18650 Batteries

0.74 kg (1.63 lbs.)

46 x 33 x 18 cm (18" x 13" x 7")

Unit Dimensions

64 cm x 6.4 cm x 13 cm

(25" x 2.5" x 5")

33 cm x 10.8 cm x 8 cm
(13" x 4.25" x 3.1")

PosiTest HHD Stick-Type

Detects holidays using pulsed DC

  • User adjustable voltage range from 0.5 — 35 kV
  • Voltage calculator feature—choose one of 11 international standards, and input the coating thickness to automatically calculate the required test voltage
  • Optional handheld wand accessory converts the detector into a wand configuration ideal for testing hard-to-reach areas (suitable for voltages < 15 kV)
  • Audio alarm mode can be adjusted for differing environments

UNIT SIZE:
64 cm x 6.4 cm x 13 cm
(25" x 2.5" x 5")

UNIT WEIGHT:
1.6 kg (3.6 lbs.)
with 72 Wh battery (no electrodes)

Available in 2 kit configurations:

PosiTest HHD Kit

Includes ALL features shown above plus...

  • Pelican Storm hard shell case with custom foam inserts for maximum protection
  • 72 Wh Li-ion battery with built-in charge state indicator
  • Choice of 50 cm (20") or 13 cm (5") electrode rods
  • Shoulder strap

PosiTest HHD Basic Kit

Includes ALL features shown above plus...

PosiTest HHD C Compact Wand Style

Detects holidays using continuous DC

PosiTest HHD C Kit

Includes ALL features shown above plus...

  • Lightweight, one-piece ergonomic design provides comfortable all-day use, reducing operator fatigue
  • No shoulder bag required! All electronics, batteries, and connectors are integrated into a single handheld wand
  • User adjustable voltage range from 0.5 — 30 kV
  • Powerful Li-ion batteries fit neatly within the compact wand handle eliminating the need for a separate battery box—reducing weight and operator fatigue
  • 43 cm (17") extension rod available for detection on floors and hard-to-reach areas

UNIT SIZE:
33 cm x 10.8 cm x 8 cm
(13" x 4.25" x 3.1")

UNIT WEIGHT:
0.74 kg (1.63 lbs.)
with batteries (no electrodes)

Kits

Select from 3 PosiTest HHD Kit Options...

Available in kits as a stick-type with pulsed DC or a compact wand style with continuous DC.

PosiTest HHD Kit
PosiTest HHD Kit
HHDKIT*
DC Output
Pulsed
Batteries
72 Wh Li-ion
Case type
Pelican
Electrode rod
50 cm (20")
View PDFAdd to Instant Quote
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In Stock
Same-day shipping if ordered by 2PM EST
PosiTest HHD Kit
PosiTest HHD Basic Kit
HHDKITB
DC Output
Pulsed
Batteries
36 Wh Li-ion
Case type
Hard Shell
Electrode rod
13 cm (5")
View PDFAdd to Instant Quote
Green check graphic denoting that an item is in stock
In Stock
Same-day shipping if ordered by 2PM EST
PosiTest HHD Kit
PosiTest HHD C Kit
HHDCKIT
DC Output
Continuous
Batteries
18650 Li-ion (4)
Case type
Hard Shell
Extension rod
not required
View PDFAdd to Instant Quote
Green check graphic denoting that an item is in stock
In Stock
Same-day shipping if ordered by 2PM EST

*To substitute a 13 cm (5") Short Electrode Rod, append '-S' to the product code (i.e. HHDKIT-S)

Electrodes

Rolling spring electrodes for PosiTest HHD
Rolling Spring Electrodes
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Flat Wire Brush Electrodes for PosiTest HHD
Flat Wire Brush Electrodes
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Flat Wire Brush Electrodes for PosiTest HHD
Half-circle Brush Electrodes
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Videos

Video Thumbnail
PosiTest HHD High voltage Holiday Detector - Testing Coatings for Pinholes and Voids

F.A.Q.

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What is a holiday detector?

A holiday detector is a non-destructive instrument for detecting discontinuities in a coating system including holidays, pinholes, and cracks. Other names include porosity detector, continuity tester, holiday tester, and leak detector.

There are two types of pinhole detectors: low voltage (wet sponge) and high voltage (spark tester). Low voltage detectors, like the PosiTest LPD, are typically used on coating systems less than 500 µm (20 mils) thick. High voltage spark testers, like the PosiTest HHD and the PosiTest HHD C operate at voltages up to 35,000V and are typically used on coatings more than 250 µm (10 mils) thick.

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What is meant by the term 'stick type' or 'wand' holiday detector?

A 'stick type' holiday detector is a standalone detector with internal battery power and electrodes that attach to the end of an electrode rod (stick). 'Wand' or 'Belt-style' detectors typically have a separate battery pack carried on the belt or shoulder strap and electrodes that attach to a handheld wand. The NEW PosiTest HHD C is a compact wand-style holiday detector that does not require a separate battery pack. The lithium ion batteries fit neatly within the handle.

The PosiTest HHD is the first combination stick type/wand type instrument on the market. With the optional handheld wand accessory, the PosiTest HHD converts into a wand-style instrument suitable for voltages less than 15k.

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How is a high-voltage test performed?

A high-voltage holiday test is performed by moving a charged electrode over the coated surface. When a holiday is encountered, current flows from the electrode into the substrate. The current returns to the detector through the ground (earth) wire, completing the circuit and triggering audible and visible alarms. An integrated peak reading voltmeter measures and displays the output voltages on the display while in use.

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Why is porosity measurement important?

After a protective coating has been applied, it is important to ensure that there are no defects or discontinuities present that expose the substrate beneath. Small areas of thin or missing coating, called 'pinholes' or 'holidays', can become foci for corrosion and drastically reduce the life of a protective coating system. They can be invisible to the naked eye. Porosity detectors are often used in applications where corrosion is difficult to monitor, or in aggressive service environments where performance of the protective coating is critical.

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How does the PosiTest HHD measure coatings on concrete?

When measuring coating thickness, concrete is not considered a 'conductive' substrate, as it is much less conductive than metal. However, concrete is still slightly conductive, and can carry enough current to allow holiday detectors to function. Therefore, for the purposes of holiday detection, concrete is considered a 'conductive' substrate.

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Are custom size electrodes available?

Yes. DeFelsko manufactures a wide variety of rolling spring and flat wire brush electrodes. Custom sizes are available upon request.

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Are internal pipe, half-circle, and other types of electrodes available?

Flat brush and spring electrodes will be available in pre-stocked and custom lengths, in addition to the handheld rubber paddle and fan brush. DeFelsko plans to add additional types of electrodes in the future, based on demand. If you have a request for an electrode configuration not currently offered by DeFelsko, please let us know.

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What electrodes are compatible with the PosiTest HHD and PosiTest HHD C?

The PosiTest HHD series offers industry-standard connectors and adaptors for compatibility with nearly all existing electrodes including SPY, PCWI, Tinker & Rasor, and 266/280.

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Are PosiTest HHD Verifiers necessary to use the PosiTest HHD or HHD C High voltage Holiday Detectors?

No. The PosiTest HHD series feature a built-in voltmeter (crest meter, jeep meter) with a traceable Long Form Certificate of Calibration. However, some standards call for a standalone voltmeter.

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Is the PosiTest HHD or PosiTest HHD C compatible with PosiSoft solutions?

No. The PosiTest HHD and PosiTest HHD C do not record data and are not compatible with PosiSoft Software.

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How is the PosiTest HHD series calibrated at DeFelsko?

Both the PosiTest HHD and PosiTest HHD C are calibrated using instruments traceable to a National Metrology Lab. A Long Form Certificate of Calibration containing actual measure values is included with every instrument.

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Are there any special shipping considerations for the Lithium-Ion batteries in the PosiTest HHD and PosiTest HHD C?

The PosiTest HHD and PosiTest HHD C may be shipped with two additional spare batteries (or sets of batteries for the HHD C) when charged to less than 30% of capacity. They can be shipped via surface and air transport on the major carriers (UPS, FedEx, and DHL) to all countries, subject to additional labelling requirements.

Note: When returning the PosiTest HHD for service or repair, DO NOT include any batteries.

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Why is leak detection important?

Leak detection serves an important function in reducing the likelihood of costly leaks in construction, mining, and other water or liquid containment industries. Whether it’s a new roof, leach pad, processing pond, or a landfill—locating defects in geomembranes (and similar materials) help reduce potentially costly remediation and environmental damage.

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How do I choose between the PosiTest HHD and the PosiTest HHD C?

The PosiTest HHD High voltage Holiday Detector series is offered in 2 configurations — stick-type with pulsed DC output or wand-style with continuous DC. Both models feature adjustable voltage, built-in certified voltmeters, and compatibility with nearly all existing (competitive) electrodes.

The PosiTest HHD stick-type detector uses pulsed DC to detect holidays and other discontinuities.

Features include:

  • Ergonomic two-handed, stick-type detector for comfortable all day use
  • Voltage calculator feature — choose from 11 international standards and input the coating thickness to calculate the required test voltage
  • User adjustable voltage range from 0.5 to 35 kV
  • Optional handheld wand accessory converts the detector into a wand configuration for testing hard-to-reach areas
  • Pulse technology prevents buildup of charge on the surface and allows grounding using a 'trailing lead'

The compact PosiTest HHD C wand-style detector uses continuous DC.

Features include:

  • Lightweight, compact one-handed instrument eliminates operator fatigue
  • Voltage calculator feature automatically calculates the required test voltage using an equation from the upcoming revision of ASTM and NACE standards
  • User adjustable voltage range from 0.5 to 30 kV
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What is the difference between the PosiTest HHD Verifier and the PosiTest HHD C Verifier?

The PosiTest HHD Verifier is a calibrated voltmeter (crest meter, jeep meter) ideal for verifying the operating voltage of ALL Pulse type holiday detectors in the range from 500 to 35,000 Volts.

The PosiTest HHD C Verifier is a calibrated voltmeter (crest meter, jeep meter) ideal for verifying the operating voltage of ALL Continuous type holiday detectors in the range from 500 to 30,000 Volts.

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Still need help?

Before returning your gage or instrument for service, review the troubleshooting steps on the Troubleshooting guide, or speak with a member of our technical support team by calling +1-315-393-4450.

Accessories

Flat Wire Brush ElectrodesFlat Wire Brush Electrodes

Stainless steel flat wire brush electrodes for PosiTest HHD series — assorted sizes available: 5 to 120 cm (2 – 48”)

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Rolling Spring ElectrodesRolling Spring Electrodes

Steel pipe electrodes for PosiTest HHD series — assorted sizes available: 10 to 91 cm (4 – 36”) Rolling springs include two pre-installed spring couplers.

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PosiTest HHD VerifiersPosiTest HHD Verifiers

Standalone voltmeter (crest meter, jeep meter) for verifying the accuracy and operation of pulse or continuous type DC holiday detectors

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HHD Half-Circle Neoprene Brush 50–127mm/2-5"HHD Half-Circle Neoprene Brush 50–127mm/2-5"

Neoprene half-circle brush electrode for PosiTest HHD series—good for pipes 50 to 127 mm / 2 to 5 inches

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Electrode AdaptorsElectrode Adaptors

Connect to spring and brush electrodes to PosiTest HHD from other manufacturers

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Replacement Fan Brush ElectrodeReplacement Fan Brush Electrode

Stainless steel fan brush for PosiTest HHD series — 152 mm (6”)

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Spring ConnectorSpring Connector

Connect the PosiTest HHD to DeFelsko or SPY rolling spring electrodes

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Electrode RodsElectrode Rods

Choose between 13 cm (5") and 50 cm (20") rods for PosiTest HHD

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Extension RodExtension Rod

43 cm (17") Extension Rod for PosiTest HHD C

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Replacement Spring CouplersReplacement Spring Couplers

Thread onto rolling springs and attach to the Spring Connector for the PosiTest HHD series

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Conductive Rubber PaddleConductive Rubber Paddle

102mm/4" Conductive Rubber Paddle for PosiTest HHD

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Handheld WandHandheld Wand

Converts the PosiTest HHD to a wand-type instrument

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Replacement BatteriesReplacement Batteries

Replacement Li-ion batteries for the PosiTest HHD series

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Shoulder StrapShoulder Strap

Shoulder strap for the PosiTest HHD Basic Kit

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