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 05 |
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 | -30 ℃ to +220 ℃ |
| max amperage | 50 mA |
| max resistance before bursting | 20 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 | 25 | 40 | 50 | 80 | 100 | 150 | 200 | 250 | 300 |
| Thickness mm | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Pressure bar (u) tolerance | 0,8 | 0,5 | 0,3 | 0,2 | 0,15 | 0,15 | 0,15 | 0,15 | 0,15 |
Upon request, other nominal widths can be delivered
Note about ATEX
According to notification 3.42-10333/98-El of the National Metrology Institute (PTB) of 07/01/1998 the alarm represents, in terms of the ignition protection type own safety “i”, a so called simple electrical operating material, and is described in detail in Section 5.4 from EN 50020. Simple electrical operating materials must not be certified, if they meet the requirements from EN 50020 and Section 6.1.3.1.3 from DIN VDE 0165/1991-02 “Establishing an electrical system in explosive areas”. All STRIKO alarms meet these requirements.