Product Description
Gestra NRS 1-7B
The Gestra NRS 1-7B is a high-integrity level switch designed for conductive liquids, primarily used in steam boiler plants and other industrial applications. It functions as a water level limiter for both high (HIGH) and low (LOW) water levels, as well as a water level controller for pump ON/OFF control. The NRS 1-7B is built for safety-critical systems, offering reliable performance and diagnostics. Its robust design ensures dependable operation in demanding environments, making it an essential component for boiler safety and automation. This switch is type-approved according to EN 12952/12953 and holds a Safety Integrity Level (SIL) 3 rating, confirming its suitability for high-demand safety applications.
Technical Specifications:
- Supply Voltage: 230 V AC, 50/60 Hz (other voltages available)
- Power Consumption: Approx. 3 VA
- Output Contacts: Two voltage-free change-over contacts for level alarm and control
- Sensitivity (Conductivity): Switchable between 0.5 µS/cm and 10 µS/cm
- Permissible Ambient Temperature: -20 °C to +60 °C
- Protection Class: IP65
- Safety Approval: SIL 3 according to IEC 61508
Gestra NRS 1-7B
Buy the Gestra NRS 1-7B, a reliable and SIL 3 certified level switch for conductive liquids. Ideal for steam boiler water level limiting and pump control applications.
