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Important notes
Usage for the intended purpose
The level electrode NRG 211-1 is designed for measuring the water level in condensate lines.
In conjunction with level switch NRS 2-4 the electrode can be used as max. limit switch with high
level alarm.
Function
The level electrode together with the electronic module NRV 2-30 works according to the capacitance
measurement principle, translating the level changes into level-dependent current signals.
The electrode is self-monitoring, i. e. a fault in the insulating seal will cause a malfunction alarm.
In addition, a defined switching signal is given when the fluid reaches 395 °C because for physical
reasons the level cannot be determined exactly in this temperature range.
The level electrode works with the level switch NRS 2-4 to detect the max. limit and raise a high level
alarm. This equipment combination can be used as part of a controlled draining system in power
plants.
The electrode with welding standpipe is installed in vertical pipes.
Safety note
Danger
When loosening the electrode steam or hot water might escape!
This presents the risk of severe scalding all over the body!
It is therefore essential not to dismantle the electrode unless the boiler pressure is veri-
fied to be 0 bar.
The electrode becomes hot during operation.
Risk of severe burns to hands and arms.
Before carrying out installation and maintenance work make sure that the equipment is
cold.
Attention
The name plate specifies the technical features of the equipment. Do not commission or
operate any item of equipment that does not bear its specific name plate.
The equipment must only be installed, wired and commissioned by qualified and competent staff.
Retrofitting and maintenance work must only be performed by qualified staff who - through adequate
training - have achieved a recognised level of competence.
