Omron E8EB User manual

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General-Purpose Pressure Sensor E8EB
Ideal for Workpiece Presence
Detection
Models with a pressure sensing range
of 0 to 14.21 psi are ideal for workpiece
position checking
Models with a pressure sensing range
of 0 to 142 psi are ideal for original
pressure checking
Conforms to IEC IP54
Ordering Information
SENSOR
Pressure range ON/OFF output Linear output Part number
Positive pressure 0 to 142.1 psi NPN open collector 1 to 5 V E8EB-10C
0
to
142.1
si
(0 to 980 kPa) PNP open collector E8EB-10B
0 to 14.2 psi NPN open collector E8EB-01C
0
to
14.2
si
(0 to 98 kPa) PNP open collector E8EB-01B
Negative pressure 0 to –14.2 psi NPN open collector E8EB-N0C2B
g
0
to
14.2
si
(0 to –98 kPa) PNP open collector E8EB-N0B2B

E8EB
E8EB
2
Specifications
RATINGS
Item/Model E8EB-10C E8EB-10B E8EB-01C E8EB-01B E8EB-N0C2B E8EB-N0B2B
Supply voltage 24 VDC ±10% with a ripple (p-p) of 5% max.
Current consumption 20 mA max.
Pressure type Positive Negative
Permissible pressure range 0 to 142 psi (0 to 980 kPa) 0 to 14.2 psi (0 to 98 kPa) 0 to –14.2 psi (0 to –98 kPa)
Pressure setting range 0 to 142 psi (0 to 980 kPa) 0 to 14.2 psi (0 to 98 kPa) 0 to –14.2 psi (0 to –98 kPa)
Withstand pressure 290 psi (2.0 MPa) 42 psi (290 kPa) 42 psi (290 kPa)
Applicable fluid Noncorrosive and nonflammable gases
Repeat accuracy (ON/OFF output) ±1% FS max.
Accuracy (linear output) ±3% FS max.
Hysteresis (linear output) ±1% FS max.
Differential travel (ON/OFF output) 0.4 to 1.6% FS max.
Linearity (linear output) ±1% FS max.
Response time 5 ms max.
Linear output 1 to 5 V with an output impedance of 20 Ωand a permissible resistive load of 10 kΩmin.
ON/OFF output NPN open
collector PNP open collector PNP open collector PNP open collector NPN open collector PNP open collector
Load current 80 mA max.
Output applied
voltage 30 VDC max.
Residual voltage NPN: 1 V max. (at the load current of 80 mA) and 0.4 V max. (at the load current of 20 mA)
PNP: 2 V max. (at the load current of 80 mA) and 1.5 V max. (at the load current of 20 mA)
Indicator Operating indicator (red)
Ambient
tt
Operating –10°C to 55°C (14°F to 131°F) with no icing
temperature Storage –25°C to 70°C (–13°F to 158°F) with no icing
Ambient humidity Operating 35% to 85% (with no icing)
Degree of protection IEC60529 IP54
Pressure port RC(PT) 1/8
CHARACTERISTICS
Item/Model E8EB-10C, E8EB-10B E8EB-01C, E8EB-01B, E8EB-N0C2B,
E8EB-N0B2B
Temperature influence ±0.12% FS/°C between 0°C and 50°C
(32°F and 122°F) ±0.2% FS/°C between 0°C and 50°C (32°F and 122°F)
±0.2% FS/°C max. between –10°C and 0°C
(14°F and 32°F) or 50°C and 55°C
(122°F and 131°F)
±0.3% FS/°C max. between –10°C and 0°C
(14°F and 32°F) or 50°C and 55°C
(122°F and 131°F)
Voltage influence ±1% FS max.
Insulation resistance 100 MΩmin. (at 500 VDC) between current carry parts and case
Dielectric strength 500 VAC for 1 min between current carry parts and case
Vibration resistance 10 to 500 Hz, 1.5-mm double amplitude or 100 m/s2(328 ft/s2) approx. 10G whichever is
smaller, for 2 hours each in X, Y, and Z directions
Shock resistance 1,000 m/s2(3280 ft/s2) approx. 3 times each in X, Y, and Z directions
Enclosure rating IEC60529 IP54
Pressure port material Zinc die-cast
Cable Vinyl-insulated round cable with four conductors, 3.8 dia.; standard length: 2 m (78.74 in)
Weight Approx. 120 g (4.23 oz)

E8EB E8EB
3
En
g
ineerin
g
Data
TEMPERATURE VS OPERATING
PRESSURE (TYPICAL) PRESSURE VS. DIFFERENTIAL TRAVEL (TYPICAL)
E8EB-01C
Operating pressure fluctuation (% FS)
Temperature (°C) Pressure (psi)
Differential travel (%FS)
E8EB-01C
VOLTAGE VS. OPERATING
PRESSURE (TYPICAL)
E8EB-01C
Voltage (V)
Operating pressure fluctuation (% FS)
PRESSURE VS. LINEAR OUTPUT
VOLTAGE (TYPICAL)
Pressure (psi)
Linear output voltage (V)
60 14.2
14.2
–14.2
142.1

E8EB
E8EB
4
LINEAR OUTPUT FLUCTUATION VS.
TEMPERATURE CHARACTERISTICS
(TYPICAL)
LINEARITY (TYPICAL)
E8EB-01C
Linearity deviation (%FS)
Pressure (psi)
E8EB-01C
Linear output fluctuation (% FS)
Temperature (°C) 14.2
VOLTAGE VS. LINEAR OUTPUT
FLUCTUATION (TYPICAL)
E8EB-01C
Linear output fluctuation (% FS)
Voltage (V)

E8EB E8EB
5
O
peration
OUTPUT CIRCUITS
E8EB-10C, E8EB-01C, E8EB-N0C2B E8EB-10B, E8EB-01B, E8EB-N0B2B
Operation
indicator
(red)
Pressure
Sensor
main
circuit Linear output
Brown
Load
Load
Blue
Black
White (ON/OFF)
Operation
indicator
(red)
Pressure
Sensor
main
circuit Linear output
Brown
LoadLoad
Blue
Black
White (ON/OFF)
+24 V
0 V
+24 V
0 V
TIMING CHARTS
E8EB-10C, E8EB-10B, E8EB-01C, E8EB-01B E8EB-N0C2B, E8EB-N0B2B
Pressure
(kgf/cm2)Setting
ON
OFF
Lit
Not lit
Output
Indicator
Pressure
(kgf/cm2)Setting
ON
OFF
Lit
Not lit
Output
Indicator
GAP MEASUREMENT
When checking the gap between the workpiece and the nozzle, as shown in the illustration, the output of the E8EB varies with the surface
roughness of the workpiece or the dimensions of the nozzle.
Nozzle length
Workpiece
Gap
Nozzle diameter
Air supply
E8EB

E8EB
E8EB
6
Examples with E8EB-01C (Typical)
Influence of Surface Roughness of Workpieces Influence of Nozzle Diameter
Linear output voltage (V)
Gap (µm)
Linear output voltage (V)
Gap (µm)
•The output varies with the surface
roughness of the workpiece even though
the gap is constant.
•The rougher the surface of the work-
piece is, the more noticeable the varia-
tion of output is with a small gap. The
variation rate versus gap change is not
large in cases like these.
•The larger the nozzle diameter is, the
larger the variation rate of output versus
gap change is.
1 dia.
2 dia.
3 dia.
Conditions
Nozzle dia.: 2 mm
Nozzle length: 10 mm
Air pressure: 98 kPa (1 kgf/cm2)
Conditions
Nozzle length: 10 mm
Surface roughness of work-
piece: 1.6-S
Air pressure: 98 kPa (1 kgf/cm2)
Influence of Nozzle Length
Linear output voltage (V)
Gap (µm)
•The smaller the nozzle length is, the
larger the variation rate of output versus
gap change is.
Conditions
Nozzle length: 1 mm
Surface roughness of work-
piece: 1.6-S
Air pressure: 98 kPa (1 kgf/cm2)

E8EB E8EB
Dimensions
Unit: mm (inch)
E8EB
Operation indicator
Vinyl-insulated round cable with four conductors, 3.8 dia. (standard length: 2 m)
Pressure
setting
Two,
4.4-dia.
holes
(0.17)
12.8 dia.
(0.50)
7 dia.
(0.28) 5.2 x 5.2
(0.20) X (0.20)
44
(1.73)
33.2
(1.31)
17
(0.67)
30
(1.18)
3.5
(0.14)
21
(0.83)
10.9
(0.43)
8.5
(0.33)
3.7
(0.15)
1.5
(0.06)
17.5
(0.69) 16.4
(0.65)
(19±0.1)
(75±.004)
Precautions
MOUNTING
The pressure port has an Rc (PT) 1/8 taper screw. Apply sealing
tape around the female taper screw so that no pressure leakage
will occur.
The most-suitable wrench is 17 mm in size.
Make sure that the tightening torque of the M5 female screw is
9.8 N m or 100 kgf cm (7.22 ft lbf)
Diaphragm
If the diaphragm is damaged, the Pressure Sensor will not
operate properly. Do not insert a screwdriver or steel wire into the
interior of the pressure-sensitive parts through the pressure port.
CORRECT USE
Available Gases
No corrosive or flammable gas can be used.
Filter the gas with an appropriate air filter so that the applied gas
will be free of moisture or oil.
Pressure Setting
A rubber bushing is provided with the E8EB. After the pressure is
set with the pressure adjuster, cover the adjuster with the rubber
bushing so that no dust or any other foreign material will
penetrate into the interior of the E8EB.
Cat. No. CEDSAX3 10/99 Specifications subject to change without notice. Printed in U.S.A.
OMRON ELECTRONICS, INC.
One East Commerce Drive
Schaumburg, IL 60173
NOTE: DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters to inches divide by 25.4.
1-800-55-OMRON
OMRON CANADA, INC.
885 Milner Avenue
Scarborough, Ontario M1B 5V8
416-286-6465
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