SANKO ELECTRONIC LABORATORY CO.,LTD. Product Lineup

We would like to introduce the pinhole detectors handled by Sanko Electronic Research Institute, namely 'TRC-250A/250B and TRC-70A/70B'. The "TRC-250A/250B" has a detection voltage of 5 to 25 kV (peak value), and is suitable for coating thicknesses of 1 mm or more. On the other hand, the "TRC-70A/70B" has a detection voltage of 1 to 7 kV (peak value), and is suitable for coating thicknesses of 1 mm or less. 【Specifications (excerpt)】 <TRC-250A/250B> ■ Method: Low-frequency high-voltage pulse discharge type ■ Detection voltage: 5 to 25 kV (peak value) ■ Power supply: Built-in NiMH (nickel-metal hydride) battery (with battery check function) ■ Charging power supply: AC 100-240V, 50/60Hz, 30-20VA ■ Suitable coating thickness: 1 mm or more ■ Dimensions: 370(W) × 190(H) × 150(D) mm ■ Main unit weight: 4.9 kg *For more details, please refer to the PDF document or feel free to contact us.

Introducing the pinhole detector 'TRS-250/70', which operates on a low-frequency high-voltage pulse discharge method. The "TRS-250" has a detection voltage range of 5 to 25 kV (peak value) and a weight of 5.1 kg. The "TRS-70" has a detection voltage range of 1 to 7 kV (peak value) and a weight of 4.1 kg. Standard accessories include a probe storage case, a 5m ground wire, a 5m safety switch wire, and a 2m power cord. 【Specifications (excerpt)】 <TRS-250> ■ Method: Low-frequency high-voltage pulse discharge ■ Detection voltage: 5 to 25 kV (peak value) ■ Power supply: AC100V, 50/60Hz, 20VA ■ Alarm method: Lamp, buzzer ■ Target coating thickness: 1mm or more ■ Operating temperature range: 0 to 40°C (must not condense) ■ Dimensions: 370(W) × 190(H) × 150(D) mm ■ Weight: 5.1 kg *For more details, please refer to the PDF document or feel free to contact us.

The "TO−5DP" is a low-power, direct current high-voltage detector used for detecting pinholes in relatively thin films, such as fluororesin, that are less than a few hundred microns thick. It is effective for detecting pinholes and inspecting defects in thin insulating films of electronic devices and precision instruments. Please utilize it for the inspection of thin films. 【Features】 ■ Low power ■ Direct current high-voltage type ■ Effective for detecting pinholes and inspecting defects in thin insulating films of electronic devices and precision instruments *For more details, please refer to the PDF document or feel free to contact us.

The "Hollister 15N/5N" is a pinhole detector suitable for partial inspections of connection parts, component mounting areas, and deformation processing areas, as well as for full inspections of relatively small objects. This product operates using low-frequency high-voltage pulse discharge and can be used in a temperature range of 0 to 40°C. Additionally, the alarm system includes a lamp and a buzzer. 【Specifications (Excerpt)】 <Hollister 15N> ■ Method: Low-frequency high-voltage pulse discharge ■ Detection Voltage: 5-15kV (peak value) ■ Built-in Power Source: NiMH (Nickel-Metal Hydride) battery (with battery check function) ■ Charging Power Source: AC100V, 50/60Hz, 80VA ■ Usage Time: Approximately 2.5 hours (at maximum output voltage) ■ Alarm Method: Lamp, Buzzer ■ Target Coating Thickness: 0.8-5.0mm ■ Operating Temperature Range: 0-40°C (must not be exposed to condensation) ■ Dimensions: 70 (W) × 120 (H) × 220 (D) mm ■ Main Unit Weight: 1.1kg *For more details, please refer to the PDF document or feel free to contact us.

The "TRK-330N" is a high-output type pinhole detector. This product is specifically powered up for pinhole inspection of thick films and rubber linings. The probe is made of PVC. 【Features】 ■ Specifically for pinhole inspection of thick films and rubber linings ■ High output *For more details, please refer to the PDF document or feel free to contact us.

The "TO-250D" is a high-output pinhole detector for thick film inspection. Since it uses a DC high voltage system, the terminal voltage is stable and it allows for longer cable extensions. It is suitable for detecting pinholes in thick rubber linings, enamel, or semi-defects. 【Features】 ■ For thick film inspection ■ DC high voltage system ■ Stable terminal voltage with long cable extension *For more details, please refer to the PDF document or feel free to contact us.

The "TO-51C/151C/251C" is a pinhole detector specifically designed for concrete substrates. The main unit has been made smaller and lighter, and a new model for thin film inspection has also been introduced. 【Features】 ■ Compact and lightweight (25% reduction in volume compared to the old model) ■ Compatible with power supply voltages from 100V to 240V ■ Non-destructive inspection of pinholes in insulating coatings is possible *For more details, please refer to the PDF document or feel free to contact us.

The "Pinhole Tester PH Series" is a pinhole detector used for detecting and inspecting pinholes in thin insulating coatings generally below 200μm (or 500μm). Due to its low detection voltage, it does not damage the coating, making it widely used for pinhole detection, testing, and inspection of protective films in general vehicles, furniture, fixtures, cans, containers, general construction, building materials, machinery, and structures for rust prevention, corrosion protection, and other applications. 【Features】 ■ Wet electrical resistance method ■ Low detection voltage that does not damage the coating *For more details, please refer to the PDF document or feel free to contact us.

The "HF-20" is a high-frequency, high-voltage lamp checker that uses a Tesla coil. With transistor oscillation, the frequency is stable, allowing for reliable work. It is suitable for detecting leaks in light bulbs and electronic tubes, determining the presence of enclosed gases, as well as detecting leaks in glass ampoules and the glass parts of vacuum devices, and assessing enclosed gases. 【Features】 ■ Uses a Tesla coil ■ Frequency stability with transistor oscillation ■ Enables reliable work ■ Ideal for leak detection in light bulbs and electronic tubes *For more details, please refer to the PDF document or feel free to contact us.

The "Micro Checker KS1" is a pinhole detector suitable for pinhole inspection using water as a resistive medium, or for testing the aging degradation of coatings, resins, etc., due to the extraction of plasticizers. It can be used for products such as paper pack products and plastic or rubber containers. 【Features】 ■ Characteristics not obtained in low voltage testing *For more details, please refer to the PDF materials or feel free to contact us.

The "SPH-12" is a wet-type pinhole detector that uses liquid as a medium. This product allows for variable and adjustable inspection thresholds, improving inspection accuracy. It is also capable of inspecting conductive paint. An optional storage case is also available. 【Features】 ■ Wet-type pinhole detector using liquid as a medium ■ Variable and adjustable inspection thresholds, improving inspection accuracy ■ Capable of inspecting conductive paint *For more details, please refer to the PDF document or feel free to contact us.

The "Pinhole Automatic Continuous Detection Device" continuously and automatically detects pinholes or similar defects in insulating coatings, lining films, taping films, or other insulating films, sheets, and resin products applied to a metal substrate during the manufacturing process, and issues an alarm via a lamp or buzzer, or performs marking and signal processing. 【Inspection Purpose and Targets】 ■ Automatic inspection of pinholes in plastic containers ■ Automatic inspection of pinholes in the coating of painted steel pipes and rebar ■ Automatic inspection of pinholes in the inner seals of containers for soy sauce, cooking oil, etc. ■ Non-contact automatic inspection of pinholes in agricultural vinyl sheets, etc. ■ Automatic pinhole inspection of the inner coating of tubes and cans for food and pharmaceuticals, as well as other insulating coatings, sheets, films, plates, and other molded products. *For more details, please refer to the PDF materials or feel free to contact us.

The "Plastic Container Checker PPC" is a pinhole detector that can easily check containers that are prone to deformation. Sheet-formed containers may experience pinholes and similar defects during the molding process, regardless of whether they are pressure-formed or vacuum-formed. In single containers (such as blow bottles and PET bottles), defects are also likely to occur at parting lines and gates. This product quickly and automatically detects these defects using a high-voltage discharge method. 【Features (compared to conventional air leak checkers)】 ■ Non-contact type - Easily checks containers that are prone to deformation ■ Micro-holes - Instantly checks for micro-holes ■ Semi-defects - Can check for defects that are not complete holes but are likely to become pinholes during the transport process ■ Straight transport - Can be easily mounted on a straight transport device *For more details, please refer to the PDF document or feel free to contact us.

We check for pinholes using a high-voltage application method based on spark discharge. It supports high-speed inspection and has a built-in circuit for detecting high-voltage output abnormalities and disconnections. *For more details, please refer to the PDF document or feel free to contact us.

This product detects seal defects and pinhole defects that are difficult to identify through visual inspection. It allows for inspection of both sides of the product. There is no impact on the contents of the product. Additionally, it is easy to handle and low cost. 【Features】 ■ Detects seal defects and pinhole defects that are difficult to identify through visual inspection ■ Allows for inspection of both sides of the product ■ No impact on the contents of the product ■ Easy to handle ■ Low cost *For more details, please refer to the PDF document or feel free to contact us.

For pinhole inspection after lining and coating processing of rubber, plastic, enamel, and steel pipes, as well as testing of coated wires, etc.

In the chemical industry, the integrity of chemical-resistant coatings is essential to maintain product quality. Particularly for products exposed to corrosive substances, even minor pinholes in the coating can lead to product degradation and safety issues. Our pinhole detector enables non-destructive inspection of pinholes in insulating coatings. 【Application Scenarios】 - Inspection of chemical-resistant coated tanks and pipes - Quality control in chemical plants - Coating evaluation in research and development 【Benefits of Implementation】 - Early detection of coating defects, improving product quality - Non-destructive testing allows for inspection without damaging the inspected items - Reduction in inspection time and cost savings

In the energy industry, ensuring safety and efficient operations is essential. In particular, pinholes that occur in insulation coatings of gas pipes and tanks can lead to leaks and potentially serious accidents. Early detection through non-destructive testing is crucial for reducing the risk of accidents and supporting safe operations. The pinhole detector "TO-51C/151C/251C" inspects pinholes in insulation coatings non-destructively, reducing the risk of leaks. 【Usage Scenarios】 - Inspection of insulation coatings on gas pipes - Inspection of insulation coatings on tanks - Inspection of insulation coatings on plant equipment 【Benefits of Implementation】 - Reduces the risk of accidents due to leaks - Improves equipment safety - Shortens inspection time - Reduces costs