VXD2140-04T-3CR1 SMC Corporation, VXD2140-04T-3CR1 Datasheet - Page 2

• Manufacturer Part Number: VXD2140-04T-3CR1
• Description: Process Solenoid Valve, 2 port, pilot operated, 1/2 port, NC, 110VAC, conduit
• Manufacturer: SMC Corporation
• Type: Pilot Operatedr

Specifications of VXD2140-04T-3CR1

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

(4) Test method
C
b
P
P
t
Note) Formula of subsonic flow is the elliptic analogous curve.
Flow characteristics curve is indicated in the Graph (1) For details, please use SMC’s “Energy Saving Program”.
Example)
Obtain the air flow rate for
C
According to formula 1, the maximum flow rate
Pressure ratio
Based on the Graph (1), it is going to be 0.7 if it is read by the pressure ratio as 0.8 and the flow ratio to be
Hence, flow rate = Max. flow x flow ratio = 600 x 0.7 = 420 [dm
By attaching a test equipment with the test circuit indicated in Fig. (1) while maintaining to a certain amount which does not let
the upstream pressure go down below 0.3 MPa, measure the maximum flow to be saturated in the first place. Next, measure this
flow rate at 80%, 60%, 40%, 20% and the upstream and downstream pressure. And then, obtain the sonic conductance
this maximum flow rate. Besides that, substitute each data of others for the formula of subsonic flow in order to find
obtain the critical pressure ratio
1
2
= 2 [dm
: Sonic conductance [dm
: Critical pressure ratio [—]
: Upstream pressure [MPa]
: Downstream pressure [MPa]
: Temperature [°C]
Air supply
3
/(s·bar)] and
= ————— =
0.3 + 0.1
0.4 + 0.1
Filter
Pressure control
b
equipment
= 0.3.
P
1
3
Fig. (1) Test circuit based on ISO 6358, JIS B 8390
= 0.4 [MPa],
/(s·bar)]
b
0.8
from that average.
Shut off
valve
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Graph (1) Flow characteristics line
1
0
ød
Solenoid Valves Flow Characteristics
P
0
3
2
≥ 3d
Pressure ratio (
= 0.3 [MPa],
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
=
Pipe for measuring
P
1
6
b
temperature
00 x 2 x (0.4 + 0.1) x
1
= 0.1
≥ 10d
Thermometer
Equipment
0.2
Pipe for measuring
3
C
pressure in the
upstream side
t
,
3d
Pressure gauge or
pressure convertor
= 20 [°C] when a solenoid valve is performed in
0.3
b
P
3
3
/min (ANR)]
10d
2
+ 0.1) / (
0.4
1
P
Equipment
Q
for test
2
3d
Differential pressure gauge or
differential pressure converter
1
————— = 600 [dm
P
Pipe for measuring
downstream side
273 + 20
10d
pressure in the
1
293
+ 0.1)
2
0.5
Flow control valve
3d
0.6
2
Flow meter
3
/min (ANR)]
b
= 0.3.
Front matter 2
b
C
, then
from