Description: NRG16-50S ( Gestra
)
Gestra NRG16-50S
Product Name: Gestra NRG16-50S
Product Brand: Gestra
Product Code: NRG16-50S
Product Artikel: 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.
