Flowserve NRGS 16-1 - Manual (Page 8)

8
Explanatory Notes
Scope of Supply
Function
Designs
NRGS 16 -1
1 Compact system type NRGS 16 -1
1 Joint ring (of stainless steel 1.4301) D 33 x 39 to DIN 7603
1 Installation Instruction
NRGS 16 -1 S
1 Compact system type NRGS 16 -1 S (for marine application)
1 Flange DN 50 (2"), PN 40 to DIN 2635
1 Installation Instruction
System Description
The compact system NRGS 16 -1 / NRGS 16 -1 S works according to the conductivity
measurement principle.
With the NRGS 16 -1 / NRGS 16 -1 S a maximum of 4 levels can be signalled in
conductive liquids:
■ 4 Levels with one switchpoint each
■ MAX alarm, MIN alarm, pump ON, pump OFF with one switchpoint each.
The NRGS 16 -1 / NRGS 16 -1 S has a level switch integrated in the electrode case
for the controlling of all functions. An external switching device is not required.
The conductivity of the liquid is used to signal the liquid level. Some liquids are
conductive, which means that they allow an electric current to flow through them.
For the safe functioning of this device a minimum conductivity of the liquid to be
measured is required.
The conductivity measurement method can detect two conditions: electrode rod
submerged / exposed or switchpoint reached / not reached. Before installation, the
length of the electrode rod must be adapted to the switching levels, e. g. for
max./ min. alarm, controlling of a valve or pump.
NRGS 16 -1:
Screwed design 1" BSP, DIN ISO 228. Fig. 1
NRGS 16 -1 S:
Flanged design for marine application DN 50, PN 40, DIN 2635. Fig. 2