ILSIN Porotest-DC High-Voltage Pinhole Detector
| [Origin | Germany |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported Instrument |
| Model | Porotest-DC |
| Pricing | Available Upon Request |
| Voltage Range | 0.5–3 kV (DC-3), 2–15 kV (DC-15), 5–35 kV (DC-35) |
| Coating Thickness Detection Range | 50–500 µm (DC-3), 0.3–4 mm (DC-15), 1–11 mm (DC-35) |
| Display | 3-digit LCD with real-time test voltage indication |
| Accuracy | ±(0.1 kV + 5% of reading) |
| Audible Alarm | 90 dB, 0.1 s per pinhole, short-circuit alert |
| Output Signal | Galvanically isolated, Uₘₐₓ = 100 V, Iₘₐₓ = 0.4 A, Pₘₐₓ = 10 W |
| Power Supply | 12 V DC rechargeable battery |
| Battery Runtime (Max Voltage) | ~10 h (DC-3), ~5 h (DC-15), ~3 h (DC-35) |
| Charging Time | ~13 h (full charge) |
| Operating Temperature | 0–50 °C |
| Storage Temperature | −20–60 °C |
| Humidity | Non-condensing environment recommended |
| Compliance | DIN 55670, VDE 0411 Part 1 |
| Accessories | ULIMATIC 800 charger (115 V/60 Hz or 230 V/50 Hz |
Overview
The ILSIN Porotest-DC High-Voltage Pinhole Detector is a portable, battery-powered instrument engineered for non-destructive detection of discontinuities—such as pinholes, cracks, voids, and thin spots—in non-conductive protective coatings applied to conductive substrates. Based on the principle of high-voltage DC spark testing, the Porotest-DC applies a controlled, adjustable direct current voltage across the coating surface via a scanning electrode. When the electric field strength exceeds the dielectric breakdown threshold at a defect site, a transient spark discharge occurs, triggering an audible alarm and visual indicator. This method conforms to standardized electrical integrity verification protocols widely adopted in corrosion protection engineering, pipeline maintenance, tank lining inspection, and industrial coating QA/QC workflows.
Key Features
- Three interchangeable high-voltage generator modules (DC-3, DC-15, DC-35) enabling precise voltage selection matched to coating thickness—ensuring optimal sensitivity without substrate damage or false positives.
- Real-time 3-digit LCD display showing actual applied test voltage, eliminating ambiguity during field calibration and multi-layer inspection.
- Galvanically isolated signal output (Umax = 100 V, Imax = 0.4 A) compatible with external data loggers or PLC interfaces for traceable inspection records.
- Robust, ergonomic housing rated for industrial environments: IP54 ingress protection, shock-absorbing casing, and low-temperature operational capability down to 0 °C.
- ULIMATIC 800 universal charger supporting dual-input AC mains (115 V/60 Hz or 230 V/50 Hz), enabling continuous operation during extended shifts or laboratory bench use.
- Integrated short-circuit and over-current protection circuits, compliant with VDE 0411 Part 1 safety requirements for handheld high-voltage equipment.
Sample Compatibility & Compliance
The Porotest-DC is validated for use on epoxy, polyurethane, rubber-lined, glass-flake, and fusion-bonded epoxy (FBE) coatings applied to steel, aluminum, concrete-reinforced substrates, and other electrically grounded surfaces. It requires prior measurement of dry film thickness (DFT) using a calibrated magnetic induction or eddy current gauge—coating thickness directly determines the appropriate voltage range per DIN 55670 Annex B. The instrument meets DIN 55670 (Testing of non-conductive coatings on conductive substrates using high-voltage methods) and complies with VDE 0411 Part 1 for electrical safety. While not intrinsically safe, it is routinely deployed in Zone 2 hazardous areas when operated under documented risk assessment and grounding protocols. No FDA 21 CFR Part 11 or GLP audit trail functionality is embedded, as the device operates as a standalone analog detection tool without onboard data storage.
Software & Data Management
The Porotest-DC operates as a self-contained hardware detector with no embedded firmware, operating system, or proprietary software suite. All voltage control, alarm triggering, and display functions are implemented via analog circuitry and discrete logic—ensuring long-term reliability, immunity to cybersecurity threats, and zero dependency on driver installation or OS updates. For digital recordkeeping, users integrate the galvanically isolated output signal into third-party systems: programmable logic controllers (PLCs), industrial HMIs, or PC-based DAQ platforms (e.g., National Instruments LabVIEW or MATLAB Data Acquisition Toolbox). Timestamped pass/fail events may be logged alongside GPS-tagged location metadata when paired with external mobile inspection applications—supporting ASME B31.4/B31.8 compliance reporting and ISO 12944-6 coating quality audits.
Applications
- Pre-commissioning inspection of internal linings in storage tanks, reactors, and piping systems per API RP 571 and NACE SP0188.
- Quality assurance of thermal-spray ceramic or polymer coatings on turbine blades and compressor housings.
- Field verification of FBE and 3LPE coatings on buried pipeline girth welds prior to backfilling.
- Validation of anti-corrosion coatings on offshore platform structural members exposed to marine splash zones.
- In-process testing during shop-applied coating lines where rapid, operator-portable verification replaces destructive cross-section analysis.
FAQ
How do I select the correct voltage range for my coating?
Select the generator module (DC-3, DC-15, or DC-35) based on measured dry film thickness (DFT) using a certified coating thickness gauge. Refer to DIN 55670 Table 1: 50–500 µm → DC-3; 0.3–4 mm → DC-15; 1–11 mm → DC-35.
Can the Porotest-DC be used on non-grounded substrates?
No. The instrument requires a reliable electrical ground connection to the conductive substrate. Ungrounded or insulated substrates will prevent spark formation and yield false-negative results.
Is battery replacement user-serviceable?
Yes—the sealed 12 V rechargeable battery pack is accessible via two screws on the rear panel and may be replaced with OEM-specified units (ILSIN part no. BAT-PORO-12V-7Ah) without recalibration.
Does the device support automated pass/fail reporting?
Not natively. Pass/fail status is indicated by audible alarm and LED flash only. Automated logging requires integration with external data acquisition hardware.
What environmental conditions limit field use?
Avoid operation in condensing humidity or ambient temperatures below 0 °C or above 50 °C. Surface moisture or frost must be removed prior to testing to prevent arcing across wet film and erroneous alarms.
