Omron E8Y User manual

"Cube" Type Differential Pressure
Sensor with LED Display Offers High
Precision Sensing
■31 (1.22) x 30 (1.18) x 30 (1.18) mm
compact-cube style saves mounting
space
■Easy-to-read red LEDs
■Digital and analog output available
■UL and CE approved
■Flow sensing type available
■PNP output types and PSI or inch/H2O
types are available on special request
Ordering Information
Differential Pressure Sensor E8Y
■SENSOR
Type Pressure range Digital output Analog output Port/Mounting Part number
— 4.5 mm dia. pipe E8Y-A2C
Rc(PT) 1/8 E8Y-A2C-R
4.5 mm dia. pipe E8Y-A5C
Rc(PT) 1/8 E8Y-A5C-R
4 to 20 mA 4.5 mm dia. pipe E8Y-A2Y
Rc(PT) 1/8 E8Y-A2Y-R
4.5 mm dia. pipe E8Y-A5Y
Rc(PT) 1/8 E8Y-A5Y-R
Flow sensor — Rc(PT) 1/8, vertical E8Y-A5C-F03V
Rc(PT) 1/8, horizontal E8Y-A5C-F03H
Rc(PT) 1/8, vertical E8Y-A5C-F20V
Rc(PT) 1/8, horizontal E8Y-A5C-F20H
■ACCESSORIES
Description Part number
Panel-mounting bracket E89-Y1
Miniature
differential
pressure
sensor
0 to 2.0 kPa
(0 to 0.29 psi)
0 to 5.0 kPa
(0 to 0.73 psi)
0 to 2.0 kPa
(0 to 0.29 psi)
0 to 5.0 kPa
(0 to 0.73 psi)
0.3 to 3.0 liter/min.
(0.07 to 0.68 gal/min.)
2.0 to 20 liter/min.
(0.45 to 4.54 gal/min.)
NPN open
collector
(2 independent
outputs)

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Item E8Y-A2C E8Y-A5C E8Y-A2Y E8Y-A5Y E8Y-A5C-F03V E8Y-A5Y-F20V
E8Y-A2C-R E8Y-A5C-R E8Y-A2Y-R E8Y-A5Y-R E8Y-A5C-F03H E8Y-A5Y-F20H
Sensor type Pressure sensor Flow sensor
Power supply voltage 12 to 24 VDC ±10%, ripple (p-p) 10% max.
Current consumption 50 mA max. 75 mA max. 50 mA max.
Pressure type Differential pressure Differential pressure sensing
Rated pressure / 0 to 2.0 kPa 0 to 5.0 kPa 0 to 2.0 kPa 0 to 5.0 kPa 0.3 to 3.0 L/min. 2.0 to 20.0 L/min.
volume range (0 to (0 to (0 to (0 to (0.068 to (0.45 to
0.29 psi) 0.73 psi) 0.29 psi) 0.73 psi) 0.68 gal/min.) 4.54 gal/min.)
Withstand pressure / 50 kPa (7.25 psi) 5 L/min (1.14 gal) 40 L/min (9.08 gal)
volume
Applicable fluid Non-corrosive gas and non-flammable gas
Accuracy ±3% FS max.
Linearity ±1% FS max.
Responce time ±0.5 sec max.
(digital output)
Linear output — 4 to 20 mA ±1%FS with a —
permissible resistive load
of 250 Ω
Digital output NPN open collector (NO/NC)
Load current: 100 mA max.
Applied voltage: 30 VDC max.
Residual voltage: 1 V max. with a load current of 100 mA or 0.4 V max. with a load current of 16 mA
Display 3 digit red LED; The orange LED indicator is lit for two independent outputs.
Display accuracy ±1% FS ±3% FS
Circuit protection Reverse polarity connection, load short-circuiting
Ambient temperature Operating: -10°C to 55°C (14°F to 131°F) with no icing
Storage: -25°C to 65°C (-13°F to 149°F)
Ambient humidity Operating: 25% to 85% (with no condensation)
Temperature influence ±3% FS max.
Voltage influence ±1.5% FS max.
Setting resolution 0.01 kPa (1 mm H2O) 0.0 1L/min. 0.1 L/min.
Insulation resistance 100 MΩ(at 500 VDC) between current-carry parts and case
Dielectic strength 1,000 VAC 50/60 Hz 1 min.
Vibration resistance Endurance: 10 to 150 Hz, 0.75 mm amplitude (half cycle) or 100 m/s2 (10G),
4 times each for 8 min. to X, Y and Z directions
Shock resistance Endurance: 300 m/s2 (30G) 3 times each to X,Y and Z directions
Degree of protection IEC60529, IP40
Pressure port Rc (PT) 1/8 female screw or 4.5 dia. pipe Rc (PT) 1/8 female screw
Connection method Pre-wired (standard length: 2 m)
Cable Approved by UL
Weight Approx. 80 g (2.8 oz) Approx. 160 g (5.6 oz)
(incl. packing mat.)
Material Pressure port: resin pipe for 4.5 dia., zinc die-cast for Rc (PT) 1/8 taper screw
Case: heat-resistant PBT
Accessories Mounting bracket and instruction sheet Instruction sheet
Specifications
■RATINGS/CHARACTERISTICS

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Nomenclature
■E8Y PRESSURE SENSOR
Display
1 Numerical value/menu indication
Displays the measured pressure and some menu settings.
2 Unit
Shows the measuring unit. Lit unit is currently in use.
3 OUT 1 indication LED
In measurement mode, it lights when OUT 1 output is on. In
setting mode, it flashes when OUT 1 is being set.
4 OUT 2 indication LED
In measurement mode, it lights when OUT 2 output is on. In
setting mode, it flashes when OUT 2 is being set.
Operation key
5 ADJ
In measurement mode, it adjusts the Zero Point. In setting
mode, it shifts to measurement mode.
6 MODE
Selects the current number setting or menu option.
7 UP/DOWN
In measurement mode, pushing the DOWN key displays the ON
and OFF points of OUT 1; pushing the UP key displays the ON
and OFF points of OUT 2. In setting mode, the UP and DOWN
keys increase or decrease the numeric value, respectively, or
scroll through the menu options.
1
2
3
4
567
Application Examples
Filter
E8Y
E8Y E8Y--F
N2
Lead Frame
E8Y--F
■DETECTION OF
FILTER
CLOGGING
■EXHAUST FAN
ROTATION
DETECTION
■DETECTION OF
FLOW ■AIR FLOW CONTROL

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■FUNCTIONS
Operation
Function Description
Pressure units Switches between mmH2O and kPa, excluding the E8Y--Fflow sensor.
switching
Comparitive ON/ Two independent outputs can be set.
OFF output (two (1) Output mode (mode is automatically determined from the ON and OFF point set values.)
independent Hysteresis mode:
outputs If ON point point set value > OFF point set value
For normal open: For normal close:
Window mode:
If ON point set value < OFF point set value
For normal open: For normal close:
(2) Setting mode
ON point / OFF point: Each output can be set in the range from 0 to the rated value. Set value: 0 to rated value
Output configuration: Each output can be set as normally open (NO) or normally closed (NC).
Setting: NO <> NC
Hysteresis: Each output can be set at 10% of the range from 0 to the rated value. (Effective in
window mode and 2-point auto-teaching mode.) Setting range: (0 to rated value) x 10%
Auto-teaching When the auto-teaching mode is used, measured values can be input as ON point or OFF point set values
instead of key inputs. Two types of auto-teaching are available: 1-point auto-teaching, where only one single
point is set, and 2-point auto-teaching, where two points are set.
(1) 2-point auto-teaching (Hysteresis mode teaching)
This function automatically sets the ON point and OFF point for the comparative output by designating a point
with no object (TEACH 1) and a point with an object (TEACH 2) using actual objects. The outputs are made in
hysteresis mode. The hysteresis is a set value.
The set value is the mid-point between TEACH 1 and TEACH 2.
Example: If TEACH 1 is 0.25 kPa and TEACH 2 is 0.95 kPa, the ON point set value = (0.95+0.25)/2 = 0.60
(This table continues on the next page)
0
Output
ON
OFF
OFF set value ON set value
Pressure value
0
Output
ON
OFF
OFF set value ON set value
Pressure value
Hysteresis width
(set value)
Output
ON
OFF
OFF set value ON set value
Pressure value
Hysteresis width
(set value)
Output
ON
OFF
OFF set value ON set value
Pressure value
Hysteresis width
(set value) Hysteresis width
(set value)
0
Output
ON
OFF
OFF
point
Pressure value
ON
point
Hysteresis width
Set value
TEACH 1 TEACH 2

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Features Table - continued from previous page
Function Description
Auto-teaching (2) 1-point auto-teaching (Window mode teaching)
(continued) This function automatically sets the ON point and OFF point for the comparitive output by inputing a reference
point (TEACH 1) using an actual object. The function operates only when an object exists. The outputs are
made in the window mode. The hysteresis width and window width are set values. (The window width set value
is valid only when 1-point teaching is set. Setting range: (0 to rated value) x 30%)
The ON point and OFF point set values are set at the reference point ±window width.
Example: If the reference point (TEACH 1) is 0.90 kPa and the window width is 0.50 kPa,
the ON set value = (0.90 - 0.50)/2 = 0.20 and the OFF point set value = (0.90+0.50)/2 = 0.70.
Key-protect This function restricts switch operation to prevent the set value from being easily changed.
(Set value lock Set value: OFF <> ON
function)
Set value Hold down the ADJ key for several seconds in the measurement mode to activate this function.
zero-setting
Speed control Select from three values of display speed for the measured pressure values. Set value: 0.1 s, 0.5 s, 1.0 s
function with
measured
pressure display
Error display (1) Pressure warning during zeroing:
Error display and warning if excess pressure or flow (exceeding rated value ±5%) is applied during zeroing.
(2) Teaching error display:
Warning if teaching is unsuccessful.
(3) Short-circuit protection and display:
If overcurrent flows in a connected load, the abnormal status is notified by an error display and the OUT LED,
for the corresponding output, flashing. Transistor acts to cut the abnormal current.
(4) Abnormal pressure or flow detection:
The diplayed value flashes to indicate the abnormal status if the applied pressure or flow exceeds the rated
value by 10%. This error is automatically reset when the supplied value enters the rated range.
(5) ON/OFF point input error warning:
Indicates if the difference between the ON point and OFF point in the window mode exceeds the hysteresis
value + setting resolution (0.01 kPa/1 mmH2O).
0
Output
ON
OFF
OFF
point
Pressure value
ON
point
Hysteresis width
(TEACH 1)
Hysteresis width
Window width
Standard
value
Window width

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■CONTROLLER OF FLOW SENSOR
Vertical-mounting Type
E8Y-A5C-F03V
E8Y-A5C-F20V
Horizontal-mounting Type
E8Y-A5C-F03H
E8Y-A5C-F20H
Dimensions
Unit: mm (inch)
■CONTROLLER OF PRESSURE SENSOR
Standard Port (Pressure Port 4.5 dia.) Type
E8Y-A2C
E8Y-A5C
E8Y-A2Y
E8Y-A5Y
Die-cast Port (Pressure Port Rc(PT) 1/8) Type
E8Y-A2C-R
E8Y-A5C-R
E8Y-A2Y-R
E8Y-A5Y-R
4.5 dia.
pressure port (-)
18
(0.71)
22 (0.87)
15 (0.59)
31 (1.22)
30
(1.18)
5 (0.20)
29.8±0.6
(1.17±0.02)
39.8 (1.57)
10
(0.39)
4.5 dia.
pressure port (+)
22
(0.87)
Four-M3 screw depth 5.2
(hole depth 8.2) Mounting Dimensions
Two-3.7 dia.
Note:When attaching the
Mounting Bracket to
the Sensor, make
sure that each M3
screw is tightened to
a torque of 0.54 N•m
(5.5 kgf•cm) max.
22
(0.87)
31 (1.22)
30
(1.18)
5 (0.20)
17 (0.67)
18
(0.71)
29.8±0.6
(1.17±0.02)
39.8 (1.57)
10
(0.39)
Rc (PT) 1/8
pressure port (-)
22 (0.87)
Rc (PT) 1/8
pressure port (+)
22
(0.87)
Four-M3 screw depth 5.2
(hole depth 8.2) Mounting Dimensions
Two-3.7 dia.
Note:When attaching the
Mounting Bracket to
the Sensor, make
sure that each M3
screw is tightened to
a torque of 0.54 N•m
(5.5 kgf•cm) max.
22
(0.87)
IN
OUT
31 (1.22) 13 dia.
67.3
(2.65)
47.3
(1.86)
30
(1.18)
Two-Rc (PT)
1/8 taper screw
41.3 (1.63) 14 (0.55)
Vinal-insulated round
cable 4.0 dia.4 cores
5 (0.20)
2 m (78.7)
30 (1.18)
10 (0.39)
20 (0.79)
23 (0.91)
39.3
(1.55)
Mounting holes
(through) Two-3.7 dia.
Mounting screw
(through) Two-M3 screw
IN
OUT
31
(1.22)
13 dia.
67.3 (2.65)
47.3 (1.86)
30 (1.18) 41.3 (1.63) 14 (0.55)
7 (0.28)
Two-Rc (PT)
1/8 taper screw
5 (0.20)
2 m (78.7)
30 (1.18)
10 (0.39)
20 (0.79)
Vinal-insulated round
cable 4.0 dia.4 cores
33.5 (1.32)
23 (0.91)
39.3 (1.55)
Mounting holes
(through)
Two-3.7 dia.
Mounting screw
(through)
Two-M3 screw

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Precautions
■ENVIRONMENT
• Do not use this product where explosive gas, ignitable gas,
or any other harmful gas may be present.
• Do not use beyond rated supply voltage or under AC power
supply. Explosion or fire may be caused.
• Do not mix up DC pole's wiring. Explosion or fire may be
caused.
• This product can not be used under corrosive gas or
flammable gas.
• Do not set up beside high voltage line or power line.
• Do not expose to water.
• Do not effect the product by ultrasonic vibration.
Unit: mm (inch)
■PANEL MOUNTING BRACKET
E89-Y1 Panel Mounting Bracket (sold separately)
■ACCESSORIES
Mounting Bracket A Mounting Bracket B
4.2 dia.
13
(0.51)
4.2
(0.17)
19
(0.75)24 (0.94)
35 (1.38) 25 (0.98)
1.8
(0.07) Two-3.7 dia.
30 (1.18)
22
(0.87) 22
(0.87)
26 (1.02)
Provided with E8Y
4.2 dia.
16.4 (0.65)
35 (1.38) 25 (0.98)
Two-3.7 dia.
1.8
(0.07)
Provided with E8Y
4.2
(0.17)
13 (0.51)
19.6 (0.77)
15 (0.59)
15.6
(0.61)
11.4
(0.45)
30 (1.18)
22
(0.87)
Panel Cutout Dimensions
Note: Approximate panel thickness
is 1.0 to 3.5 mm.
70
(2.76) 70
(2.76)
40
(1.57)
48
(1.89)
36+0.5
(1.42+0.02)
0
045+0.5
(1.77+0.02)
0
0
36+0.5
(1.42+0.02)
0
045+0.5
(1.77+0.02)
0
0
40 (1.57)
41.6
(1.64)
38.8 (1.53)
39.8 (1.57) 30.9 (1.22)
40
(1.57)
10.8
(0.43)
57
(2.24)
15 (0.59)
6
(0.24) 4
(0.16)
48 (1.89)
48
(1.89)
36.8 (1.45)
28.9 (1.14)
8.8
(0.35)
57
(2.24)
15 (0.59)
8
(0.31) 6
(0.24)
With Mounting 36 Panel
With Mounting 45 Panel
Cover
Guide
Frame
Holder
■CORRECT USE
• Use within rated pressure.
• Do not mix up connecting +, – sign of pressure port. The "+"
sign is for plus pressure, the "–" sign for minus pressure.
• Do not pull the cable more than 50 N (5.1 kgf).
• Filter the gas with an appropriate air filter so that the applied
gas will be free of moisture or oil.
• When not using linear output and/or the ON/OFF output, cut
the output lead wire and cover the tip with an insulation tube
to prevent wrong connection.

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OMRON ELECTRONICS, INC. OMRON CANADA, INC.
One East Commerce Drive 885 Milner Avenue
Schaumburg, IL 60173 Scarborough, Ontario M1B 5V8
1-800-55-OMRON 416-286-6465
Cat. No. CEDSAX3 10/99 Specifications subject to change without notice. Printed in the U.S.A.
NOTE: DIMENSIONS ARE SHOWN IN MILLIMETERS. To convert millimeters to inches divide by 25.4.