SMC Networks ISE70 User manual

2-colour Display Type Digital Pressure Switch
Series ISE70/75/75H
ISE70
(
1MPa
)
ISE75
(
10MPa
)
For General FluidsFor Air ISE75H
(
15MPa
)
PRESSURE SWITCH
OUT1
U P
SET
DOWN
MPa
OUT1
U P
SET
DOWN
MPa
PRESSURE SWITCH
OUT1
U P
SET
DOWN
MPa
PRESSURE SWITCH
Plain Grey Orange
• Anti-chattering
• Zero out
• Unit display switching
• Display calibration
• Key lock
Function
•User-selectable mounting orientation
With Bracket
2-colour Display (green and red)
•Selectable from four patterns
ON OFF
Easily identifiable abnormal readings
Easily identifiable abnormal readings
10 mm character height
•Lead wire with M12 connector (5m)
•Straight and right-angled connectors
®
10MPa·15MPa10 MPa·15 MPa
1MPa1MPa
(ISE75)
(ISE70)
(ISE75H)
2-colour
digital
2-colour
digital IP67IP67
• Withstand pressure:Withstand pressure: Rated pressure x 3Rated pressure x 3
• Model with initial display settings of PSI is also available as standard .
• Port size
Rc1/4, NPT1/4, G1/4(ISO1179)
Metal Body Type
Metal Body TypeMetal Body Type
(Die-cast aluminum)
red
green
red
green
green
red
red
green
(1)
(2)
(3)
(4)
M12 Connector
CAT.ES100-52 -UK
A
For
General
Fluids
For
General
Fluids
For AirFor Air
• Withstand pressure: Rated pressure x 3
•
Model with initial display settings of PSI is also available as standard .
• Port size
Rc1/4, NPT1/4, G1/4(ISO1179)
Rated PressureRated Pressure

1
How to Order
2-colour Display
Digital Pressure Switch/For Air
Series ISE70
Optional Part No.
When option parts are required separately, use the following part numbers to place an order.
Option
Bracket
Part No. Note
ZS-31-A
Lead wire with M12 connector,
straight Lead wire length: 5m
ZS-31-B
Lead wire with M12 connector,
right-angled Lead wire length: 5m
ZS-31-C
Bracket B and the bracket assembly
make up one set.
Bracket B
Bracket assembly
OUT1
UP
SET
DOWN
®
ISE70
1MPa 02 43
02
N02
F02
Rc1/4
NPT1/4
G1/4 (ISO1179) Note 1)
Piping
Nil
P
MWith unit display switching function
Pressure unit: PSI (Initial value)
With unit display switching function
Fixed SI unit Note 1)
Display unit
Nil
S
None
Lead wire with M12 connector (5m),
straight
L
Lead wire with M12 connector (5m),
right-angled
Option 1
Nil
A
None
With bracket
Option 2
M
43
Fixed setting:
NPN open collector 1 output (Pin no. 4) +
PNP open collector 1 output (Pin no. 2)
65
PNP open collector 1 output (Pin no. 4)
Output
Note 1) Fixed unit: MPa
Note: Mounting screws are not included.
Note) Mounting screws
are not included.
1
2
3
4
Brown
White
Blue
Black
DC (+)
OUT1 (PNP)
DC (–)
OUT1 (NPN)
Connector Pin
Assignments
Output -43
1
2
3
4
Brown
White
Blue
Black
DC (+)
NC
DC (–)
OUT1 (PNP)
Output -65
21
4
3
Note 1) G1/4: Applicable to ISO1179-1

2
Specifications
ISE70
Rated pressure range
Set pressure range
Proof pressure
Set pressure resolution
Fluid
Power supply voltage
Current consumption
Switch output
Repeatability
Hysteresis
Display
Display accuracy
Indication light
Functions
Environ-
mental
resistance
Temperature characteristics
(Based on 25°C: Operating temperature range)
Standard
Wetted material
Port size
Lead wire
Mass (Weight)
Max. load current
Max. applied voltage
Residual voltage
Response time
Short circuit protection
Hysteresis mode
Window comparator mode
Enclosure
Fluid temperature range
Operating temperature range
Operating humidity range
Withstand voltage
Insulation resistance
Vibration resistance
Impact resistance
0 to 1MPa
–0.1 to 1MPa
1.5MPa
0.01MPa
Air, lnert gas, Non-flammable gas
12 to 24 VDC, Ripple (p-p) 10% or less (with power supply polarity protection)
55 mA or less (at no load)
Output -43: Fixed setting; NPN open collector 1 output (Pin no. 4) + PNP open collector 1 output (Pin no. 2) Note 1)
Output -65: PNP open collector 1 output (Pin no. 4) Note 1)
80 mA
30 V (with NPN output)
1 V or less (with load current of 80 mA)
2.5 ms (Response time selections with anti-chattering function: 20 ms, 160 ms, 640 ms, 1000 ms, 2000 ms)
With short circuit protection
±0.5%F.S.
Adjustable (can be set from 0)
3 ditit, 7-segment indicator, 2-colour display (red and green) can be interlocked with the switch output, Sampling cycle: 5 times/s
±2%F.S. ±1 digit or less (at 25°C ±3°C)
Light up when output is ON (Green)
Anti-chattering function, Unit display switching function, Zero out function, Key lock function
IP67
0 to 50°C (with no freezing or condensation)
Operating: 0 to 50°C, Stored: –10 to 60°C (with no freezing or condensation)
Operating and stored: 35 to 85%RH (with no condensation)
1000 VAC for 1 min. between live parts and enclosure
50 MΩor more between live parts and enclosure (at 500 VDC Mega)
10 to 500 Hz, 1.5 mm or 98 m/s2amplitude in X, Y, Z directions for 2 hours each
980 m/s2in X, Y, Z directions 3 times each (Non energized)
±2%F.S. or less
Compliant with CE Marking and UL/CSA (UL508) standards
Fitting: C3602 (electroless nickel plated), Sensor port: PBT, Sensor pressure receiving area: silicon, O-ring: NBR
02: Rc1/4, N02: NPT1/4, F02: G1/4 (ISO1179) Note 2)
Lead wire with M12 4-pin pre-wired connector (5 m)
190 g (excluding the lead wire with M12 4-pin pre-wired connector)
Series ISE70
Digital Pressure Switch
For Air
See the operation manual for information on how to
set and on handling precautions.
Note 1) The NPN and PNP outputs function for a single set point.
Note 2) G1/4: Applicable to ISO1179-1
Internal Circuit and Wiring Examples
Fixed setting:
NPN open collector output + PNP open collector output
(the pressure set point for switching the output signal is common to both outputs.)
Maximum 30 V (NPN only), 80 mA, Residual voltage 1 V or less
Output -43
Main circuit
12 to
24 VDC
+
–
(Blue)
DC (–)
Load
Load
DC (+)
(Brown)
(White)
OUT1 (PNP)
(Black)
OUT1 (NPN)
Output -65
12 to
24 VDC
(Blue)
DC (–)
Main circuit
+
–
Load
DC (+)
(Brown)
OUT1 (PNP)
(Black)
N.C.
(White)

3
How to Order
2-colour Display
Digital Pressure Switch/For General Fluids
Series ISE75/75H
Optional Part No.
®
ISE75H
ISE75
15MPa
10MPa
02
Output
02
N02
F02
Rc1/4
NPT1/4
G1/4 (ISO1179) Note 1)
Piping
Nil
S
None
Lead wire with M12 connector (5m),
straight
L
Lead wire with M12 connector (5m),
right-angled
Option 1
Nil
A
None
With bracket
Option 2
M
02 43 M
When option parts are required separately, use the following part numbers to place an order.
Option
Bracket
Part No. Note
ZS-31-A
Lead wire with M12 connector,
straight Lead wire length: 5m
ZS-31-B
Lead wire with M12 connector,
right-angled Lead wire length: 5m
ZS-31-C
Bracket B and the bracket assembly
make up one set.
Bracket B
Bracket assembly
OUT1
UP
SET
DOWN
43
Nil
P
MWith unit display switching function
Pressure unit: PSI (Initial value)
With unit display switching function
Fixed SI unit Note 1)
Display unit
Note 1) Fixed unit: MPa
1
2
3
4
Brown
White
Blue
Black
DC (+)
OUT1 (PNP)
DC (–)
OUT1 (NPN)
Connector Pin
Assignments
Output -43
1
2
3
4
Brown
White
Blue
Black
DC (+)
NC
DC (–)
OUT1 (PNP)
Output -65
43
Fixed setting:
NPN open collector 1 output (Pin no. 4) +
PNP open collector 1 output (Pin no. 2)
65
PNP open collector 1 output (Pin no. 4)
Note 1) G1/4: Applicable to ISO1179-1
21
4
3

4
Series ISE75/75H
Specifications
Internal Circuit and Wiring Examples
Fixed setting:
NPN open collector output + PNP open collector output
(the pressure set point for switching the output signal is common to both outputs)
Maximum 30 V (NPN only), 80 mA, Residual voltage 1 V or less
Main circuit
12 to
24 VDC
+
–
(Blue)
DC (–)
Load
Load
DC (+)
(Brown)
(White)
OUT1 (PNP)
(Black)
OUT1 (NPN)
ISE75
Rated pressure range
Set pressure range
Proof pressure
Set pressure resolution
Fluid
Power supply voltage
Current consumption
Switch output
Repeatability
Hysteresis
Display
Display accuracy
Indication light
Functions
Environ-
mental
resistance
Temperature characteristics
(Based on 25°C: Operating temperature range)
Standard
Wetted material
Port size
Lead wire
Mass (Weight)
Max. load current
Max. applied voltage
Residual voltage
Response time
Short circuit protection
Hysteresis mode
Window comparator mode
Enclosure
Fluid temperature range
Operating temperature range
Operating humidity range
Withstand voltage
Insulation resistance
Vibration resistance
Impact resistance
0 to 10MPa
0.4 to 10MPa
30MPa
ISE75H
0 to 15MPa
0.5 to 15MPa
45MPa
Digital Pressure Switch
For General Fluids
See the operation manual for information on how to
set and on handling precautions.
Note 1) The NPN and PNP outputs function for a single setpoint.
Note 2) G1/4: Applicable to ISO1179-1
0.1MPa
Fluid that will not corrode stainless steel SUS430 and SUS630
12 to 24 VDC, Ripple (p-p) 10% or less (with power supply polarity protection)
55 mA or less (at no load)
Output -43: Fixed setting; NPN open collector 1 output (Pin no. 4) + PNP open collector 1 output (Pin no. 2) Note 1)
Output -65: PNP open collector 1 output (Pin no. 4) Note 1)
80 mA
30 V (with NPN output)
1 V or less (with load current of 80 mA)
2.5 ms
(Response time selections with anti-chattering function: 20 ms, 160 ms, 640 ms, 1000 ms, 2000 ms)
With short circuit protection
±0.5%F.S.
Adjustable (can be set from 0)
3 ditit, 7-segment indicator, 2-colour display (red and green) can be interlocked with the switch output, Sampling cycle: 5 times/s
±2%F.S. ±1 digit or less (at 25°C ±3°C)
Light up when output is ON (Green)
Anti-chattering function, Unit display switching function, Zero out function, Key lock function
IP67
–5 to 80°C (with no freezing or condensation)
Operating: –5 to 50°C, Stored: –10 to 60°C (with no freezing or condensation)
Operating and stored: 35 to 85%RH (with no condensation)
250 VAC for 1 min. between live parts and enclosure
50 MΩor more between live parts and enclosure (at 50 VDC Mega)
10 to 500 Hz, 1.5 mm or 98 m/s2amplitude in X, Y, Z directions for 2 hours each
980 m/s2in X, Y, Z directions 3 times each (Non energized)
±3%F.S. or less
Compliant with CE Marking and UL/CSA (UL508) standards
Pressure receiving area: Stainless steel SUS630, Fittings: Stainless steel SUS430
02: Rc1/4, N02: NPT1/4, F02: G1/4 (ISO1179) Note 2)
Lead wire with M12 4-pin pre-wired connector (5 m)
210 g (excluding the lead wire with M12 4-pin pre-wired connector)
Output -43 Output -65
12 to
24 VDC
(Blue)
DC (–)
Main circuit
+
–
Load
DC (+)
(Brown)
OUT1 (PNP)
(Black)
N.C.
(White)

5
Series ISE70/75/75H
Description
Functions
Error description
Over-current
error
Condition Solution LCD display
A load current
greater than 80 mA
is turned on through
either or both of the
switch outputs.
Shut off the power
supply. After eliminating
the output factor that
caused the excess
current, turn the power
supply back on.
Residual
pressure
error
A pressure level greater
than ±7% F.S. has been
applied during zero
adjustment. The switch
will automatically return
to measuring mode in
three seconds, however.
Note that the range of
zero adjustment differs
by ±1 digit due to switch-
to-switch variations.
Bring the pressure
back to atmospheric
pressure and try
using the zero out
function.
Applied
pressure
error
Supply pressure
exceeds the maximum
set pressure.
Reduce/Increase
supply pressure to
within the set
pressure range.
Supply pressure is
below the minimum
set pressure.
System error
Internal data error
Internal data error
Internal data error
Internal data error
Shut off the power
supply. Turn the
power supply back
on.
OUT1
MPa
U P
SET
DOWN
PRESSURE SWITCH
LCD display
DOWN button
Indication light (Green)
UP button
SET button
0Applied pressure
+
: Factory setting display value
set prior to shipment
: Display calibration range
±5%R.D.
Displayed pressure value
Display calibration function
This function eliminates slight differences in the output values and
allows uniformity in the numbers displayed.
Displayed values of the pressure sensor can be calibrated to within
±5% of their readings.
Peak/Bottom hold function
This function constantly detects and updates the maximum and
minimum pressure values and allows to hold the display value.
Key lock function
This function prevents incorrect operations such as changing the set
value accidentally.
Zero out (Zero ADJ) function
The measured pressure reading can be adjusted to zero.
More specifically, the factory-set reading can be corrected to within ±7% F.S.
Unit display switching function
The reading unit can be selected.
Anti-chattering function
A large bore cylinder or ejector consumes a large amount of air in operation and
may experience a temporary drop in the primary pressure. This function prevents
detection of such temporary drops in primary pressure as abnormal pressure.
Response time selections: 20ms, 160ms, 640ms, 1000ms, 2000ms
Error function
Take the following corrective solutions when error occurs.
Note) If the switch will not recover to normal even after all of the
above mentioned solutions have been applied, consult SMC for
investigation.
Unit/Reading resolution
Pa
kgf/cm2
bar
psi
ISE70
0.01MPa
0.1
0.1
1
ISE75/75H
0.1MPa
1
1
1 (x 10)
Displays the current pressure
condition, set mode and error code.
The display mode can be selected
from four options: fixed green
single-colour reading, fixed red
single-colour reading, green
reading interlocked with output for
switching to red reading, and red
reading interlocked with output for
switching to green reading.
Use this button to change the mode
or decrease the ON/OFF set value.
It also allows you to switch to the
bottom value display mode.
Use this button to change the mode
or increase the ON/OFF set value. It
also allows you to switch to the peak
value display mode.
Use this button to switch the mode
and set the set value.
Displays the switch operation status.
Note) When the display calibration function is used, the set pressure value
may change ±1 digit.

6
Dimensions
ISE70 75 75H
/
With bracket
1
2
3
4
Brown
White
Blue
Black
DC (+)
OUT1 (PNP)
DC (–)
OUT1 (NPN)
Connector Pin
Assignments
Output -43
1
2
3
4
Brown
White
Blue
Black
DC (+)
NC
DC (–)
OUT1 (PNP)
Output -65
399 34
70
20
첸24
15.7
14.5
14.5
(28.7)
(38.2)
OUT1
MPa
U P
SET
DOWN
Piping port
02: Rc1/4
N02: NPT1/4
F02: G1/4 (ISO1179)
Lead wire with M12
connector (5m)
straight
right-angled
Lead wire with M12
connector (5m)
44.59 34
90
첸24
(28.7)
(38.2)
OUT1
MPa
U P
SET
DOWN
Piping port
02: Rc1/4
N02: NPT1/4
F02: G1/4 (ISO1179)
35
46
60
18.3 6
2–6.5
Note) The connector faces down
(toward the piping). Do
not attempt to rotate the
connector, as it is not
rotatable.
21
4
3
Series ISE70/75/75H
Digital Pressure Switch
For Air/For General Fluids
/

7
Series ISE70/75/75H
Safety Instructions
Note 1) ISO 4414: Pneumatic fluid power -- General rules relating to systems
Note 2) JIS B 8370: Pneumatic system axion
Warning
Caution : Operator error could result in injury or equipment damage.
Warning : Operator error could result in serious injury or loss of life.
Danger :
In extreme conditions, there is a possible result of serious injury or loss of life.
These safety instructions are intended to prevent a hazardous situation and/or
equipment damage. These instructions indicate the level of potential hazard by a
label of "Caution","Warning",or "Danger". To ensure safety, be sure to
observe ISO 4414
Note 1),JIS B 8370 Note 2) and other safety practices.
1. The compatibility of pneumatic equipment is the responsibility of the person
who designs the pneumatic system or decides its specifications.
Since the products specified here are used in various operating conditions, their compatibility for the
specific pneumatic system must be based on specifications or after analysis and/or tests to meet your
specific requirements. The expected performance and safety assurance will be the responsibility of the
person who has determined the compatibility of the system. This person should continuously review the
suitability of all items specified, referring to the latest catalogue information with a view to giving due
consideration to any possibility of equipment failure when configuring a system.
2. Only trained personnel should operate pneumatically operated machinery and
equipment.
Compressed air can be dangerous if an operator is unfamiliar with it. Assembly, handling or repair of
pneumatic systems should be performed by trained and experienced operators.
3. Do not service machinery/equipment or attempt to remove components until
safety is confirmed.
1. Inspection and maintenance of machinery/equipment should only be performed once measures to
prevent falling or runaway of the driver objects have been confirmed.
2. When equipment is to be removed, confirm the safety process as mentioned above. Cut the supply
pressure for this equipment and exhaust all residual compressed air in the system.
3. Before machinery/equipment is restarted, take measures to prevent shooting-out of cylinder piston
rod, etc.
4. Contact SMC if the product is to be used in any of the following conditions:
1. Conditions and environments beyond the given specifications, or if product is used outdoors.
2. Installation on equipment in conjunction with atomic energy, railway, air navigation, vehicles, medical
equipment, food and beverages, recreation equipment, emergency stop circuits, clutch and brake
circuit in press applications, or safety equipment.
3. An application which has the possibility of having negative effects on people, property, or animals,
requiring special safety analysis.

8
1. Operate the switch only within the specified
voltage.
Use of the switch outside the range of the specified voltage can
cause not only malfunction and damage of the switch but also
electrocution and fire.
2. Do not exceed the maximum allowable load
specification.
A load exceeding the maximum load specification can cause
damage to the switch or shorten its operating life span.
3. Do not use a load that generates surge
voltage.
Although surge protection is installed in the circuit at the output
side of the switch, damage may still occur if a surge is applied
repeatedly. When a surge generating load such as a relay or
solenoid is directly driven, use a type of switch with a built-in
surge absorbing element.
4. Since the type of applicable fluid varies de-
pending on the product, be sure to verify the
specifications.
The switches do not have an explosion proof rating. To prevent
a possible fire hazard, do not use with flammable gases or
fluids.
5. Strictly adhere to the rated pressure range
and the maximum withstand pressure.
Operating the switch under pressures exceeding the range may
cause the switch to malfunction.
If surge pressures exceeding the maximum withstand pressure
are likely to arise, take measures to prevent such surge
pressures from being applied to the switch. Operating the
switch under pressures exceeding the maximum operating
pressure may destroy the switch. 1. Perform periodic inspections to ensure
proper operation of the switch.
Unexpected malfunctions may cause possible danger.
2. Take precautions when using the switch for
an interlock circuit.
When a pressure switch is used for an interlock circuit, devise a
multiple interlock system to prevent trouble or malfunctioning.
Verify the operation of the switch and interlock function on a
regular basis.
Warning Warning
Warning
1. If the equipment is not operating properly, do
not continue to use it.
Connect air and power after installation, repairs, or
modifications, and verify proper installation. The switch should
be checked for proper operation and possible leaks.
2. Apply wrench only to the metal part of the
main housing when installing the pressure
switch onto the system piping.
Do not apply a wrench to the body part as this may damage the
switch.
Warning
1. Never use in the presence of explosive gases.
The switches do not have an explosion proof rating. Never use
in the presence of an explosive gas as this may cause a
serious explosion.
Warning
Design and Selection Wiring
Operating Environment
Mounting
Maintenance
1. Verify the colour and terminal number when
wiring.
Incorrect wiring can cause the switch to be damaged and
malfunction. Verify the color and the terminal number in the
instruction manual when wiring.
2. Avoid repeatedly bending or stretching the
lead wire.
Repeatedly applying bending stress or stretching force to the
lead wire will cause it to break. If you believe the lead wire is
damaged and likely to cause malfunctions, replace it.
3. Confirm proper insulation of wiring.
Make sure that there is no faulty wiring insulation (contact with
other circuits, ground fault, improper insulation between
terminals, etc.). Damage may occur due to excess current flow
into a switch.
Series ISE70/75/75H
Pressure Switch Precautions 1
Be sure to read before handling.

9
Selection
Warning
Mounting
Warning
Wiring
Warning
1. Monitor the internal voltage drop of the switch.
When operating below a specified voltage, it is possible that
the load may be ineffective even though the pressure switch
function is normal. Therefore, the formula below should be
satisfied after confirming the minimum operating voltage of the
load.
1. Data of the digital pressure switch will be
stored even after the power is turned off.
Input data (set pressure, etc.) will be stored in EEPROM so
that the data will not be lost after the pressure switch is turned
off. (Data will be stored for up to 100,000 hours after the power
is turned off.)
Caution
1. Use the switch within the specified fluid and
ambient temperature range.
Take measures to prevent moisture from freezing in circuits
when below 5°C, since this may cause lead to a malfunction.
The installation of an air dryer is recommended for eliminating
condensate and moisture. Never use the switch in an
environment where there are drastic temperature changes
even when these temperatures are operated within the
specified temperature range.
Warning
Pressure Sources
1. Do not use in an area where surges are
generated.
When there are units that generate a large amount of surge in
the area around pressure switches (e.g., solenoid type lifters,
high frequency induction furnaces, motors), this may cause
deterioration or damage to the switches' internal circuitry.
Avoid and protect against sources of surge generation and
crossed lines.
Operating Environment
Warning
1. Cleaning of the switch body
Wipe off dirt with a soft cloth. If dirt does not come off easily,
use a neutral detergent diluted with water to dampen a soft
cloth. Wipe the switch only after squeezing the excess water
out of the dampened cloth. Then finish off by wiping with a dry
cloth afterwards.
Maintenance
Caution
Supply
voltage – >
Internal voltage
drop of switch Minimum operating
voltage of load
Series ISE70/75/75H
Digital Pressure Switch Precautions 1
Be sure to read before handling.
1. Operation
Refer to the instruction manual for the operation of the digital
pressure switch.
2. Pressure port
Do not introduce any wire or similar object to a pressure port as
this may damage the pressure sensor and cause a malfunction.
1. Do not wire in conjunction with power lines
or high voltage lines.
Wire separately from power lines and high voltage lines,
avoiding wiring in the same conduit with these lines. Control
circuits including switches may malfunction due to noise from
these other lines.
2. Do not allow loads to short circuit.
Although digital pressure switches indicate excess current error
if loads are short circuited, all incorrect wiring connections
cannot be protected. Take precautions to avoid incorrect
wiring.
3. Connect a DC(–) wire (blue) as close as
possible to the DC power supply GND
terminal.
Connecting the power supply away from the GND terminal can
cause malfunctions due to noise from devices that are
connected to the GND terminal.
4. Do not attempt to insert or pull the pressure
sensor or its connector when the power is
on.
5. A cable with a right-angled connector is also
available.
The right-angled connector faces down (toward the piping).
Do not attempt to rotate the connector, as it is not rotatable.

10
Bracket B
Bracket assembly
Bracket B and the bracket
assembly make up one set.
OUT1
UP
SET
DOWN
1. Do not drop, bump, or apply excessive im-
pacts (980m/s2) while handling. Although the
body of the sensor may not be damaged, the
internal parts of the sensor could be dama-
ged and lead to a malfunction.
2. The tensile strength of the cord is 50N. Appl-
ying a greater pulling force on it can cause a
malfunction. When handling, hold the body of
the sensor––do not dangle it from the cord.
3. Do not exceed the screw-in torque of 40 N·m
for ISE70 and 80 N·m for ISE75/75H when
connecting the pipe to the switch. Exceeding
these values may cause the switch to mal-
function.
4. Do not use pressure sensors with corrosive
and/poisonous or flammable gases or liquids.
5. When connecting the pipe to the switch,
engage the wrench horizontally to the
chamfered barrel of the fitting. Be careful not
to apply excessive force to the switch's main
unit.
Warning Handling
1. Incorrect wiring can damage the switch and
cause a malfunction or erroneous switch out-
put.
2. Connections should be done while the power
is turned off.
3. Wire separately from power lines and high
voltage lines, avoiding wiring in the same
conduit with these lines. Malfunctions may
occur due to noise from these other lines.
4. If a commercial switching regulator is used,
make sure that the F.G. terminal is grounded.
Connection
Warning
1. Our pressure switches are CE marked;
however, they are not equipped with surge
protection against lightning. Lightning surge
countermeasures should be applied directly
to system components as necessary.
2. Our pressure switches do not have an
explosion proof rating. Never use in the
presence of an explosive gas as this may
cause a serious explosion.
1. Do not use in an environment with spattering
liquid of oil or solvent.
Operating Environment
Warning
Caution
1. Regarding poisonous, corrosive or
combustible gases
Do not use the switch for poisonous or corrosive gases. Also
note that the switch is not explosion-proof.
2. Regarding use of the switch for fluids
Do not use the switch for any corrosive or flammable gas or
fluid (ISE70 series).
Do not use the switch for any fluid capable of corroding
SUS430 or SUS630 stainless steel; or for any flammable gas
or liquid (ISE75/75H series).
(For information on the corrosiveness of fluids, contact the fluid
manufacturers.)
Pressure Sources
Warning
Caution Mounting
Series ISE70/75/75H
Specific Product Precautions 1
Be sure to read before handling. Refer to pages 7 through 9 for safety instructions and pressure
switch precautions.
1. Connecting pipe to the switch
When connecting the pipe to the switch, apply a torque of
13.6 N·m or greater for the ISE70 series and a torque of 25
N·m or greater for the ISE75/75H series.
2. Bracket-mounting the switch
Interlock the neck of the switch's piping port between the
bracket assembly and bracket B. Using two M6 screws, mount
the switch onto a wall. If the panel thickness is less than 5
mm, use nuts or other alternative means to increase the
mounting strength.

1. Set the pressure within the rated pressure range.
The set pressure range is the range of pressure that is possible in setting.
The rated pressure range is the range of pressure that satisfies the specifications (accuracy, linearity, etc.) on the sensor.
Although it is possible to set a value outside the rated pressure range, the specifications will not be guaranteed even if the value stays
within the set pressure range.
Caution Set pressure range and rated pressure range
10MPa
10MPa
01MPa
–100kPa
(–0.1MPa)
1MPa
ISE75H
For 15MPa
(For General Fluids)
15MPa
15MPa
0
0.5MPa
0
0.4MPa
Switch –100kPa 0 0.5MPa 10MPa 15MPa
Pressure range
ISE70
ISE75
Rated pressure range of switch
Set pressure range of switch
For 1MPa
(For Air)
For 10MPa
(For General Fluids)
0.4MPa 1MPa
The ISE75/75H switch shows zero (0) when the pressure being applied goes below the lower limit of the set pressure range.
Series ISE70/75/75H
Specific Product Precautions 2
Be sure to read before handling. Refer to pages 7 through 9 for safety instructions and pressure
switch precautions.
SMC CORPORATION (Europe)
Austria [phone] www.smc.at [email protected]
Belgium [phone] www.smcpneumatics.be [email protected]
Bulgaria [phone] www.smc.bg [email protected]
Croatia [phone] www.smceu.com [email protected]
Czech Republic [phone] www.smc.cz [email protected]
Denmark [phone] www.smcdk.com [email protected]
Estonia [phone] www.smcpneumatics.ee [email protected]
Finland [phone] www.smc.fi [email protected]
France [phone] www.smc-france.fr [email protected]
Germany [phone] www.smc-pneumatik.de [email protected]
Greece [phone] www.smceu.com [email protected]
Hungary [phone] www.smc-automation.hu [email protected]
Ireland [phone] www.smcpneumatics.ie [email protected]
Italy [phone] www.smcitalia.it mailbo[email protected]
Latvia [phone] www.smclv.lv [e-mail]
Lithuania [phone]
Netherlands [phone] www.smcpneumatics.nl [e-mail]
Norway [phone] www.smc-norge.no [email protected]
Poland [phone] www.smc.pl [email protected]
Portugal [phone] www.smces.es [email protected]
Romania [phone] www.smcromania.ro [email protected]
Russia [phone] www.smc-pneumatik.ru [email protected]
Slovakia [phone] www.smc.sk [email protected]
Slovenia [phone] www.smc-ind-avtom.si [email protected]
Spain [phone] www.smces.es [email protected]
Sweden [phone] www.smc.nu [email protected]
Switzerland [phone] www.smc.ch [email protected]
Turkey  [phone] www.entek.com.tr [email protected]
UK  [phone] www.smcpneumatics.co.uk [email protected].uk
European Marketing Centre [phone] www.smceu.com
SMC CORPORATION [phone] www.smcworld.com
Specifications are subject to change without prior notice
and any obligation on the part of the manufacturer.
Produced and printed by SMC European Marketing Centre 12/04
SMC CORPORATION 1-16-4 Shimbashi, Minato-ku, Tokio 105 JAPAN; Phone:[phone] Fax:[phone]