Amplifier Built-in Leak Sensor

Amplifier Built-in Leak Sensor
EX-F70
SERIES
Amplifier Built-in
Leak Sensor
High-speed Detection
Even a Little Liquid
Machine Directive &
EMC Directive
EX-F72
A mounting bracket made of PVC (polyvinyl chloride) is now
available. This type of mounting bracket can be utilized without
problems within environments that would corrode normal metal
brackets.
PVC Mounting Bracket Now Available
Reliable Detection
The unique effect of capillarity enables reliable detection of small leaks
and viscous liquids.
Safe Design
● If the sensor is not mounted correctly, if the cable is cut or
disconnected, or if the sensor is not operating correctly, the output
is the same as when the beam is not received (LEAK).
● Design deals with human errors such as, forgetting to mount, etc.
Sensor head
Capillarity effect
Liquid
Easy Operation Check
Leakage pan
Compact, Space-saving
This slim (10mm) side-mounting sensor is especially good for use in
confined spaces.
This sensor is equipped with a NORMAL indicator (green) which
lights up when mounting correctly, and a FAULT indicator (red) which
lights up when sensing the leaked liquid or when mounted incorrectly
(forgetting to mount exclusive mounting bracket). So, the operation
can be checked easily.
No Need for Sensitivity Adjustment
No need for sensitivity adjustment with adjuster, so initial mounting is easy.
10mm
approx.
SUS mounting bracket type EX-F71 PVC mounting bracket type EX-F72
Easy Installation & Reset
● Facilitates easy installation: the SUS mounting bracket can be
installed using only a single screw and the PVC mounting bracket
can be installed using only two screws or an adhesive.
● No component replacement required for resetting after leak detection.
● The simple shape makes it easy to wipe off the leaked liquid.
New Type of Detection Method
● When a leak occurs, the beam form the beam-emitting part scatters through the leaked liquid and is not transmitted to the beam-receiving part.
Beam-emitting part
Beam-receiving part
Sensing
surface
Leaked
liquid
Leakage pan
592
Beam-emitting part
Beam-receiving part
When leakage occurs
The beam from the beamemitting part scatters
through the leaked liquid
and is not transmitted to
the beam-receiving part.
Sensing
surface
Leakage pan
When there is no leakage
The beam from the beamemitting part reflects off of
the surface of the sensor
and is transmitted to the
beam-receiving part.
EX-F70
PRECAUTIONS FOR PROPER USE
SPECIFICATIONS
• Never use this product as a sensing device for personnel
protection.
• In case of using sensing devices for personnel protection,
use products which meet standards, such as OSHA, ANSI
or IEC etc., for personnel applicable in each region or
country.
SUS mounting bracket type PVC mounting bracket type
Item
Type NPN output PNP output NPN output PNP output
Model No. EX-F71 EX-F71-PN EX-F72 EX-F72-PN
!
Water, FluorinertTM (Note 1, 2)
Sensing object
12 to 24V DC10% Ripple P-P 10% or less
Supply voltage
Current consumption 10mA or less 15mA or less 10mA or less 15mA or less
<NPN output type>
<PNP output type>
NPN open-collector transistor
• Maximum sink current: 50mA
• Applied voltage: 30V DC or less
(between output and 0V)
• Residual voltage:
1.0V or less (at 50mA sink current)
0.4V or less (at 16mA sink current)
Output
PNP open-collector transistor
• Maximum source current: 50mA
• Applied voltage: 30V DC or less
(between output andV)
• Residual voltage:
1.0V or less (at 50mA source current)
0.4V or less (at 16mA source current)
In normal state: ON
Output operation When leak detected, or the sensor is mounted improperly: OFF
Incorporated
Short-circuit protection
50ms or less
Response time
Red LED (Lights up when liquid is detected or the sensor is mounted improperly)
FAULT indicator
NORMAL indicator Green LED (Lights up when the sensor is mounted properly)
Protection
IP67 (IEC)
10 to 60C (No dew condensation or icing allowed)
Ambient temperature Storage: 20 to 70C (Note 3)
Ambient illuminance Incandescent light: 1,000?x at the light-receiving face
Emitting element
Infrared LED (non-modulated)
Material
Enclosure: Polypropylene
Cable
0.1mm2 3-core PVC cabtyre cable, 2m long
Cable extension
Extension up to total 50m is possible with 0.3mm2, or more, cable.
25g approx.
Weight
SUS mounting bracket (Note 4): PVC mounting bracket (Note 4): 1 No. each
Accessories
for two-point-fixing and adhesive-fixing
1 No.
Notes: 1) Highly viscous liquid may not be detected stably.
2) FluorinertTM is the world wide trademark of 3M.
3) Liquid being detected should also be kept within the rated ambient temperature range.
4) The mounting bracket for EX-F71 is not interchangeable with that of
EX-F72 due to the different sensitivity settings of each sensor.
5m cable length type
5m cable length models are available (Standard: 2m).
Model No.: EX-F71-C5 (SUS mounting bracket type, NPN output), EX-F71-PN-C5 (SUS mounting bracket type, PNP output)
EX-F72-C5 (PVC mounting bracket type, NPN output), EX-F72-PN-C5 (PVC mounting bracket type, PNP output)
Sensor circuit
• Be sure to use attached mounting bracket when installing the sensor to
avoid human error. Reliable detection cannot be guaranteed when this
mounting bracket is not used. As well, the mounting bracket for EX-F71 is
not interchangeable with that of EX-F72 due to the different sensitivity
settings of each sensor.
• Tightening torque of SUS mounting bracket should be 0.98Nm or less.
Tightening torque of two-point-fixing PVC mounting bracket should be
0.49Nm or less.
Others
• Avoid using the product in an explosive atmosphere because this product
does not have an explosive-proof protective construction.
• If air bubbles are trapped within the sensing portion, take care that extra time
may be required to obtain stable sensing, or stable sensing may not be
achieved. Before use, thoroughly check the conditions under which the
sensor is used.
• For proper treatment after a liquid leak, ensure that all liquid is completely
wiped off from both the sensor’s sensing surface and from attached
mounting bracket. A soft cloth must be used to ensure that scratches or
other damage do not occur.
If the sensing surface or attached mounting bracket is scratched, or if any
traces of liquid remain, then normal functionality will be impaired.
• Do not use during the initial transient time (30 sec. approx.) after the power
supply is switched on.
• Since the sensor is non-modulated type, take sufficient care against
extraneous light. Make sure that extraneous light is not directly incident on
the sensing surface.
• Avoid dust, dirt, and steam.
• Take care that the product does not come in direct contact with oil, grease
or organic solvents, such as, thinner, etc.
• If these sensors are used in an environment where static electricity is
generated, then the pan used to contain liquid leaks must be made of
metal and connected to a proper electrical ground.
DIMENSIONS (Unit: mm)
I/O CIRCUIT DIAGRAMS
NPN output type
Mounting
EX-F71
EX-F72
Color code
D
(Black) Output
Load
50mA max.
(Blue) 0V
ZD
Tr
Internal circuit
Sensor
EX-F71 with SUS mounting bracket
35.9
28.5
35.9
28.5
(Brown) V
"2.5 cable
2m long
16
26.5
12 to 24V DC
10%
16
26.5
5.5
FAULT indicator (Red)
NORMAL indicator (Green)
M4 (length 10mm) stud bolt (Note)
(Straight type)
10.7
Users’ circuit
SUS mounting
bracket
13
11
M4 nut (Note)
Symbols ... D : Reverse supply polarity protection diode
ZD: Surge absorption zener diode
Tr : NPN output transistor
Note: A M4 stud bolt has been welded to this unit.
M4 nut is not supplied with the sensor.
Please order it separately.
EX-F72 with PVC mounting bracket
PNP output type
Sensor circuit
(Brown) V
34.7
Tr
ZD
50mA max.
(Black) Output
D
35.9
28.5
35.9
28.5
Color code
Load
26.5 20.7
Two-point-fixing
PVC mounting
bracket
9
12 to 24V DC
10%
13
(Blue) 0V
Users’ circuit
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tt
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t
Adhesive fixing
PVC mounting
bracket
13
11.2
0.5
Symbols ... D : Reverse supply polarity protection diode
ZD: Surge absorption zener diode
Tr : PNP output transistor
26.5
2-M4 (length 10mm) stud bolt (Note)
(Straight type)
2-M4 nuts (Note)
11.2
Internal circuit
34.7
Two-point-fixing
0.5
Adhesive fixing
Note: A M4 stud bolt has been welded to this unit.
M4 nut is not supplied with the sensor.
Please order it separately.
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593
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