Pinhole Detector - Senze-Instruments

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Process & Quality Control

Pinhole Detector

Coatings & Industry > Physical properties > Porosity & Permeability
Pinhole Detector                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
Low Voltage Holiday Detector : Pinhole Tester 9V/67.5V/90V
                            
ISO 29601: Paints and varnishes. Corrosion protection by protective paint systems. Assessment of porosity in a dry film.

The Pinhole Detector uses the wet sponge principle to detect through-pinholes, cracks and damaged areas on non-conductive coatings on conductive substrates.
These flaws would eventually lead to corrosion and premature failure of the coating.
Operation is by a wet sponge, moistened with a wetting agent, being moved over the coating.
The wetting agent penetrates any pinhole and makes a conductive path through to the substrate.
The Pinhole Detector detects this conductive path and indicates that a pinhole has been detected by sounding an audible alarm and giving a visual warning by a red flashing indicator.
The Pinhole Detector has test voltages of 9 Volts, 67.5 Volts and 90 Volts, which are easily selectable.
The Calibration Certificate with traceability to UKAS is an optional extra. The Certificate is supplied as hard copy.
Supplied in an industrial foam-filled Carrying Case with 150mm Sponge Assembly and 5m Earth Cable.
Pinhole Detector Specifications  
Part No        Range            Maximum Test Thickness   Maximum Test Thickness       Maximum Test Thickness       Accuracy     Cal Cert     
                                                     9V                                      67.5V                                                90V                                                Part No
274-S3002   9V/67.5V/90V             300µm                                  500µm                                               500µm                            1%            274-NS002   
274-SA005    Earth Cable 20m   
274-SS004    Spare Earth Cable 5m   
274-SS005    Spare Sponge Assembly 150mm

Pinhole Circular Sponges for the testing of internal diameter of pipes.
  Part No        Product                                 Size             Extension
274-SA601   Circular Sponge and Assembly    50mm           200mm
274-SA602   Circular Sponge and Assembly    100mm         200mm  

Supplied in an industrial Carrying Case with Sponge Assembly and 5m Earth Cable.  
Calibration Certificate is an optional extra.

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