A-362
Advanced Photoelectric Sensors
Operation
●
Teaching type
Perform teaching with the tip of the fiber unit in the fluid. (The
sensitivity is set to the top 10% of the received light intensity in
fluid for stronger performance with respect to fluctuations in
received light intensity due to fluid leakage, and thus teaching
without work for high viscosity fluids is effective.)
Perform teaching after the object has been removed from the
fluid, and then repeat teaching with the object in the fluid.
(Teaching with/without work is effective for fluids in which
bubbles form at high temperature.)
Note: If set to the maximum sensitivity with the object removed from the fluid,
detection of the fluid will no longer be possible.
●
Sensitivity control type
Precautions
Installation
• Use the no-bending section to secure the fiber unit. If the
fiber unit is secured without using the no-bending section,
the fluid level detection position may shift.
• Influences from the sides or bottom may interfere with
detection. In that case, remove to a distance that is not subject
to these influences, or apply a black coating to the sides and
bottom.
• If you need to use the system in a dangerous location, use only
the fiber unit in the dangerous location and place the amplifier
unit in a safe location.
●
For adjustment
About the fluid level detection position
The fluid level detection
position is located 5.2±2
mm from the tip of the
Teflon section (see the
diagram at right). The
fluid level detection
position will vary depending on the surface tension of the fluid
and the dampness of the detection position of the fiber unit.
Miscellaneous
• Operation will not be stable in the following situations.
A
Bubbles adhere to the cone of the detector head.
B
Solutes
have precipitated onto the cone of the detector head.
C
The fluid has a high viscosity.
• Some fluids such as those of a milky-white color may not
permit detection.
• Take care not to strike the tip with any object. A damaged or
deformed detector head may cause unstable operation.
Dimensions (Unit: mm)
1. Using teaching without work
2. Using teaching with/without work
Sequence
Detection state
Sensitivity adjuster
Indicator state
Adjustment procedure
1
Determine the position A at which the incident light indicator lamp
(red) illuminates as the sensitivity control is gradually increased
from the minimum setting after the object has been removed from
the fluid.
2
• If the red indicator lamp illuminates at the maximum sensitivity
setting, gradually decrease the sensitivity control from the
maximum setting with the object in the fluid, and determine the
position B at which the incident light indicator lamp (red) goes
off.
• If the red indicator lamp goes off at the maximum sensitivity
3
---
Set the sensitivity control to C midway between A and B. At this
time, verify that the stability indicator lamp (green) illuminates
both with and without fluid.
(A)
1
8
OFF
OFF
Green
Red
(B)
1
8
OFF
OFF
Green
Red
(A)
(B)
(C)
1
8
Green
Red
ON
OFF
Correct Use
Surface level detection position
5.2
±
2
mm (From a Teflon part tip)
2,000
7.2
Sensing head 6 dia. (Teflon)
Fiber connector 9dia.
(Nickel-plated brass) 8 dia. Optical fiber two, 2.2 dia. * 2
To an amplifier side
Not bend, length: 150 (350) * 1
2,000
27
42
* 1. ( ): E32-D82F2 dimensions
* 2. Freely cut because 2m part of optical fiber at amplifier side is made from a plastic fiber.
E32-D82F1
E32-D82F2
In the interest of product improvement, specifications are subject to change without notice.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No.
E41E-EN-01
