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Surface Pressure Distribution Map of the MOV Blocks Contacting Each Other
Pressurex pressure indicating sensor film is a diagnostic tool used for troubleshooting and maintenance. It reveals surface pressure distribution and magnitude between the MOV-blocks and the terminations in your high power arrestor application.
Why
- Longevity of the arrestor is greatly improved when a lightening strike’s current is homogeneously distributed across the entire surface area of each of the MOV contacts.
- Total device failure can occur if there is insufficient pressure holding the stack together.
- Current limited by high pressure "hot spots" reduces the protection level of the arrestor.
- Using Pressurex ensures proper compression load level as well as distribution of that load (uniformity).
- Pressurex sensor film applied during testing and analysis helps ensure a maximally performing protection device.
To ensure long arrestor lifetime, the MOV’s disks need to be sufficiently compressed together to withstand multiple lightening strikes.
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Micro (Shows relative pressure distribution only) |
2 - 20 PSI (0.14 - 1.4 kg/cm²) |
Zero |
7.2 - 28 PSI (0.5 - 1.97 kg/cm²) |
Ultra Low |
28 - 85 PSI (2 - 6 kg/cm²) |
Super Low |
70 - 350 PSI (5 - 25 kg/cm²) |
Low |
350 - 1,400 PSI (25 - 100 kg/cm²) |
Medium |
1,400 - 7,100 PSI (100 - 500 kg/cm²) |
High |
7,100 - 18,500 PSI (500 - 1,300 kg/cm²) |
Super High |
18,500 - 43,200 PSI (984 - 3,000 kg/cm²) |
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Temperature Range |
41 - 95oF (5 - 35oC) higher for brief exposure |
Humidity Range |
20 to 90% RH |
Gauge (Thickness) |
4, 8, 20 mils |
Spatial Resolution |
5 to 15 microns |
Substrate |
Polyethylene Terephthalate (PET) |
Accuracy |
± 10% visual, ± 2% utilizing optical measurement systems |
Shelf Life |
2 Years |
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Refer to our applications menu for more detail on uses of Pressurex® for pressure measurement.
NOTE: You may also have read about pressure sensitive paper, tactile pressure indicating sensor film, pressure sensitive film, Fuji Paper or Fuji Prescale. These terms are synonymous with our Pressurex® pressure indicating film. |
Surge Arrestor