Omron E32-D82F User manual

E32-D82F
A-361E32-D82F
Fluid level sensor (contact type)
E32-D82F
High-accuracy detection of
fluid level in washing tank.
●Uses Teflon (PFA) with excellent chemical and oil
resistance.
●Capable of detecting high-temperature fluids
such as sulfuric acid in a wafer washing tank.
(-40 to +200°C)
●Achieves a high repetition precision of 0.5 mm
(in pure water).
●Employs a dripping prevention mechanism.
Ordering Information
Rating/performance
Sensor type Diffuse-reflective
Item Model E32-D82F1 E32-D82F2
Standard sensing object Pure water at 25°C
Differential distance 3 mm max.
Repetition precision 0.5 mm or less
Permissible angle of detection
object inclination ±10° or less
Perim-
eter
Tem-
pera-
ture
Teflon section within
1.5 m of fiber tip*1
*1. Teflon is a registered trademark of Dupont Company and Mitsui Dupont Chemical Company for their
fluoride resin.
Operating: -40 to +200°C, Storage: -40°C to +85°C
(with no icing or condensation)
Parts other than the
above
Operating/storage: -40 to +85°C
(no ice formation or condensation)
Ambient humidity Operating/storage: 35 to 85% RH
Peripheral pressure Operating: -50 kPa to 500 kPa
Admissible bending radius
(10% under fluid level) 40 mm or higher (25 mm for plastic fiber section)
average)
Length of no-
bending section
150 mm from tip 350 mm from tip
Material
Sensor case Teflon (PFA)
Fiber cladding Black polyethylene
Connector Brass-nickel coating
Protective structure IEC Standard IP68*2
*2. Only applies to Teflon section; the standard requires no bubbling when air at 98 kPa is injected for 30 sec-
onds at a depth of 100 mm in water.
Weight (Packed state) Approx. 75 g
Accessories Fiber cutter
Principle of operation
• In air, the difference between the index
of refraction of the Teflon section and
that of air is larger, and the light is
reflected by the detected surface and
returns to the light receiver.
• In the fluid, there is almost no difference
between the index of refraction of the
Teflon section and that of the fluid, and
the light radiates into the fluid.
Air
Liquid
Fiber Units
Sensor type Shape Model Remarks
Diffuse-reflective
E32-D82F1 Length of no-bending section:
150 mm from tip
E32-D82F2 Length of no-bending section:
350 mm from tip
Applicable amplifier unit
Model
E3X-DA-N
E3X-NA

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. BSolutes
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)
18 OFF OFF
Green Red
(B)
18
OFF OFF
Green Red
(A)
(B)
(C)
18
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