### The Multivariable Air Flow Meter AIRcube

```No. SS2-MVC200-0100 (Rev.1)
The Multivariable Air Flow Meter AIRcube
Model MVC10A / MVC10F
OVERVIEW
The Multivariable Mass Flow Meter AIRcube, a
compact flow meter has all function necessary to
measure nitrogen (N2) gas and air. The model
MVC10A/MVC10F can accurately measure
differential pressure, static pressure, and process
temperature to dynamically calculate fully
compensated mass flow of factory compressed
air, and N2 gas in food and beverage for antioxidation.
The model MVC10A/MVC10F is very useful to
save energy with indicating cost of air and N2
and leak-check function.
FEATURES
High accuracy
A state-of-the-art Dual Sensor realizes accurate
measurement of mass flow rate by measuring Differential
Pressure (DP), Gauge Pressure (GP), and Temperature (T)
for the density compensation.
APPLICATIONS
Full display function
Model MVC10A/MVC10F can display volume flow and
mass flow, and velocity or pressure.
• Measuring air flow each manufacturing process
• Promoting economized energy to grasp actual
consumption of air each factory and shop
• Observing capacity of equipment
• Measuring flow of N2 gas
Stable measurement
• The streamline shaped flow tube (etube) can minimize
the scaling and the clogging.
• Output is with excellent reproducibility due to smooth
and stable streamline by elliptic tube. The rangeability
of flow rate is as wide as 1 to 30, so measurement is
possible down to almost zero flow rate.
• Even with a short upstream length, it provides high
accuracy.
PRINCIPLE
The AIRcube is a differential pressure flow meter based
on the Bernoulli theorem.
Flow (Q) is calculated by the following equation.
Q = A ( ∆P ) ⁄ ρ
Unique functions
( P1 + 101.325 )
273.15
ρ = ------------------------------------- × ----------------------------------
• Cost indication
To save energy management, it has cost indication.
• Auto ranging function
The measuring range can automatically set with
memorizing maximum flow even if the actual flow rate
is unknown.
• Leak check function
Measuring pressure in pipe with built-in pressure sensor,
indicate leak rate necessary to economize energy.
Specifications are subject to change without notice.
101.325
( 273.15 + T1 )
ρ : Actual differential pressure
∆P
P1
T1
A
-1-
:
:
:
:
Density of air
Primary pressure
Temperature
Flow coefficient
First issue: Oct. 2004
Rev.1: Oct. 2004
No. SS2-MVC200-0100 (Rev.1)
Yamatake Corporation
Detector specifications
Symbol
P.Loss
Q
Qmax
SP
Unit
Explain
[kPa] Pressure loss of flow
[Nm³/h] Flow value
[Nm³/h] Maximum flow value
[kPa G] Process pressure (static pressure)
Install position: Horizontal or vertical
Size: 50, 65, 80, 100, 150 mm
Wetted material: SCS13
Measuring fluid: Compressed air, N2
Fluid pressure
0.05 to 0.98 MPaG (Remote type: 0.05 to 0.9 MPaG)
Ambient temperature limit: -15 to 50°C
Fluid temperature limit: -15 to 70°C
Mounting: Integral type or remote type
Converter specifications
Measuring flow range
Maximum flow value [Nm³/h]
Pressure
[MPaG]
0.98
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.05
Pressure
[MPaG]
0.98
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.05
Material
Wetted material:
Detector:
Detector cover:
Case:
Cover:
Bolts and nuts materials:
Tube for remote type:
Tube fitting:
Size
50 mm
1400
1300
1200
1200
1100
1000
900
750
550
350
250
65 mm
2300
2200
2100
2000
1800
1700
1500
1300
950
650
450
80 mm
3200
3100
2900
2700
2500
2300
2000
1700
1300
900
650
100 mm
5500
5000
5000
4500
4000
4000
3500
3000
2300
1500
1000
150 mm
12000
11500
10500
10000
9000
8500
7500
6500
4500
3000
2000
Note) *: One tube of 10 m is attached.
Manufacturer: PISCO Co. Ltd.
Tube: NA0640-20R (the outside diameter: 6 mm,
the inside diameter: 4 mm)
Converter case fitting (only Aluminum case):
Based acrylic paint
Minimum flow value [Nm³/h]
Power supply: 90 to 250V AC
Size
50 mm
40
40
35
35
30
30
25
25
20
20
15
65 mm
65
65
60
60
55
50
45
40
35
30
25
80 mm
90
85
80
75
70
65
60
55
45
40
35
100 mm
150
150
140
130
120
110
100
90
80
65
55
Power: 5 W (maximum)
150 mm
330
310
300
280
260
240
220
200
170
140
120
Output signal
Analog output:
Pulse output:
Pulse width:
4 to 20 mA DC
Open collector output
1 or 10 ms (Automatically selected
according to the pulse weight.)
Pulse frequency: 0.005 to 500 Hz
Supply voltage: 10 to 30V DC
Max current:
50 mA
Display
Main display:
8 digits
Sub display:
16 digit, 2 lines
Display contents: Simultaneously display % flow rate,
flow rate, totalized flow, flow velocity,
pressure, cost, totalized cost, various set
up parameters
Main/Sub display selection:
Max. 2 contents are available in display
contents
Performance
Reference accuracy
For the flow one tenth of maximum flow limit or more:
For the flow less than maximum flow limit of one tenth:
Qat1/10: 1/10 flow of maximum flow
Q: measuring flow
Display unit: Volume flow: m³
Mass flow:
Cost:
Velocity:
Pressure:
Time:
Temperature effect
Permanent pressure loss
More than 0.3 MPa of static pressure
Q
P.Loss = 50 ×  ---------------
Qmax
SUS316
SCS13
SCS13
Aluminum alloy
Polycarbonate
SUS304
Nylon (maximum 5 m)*
Brass + POM
kg, t
,\$
m/s
MPa
d, h, min, s
Damping: Adjustable between 0 and 128 seconds
2
Low flow cutoff
Less than 0.3 MPa of static pressure
Q
Qmax
P.Loss = 0.5 × ( 238 × SP + 23 ) ×  ---------------
Adjustable between 0 and 20% of setting range
2
Power failure
An EEPROM retains data record of totalized flow and
various set up parameters.
-2-
Yamatake Corporation
No. SS2-MVC200-0100 (Rev.1)
Installation specifications
Pressure limits: 0.05 to 0.98 MPaG (remote type: 0.05 to 0.9 MPaG)
Ambient temperature limit: -15 to 50°C
Ambient humidity limit: 5 to 95% RH
Electrical conduit: G1/2 (3 ports)
Installation: Detector/Converter integral type, Wall mounting, 2-inch pipe mounting
Grounding:
The most effective grounding method is direct connection to earth ground with minimal impedance. Grounding resistance
lower than 100 Ω.
Weight: 9 kg (50 mm), 11 kg (65 mm), 13 kg (80 mm), 18.5 kg (100 mm), 39.5 kg (150 mm)
Straight pipe lengths: The minimum straight pipe length
Downstream
side L2
Upstream side L1
f 3D
L1
L1
L2
One 90° bend
L2
L2
L1
1.5
Multivariable mass
flow meter
D
L2
L1
Two or more 90°
Two or more 90°
bends on a single bends not lying on a
plane
single plane
0.5
Multivariable mass
flow meter
f 0.75D
Multivariable mass
flow meter
3.5 D
L1
L2
L1
Reducer
Expansion pipe
Sluice valve
(fully open)
2.5
1.5
2.5
4.0
L2
All the joints
shown to the left
Multivariable mass
flow meter
Multivariable mass Multivariable mass
flow meter
flow meter
0.6
Function
Totalized function
Counting by one count according to the display flow unit setting.
Auto ranging function
After turning on the power or the peak value is reset, the AIRcube automatically sets the measuring range at 80% of the
maximum flow rate.
Leak check function
Calculate the leak rate by measuring line pressure with a built in pressure sensor.
Normal operation
Setting pressure of compressor
Pressure
Pipe and valve shut.
100%
Compressor stopped.
80%
70%
t1
Compressor start.
Flow rate =
t1
(t1 + t2)
-3-
100
t2
Time
No. SS2-MVC200-0100 (Rev.1)
Yamatake Corporation
MODEL SELECTIONS
The Multivariable Air Flow Meter AIRcube
Integral type
Basic model no.
MVC10A
Line size
Selections
MVC10F
Remote type
-
-
Options
-
-
-
-
50 mm
050
65 mm
065
80 mm
080
100 mm
100
150 mm
150
Customer code
Standard
STD
Power supply
Standard (90 to 250V AC)
Process connection
Flange JIS 10K
Installation / flow
direction
Horizontal piping / left to right
HL
Horizontal piping / right to left
HR
Vertical piping / upward to downward
VH
Vertical piping / downward to upward
VL
A
J1
Face to face dimension Standard
Calibration
S
Standard (AIR)
1
Standard (N2)
2
Finish paint
Std. corrosion-proof finish
X
Options
No option
X
Test report
A
Set the tag number
C
Electrical wiring
Side view
Terminal board
Terminal connection
(Screw size: M2.6)
External ground
(Screw size: M4)
Internal ground
Terminal connection
-4-
Marking Description
N L
Power supply
G
Ground
P+ COM Pulse output
|+ |Analog output
R+
(unused)
Yamatake Corporation
No. SS2-MVC200-0100 (Rev.1)
DIMENSIONS
Model MVC10A horizontal installation
[Unit: mm]
Model MVC10A vertical installation
Dimensions and weight
Materials
Flange size 50 mm 65 mm 80 mm 100 mm 150 mm
Key no.
Part name
Material
A
228
238
243
255
290
1
Case
B
259
285
290
318
385
2
Case lid
Polycarbonate
C
70
104
108
154
205
3
Cover flange
SCS 13
D
335
350
365
395
460
4
Screen sheet
Polyethylene
E
222
227
238
254
284
5
Flow tube
SCS 13
L
200
250
250
300
350
Flange
Weight
According to JIS standards
9 kg
11 kg
13 kg
18.5 kg
39.5 kg
-5-
No. SS2-MVC200-0100 (Rev.1)
Yamatake Corporation
Model MVC10F
[Unit: mm]
on cover flange
Joint connection Rc1/4
Joint connection Rc1/4
2-inch pipe
Materials
Key no.
Part name
Material
1
Case
2
Case lid
Polycarbonate
3
Cover flange
SCS 13
4
Screen sheet
Polyethylene
5
Bolt / Nut
SUS304
6
Bracket
SPCC
7
Bolt
SUS304
8
Vent / Drain plug
SUS316
9
U bolt / Nut
SUS304
10
Tube / Tube fitting
Nylon / Brass + POM
-6-
Yamatake Corporation
No. SS2-MVC200-0100 (Rev.1)
Installation Precautions
Obey following precautions to prevent accidents, and for
product to function to its best ability. Be sure to read user's
manual before use of product.
Cautions During and After Installation

CAUTION
• For vertical installation, be sure to adjust zero output at
working pressure.

CAUTION
• Do not step on product. May break and cause injuries.
• Do not tap window with hard tools. Glass may break
and cause injuries.
• During installation, always hold product with
sufficient footing and use safety shoes. Product is
heavy in weight and may cause injuries when dropped.

WARNING
• Be sure that no pressure remains within piping when
removing product from piping.
• Be careful of burns when process temperature is high.
Product temperature will rise with process and remain
so for some time.
Cautions Concerning Ambient Conditions
• Use product where there is no sudden change in ambient
temperature. May cause output errors. Gradual changes
should also be avoided as much as possible.
• If possible, keep product out of direct sunlight. Plastic
material of case lid may be damaged.
• Keep product out of direct rain and wind.
• Do not use product in corrosive gas surroundings.
• Avoid pipe vibrations as much as possible. (Vibrations to
be below 5m/S²)
• Cut off power supply to product when welding nearby
piping. May cause damages according to method of
grounding. Welding instruments should be grounded
directly.
Cautions Concerning Electrical Wiring

CAUTION
• Carefully confirm wiring terminals and connect
accordingly. Incorrect wiring may cause irreparable
damages to product.
• Be sure to supply correct power according to product's
specification. Incorrect power supply may cause
irreparable damages to product.

WARNING
• When wiring, be sure to turn off power before opening
lid. May cause electric shock.
• Do not conduct wiring when lines are alive. May cause
electric shock.
-7-