Rolling Spring Electrodes
Model No. :
Brand : Defelsko
The Rolling Spring Electrodes are specialized accessories engineered for high-voltage holiday detection on cylindrical coated surfaces, primarily pipes and conduits. Constructed from durable stainless steel, these coils are designed to maintain full, reliable electrical contact across the pipe circumference as they are manually rolled along its length. This ensures surface coverage and accurate identification of pinholes or discontinuities in protective coatings.
- Stainless steel spring coil construction
- Specifically designed for pipe outer diameter
- Ensures full electrical contact across curvature
− Features
- Conforms to Curved Surfaces: The electrode’s coiled spring design allows it to maintain consistent contact across the curvature of the pipe, which is critical for reliable electrical connection and flaw detection during the rolling motion.
- Corrosion-Resistant Material: Fabricated from robust stainless steel, the springs resist degradation and corrosion in harsh industrial environments, ensuring long service life and consistent conductivity.
- Pre-Installed Couplers: Each spring electrode includes two pre-installed spring couplers, simplifying the connection process and ensuring a secure mechanical and electrical link to the required HHD Spring Connector (sold separately).
- Wide Range of Pipe Sizes: Available in a large assortment of sizes, specifically manufactured to match common pipe outer diameters ( to ), ensuring a perfectly tailored electrode for every job.
- Universal Compatibility: Designed with industry-standard connectors, these rolling springs are compatible not only with the PosiTest HHD and HHD C series but also with holiday detectors from other major manufacturers using optional adaptors.
+ Technical Specifications
+ Application & Standards
+ Resources
+ FAQs
Features
- Conforms to Curved Surfaces: The electrode’s coiled spring design allows it to maintain consistent contact across the curvature of the pipe, which is critical for reliable electrical connection and flaw detection during the rolling motion.
- Corrosion-Resistant Material: Fabricated from robust stainless steel, the springs resist degradation and corrosion in harsh industrial environments, ensuring long service life and consistent conductivity.
- Pre-Installed Couplers: Each spring electrode includes two pre-installed spring couplers, simplifying the connection process and ensuring a secure mechanical and electrical link to the required HHD Spring Connector (sold separately).
- Wide Range of Pipe Sizes: Available in a large assortment of sizes, specifically manufactured to match common pipe outer diameters ( to ), ensuring a perfectly tailored electrode for every job.
- Universal Compatibility: Designed with industry-standard connectors, these rolling springs are compatible not only with the PosiTest HHD and HHD C series but also with holiday detectors from other major manufacturers using optional adaptors.
Technical Specifications
| Rolling Spring Coil for 4″ pipe (102 mm) OD | HHDSPRING4 |
| Rolling Spring Coil for 6″ pipe (152 mm) OD | HHDSPRING6 |
| Rolling Spring Coil for 8″ pipe (203 mm) OD | HHDSPRING8 |
| Rolling Spring Coil for 10″ pipe (254 mm) OD | HHDSPRING10 |
| Rolling Spring Coil for 12″ pipe (304 mm) OD | HHDSPRING12 |
| Rolling Spring Coil for 14″ pipe (356 mm) OD | HHDSPRING14 |
| Rolling Spring Coil for 16″ pipe (406 mm) OD | HHDSPRING16 |
| Rolling Spring Coil for 20″ pipe (508 mm) OD | HHDSPRING20 |
| Rolling Spring Coil for 24″ pipe (610 mm) OD | HHDSPRING24 |
| Rolling Spring Coil for 30″ pipe (762 mm) OD | HHDSPRING30 |
| Rolling Spring Coil for 36″ pipe (914 mm) OD | HHDSPRING36 |
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.
Application & Standards
Rolling Spring Electrodes are the definitive tool for performing high-voltage holiday detection on the external surfaces of pipelines, pipes, and other cylindrical components. They are critical in oil and gas, petrochemical, and water infrastructure industries for validating the integrity of protective coatings on pipelines before burial or final service deployment.
Accessories
Software
FAQs
Which type of surface are Rolling Spring Electrodes designed for?
They are specifically designed for the cylindrical outer surfaces of pipes and tubing, ensuring the electrode maintains full, continuous electrical contact as it rolls.
What material are the Rolling Spring Electrodes made from?
The electrodes are constructed from stainless steel, offering excellent conductivity and resistance to corrosion for reliable performance.
Are custom sizes available for non-standard pipe diameters?
Yes, while a wide range of standard sizes is available ( to ), custom electrode sizes can be ordered upon request to fit unique pipe dimensions.
What accessory is needed to connect the spring to the PosiTest HHD?
A separate accessory, the Spring Connector (HHDCONNECT), is required to securely attach the pre-installed spring couplers on the electrode to the PosiTest HHD or HHD C detector.
How do Rolling Spring Electrodes ensure a complete inspection?
Their design guarantees that the entire circumference of the coated pipe is simultaneously subjected to the high voltage as the electrode is rolled, ensuring surface coverage for flaw detection.
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