Low-Level Limiter and High-Level Alarm

Data sheets

Installation Instructions

Approvals 

Specifications

Boiler safety has a new benchmark.
The level limiters have been granted TÜV and EU type approvals according to EN 12952/EN 12953. These Directives state, among other things, the requirements made on limiting systems and equipment for steam boiler plants and (pressurized) hot water installations. The low-level limiter and high-level alarm system is certified acc. to IEC 61508 for the Safety Integrity Level 3 (SIL 3).

The safety parameters were checked and certified by TÜV Süd – proof of the system’s long-term durability without hazardous failures. The new limiter system NRS 1-50 / NRG 1x-50 is an advancement of the successful series NRG 1x-11 / NRS 1-7, which it will replace by the end of 2010. The new low-level limiter enables the interconnection of two low-level electrodes with one low-level limiter switch, thus fulfilling the requirement for two independently working low-level limiters. 
Special features: