The GESTRA NRS 1-7 is a self-monitoring low-water level switch/limiter designed primarily for steam boilers and pressurized hot-water systems. It operates with compatible GESTRA NRG level electrodes to detect minimum water level and initiate a safety alarm or boiler protection action when the water level becomes too low.
Features
- Two-channel self-monitoring safety design
- Automatic periodic self-checking
- Reliable low-water alarm and limiting
- Two volt-free relay contacts
- Manual test functions for safety verification
- LED indication for power, low-water alarm and faults
- Fail-safe operation even after a first detected fault
- Compatible with several GESTRA NRG level electrodes
- DIN-rail or panel installation
- 15-second response configuration available for marine applications
Typical Applications
- Steam boiler low-water protection
- Marine boiler safety systems
- Pressurized hot-water boilers
- Industrial boiler plants
- Boiler burner protection circuits
- Minimum liquid-level monitoring
- Unattended boiler operation
- Marine auxiliary boiler systems
- Industrial steam-generation plants
