Autonics BL Series User manual

A-140
BL Series
Features
Liquid Level Sensor for Mounting Pipe (Through-Beam)
● Detects liquid in a transparent/semitransparent pipe
diameter Ø6 to 13mm, thickness 1mm
● Compact size: W23×H14×L13mm
● Selectable Light ON/Dark ON operation mode
by operation mode switching button
● Easy to check operation status by operation mode indicator
[green LED (Light ON: on, Dark ON: o󰀨)],
operation indicator [red LED]
● Built-in reverse polarity protection circuit and
output short overcurrent protection circuit
● IP64 of protection structure (IEC standards)
Model
Model Pipe diameter Sensing type Power supply Control output
BL13-TDT Ø6 to 13mm Through-beam 12-24VDC ±10% NPN open collector output
BL13-TDT-P PNP open collector output
Specifications
Model
NPN open collector
output BL13-TDT
PNP open collector
output BL13-TDT-P
Sensing type Through-beam
Applicable pipe ●Using binding band: Ø6 to 13mm ●Using protection bracket: Ø12.7mm (1/2 inch)
transparent pipes in 1mm thicknes s (FEP (uoroplastic) or with equivalent transparency)
Standard sensing target Liquid in a pipe※1
Response time Max. 2ms
Power supply 12-24VDC ±10% (ripple P-P: max. 10%)
Current consumption Max. 30mA
Light source Infrared LED (950nm)
Operation mode Light ON/Dark ON operation mode switch button
Control output NPN or PNP open collector output
●Load voltage: max. 30VDC ●Load current: max. 100mA ●Residual voltage: max. 1VDC
Protection circuit Reverse polarity protection circuit, output short overcurrent protection circuit
Indicator Operation indicator: red LED, operation mode indicator: green LED
Insulation resistance Over 20MΩ (at 500VDC megger)
Noise immunity ±240V the square wave noise (pulse width: 1㎲) by the noise simulator
Dielectric strength 1,000VAC 50/60Hz for 1 minute (between all terminals and case)
Vibration 1.5mm amplitude or 300m/s2 at frequency of 10 to 55Hz in each of X, Y, Z direction for 2 hours
Shock 500m/s² (approx. 50G) in each X, Y, Z direction for 3 times
Envi-
ron-ment
Ambient illumination Sunlight/incandescent lamp: max. 3,000lx for each (receiver illumination)
Ambient temperature 10 to 55℃, storage: -25 to 65℃
Ambient humidity 35 to 85%RH, storage: 35 to 85%RH
Protection structure IP64 (IEC standard)
Material Case: polycarbonate
Cable Ø2.5, 3-wire, 1m (AWG28, core diameter: 0.08mm, number of cores: 19, insulator diameter: Ø0.9)
Accessory Binding band: 2, anti-slip tube: 2
Approval
Weight※2 Approx. 50g (approx. 13g)
※1: This may not detect the liquid with low transparent, with high viscosity, or with floating matters.
※2: The weight includes packaging. The weight in parenthesis is for unit only.
※The temperature or humidity mentioned in Environment indicates a non freezing or condensation environment.
Please read “Safety Considerations”
in the instruction manual before using.

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.
※Ifshort-circuitthecontroloutputterminalorsupplycurrentovertheratedspecification,
normalcontrolsignalisnotoutputduetotheoutputshortovercurrentprotectioncircuit.
(brown)
+V
(black)
Output
(blue)
0V
①Load connection for PNP output
②Load 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 circuitMain circuit
(brown)+V
(brown)+V
(black)Output
(black)Output
( b l u e ) 0 V
( b l u e ) 0 V Load
Output short
overcurrent
protection circuit
+
-

A-142
BL Series
Dimensions
Installation
(unit: mm)
● If installing this unit at an opaque pipe, it is impossible to
detect accurately. Install this unit at the rated pipe.
● Fix a pipe and this sensor tightly with binding bands and
anti-slip tubes as the below figure and cut the spare part
of binding bands with scissors or a knife.
● When connecting binding bands, be careful not to
transform a pipe.
Pipe
※Principle of operation
It detects whether there is liquid or not in a pipe by
refractive index of light.
Liquid
Emitter Receiver Emitter Receiver
Anti-slip
tube
Binding band
(max. 2.5mm width)
Liquid
If installing this unit at opaque pipes, it is impossible to detect accurately. Install this unit at the rated pipes.
Using binding band: Ø6 to 13mm, Using protection bracket: Ø12.7mm (1/2 inch)
◎ Protection bracket (BK-BL13-P(sold separately))
◎ Protection bracket (sold separately)
Choose a location on the pipe and attach the sensor and
the protection bracket.
Sensor
Pipe: Ø12.7mm (1/2 inch)
Protection
bracekt
※
For using the protection bracket, only Ø12.7mm (1/2 inch) pipes are available.
Ø13
Operation mode
switching button
Operation mode indicator(green)
Operation indicator
(red)
14
Ø2.5, 1m
13
Opticlal
axis
23
6
Ø34
27.4
8.5
2.4
2
10.8
2.5 17
Ø15.7
Ø12.7
26.4
28.4
Ø15
Ø16.7

A-143
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
Functions
● Operation mode switching
● Operation mode lock setting
Light ON
Operation mode
indicator
(green LED) ON
Press operation mode
switching button once Dark ON
3 sec
Operation mode
indicator
(green LED) OFF
Lock
operation
mode
Unlock
operation
mode
Press operation mode switching
button for over 3 sec
(until operation mode indicator
flashes)
※If you press the operation mode switching button (less than 3 sec) in lock operation
status and the operation mode indicator (green LED) flashes 3 times.