A-141
Liquid Level Sensor
SENSORS
CONTROLLERS
MOTION DEVICES
SOFTWARE
(A)
Photoelectric
Sensors
(B)
Fiber Optic
Sensors
(C)
LiDAR
(D)
Door/Area
Sensors
(E)
Vision
Sensors
(F)
Proximity
Sensors
(G)
Pressure
Sensors
(H)
Rotary
Encoders
(I)
Connectors/
Connector Cables/
Sensor Distribution
Boxes/ Sockets
Operation Mode
Operating Timing Diagram
Control Output Circuit Diagram
Connection
Load
Load
12-24VDC
- +
Operation mode
Light ON
Receiver operation
Operation indicator
(red LED)
Transistor output
Operation mode
Dark ON
Receiver operation
Operation indicator
(red LED)
Transistor output
ON
ON
OFF
OFF
ON
ON
OFF
OFF
Absent liquid (light on)
Operation
level
ON
OFF
ON
OFF
Light ON
Present liquid (dark on)
Received light
Received light
Interrupted light
Interrupted light
Stable light ON area
Unstable operation level
Stable light OFF area
Incident
light
level
High
Low
Operation
indicator
(red LED)
Transistor
output
※
The waveforms of 'Operation indicator' and 'Transistor output' are for Light ON, it is operated as reverse in Dark ON.
※Ifshort-circuitthecontroloutputterminalorsupplycurrentovertheratedspecification,
normalcontrolsignalisnotoutputduetotheoutputshortovercurrentprotectioncircuit.
(brown)
+V
(black)
Output
(blue)
0V
①
Load connection for PNP output
②
Load connection for NPN output
NPN
open
collector
output
Sensor circuit
Connection
PNP
open
collector
output
Output short
overcurrent
protection circuit
Max. 100mA
12-24VDC
+
-
Load
12-24VDC
Main circuit
Main circuit
(brown)+V
(brown)+V
(black)Output
(black)Output
(blue)0V
(blue)0V Load
Output short
overcurrent
protection circuit
+
-
