VX2110-01T-3CR1 SMC Corporation, VX2110-01T-3CR1 Datasheet - Page 33

• 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

1. Indication of flow characteristics
2. Pneumatic equipment
30
Table (1) Indication of Flow Characteristics
The flow characteristics in equipment such as a solenoid valve, etc. are indicated in their specifications as shown in Table (1).
2.1 Indication according to the international standards
(1) Conformed standard
(2) Definition of flow characteristics
(3) Formula for flow rate
Corresponding
Q
Q
Process fluid
The flow characteristics are indicated as a result of a comparison between sonic conductance
Sonic conductance
Critical pressure ratio
Choked flow
Subsonic flow
Standard condition
It is described by the practical units as following.
When
P
————
P
Q
When
P
———— >
P
ISO 6358: 1989 : Pneumatic fluid power—Components using compressible fluids—
JIS B 8390: 2000 : Pneumatic fluid power—Components using compressible fluids—
equipment
Pneumatic
equipment
equipment
2
1
2
1
: Air flow rate [dm
= 600 x
= 600 x
+ 0.1
+ 0.1
+ 0.1
+ 0.1
control
b
C
C
b
, choked flow
(
, subsonic flow
(
P
P
Solenoid Valve Flow Characteristics
(How to indicate flow characteristics)
1
1
+ 0.1)
+ 0.1)
C
3
/min (ANR)], dm
international standard
b
Determination of flow-rate characteristics
How to test flow-rate characteristics
: Value which divides the passing mass flow rate of an equipment in a choked flow condition by the
: Pressure ratio (downstream pressure/upstream pressure) which will turn to a choked flow when the
: The flow in which the upstream pressure is higher than the downstream pressure and where
: Flow greater than the critical pressure ratio
: Air in a temperature state of 20C, absolute pressure 0.1 MPa (= 100 kPa = 1 bar), relative humidity
product of the upstream absolute pressure and the density in a standard condition.
value is smaller than this ratio.
sonic speed in a certain part of an equipment is reached.
Gaseous mass flow rate is in proportion to the upstream pressure and not dependent on the
downstream pressure.
65%.
It is stipulated by adding the “(ANR)” after the unit depicting air volume.
(standard reference atmosphere)
Conformed standard: ISO 8778: 1990 Pneumatic fluid power—Standard reference
atmosphere, JIS B 8393: 2000: Pneumatic fluid power—Standard reference atmosphere
———— ·····························································(1)
1 – ——————
Indication by
273 +
293
———— –
P
P
C
Av
2
1
t
—
—
1 –
,
+ 0.1
+ 0.1
b
3
b
(Cubic decimeter) of SI unit are also allowed to be described by
b
2
———— ···························· (2)
273 +
indications
293
Other
Cv
Cv
t
—
—
S
ISO 6358: 1989
JIS B 8390: 2000
JIS B 8390: 2000
Equipment: JIS B 8373, 8374, 8375, 8379, 8381
ANSI/(NFPA)T3.21.3: 1990
IEC60534-2-3: 1997
JIS B 2005: 1995
Equipment: JIS B 8471, 8472, 8473
Conformed standard
C
and critical pressure ratio
l
(liter). 1 dm
3
= 1
l
b
.