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| FFM 63 intelligentized vortex flowmeter is a stress
mode vortext flowmeter developed in the principle of Karman vortex
street. The flowmeter is characterized by large SNR (signal-noise
ratio), high sensitivity and strong vibration resistance. The signal
circuit adopts the SCM technology to process data. CPU, storage
unit, display unit, communication unit and other function modules
are sealed inside the amplifying circuit. The flowmeter is of RS485
communication function, quite stable zero and precision, with the
caliber ranging from DN25 to DN300. The flowmeter is widely applied
to measuring the volume, flow and weight of superheated steam, saturated
steam, compressed air, common air and liquid. |
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Technical advantages of FFM63 intelligentized
vortex flowmeter：
The advanced NC equipment is used for machining the surface and
vortex generator of the sensor to ensure the processing precision
and make the parts serve more general purposes. In this way the
repeatability and precision of the sensor won’t be affected in the
event of the replacement of parts. In addition, the powerful and
stable vortex signal can be generated.
The radiator of the vortext shedding flowmeter is laid horizontally.
In contrast to the flowmeter with the vertically laid radiator,
the flowmeter will transmit the least heat to the amplifying area.
Besides, the radiation area is large and heat is transferred faster,
which can contribute to the higher reliability and longer service
life of the sensor.
Through the long-term analyses of the waveform and frequency spectrum
of the vortex flowmeter, the company has designed the optimal probe,
wall thickness, height, the diameter of the probe rod and the corresponding
piezoelectric crystal. The advanced NC lathe is used for processing
to ensure the precision in terms of co-axiality and smoothness.
In addition, the special processing treatment frees the vortex flowmeter
from the general problem that the self-oscillation frequency of
the flowmeter will affect the signal. This is exactly a unqiue technical
advantage Floworld enjoys in manufacturing vortex flowmeter. |
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Main technical parameters of FFM63 intelligentized
vortex flowmeter：
Fluids to be tested: common gases such as saturated steam, superheated
steam and compressed air; as well as common liquids
Grade: liquid (1.0); gas (1.5)
Repeatability: liquid (0.33%); gas (0.5%)
Measurement range: gas (7m/s～40m/s); liquid (0.7m/s～7m/s)
Rated pressure: 1.6MPa、2.5MPa、4.0MPa；
Fluid temperature: -40℃～250℃（ordinary），100℃～350℃（high-temperature）；
Surface material:
304 stainless steel；
Power: 24VDC（or 12VDC），lithium cell；
Output signal: pulse signal (low level≤1V; high level≥4V); 4mA～20mA，or
RS485；
Protection
degree: IP65
Electrical interface: M20×1.5
Explosion-proofing form: common non-explosion proof; explosion suppression
(optional)
Ambient environment: -35℃～60℃（without LCD）；-5℃～60℃（with LCD）
Relative humidity:
5～95% |
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Application of FFM63 intelligentized vortex
flowmeter：
Steams, gases and liquids can be measured.
Little damage due to the pressing
No compensation is needed during the measurement on volume and flow.
Within certain
Reynolds number, the flow characteristic is only subject to the
shape and size of the vortex generator instead of the fluid
pressure,
temperature, viscosity, density and element.
The structure is simple and solid, without the component in motion.
Therefore it is highly reliable.
It is easy for installation and maintenance.
The detecting element is not in contact with the medium. It therefore
has stable performance and long service life.
The output is in direct proportion to flow in terms of pulse signal.
There is no zero drift and the precision is high. It is easy to
be hooked to the computer.
The measurement range is wide, with the ratio of range reaching
1:10(1:20) |
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| Selection table for FFM63 intelligentized vortex
flowmeter： |
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Flowmeter variety |
FFM 63 |
|
Installation form |
D |
Clamp sensor |
|
L |
measure liquid flow |
G |
measure gas flow |
S |
measure steam flow |
Nominal diameter |
25 |
25mm |
32 |
32mm |
40 |
40mm |
50 |
50mm |
65 |
65mm |
80 |
80mm |
100 |
100mm |
120 |
120mm |
150 |
150mm |
Power supply |
A |
Bi-power supply (24VDC/12VDC、3.6Vlithium cell) |
D |
3.6 lithium cell |
E |
24VDC/12VDC |
head |
D |
with digital display head |
N |
without digital display head |
Output signal |
N
P |
no output pulse
output |
A |
4—20 output |
R |
R485 output |
Sensor materials |
A |
304 stainless steel |
B |
316L stainless steel |
O |
Others shall be specified
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Liquid temperature |
--E |
-40℃——250℃ |
H |
100℃——350℃ |
Rated pressure |
16 |
1.6MPa |
25 |
2.5MPa |
40 |
4.0MPa |
Protection degree |
---0 |
IP65 |
Explosion-proofing degree |
0 |
non explosion proof |
Ex |
explosion proof |
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