Flowserve NRGS 16-4 - Manual (Page 5)

5
Explanatory Notes
Scope of supply
■ 1 Level electrode type NRG 16-4
■ 1 Joint ring 17x 21 form D to DIN 7603, made from 1.4301, bright annealed
■ 1 Installation manual
Descrip tion
The level electrode NRG 16-4 is designed for detecting and signalling levels in liquids with a minimum
electrical conductivity.
Depending on the type of level switch used the electrode can detect the highest or lowest (max./min.) liquid
level.
The level electrode NRG 16-4 can be used in conjunction with level switches NRS 1-1, 1-2, 1-3 and 1-5
as part of a water level control, high level alarm or water level limiting system (without SMART function) in
steam boilers and pressurised hot water plants.
Function
For the correct functioning of the level electrode NRG 16-4 together with level switch NRS 1-... a minimum
electrical conductivity of 0.5 µS/cm at 25°C of the water is required.
The switching signal is triggered off as soon as the electrode tip submerges or is exposed.
The electrode tip is simply cut to length to give the required switching level.
System components
Level switch NRS 1-1,
Level switch NRS 1-2,
Level switch NRS 1-3,
Level switch NRS 1-5,
Design
NRG 16-4:
Electrode with screwed connection 3/ 8" BSP, ISO 228-1.