VX2110-01T-3CR1 SMC Corporation, VX2110-01T-3CR1 Datasheet - Page 35

• Manufacturer Part Number: VX2110-01T-3CR1
• Description: Process Solenoid Valve, 2 port, direct operated, 1/8 port, NC, 110VAC, conduit
• Manufacturer: SMC Corporation
• Type: Direct Operatedr

Specifications of VX2110-01T-3CR1

• Brand/series: VX Series
• Number Of Ports: 2
• Primary Type: Solenoid Valve
• Size, Port: 1⁄8" NPTF
• Voltage, Coil: 110 VAC
• Enclosure: Equivalent to IP65

Solenoid Valve Flow Characteristics
32
2.2 Effective area
(1) Conformed standard
(2) Definition of flow characteristics
(3) Formula for flow rate
(4) Test method
Effective area
JIS B 8390: 2000: Pneumatic fluid power—Components using compressible fluids—
Determination of flow rate characteristics
Equipment standards: JIS B 8373: 2 port solenoid valve for pneumatics
When
P
———— 0.5, choked flow
P
Q
When
P
———— > 0.5, subsonic flow
P
Q
Conversion with sonic conductance
S
Q
S
P
P
t
Note) Formula for subsonic flow (4) is only applicable when the critical pressure ratio
Attach a test equipment with the test circuit shown in Fig. (2) in order to discharge air into the atmosphere until the pressure
inside the air tank goes down to 0.25 MPa (0.2 MPa) from an air tank filled with the compressed air at a certain pressure level
(0.5 MPa) which does not go below 0.6 MPa. At this time, measure the discharging time and the residual pressure inside the air
tank which had been left until it turned to be the normal values to determine the effective area
volume of an air tank should be selected within the specified range by corresponding to the effective area of an equipment for
test. In the case of JIS B 8373, 8374, 8375, 8379, 8381, the pressure values are in parentheses and the coefficient of the
formula is 12.9.
S =
S
V
t
Ps
P
T
2
1
2
1
1
2
= 5.0 x
= 120 x
= 240 x
+ 0.1
+ 0.1
+ 0.1
+ 0.1
: Air flow rate[dm
: Effective area [mm
: Upstream pressure [MPa]
: Downstream pressure [MPa]
: Temperature [C]
: Effective area [mm
: Air tank capacity [dm
: Discharging time [s]
: Pressure inside air tank
: Residual pressure inside air tank
: Temperature inside air tank
12.1
before discharging [MPa]
after discharging [MPa]
before discharging [K]
(2) by the sonic conductance
C
—
V
t
S
S
·······································································································(5)
(
log
P
S
(
1
: The cross-sectional area having an ideal throttle without friction deduced from the calculation of the pressure
P
10
+ 0.1)
changes inside an air tank or without reduced flow when discharging the compressed air in a choked flow, from
an equipment attached to the air tank. This is the same concept representing the “easy to run through” as sonic
conductance
2
S
(—————) ——
+ 0.1) (
3
/min(ANR)], dm
Ps
P
2
2
]
+ 0.1
]
+ 0.1
————··································································(3)
273 +
3
P
JIS B 8374: 3 port solenoid valve for pneumatics
JIS B 8375: 4 port, 5 port solenoid valve for pneumatics
JIS B 8379: Silencer for pneumatics
JIS B 8381: Fittings of flexible joint for pneumatics
]
293
1
–
C
P
t
.
2
)
293
C
T
C
3
, it is the same formula as when
:
(cubic decimeter) of SI unit are also allowed to be described by
————··············································(4)
273 +
·················
293
t
(6)
supply
Air
Pressure control
Filter
equipment
b
Fig. (2) Test circuit based on JIS B 8390
= 0.5.
Thermometer
Shut off
valve
Air tank
Timer (Clock)
Pressure recorder
b
is the unknown equipment. In the formula
Pressure switch
Pressure gauge
Pressure gauge
Pressure gauge
or pressure
or pressure
or pressure
convertor
convertor
convertor
S
Control
, using the following formula. The
circuit
l
(liter) 1 dm
3
Equipment for test
= 1
Solenoid valve
l
Power
supply