Omron E8F2 - User manual

1
Pressure Sensor E8F2
Incorporates Easy-to-see LED Display
Industry’s smallest, lightest model.
Both analog and digital pressure values are
displayed.
Two independent outputs plus one analog output
are available.
Bears CE markings.
Ordering Information
Sensors
Pressure range ON/OFF output Linear output Model
Positive pressure
0 to 100 kPa
NPN open collector
(i d d t t
1 to 5 V
E8F2-A01C
0 to 1 MPa (independent two
out
p
uts)
E8F2-B10C
Negative pressure 0 to –101 kPa
ou
t
pu
t
s
)
E8F2-AN0C
Accessories (Order Separately)
Appearance Name Model Remarks
Mounting Bracket E89-F3 Provided with the E8F2
Panel-mounting Bracket E89-F4 ---
Application Examples
Chip Attachment Checks Air Pressure Checks PCB and Wafer Attachment
Checks
E8F2
E8F2
E8F2

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2
Specifications
Ratings/Characteristics
Item E8F2-A01C E8F2-B10C E8F2-AN0C
Power supply voltage 12 to 24 VDC ± 10% with a ripple (p-p) of 10% max.
Current consumption 70 mA max. (see note 1)
Pressure type Gauge pressure
Rated pressure range 0 to 100 kPa 0 to 1 MPa 0 to –101 kPa
Pressure setting range 0 to 100 kPa 0 to 1 MPa 0 to –101 kPa
W ithstand pressure 400 kPa 1.5 MPa 400 kPa
Applicable fluid Non-corrosive gas and non-flammable gas
Operating mode Hysteresis mode, window mode, and auto-teaching mode
Repeat accuracy
(ON/OFF output) ±
1% FS max.
Linearity ± 1% FS max.
Response time
(ON/OFF output)
5 ms max.
Linear output 1 to 5 V ± 5% FS with an output impedance of 1 k Ω and a permissible resistive load of 500 k Ω
min.
ON/OFF output NPN open collector (NO/NC)
Load current 30 mA max.
Output applied voltage 30 VDC max.
Residual voltage 1 V max. with a load current of 30 mA
Display (see note 2)
3.5-digit red LED
Green LED bar indicator
The orange LED is lit for two independent outputs with output transistor turned ON
Green unit indicator
Display accuracy ± 3% FS ± 1 digit max.
Circuit protection Reverse polarity connection, load short-circuiting
Ambient temperature
Operating: 0°C to 55 °C
Storage: –10° C to 60 ° C (with no icing)
Ambient humidity Operating/Storage: 35% to 85% (with no condensation)
T emperature influence ± 3% FS max.
V oltage influence ± 1.5% FS max.
Insulation resistance 100 M Ω min. (at 500 VDC) between current-carry parts and case
Dielectric strength 1,000 V AC at 1 min
V ibration resistance
Destruction: 10 to 500 Hz, 1.0-mm double amplitude or 150 m/s
2
, 3 times each for 11 min in X, Y ,
and Z directions
Shock resistance 300 m/s
2
(30G) 3 times each in X, Y , and Z directions
Degree of protection IEC60529, IP50
Pressure port R(PT) 1/8 taper screw and M5 female screw
Connection method Pre-wired (standard length: 2 m)
Cable Approved by UL
W eight (incl. packing material) Approx. 1 10 g
Material
Pressure port Aluminum die cast
Case Heat-resistive ABS
Accessory Mounting Bracket and instruction sheet
Note: 1. The current consumption is approximately 43 mA in energy-saving mode.
2. Display Example of Digital Indicator
Model
Setting unit
kPa mmHg kgf
A
pp
li
e
d
p
ressure
Di
g
i
ta
l
dis
p
la
y
A
pp
li
e
d
p
ressure
Di
g
i
ta
l
dis
p
la
y
A
pp
li
e
d
p
ressure
Di
g
i
ta
l
dis
p
la
y
E8F2-A01C 100 1000
.
Cannot be set
11000
.
E8F2-B10C 1,000 1000 10 1000
.
E8F2-AN0C –101 Ć1 0 1 0
.–760 Ć7 6 0–1.01 Ć1 0 1 0
.

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Note: The “ . ” in the display indicates the decimal point. Its position will not change unless the setting unit is changed.

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Engineering Data
(Typical)
Temperature vs. Linear Output Current Fluctuation
E8F2-A01C Temperature vs. Operating Pressure Fluctuation
E8F2-A01C
Linear output fluctuation (% FS)
Pressure 0
Rated pressure
Temperature ( °C)
Operating pressure fluctuation (% FS)
T emperature ( °C)
Pressure vs. Linear Output
E8F2-A01C Linearity E8F2-A01C
Linear output voltage (V)
Pressure (kPa)
Linearity deviation (%FS)
Pressure (kPa)
Nomenclature
(1)
(4)
(5)
(2)
(3)
(8)
(7)
(6)
Display Panel
1. Bar Indicator (Green)
Indicates the degree of measured pressure according to the
the set pressure.
2.
Numeric and Menu Display (Red)
Indicates measurement values and setting menu items.
3. Unit Indicator (Green)
Indicates the unit used for detection. The unit indicated with
the indicator is the one currently set.
4. OUT1 Indicator (Orange)
Lit when OUT1 is turned ON.
5. OUT2 Indicator (Orange)
Lit when OUT2 is turned ON.
Operation Keys
6. Up Key
7. Down Key
•Used to select or change the set items, set contents, and set
values in setting mode.
•Press either key to check the ON and OFF points in
measurement mode. The values are reset by pressing
both
keys simultaneously .
•Used together with the SET Key for setting the Sensor to a
special
setting mode or energy-saving mode.
8. SET Key
•Used for entering the set contents and set values in setting
mode.
•Used for setting the Sensor to basic setting mode or pressure
setting mode.

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Operation
Output Stage Circuit
Output type NPN output (normally open) NPN output (normally closed)
Model E8F2-A01C
E8F2-B10C
E8F2-AN0C
Timing
chart Hysteresis
mode Pressure
ON point
OFF point
Output
OUT
indicator
(orange) OFF
ON
OFF
ON
Pressure
ON point
OFF point
Output
OUT
indicator
(orange) OFF
ON
Window
mode Pressure
OFF point
ON point
Output
OUT
indicator
(orange) OFF
ON
OFF point – 10% FS
max.
ON point – 10% FS
max.
OFF
ON
Pressure
OFF point
ON point
Output
OUT
indicator
(orange) OFF
ON
OFF point – 10% FS
max.
ON point – 10% FS
max.
Output circuit
Pressure
Sensor
main
circuit
Brown
Black
(ON/OFF1)
30 mA
max.
Load
30 mA
max.
White (ON/OFF2)
Gray
(linear) 1 to 5 V
Load
Blue 0 V
Load
12 to 24 V
Functions and Settings
Function/Setting Description Page
Zero-reset function Sets the measurement value to 0 when the Sensor is exposed to the air . 8
Basic setting
d
Unit setting Changes the unit for detection. 8
g
mode
Pressure setting method --- 9
Output-type setting Selects normally-open or normally-closed output. 9
Pressure
tti d
Manual setting Sets ON and OFF points manually . 10
setting mode
Auto-teaching setting Automatically sets ON and OFF points depending on actual sensing
objects. 11
Special setting
mode
Key-protect setting Protects set value changes due to the incorrect operation of the keys.
Prevents set values changes due to careless key operation.
13
Hysteresis range setting Changes the hysteresis range. 13
Window range setting Changes the window mode setting. 14
Display refresh interval setting Changes the display refresh interval to make the displayed value easier to
see. 14
Measurement value averaging
time setting
Prevents incorrect output due to sudden, instantaneous changes that may
occur with pressure. 14
LED bar indicator range setting Changes the display range of the LED bar indicator in hysteresis mode. 15
Energy-saving
d
Energy-saving function 1 Displays the LED bar indicator but turns the red LED display OFF . 16
gy g
mode
Energy-saving function 2 The LED bar indicator and red LED display flashes in window mode if the
measured value exceeds the set range.
16

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Function/Setting PageDescription
ON/OFF set value check function Checks the set ON and OFF points. 16
Settings
Digital Display
The E8F2 displays alphanumeric characters, such as measure-
ment
values and menu items, with 7-segment LEDs as shown be -
low
for example.
Display Meaning
ope
In output ope ration
kpa Unit (kPa)
wid Width
The following abbreviations are used for the digital display of the
Controller.
Abbreviation Meaning Abbreviation Meaning
Unt Unit DSP Display
M-A Manual/Auto AVE Average
OPE Operation BAR Bar
PRT Protect AUT Auto
HYS Hysteresis ECO Economy
WID Width
a b c d e f g h i j k l m n o p r s t u U w x y =
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Modes
In addition to displaying measurement values, the E8F2 has a variety of functions. These functions are available in four main modes as de -
scribed
below . Three functions are available in measurement mode. For the relationships among each mode and for switching methods, refer
to the following figure.
Power ON
Zero-reset function
ON- and OFF-point check
function
No key operation
No key operation
Measurement
mode
Energy-saving function 1
Energy-saving function 2
or or
Basic Setting Mode
unt: Measurement unit selection
mĆa : Pressure setting method
selection
ope: Output-type selection
Pressure Setting Mode
on: OUT1 ON-point setting
off: OUT1 OFF-point setting
Manual setting
on: OUT2 ON-point setting
off: OUT2 OFF-point setting
t.h1: OUT1 two-point teaching
t.w : OUT1 one-point teaching
Auto-teaching setting
t.h1: OUT2 two-point teaching
t.w : OUT2 one-point teaching
prt: Key-protect setting
Special Setting Mode
hys: Hysteresis width setting
wid: Window width setting
dsp: Measurement value display
refresh interval setting
aUe : Number of measurement times
setting for measurement value averaging
bar : LED bar indicator range setting
or
or
Note: 1. and indicate that the key must be pressed for approximately 2 or 3 s respectively .
2.
The following will result when the E8F2 in basic, pressure setting, or special setting mode is reset to measurement mode.
: The set values are entered.
: The set values are not entered (left as they are).

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*1. Manual setting is available by selecting m (manual) in the pressure setting method selection in basic setting mode.
*2. Auto-teaching setting is available by selecting a (auto-teaching) in the pressure setting method selection in basic setting mode.

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Zero-reset Function
Use the zero-reset function with the Sensor exposed to the air .
Measurement mode
Normal
Error
The
displayed measurement value is reset to 0 by pressing the Up
and Down Key simultaneously . The reset range is within ±5% (FS)
of the rated pressure. If the value is not within the range, an error will
be displayed and the reset will not be enabled.
Basic Setting Mode
The unit of measurement, pressure setting method, and output type are set in basic setting mode.
Measurement
mode
Setting item
1. Press the SET Key for approximately 2 s so that the E8F2
will be set to basic setting mode and unt will be displayed.
2. Set the items unt , mĆa , and ope with Up or Down Key .
Setting item
Unit setting Pressure setting method selection Output-type setting
Unit Setting
Setting item
Unit setting in E8F2-AN0C
1. Press the SET Key while unt is displayed to display the unit presently set.
2. Press the Up or Down Key to select the unit.
3. Press the SET Key to select the displayed unit and display unt again.
4. Press the Up and Down Keys simultaneously , to display unt again without selecting the unit.

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Pressure Setting Method Selection
Setting item
Pressure setting
Manual setting Auto-teaching
m: Manual setting (The ON and OFF
points are manually set.)
a: Auto-teaching (The ON and OFF
points
are set automatically .)
or
1.
Press the SET Key while mĆa is displayed to display the pressure setting method presently set.
2. Press the Up or Down Key to select the pressure setting method.
3. Press the SET Key to select the displayed pressure setting method and display mĆa again.
4. Press the Up and Down Keys simultaneously to display mĆa without selecting the unit.
Output-type Setting
Setting item
Output-type setting
or
or or
nc : Normally closed
no : Normally open
1. Press the SET Key while ope is displayed to display the output type of OUT1 presently set.
2. Press the Up or Down Key to select the output type.
3. Press the SET Key to select the displayed output type and display the output type of OUT2 presently set.
4. Press the Up or Down Key to select the output type.
5. Press the SET Key to select the displayed output type and display ope again.
6. Press the Up and Down Keys simultaneously to display ope again without selecting the unit.
Returning to Measurement Mode
Setting item
Unit setting Pressure setting
Entering the Setting Item:
Press the SET Key for approximately 2 s to
enter
the item that has been set.
or
Output configuration
or Entered
Not entered Measurement
Mode
Not Entering the Setting Item:
Press the Up and Down Keys simultaneously
so that the item set will not be entered.

Normally Open
Hysteresis Mode Window Mode
OFF-point
set value
ON
OFF
ON-point
set value
Pressure
value ON-point
set value OFF-point
set value Pressure
value
Normally Closed
Hysteresis Mode
Window Mode
OFF-point
set value ON-point set value Pressure
value ON-point
set value OFF-point set value Pressure
value
Output
ON
OFF
Output
ON
OFF
Output
ON
OFF
Output
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Pressure Setting Mode
The E8F2 provides output according to the measured
values to control external devices, such as valves and
pumps.
In order to control the external devices, a reference
value
can be set so that the output will be ON or OFF if
the measured values are above or below the refer-
ence
value.
The output ON- and OFF-point settings are described
below, provided that the output is normally open.
The ON and OFF points are set in pressure setting
mode manually or through auto-teaching.
Manual Setting
Note: Manual setting will be possible if m is selected in pressure setting method selection in basic setting mode.
Measurement
mode
Manual setting
or
Displayed
alternately Displayed
alternately Displayed
alternately Displayed
alternately
Press the Up or Down
Key to change the set
value.
1. Press the SET Key , to set the E8F2 to pressure setting mode and display the OUT1 ON point and on alternately .
2.
Press the Up or Down Key to change the OUT1 ON point.
3. Press the SET Key to select the ON point and display the OUT1 OFF point and off alternately .
4.
Press the Up or Down Key to change the OUT1 OFF point.
5. Press the SET Key to select the displayed OFF point and display the OUT2 ON point and on alternately .
6.
Press the Up or Down Key to change the OUT2 ON point.
7. Press the SET Key to select the ON point and display the OUT2 OFF point and off alternately .
8.
Press the Up or Down Key to change the OUT2 OFF point.
9. Press the SET Key to select the OFF point and display the OUT1 ON point and on alternately .
Returning to Measurement Mode
• Entering the Setting Item:
Press the SET Key for approximately 2 s to enter any item that
has been set.
• Not Entering the Setting Item:
Press the Up and Down Keys simultaneously so that any item set
will not be entered.

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Auto-teaching
Auto-teaching allows input measured values to be input as ON- and
OFF-point set values instead of key input. One- or two-point auto-
teaching can be selected.
Note: Auto-teaching will be possible if ais selected in the pres-
sure
setting method selection in basic setting mode.
One-point T eaching
Pressure
value
T wo-point T eaching
Pressure
value
ON
OFF
Output
ON
OFF
Output
Measurement
mode
Setting item
1. Press the SET Key to set the E8F2 to pressure setting mode
and to display OUT1 and t.h1.
2. Press
the Up or Down Key to select the one-point teaching or
two-point teaching method of OUT1 and OUT2.
Auto-teaching
OUT1 two-point teaching OUT1 one-point teaching OUT2 two-point teaching OUT2 one-point teaching
t.h1: T each hysteresis mode at first point
t.w : T each window mode
Two-point T eaching (Hysteresis-mode T eaching)
OUT1
Present measurement
value is displayed.
Present measurement
value is displayed.
1. Press the SET Key under condition 1 below while t.h1 is displayed to display the present measurement value.
2. Check the measurement value and press the Set Key to perform and complete teaching the first point.
3. Press the Set Key under condition 2 below to display the present measurement value.
Condition 1
Two-point T eaching
Condition 2
OFF point ON point
Pressure value
TEACH1 and TEACH2 can be performed in reverse
order. TEACH1 value can be larger than TEACH2
value or vice versa.
ON point: (TEACH1 + TEACH2)/2
OFF point: ON point – 3% FS (default value)
The default value is changeable.
ON
OFF
Output
Not entered
Measurement mode
Entered
or
4. Check the measurement value and press the Set Key to
perform
and complete teaching the second point.
5. Press the SET Key for approximately 2 s while t.h1 is
displayed to enter the values and return the E8F2 to
measurement
mode.
6. Press the Up and Down Keys simultaneously to set the E8F2
to measurement mode without selecting the values.
Note: The E8F2 will be automatically set to hysteresis mode by
performing
two-point teaching.
Two-point teaching is ideal for applications that check for
vacuum
attachment.

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Auto-teaching
• One-point Teaching (Window-mode T eaching)
OUT1
Present value
Measurement mode
Not entered
Entered
or
1. Press the SET Key under condition 3 below while t.w is displayed to display the present measurement value.
One-point T eachingCondition
3
ON point OFF point
Pressure value
ON point: TEACH1 – 30% FS
OFF point: TEACH1 + 30% FS
The default value is 10% FS (changeable).
ON
OFF
Output
2. Check the measurement value and press the Set Key to perform and complete teaching.
3. The values are entered Press the SET Key for approximately 2 s while t.wis displayed to enter the values and return the E8F2 to
measurement
mode.
4. Press the Up and Down Keys simultaneously to return the E8F2 to measurement mode without selecting the values.
Note: The E8F2 will be automatically set to window mode by performing one-point teaching.
One-point teaching is ideal for applications that check original pressure.
•T eaching Error
Present value not
within set range
Meaning of display: er.t(Error teach)
Error display for 1 s
If the present value or the result of calculation after teaching is not
within the range, the SET Key input will not be accepted, in which
case
an error will be displayed for 1 s if teaching is performed.

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Special Setting Mode
Key-protect, hysteresis width, window width, display refresh interval, number of measurement times for averaging, and bar indicator range
settings are set in special setting mode.
Measurement
mode
Setting item
Setting item
Key-protect Hysteresis width Window width Display refresh interval Number of measurement
times for averaging Bar indicator range
1. Press the SET Key and Up Key simultaneously to set the
E8F2 to special setting mode and display prt.
2. Set
the Up or Down Key to select the items prt , hys , wid,
dsp,aUe
, and bar.
Key-protect Settings
No key-protect
or
Press the Up or Down Key
to change the set value.
1. Press the SET Key while prt is displayed to display the
key-protect
value presently set.
2. Press the Up or Down Key to change the value.
3. Press the SET Key to select the displayed value and display
prt again.
4. Press the Up and Down Keys simultaneously display prt
again
without selecting the value.
Key-protect Status
0: No key-protect.
1: No basic or pressure settings are accepted.
2: No input is accepted other than for checking the pressure value or special settings or setting to energy-saving mode.
Hysteresis W
idth Settings
The hysteresis width can be changed by taking the following steps.
or
Press the Up or
Down Key to change
the set value.
Hysteresis Mode
Change in hysteresis
width desired
OFF
point ON
point Pressure value
Window mode
Change in hysteresis
width desired
OFF point
ON point Pressure value
ON
OFF
Output
ON
OFF
Output
1. Press the SET Key while hys is displayed to display the hysteresis width of OUT1 presently set.
2. Press the Up or Down Key to change the set value within a range between 0 and 10.0% FS.
3. Press the SET Key to select the displayed set value and display the hysteresis width of OUT2 presently set.
4. Press the Up or Down Key to change the set value.
5. Press the SET Key to select the displayed set value and display hys again.
6. Press the Up and Down Keys simultaneously to display hys again without selecting the value.
Note: 1. Hysteresis Mode
No manual hysteresis width settings are enabled in hysteresis mode except for those set by auto-teaching.
Window Mode
Hysteresis width settings are enabled when the E8F2 in window mode is set to measurement mode.
2. ON- and OFF-point widths in hysteresis mode are used as hysteresis widths, which cannot be changed in window mode.

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W indow Range Settings
or
Press Up or Down Key
to change set value.
(0 to 30%)
Reference value
(TEACH1)
Pressure
value
ON
OFF
Output
1. Press the SET Key while wid is displayed to display the window width of OUT1 presently set.
2. Press the Up or Down Key to change the set value within a range between 0 and 30% FS of the reference value.
3. Press the SET Key to select the displayed set value and display the window width of OUT2 presently set.
4. Press the Up or Down Key to change the set value.
5. Press the SET Key to select the displayed set value and display wid again.
6. Press the Up and Down Keys simultaneously to display wid again without selecting the set value.
Note: No window width settings will be enabled in hysteresis mode.
Display Refresh Interval Settings
The following refresh intervals are selectable.
0.1: The average value is displayed at 0.1-s intervals.
0.5: The average value is displayed at 0.5-s intervals.
1.0: The average value is displayed at 1.0-s intervals.
or
Press Up or Down Key to
change set value.
1. Press the SET Key while dsp is displayed to display the
display
refresh interval presently set.
2. Press the Up or Down Key to change the set value.
3. Press the SET Key to select the displayed set value and
display dsp
again.
4. Press the Up and Down Keys simultaneously to display dsp
again without selecting the set value.
Note: Set the A VE to the number of measurements for obtaining
an average value.
Measurement V alue A veraging T ime Setting
The number of measurements can be set to 1, 8, 32, or 256.
or
Press Up or Down Key to
change set value.
1. Press the SET Key while aUe is displayed to display the set
value as the number of measurements for averaging
measured
values.
2. Press the Up or Down Key to change the set value.
3. Press the SET Key to select the displayed set value and
display aUe
again.
4. Press the Up and Down Keys simultaneously to display aUe
again without selecting the set value.
Note: If the DSP item is set to 0.5 and A VE item is set to 32, the
E8F2 will measure 32 times, the average value of which will
be treated as one block. The average block value for 0.5 s
will be displayed at 0.5-s intervals.

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Bar Indicator Range Settings
The set value is an indication range per LED between 1 and 20% FS. If the E8F2 is set to AUT , the ideal display range will be set automatically
according to the the ON point presently set.
or
Press Up or Down Key to
change set value.
1. Press the SET Key while bar is displayed to display the bar
display range presently set.
2. Press the Up or Down Key to change the set value.
3. Press the SET Key to select the displayed set value and
display bar
again.
4. Press the Up and Down Keys simultaneously to display bar
again without selecting the set value.
Note: The bar indicator range will be available to OUT1 output
and
will be enabled in hysteresis mode only .
Bar Indicator
The user can visually sense the measured pressure according to the ON and OFF points from the bar indicator . This indicator is available to
OUT1 output only . There is a dif ference in indication mode between hysteresis mode and window mode.
•Hysteresis Mode
The five LEDs indicate the present pressure provided that the ON point is between the second and third LEDs from the left.
1-MPa Model (with 300 kPa as ON Point)
Condition 1 (350 kPa)
300
(ON point) Pressure
value: kPa
The indication range per LED is obtained from the following.
300 kPa x 1 MPa x 1/2
300 kPa x 1/3 = 100 kPa
ON
OFF
Output
The first through third LEDs from the left are all ON under condition
1. The indication range per LED is the set value of the indication
range
in special setting mode. If the set value is aut , the following
ranges are obtainable.
When ON point x Rated pressure x 1/2
Indication range per LED = ON point x 1/3
When ON point > Rated pressure x 1/2
Indication range per LED = (Rated value – ON point) x 1/3
• Window Mode
The distance between ON and OFF points are divided into five equal portions. The present pressure will be indicated by a single LED that will
be ON. The left LED will flash if the present pressure is below the ON point and the right LED will flash if the present pressure is above the
OFF point.
1-Mpa Model (with 300 kPa as ON point and 600 kPa as OFF
point)
Condition 2
(450 kPa)
300 kPa
(ON point) Pressure value: kPa
Condition 3
(700 kPa)
600 kPa
(OFF point)
ON
OFF
Output
Only LED (a) will be lit under condition 2.
Only LED (b) will be lit under condition 3.
The display range per LED will be the following.
Dif ference between ON and OFF points x 1/5
Note: No bar indicator settings in special setting mode will be en -
abled.
Returning
to Measurement Mode
Setting Items
Key-protect Hysteresis width
or
Window width
or
Display refresh interval
or
Number of measurement
times for averaging
or
Bar indicator range setting
or
Entered
Not entered
Entering Set V alues:
Press
the SET Key for approximately 2 s while
the value is displayed.
Not Entering Set V alues:
Press
the Up and Down Keys simultaneously
while the value is displayed.
Measurement mode

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Energy-saving Functions
The E8F2 has functions to save power by turning OFF the numeric and menu display and leaving the bar indicator turned ON.
Energy-saving Function 1
Normal Measurement Mode 1. The
numeric and menu display is turned OFF by pressing the
SET and Down Keys simultaneously in measurement mode.
2. The display is turned ON by pressing the SET and Down Keys
simultaneously again.
Energy-saving Function 2
If the present pressure is not within the set range, the numeric and menu display will flash as a warning.
Displayed for 1 s
Pressure beyond
the set range is
imposed.
Pressure value flashes.
1. If the SET and Down Keys are pressed simultaneously for approximately 3 s in measurement mode, eco will be displayed for 1 s and then
the numeric and menu display will be turned OFF .
2. Provided that the E8F2 is set to window mode, the numeric and menu display will flash together with the bar indicator if the present
pressure
is below ON point or above the OFF point.
3. The numeric and menu display and the bar indicator return to normal condition by pressing the SET and Down Keys simultaneously .
ON- and OFF-point Setting Check Function
Measurement
mode
ON- and OFF-point Set value
or
or
Displayed
alternately
or
Displayed
alternately
or
Displayed
alternately
or
Displayed
alternately
OUT1 ON point OUT1 OFF point OUT2 ON point OUT2 OFF point
The ON and OFF points presently set can be checked.
Press the Up or Down Key in measurement mode to display the OUT1 ON point and on alternately .
Press the Up or Down Key again to display the OUT1 OFF point and off alternately .
Press the Up or Down Key after the above to display the OUT2 items.
If no key is input for approximately 2 s during the above operation, the present measurement value will be displayed automatically .

E8F2 E8F2
17
Dimensions
Note: All units are in millimeters unless otherwise indicated.
Controller
Display panel Pressure-introducing
section
M5 (Depth: 8)
Vinyl-insulated round cable with
five conductors, 4 dia. (0.08 dia. x
30); standard length: 2 m
Two-M3 (Depth: 6)
With Mounting Bracket
Two-M3
Mounting Dimensions
E8F2
Accessories
Two-3.5 dia.
* Provided with E8F2
Four-R1
Two-3.5 dia.
Four-R2.5
R1.6 max.
E89-F3 Mounting Bracket
Panel
Panel Cutout Dimensions
(E89-F4 is available in the following two sizes.)
Panel
Spacer not mounted Spacer mounted
Spacer
Note: The spacer can be removed from the panel-mounting
bracket.
The panel cutout dimensions can be adjusted as
shown above by attaching or detaching the spacer.
E89-F4 Panel-mounting Bracket (Sold Separately)

E8F2 E8F2
18
Precautions
Warnings
Environment
Do not use the Sensor in locations subject to explosive of flammable
gases.
Power Supply Voltage
Do not impose any voltage exceeding the rated voltage on the
E8F2,
otherwise the E8F2 may be damaged.
Short-circuit in Load
Do not short-circuit the load connected to the E8F2, otherwise the
E8F2 may be damaged.
Incorrect Wiring
When supplying power to the E8F2, make sure that the polarity of
the power is correct, otherwise the E8F2 may be damaged.
Precautions
Installation
Do not use the Sensor in an environment subject to corrosive or
combustible gases.
Wiring
•Do not wire power lines or high-tension lines alongside the lines
of the E8F2.
•If no linear output is used, cut the gray lead wire short and apply
insulating tape to the lead wire so that it will not come into contact
with any other terminal.
Mounting
•Mount
the Sensor so that ultrasonic vibrations will not be applied
directly to the Sensor .
•Do not insert any wire into the pressure sections. Doing so may
damage the pressure elements and cause a malfunction.
•Do not apply a tensile strength in excess of 50 N to the cords or
connectors.
•The pressure-introducing section (aluminum die-cast made) is
fixed
with tapered R(PT)1/8 male screws and M5 female screws.
When using tapered screws, use tapered Rc(PT)1/8 female
screws.
•Wrap the tapered R(PT)1/8 male screws with sealing tape to
prevent any leakage. Tighten the male screws to a torque of
10 N S m max.
•T ighten M5 female screws to a torque of 2 N S m max.
•Tightening each male screw by using a 12-mm wrench to hold its
hexagonal head, not its body .
Hexagonal head
E8F2
•When attaching the Mounting Bracket to the Sensor, make sure
that each M3 screw is tightened to a torque of 0.5 N S m max.
Adjustments
•Filter
the gas with an appropriate air filter so that the applied gas
will be free of moisture or oil.
• Be sure to use the Sensor under the rated pressure.
•When setting the set pressure of the ON or OFF point of the
output transistor by pressing the mode selection key, use a
manometer if precise pressure settings are required. The
Sensor has a display error of 3% FS ±1 digit at room
temperature.
Refer to Specifications .
•Reset Time
The Sensor is ready to operate 0.5 s after the Sensor is turned
ON.
Others
Make sure that the Sensor is free of water .
OMRON Corporation
Industrial Sensors Division
Sensing Devices and Components Division H.Q.
28th Fl., Crystal T ower Bldg.,
1-2-27, Shiromi, Chuo-ku,
Osaka 540-6028 Japan
Phone: [phone] Fax: [phone]
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. T o convert grams into ounces, multiply by 0.03527.
Cat. No. D086-E1-1 In the interest of product improvement, specifications are subject to change without notice.
Printed in Japan
0998-3M (0998) a