T162-1
Pressure regulation needle (red)
High
Low
Pressure adjustment screw
Pressure needle (black)
MPa
-
+
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
1
0.9
0
Handling instructions and Precautions
Pressure gauge with built-in switches
Mounting and piping
1.
While any mounting direction is acceptable, install a throttle
mechanism in cases where pressure pulsation is particularly
severe, such as when mounted between a valve and an actuator.
For mounting in locations subject to strong vibrations, consult us.
2.
During mounting and piping operations, do not grab the pressure
gauge body to tighten. For tightening, always use a wrench on the
piping connection port hexagonal section. Use a tightening torque
of 2.21 to 3.69 ft
•
lbf when the pressure gauges are mounted on
the pressure port plate with NPT1/4.
Pressure regulation
Rotate the pressure adjustment screw, align the pressure regulation
needle (red) to the set pressure, and set. Rotating the pressure
adjustment screw to the left (counterclockwise) sets to a higher
pressure, and rotating it to the right (clockwise) sets to a lower
pressure. When the air pressure rises to the set pressure, the switch
is activated, and when it falls to less than the setting pressure 10 psi
(response differential), the switch is returned to the original state.
Switch setting method and operations
Setting example: Want the switch to activate when the pressure is at 43.5 psi or less.
Wiring instructions
Pay attention to the NC and NO contacts and the colors of lead wires
(when in wires with connectors, the terminal numbers) for wiring. In the
diagram below, the numbers in parentheses ( ) represent the terminal
numbers, while the
↑
shows the direction of rising pressure. The
indicator lamp switches off when the value is at the set pressure or higher,
and lights up as a warning when the value falls below the set pressure.
General precautions
1.
Use this product to check the supply pressure. For use in precision
control circuits, consult us.
2.
Switch performance may be degraded in installation locations where
the temperature is higher than 113°F or where the humidity is
constantly 50% or less. For use in these kinds of places, consult us.
3.
If there is silicon gas in the ambient atmosphere, it may cause a
contact failure because the contact operation uses micro switches. If
there is silicon oil or silicon products in the vicinity of the product,
eliminate the source of the silicon gas or use a contact protection
circuit (for AC).
When peeling off the cable sheath (for cabtyre sheath only), pay
attention to the lead wire bending direction. Setting the outer lead wires
inside the terminal cover to be about 0.31 in longer than the inner wires
can make it easier to mount the terminal body onto the terminal cover.
For lead wires, without peeling off their insulations, insert them into the
terminal body until they bump up against the lead wire stopper, lower the
contact from above to the lead wire, and use pliers to push them into firm
contact, so that the contacts are touching the core wire.
1.
To regulate the pressure, do not remove the cap on the
lens surface, but insert a small screwdriver into a slit in the
cap instead, and directly rotate the pressure adjustment
screw.
2.
The pressure needle has an indication error of ±7 psi. For
fine-tuning adjustment, apply compressed air at the set
pressure to check the switch triggering action.
●
Wiring instructions with DIN connector
NC: Red (3)
NO: White (2)
Load
(+)
NC: Red (3)
NO: White (2)
Load
COM: Black (1)
(–)
COM: Black (1)
NC: Red (3)
NO: White (2)
Load
(+)
NC: Red (3)
NO: White (2)
Load
COM: Black (1)
(–)
COM: Black (1)
Indicator lights
Pressure switch
setting
Pressure regulation
needle (red needle)
Pressure needle
(black needle)
０
0.2
0.8
1
0
（
MPa
）
psi
30
150
120
− ＋
0.6
0.4
60
90
NC: Red (3)
NO: White (2)
Load
(+)
NC: Red (3)
NO: White (2)
Load
COM: Black (1)
(–)
COM: Black (1)
T162-5
Pressure
increasing
０
0.2
0.8
1
0
（
MPa
）
psi
30
150
120
− ＋
0.6
0.4
60
90
Response differential:
Maximum 10 psi
０
0.2
0.8
1
0
（
MPa
）
psi
30
150
120
− ＋
0.6
0.4
60
90
Terminal
body
Pliers
Lead wire
Cable
Cable ground
Cable gasket
Washer
Gasket
Contact
Terminal body
Lead wire
Terminal
cover
Gasket
Cover
mounting
screw
T162-10
Lead wire
stopper
JIS C3306
VCTF conductor
0.00116 in
2
Finish outside diameter 0.260 in (2 wires)
0.276 in (3 wires)
Note
●
24 VDC
●
100 VAC, 200 VAC
●
24 VDC
●
100 VAC, 200 VAC
●
24 VDC
●
100 VAC, 200 VAC
Set the pressure regulation needle (red needle)
to 43.5 psi.
When the pressure is in the range of 0 to 43.5 psi,
the built-in switch remains at NC, as shown in
the circuit diagram above, and the indicator lamp
lights up.
When the pressure supply increases, close to the
pressure regulation needle (red needle), the built-in
switch flips to NO, as shown in the circuit diagram
above, the load current flows, and the indicator lamp
goes out. The position at this time is A. At this time
switching position A has a maximum 14.5 psi
differential in relation to the pressure needle (black
needle) because of a pressure needle tolerance of
±7 psi and repeatability accuracy of ±7 psi have
accumulated.
When the pressure falls, and the pressure needle
(black needle) is higher than the pressure
regulation needle (red needle), the internal
switch changes to NC with a maximum response
differential of 10 psi. When this happens, check
the switching position and adjust the pressure
regulation needle (red needle). Note that NC
cannot be used as a load contact.
Use the switching of NO to OFF by controlling a
relay or other B-contact device.
NC: Red (3)
NO: White (2)
Load
(+)
NC: Red (3)
NO: White (2)
Load
COM: Black (1)
(–)
COM: Black (1)
For the connector type, the connector wiring position at time of
delivery is in the connecting thread side (back side).
Note
