Product Description
Flowserve NRS 1-51 Level Switch / High Water Level Limiter
The Flowserve GESTRA NRS 1-51 is a high-integrity level switch and high water level limiter designed for critical industrial applications. Engineered for maximum reliability, it monitors conductive liquid levels to prevent overfilling in tanks, vessels, and steam boilers. With a certified Functional Safety rating of SIL 3 according to IEC 61508, the NRS 1-51 provides a dependable solution for safety-instrumented systems. It operates on a 24 V DC supply and is designed for use with GESTRA NRG 1…-51 level probes, featuring an integrated test function and clear status indicators on the front panel for straightforward operation and maintenance.
Technical Specifications:
- Model: NRS 1-51
- Brand: Flowserve (GESTRA)
- Functional Safety: SIL 3 in accordance with IEC 61508
- Operating Voltage: 24 V DC (+/- 20%)
- Power Consumption: 7 VA
- Conductivity Limit: ≥ 10 µS/cm
- Outputs: 2x relay contacts (250V, 2.0A), 1x external alarm (24 VDC, 100 mA)
- Protection Class: IP 40 (housing), IP 20 (terminals)
- Maximum Ambient Temperature: 55°C (131°F)
- Compatible Probes: GESTRA NRG 1…-51 series
Flowserve NRS 1-51 Level Switch / High Water Level Limiter
Buy the Flowserve GESTRA NRS 1-51, a SIL 3 certified high water level limiter and level switch for industrial safety systems. Operates at 24 V DC for reliable liquid level monitoring.
