Leakage Sensor Type SVT 05
The STRIKO leakage alarm SVT 05 represents the meaningful further development and indispensable supplement of the proven STRIKO alarm SVT 02. It is furnished with a product side, closed PTFE film that will curve also with a slow press increase which will destroy the conductor circuit. The response pressure is only slightly above the values of the alarm SVT02.
Model
| SVT 05 | STRIKO VerfahrensTechnik – Leakage Sensor ۰۵ |
Service description
Conventional alarms provide signal only when if the bursting disc has fully triggered. Based on its design with pre-slotted film, they are also suited for low pressures, however only for a relatively quick pressure increase. A slow pressure increase, e.g. through leaks due to pitting corrosion or hairline cracks of the upstream bursting disc, can be balanced through the slotted film of the standard alarm SVT 02 , and does not trigger any signal.
Especially under environmental protection view points, the early detection of leaking bursting discs or the triggering of safety valves is important and possible with SVT 05.
The delivery occurs entirely ready-to-install with seals and connecting cables. Of course it is fit for use for DIN, ANSI and JIS flanges – and can be configured with other seals depending on the use scenario.
Advantages in the application
- Quick recognition of malfunctions, also for leaking bursting discs (e.g. through pitting corrosion or hairline cracks) or safety valves
- Highest corrosion resistance through PTFE film closed on the product side
- Ready-to-install delivery
- All materials used are asbestos-free
- Suitable for all metal and graphite bursting discs, also for third party products
- Continous temperature range: -30 °C to +220 °C (directly on leakage sensor)
- Can be delivered ex works
Specifications
| Temperature range | -۳۰ ℃ to +220 ℃ |
| max amperage | ۵۰ mA |
| max resistance before bursting | ۲۰ Ω |
| Conductor path material | Silver |
| Membrane | PEEK |
| Sealing film | PTFE |
| Seals | Klingersil C 4400 |
| Power supply cable | Teflon coated, 2 m long other sealing materials can be delivered upon request. |
Minimum burst pressure (bar u) of the upstream bursting disc
| Nominal width mm | ۲۵ | ۴۰ | ۵۰ | ۸۰ | ۱۰۰ | ۱۵۰ | ۲۰۰ | ۲۵۰ | ۳۰۰ |
| Thickness mm | ۵ | ۵ | ۵ | ۵ | ۵ | ۵ | ۵ | ۵ | ۵ |
| Pressure bar (u) tolerance | ۰,۸ | ۰,۵ | ۰,۳ | ۰,۲ | ۰,۱۵ | ۰,۱۵ | ۰,۱۵ | ۰,۱۵ | ۰,۱۵ |
Upon request, other nominal widths can be delivered
Note about ATEX
All burst indicators / leakage sensors from STRIKO according to the type of protection are rated “i” intrinsic safety – “simple electrical equipment” when connected to an intrinsically safe circuit. The requirements on “simple electrical equipment” are covered in section 5.7 of the standards EN 60079-11:2012 or IEC 60079-11 Ed. 6:2011-06 “Explosive atmospheres – Part 11: Equipment protection by intrinsic safety ‘i’”.
Simple electrical equipment, designed in accordance with the requirements of section 5.7 of the standards EN 60079-11:2012 or IEC 60079-11:2011 and section 16.4 of the standards EN 60079-14: 2014 or IEC 60079-14 Ed. 5: 2013-11 “Explosive atmospheres – Part 14: Electrical installations design, selection and erection” do not require certification; see section 4.4.2 of EN 60079-14: 2014 or IEC 60079-14 Ed. 5: 2013-11.
Such parts are also not governed by directive 94/9/EC since they do not feature any potential source of ignition. The designation of simple equipment can be made by any person/institution, including the manufacturer or installer, and made by freely selectable designation marking or coding preferred for the installation/plant.