Gestra NRG16-38S

Description
The level electrode NRG 16-38S, NRG 16-39S is used in
conjunction with level switch NRS 1-50 for water level limiting and level monitoring in steam boilers and (pressurised)
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 water). Function
The level electrode NRG 16-38S is an equipment combination
consisting of
1 level electrode NRG 16-11 (water level limiter) and
1 level transmitter NRGT 26-1S (continuous level monitoring).
The level electrode NRG 16-39S is an equipment combination
consisting of
2 level electrodes NRG 16-11 (water level limiter) and
1 level transmitter NRGT 26-1S (continuous level monitoring).
Water level limiter NRG 16-11 / NRS 1-50
The water level limiter is an equipment combination consisting
of one or two level electrode(s) NRG 16-11 and one level
switch NRS 1-50.
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 NRS 1-50 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 operation of the level electrode NRG 16-11 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 or (pressurized) hot-water systems. The protective tube mounted on
site ensures correct functioning.
Continuous level monitoring NRGT 26-1S
The level transmitter NRGT 26-1S is a compact-type system
consisting of a capacitance level electrode with integrated
level transmitter. The equipment works according to the
capacitance measurement principle and provides a level
proportional measuring current of 4-20 mA. The level transmitter continuously monitors the liquid level in steam boilers
or hot-water installations.