Information

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Level Relay (RNW)
29
It is an electronic control device that enables monitoring and automatically setting the level of conductive (non-explosive) liquids by
means of submerged electrodes. It has a dial that allows adjusting the electronic circuit to the liquid resistance.
g
Protection against dry run of pumps
g
Protection against tank overflow
g
Activation of solenoids, sound or light alarms
g
Process automation in general
Applications Certifications
16 18 A2
RNW EN
Max. Min. C
A1 15
RNW-EN
Wiring diagram Function diagram
Filling Function
The output relay energizes (contacts 15-18 close) when the minimum level electrode is not covered and de-energizes (contacts
15-18 open) when the liquid reaches the maximum level electrode.
A2
16 18
15
Max. Min. C
Level
Supply voltage
A1-A2
15-18
15
15 15
15
15
15
15
16
16
16
18
18
18
LED
OFF
LED
ON
LED
ON
LED
ON
LED
OFF
LED
OFF
Max.
Min.
C
t
A1
16 16
16
18 18
18
Draining Function
The output relay energizes (contacts 15-18 close) when the liquid reaches the maximum level electrode and de-energizes
(contacts 15-18 open) when the minimum level electrode is no longer covered by the liquid.
A1 15
16 18 A2
RNW ES
RNW-ES
Wiring diagram Function diagram
Max. Min.
C
16 18
15
A2A1
Level
Supply voltage
A1-A2
15-18
Max.
Min.
C
15
15
16
16
18
18
LED
OFF
LED
OFF
LED
ON
LED
ON
LED
ON
15 15
15
16 16
16
18 18
18
Max. Min. C
LEVEL
REL AY
Operating Modes