Datasheet

1. Do not drop, bump, or apply excessive impacts (980 m/s
2
) while
handling. Although the body of the sensor may not be damaged,
the internal parts of the sensor could be damaged and lead to a
malfunction.
2. The tensile strength of the cord is 49 N. Applying a greater pull-
ing 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 13.6 N·m when connect-
ing the pipe to the switch. Exceeding these values may cause
the switch to malfunction.
4. Do not use pressure sensors with corrosive and/or flammable
gases or liquids.
Warning
Handling
Pressure Source
1. Use of poisonous and deleterious substance, corrosive
or flammable fluid.
The materials used for the pressure sensor and the fitting of
this switch are stainless steel 630, stainless steel 304 and
stainless steel 316L (made to order). Do not use fluids such as
poisonous, deleterious substance and corrosive fluid.
The switch is not protected against explosion. Do not use it
with flammable gas and fluid, either.
2. Fluid compatibility
The fluid contact areas are stainless steel 630 (pressure sen-
sor), stainless steel 304 (fitting), stainless steel 316L (pressure
sensor, fittings, made to order). Use fluid that will not corrode
the materials.
(For corrosiveness of fluid, consult with the manufacturer of
the fluid.)
3. Intrusion of water and drain
A pressure sensor of stainless steel diaphragm is used for this
switch. The pressure sensor of this switch can be damaged by
the rush inertia of water when the drain contained in water and
air collide with the pressure sensor when vacuum is broken af-
ter vacuum adsorption is confirmed, and it may cause mal-
function with the pressure indication. If there is a possibility of
water or drainage getting in, narrow the diameter of the piping
to the pressure switch, or make an orifice in the middle of the
piping. Extra attention is needed when the rear surface piping
type model is used.
4. Withstand pressure
When liquid fluid is used, rapid pressure change can be gener-
ated such as water hammer and surge pressure when a valve
is turned ON/OFF.
Install a dumper or an absorber or an accumulator as a coun-
termeasure according to necessity.
It may damage the pressure sensor or the switch if pressure
over the proof pressure is applied even for a second.
<Piping specifications A2(L), B2(L)>
Helium leakage test
Helium leakage test is conducted on the welding parts. Use a fer-
rule by Swagelok (Swagelok
®
fittings) as the TSJ fittings and
packing, ground, etc. by Swagelok (VCR
®
fittings) as the URJ fit-
tings. If a ferrule, packing or ground by other manufacturers are
to be used, conduct helium leakage test before using those prod-
ucts.
∗ Swagelok
®
and VCR
®
are registered trademarks of Swagelok
Company.
Warning
Warning
Connection
1. Incorrect wiring can damage the switch and cause a malfunc-
tion or erroneous switch output.
2. Connections should be done while the power is turned off.
3. Wire separately from power lines and high voltage lines, avoid-
ing 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.
Caution
1. This pressure switch is CE marked; however, it is not equipped
with surge protection against lightning. Lightning surge counter-
measures should be applied directly to system components as
necessary.
2. This pressure switch does not have an explosion proof rating.
Never use in the presence of an explosive gas as this may
cause a serious explosion.
Operating Environment
Warning
1. Do not use this product in an environment that gives oil or sol-
vent splash over it.
2. When this pressure switch is used in a place where water and
dust splash on, water and dust may enter inside the switch
through the atmospheric vent port. Insert a ø4 tube (I.D. ø2.5)
into the atmospheric vent port, and bring piping of the opposite
side up to the safe position to keep it from water and dust. Do
not bend the tubing or close the hole of it. It causes malfunction
with the measurement of positive pressure.
∗ Make sure that the tubing is inserted to the end of the atmosphe-
ric vent port.
∗ Use SMC tubing, TU0425 (Material: Polyurethane, Tubing O.D.
ø4, I.D. ø2.5).
To the safe position to keep
from water and/or dust.
Tube
Atmos-
pheric
vent port
To the safe position to keep
from water and/or dust.
Atmospheric
vent port
Tube
3. Some fluids may generate static electricity when resin piping is
used for piping. Take measures against static electricity with
equipment when this switch is used in connection with resin pip-
ing. Also, the ground should be separate from that of the units
that generate strong electromagnetic noise or high frequency,
otherwise, the switch can be damaged by static electricity.
Operating Environment
Caution
Series ZSE80/ISE80
Specific Product Precautions 1
Be sure to read before handling. Refer to front matters 58 and 59 for Safety Instructions
and pages 687 to 691 for Pressure Switch Precautions.
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