NM01POSITESTHHD
DeFelsko PosiTest HHD High Voltage Holiday Detector
The DeFelsko PosiTest HHD is a robust and reliable High Voltage Holiday Detector engineered for the critical task of inspecting non-conductive coatings on conductive substrates. This pulse DC holiday detector ensures the integrity of protective coatings by precisely locating pinholes, voids, and other discontinuities (holidays) that could lead to premature coating failure and substrate corrosion. Widely used in industries requiring high-performance protective coatings, such as oil & gas, marine, infrastructure, and pipeline.
Key Features & Benefits:
Wide, Adjustable Voltage Range: Offers a broad, user-adjustable voltage range from 0.5 kV (500 Volts) up to 35 kV (35,000 Volts), making it suitable for a vast array of coating thicknesses, typically from 500 µm (20 mils) up to 20 mm (780 mils). Voltage adjustments are precise, in 10-volt steps from 0.5 kV to 1 kV, and 100-volt steps from 1 kV to 35 kV.
Regulated Pulsed DC Output: Provides a stable and consistent output voltage that does not drop under load, ensuring accurate and repeatable test results, even on varying substrate conditions.
Built-in Voltage Calculator: Simplifies setup by automatically calculating the required test voltage based on selected international standards (e.g., ASTM, NACE, ISO) and the input coating thickness.
Audible and Visual Alarms: Features a loud audible alarm and a bright strobe light indicator that activate immediately upon detection of a holiday, ensuring operators are alerted even in noisy environments. The audio alarm mode can be adjusted.
Ergonomic and Lightweight Design: At approximately 1.8 kg (4 lbs) with battery, its one-piece, ergonomic design provides comfortable, all-day use, reducing operator fatigue without requiring a shoulder bag.
Comprehensive Electrode Compatibility: Comes with industry-standard connectors and is compatible with a wide range of rolling spring electrodes, flat wire brushes, and fan brushes (available in various sizes), and can also adapt to electrodes from other manufacturers.
Removable Smart Lithium-Ion Battery: Powered by a high-capacity 72 Wh Li-ion battery, providing up to 40 hours of continuous measurement (depending on voltage and load). The smart battery features a built-in charge state indicator.
Enhanced Safety Features: Includes a "Press and Hold Safety Trigger" to prevent accidental high voltage generation, a 7.6 m (25') ground (earth) cable with a locking connector and spring clamp, and is internally sealed (shockproof/creep-proof) in accordance with IEC 61010-1 standards to minimize creep distance to high voltage components.
Built-in Certified Voltmeter: Displays and regulates the voltage at the electrode, ensuring accuracy (±5%). A Long Form Certificate of Calibration traceable to NIST is included with each instrument.
Rugged Construction: Housed in a weatherproof, dustproof, and shockproof ABS plastic enclosure, designed for harsh field conditions.
Industry Compliance: Conforms to major national and international standards including ISO 29601, ASTM D4787, ASTM D5162, ASTM G62, NACE SP0188, NACE SP0274, NACE SP0490, and AS3894.1.
Typical Components of a Full Kit:
PosiTest HHD Detector Unit
Removable 72 Wh Li-ion Battery Pack with Charge Indicator
Smart Battery Charger with Universal AC Voltage Input
7.6 m (25') Ground (Earth) Cable with Ground Clip
Stainless Steel Fan Brush (e.g., 5cm/2")
Electrode Rod (e.g., 50 cm/20") with Thumb Screw
Shoulder Strap
Instruction Manual
Long Form Certificate of Calibration traceable to NIST
Durable Pelican Storm Case with Custom Foam Inserts
Specifications:
Manufacturer: DeFelsko Corporation
Model: PosiTest HHD (High Voltage Holiday Detector)
Output Voltage Range: 0.5 kV to 35 kV (500 V to 35,000 V)
Output Voltage Accuracy: ±5%
Pulse Duration: 10 µs
Pulse Repetition Rate: 30 Hz
Coating Thickness Range: Up to 20 mm (780 mils)
Battery Type: Removable Smart 72 Wh Lithium-Ion Battery
Typical Battery Life: Up to 40 hours (depending on voltage and load)
Charge Time: Approx. 3 hours
Operating Temperature: −20∘C to 60∘C (−4∘F to 140∘F)
Unit Dimensions (L x W x H): 64 cm x 6.4 cm x 13 cm (25" x 2.5" x 5")
Unit Weight (with battery, no electrodes): 1.8 kg (4 lbs)
Warranty: 2-year warranty (from DeFelsko)