Flow
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Ultrasonic Flow Meter for Gas
Description
MUFM100 Series is Mostek's key technology R&D program, and it's high -value product researched and developed.
This uniquely advanced multiple sensing technique will make more accurate and repeatable for the gas measuring in the industrial process.
It can be extensively applied to the supply, transmission, distribution of most dry gas in fields such as underground air storage, power station, petrochemical industry, aluminum melters etc.
A wide range of gas can be measured by MUGF100 including natural gas, compact gas, air, fuel gas, corrosive gas, poisonous gas, high pure gas etc.
Principle
Ultrasonic gas flow meter is based on the theory of acoustic transit time to calculate the average gas move velocity by measuring up-stream and down-stream time, in which the ultrasonics waves generated by a pair of by-directional transducers assembled with a angle respect to axis.
(1) Flow velocity is calculated by : 
(2) Sound velocity is : 
(3) Flow Volume is : 
Where : v : Gas Velocity m/s
C : Sound Velocity m/s
Q : Volume of flowing medium m³/h
D: Diameter of pipe (m)
θ : Angle of path to the flow (°)
t1, t2 : Upstream and downstream transist time (s)
T1, T2 : Upstream and downstream sound delay by circuit , cable and transducer (s)
Feature and Application
- High Accuracy : ± 0.5%, Repeatability : ± 0.2%
- Sensor Type : Multiple Ultrasonic Sensor
- Fluid Measuring Velocity : 1.04 ~ 26 m/s
- Operating Temperature : -25°C ~ + 55°C
- Operating Pressure : Max 2.5 mPa
- Measurement : Gas, Air
- No Moving Parts
- Low Pressure Drop
- Bi-Directional Measurement
- Simple Installation , Easy Maintennance
- Ex-Proof : Ex d (ib) IIB T4 ( Exclude Acethlyne )
- Temperature and Pressure Compensation
- Suitable for Small Flow Rate and Large Size Pipe
- output : 4~20 mA , RS485
Technical Specification
- Accuracy : ± 0.5%, ± 1.0% ± 1.5%
- Communication Protocol : ModBus
- Output Signal : Pulse, 4~20 mA, RS485
- Working Temperature : -25°C ~ + 55°C
- Ambient Temperature : -40°C ~ + 70°C
- Working Pressure : 0.6 to 2.5 Mpa
- Humidity : ≤ 80% ( 25 °C)
- Power Supply : 24 VDC ( 600 mA )
- Flow range : As flowing table 1~3
Nominal Flow Range
| table 1 | table 2 | table 3 | |||
|---|---|---|---|---|---|
| Size (mm) | Flow range @ ± 0.5%(m³/h) | Size (mm) | Flow range @ ± 1.0%(m³/h) | Size (mm) | Flow range @ ± 1.5%(m³/h) |
| Velocity (1.6~24 ) m/s | Velocity (1.2~26 ) m/s | Velocity (1.04~26 ) m/s | |||
| 25 | 2.83~42.42 | 25 | 2.3~45.9 | 25 | 1.84~45.9 |
| 40 | 7.25~108.6 | 40 | 5.9~117.6 | 40 | 4.70~117.6 |
| 50 | 11.3~169.7 | 50 | 9.2~183.8 | 50 | 7.35~183.8 |
| 80 | 28.9~434.3 | 80 | 23.5~470.5 | 80 | 18.82~470.5 |
| 100 | 45.23~678.5 | 100 | 36.7~735.1 | 100 | 29.41~735.1 |
| 150 | 101.8~1526.8 | 150 | 82.7~1654.0 | 150 | 66.16~1654 |
| 200 | 180.9~2713.8 | 200 | 147.0~2940.5 | 200 | 117.6~2940.5 |
| 250 | 282.7~4240.5 | 250 | 229.7~4594.6 | 250 | 183.8~4594.6 |
| 300 | 407.1~6106.5 | 300 | 330.8~6361.7 | 300 | 264.6~6361.7 |
첨부파일
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