Gestra NRG16-50S

Gestra

产品编号: NRG16-50S
生产厂家: Gestra
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Datasheets for Gestra NRG16-50S

Description for Gestra NRG16-50S

Description The level electrode NRG 16-50 S is used in conjunction with level switch NRS 1-50 (de-energizing delay: 15 seconds) as water-level limiter for steam boilers and (pressurized) hot-water installations on board of seagoing vessels, mobile offshore platforms or river boats. Water level limiters switch off the heating when the water level falls below the set minimum level (low wate)Function When the water level falls below the low level, the level electrode is exposed and a low level alarm is triggered in the level switch NRS 1-50. This switchpoint “Low water level (LW)” is determined by the length of the electrode tip. After the de-energizing delay has elapsed, the two output contacts of the level switch will open the safety circuit for the heating. The equipment has a factory set default de-energizing delay of 15 seconds to compensate for the movements of the ship. The electrode operation is based on the conductive measuring principle using the electrical conductivity of the water for signalling water level. The self-monitoring function ensures that an alarm will also be triggered if the electrode insulation is contaminated or has developed a leak or if there is a malfunction in the electrical connection. The level electrode is installed inside steam boilers, vessels or inlet lines of hot-water systems. The protection tube provided on site ensures the correct functioning. If the level electrode is installed in an isolatable level pot outside the boiler, make sure that the connecting lines are rinsed regularly. In addition, the logic unit SRL 6-50 is required to monitor the purging times and the purging sequence. If the connecting lines for steam ≥40 mm and water ≥100 mm, the installation is considered to be internal. In this case the rinsing processes do not have to be monitored.  

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