- Alarm signal on low level
- Positive active detection
- Compact unit
- Switch status: direct reading
- Construction: PPH or PVDF
| Float, stem, bracket, head: | PPH or PVDF |
| Maximum temperature: | PPH: 105°C; PVDF: 140°C |
| Level switch BSM 501 (ordered separately) | |
| Rated voltage: | 4V to 250V AC; 4V to 30V DC |
| Rated current: | 1mA to 3A (AC or DC) |
| Switching principle: | Change over magnetic actuated micro switch |
| Connector: | Plug acc. DIN 43650, with PG 13.5 |
| Cable: | Max cross-section 1.5mm2 |
| Ambient temperature: | -20 to +90 °C |
| Housing: | Translucent polycarbonate, IP65 |
| CE marks: | In accordance with low Voltage Guidelines 2006/95/EEC and EMV Guidelines 89/336/EEC |
A float (1) at the bottom of a stem (2) moves a magnet (3) inside the head housing (4). The fluid maintains the equipment (float, stem and magnet) in highest position (normal status). When the fluid level is going down, the equipment comes in lowest position -down to block on bearing (5).
On this position, the level switch BSM (6) changes from normal status to alarm status. To test the complete system, it is sufficient to push down the float to the lowest position or, to lift up the equipment. The pointer indicates the status and the alarm signal should be sent to the control panel. For a safe operating condition it would be better to test regularly the complete system.
Application:
• Low level detection for tanks where a lack of chemical is an unsafe condition
• Protection against overheating following evaporation or tank leaking, or defect on chemical solution refilling