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Gas turbine flowmeter -3321 type
Introduction: The 3321 gas turbine flowmeter is a precision flow measurement instrument that can be used to measure the volume flow rate or mass flow
Product details
Principle structure
The 3321 gas turbine flowmeter is a precision flow measurement instrument that can be used in conjunction with the 7100 series flow integrator developed by our factory to measure the volumetric or mass flow rate of gases. Gas metering and control systems for general gases, natural gas, coal gas, and other gases that can be widely used in fields such as petroleum, chemical, metallurgical, and scientific research.
The gas turbine flowmeter can also be connected to secondary instruments or controllers in the control room to achieve integration, transmission, and control functions. .
Product Features
Low pressure drop, with a maximum pressure loss of approximately 1Kpa
High measurement accuracy up to 1%, special calibration up to 0.5%
Low flow rate can be used in low flow rate situations of 1.5m/s
Compensation includes temperature and pressure compensation
Lubrication adopts German GRW self-lubricating bearings or external lubrication system
Integrated header with RS 485 communication capability
Integrated header with upper and lower limit alarm and equivalent output functions
Conversion of gas operating flow rate and standard flow rate
Gas equation: Pv=naRT
P is pressure, V is volume, n is a physical quantity, R is a constant, and T is absolute temperature
The output of the ideal gas state when the units of p, V, n, and T are Pa (pascal), m3 (cubic meter), mol, and R, respectively, is 8.31
For example, the voltage stabilization compensation during measurement is actually a conversion, directly converting the operating flow rate into standard cubic (20 ℃, 101.325Kpa) flow rate.
For example, if the operating temperature is 32 degrees, the operating pressure is 0.6MPa, and the operating flow rate is 100m3/h, the calculated standard flow rate is:
Standard flow rate=operating condition flow rate x (operating condition pressure absolute x operating condition temperature absolute) ÷ (operating condition pressure absolute x operating condition temperature absolute)
Q standard=100 × (701325 × 273) ÷ (101325 × 305)=619.5345m3/h
technical performance
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Specifications
model |
Flow range (m3/h)
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fluid temperature
(℃) |
ambient temperature
(℃) |
relative temperature
(℃) |
Nominal Pressure
(MPa) |
Maximum pressure loss
(KPa) |
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Basic error limit
±1%* |
Basic error limit
±1.5% |
Basic error limit
±2.5% |
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3321-15
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|
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1.5~7.5
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-20~+60
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-20~+50
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≦95%
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6.4
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1
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3321-25
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6~42
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3321-40
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8.4~84
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8.4~160
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6.5~200
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1
1.6 2.5 |
1
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3321-50
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16.8~168
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16.8~336
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11~336
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1
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3321-80
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34~340
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34~680
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34~1000
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1
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3321-100
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51~510
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51~1020
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51~1850
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1
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3321-150
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98~980
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98~1960
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130~3000
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1
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3321-200
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170~1700
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170~2550
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140~4000
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1
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3321-250
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200~2000
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200~3450
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200~6000
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1
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3321-300
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400~4000
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400~6000
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250~7500
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1
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Selection code
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |||||||||
| 3321- | - | - | - | - | - | - | - | - |
| external structure | |||||||||||||||||
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15
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15mm (pipe thread G1 ") | ||||||||||||||||
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25
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25mm (pipe thread G1-1/4 ") | ||||||||||||||||
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40
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40mm (flange type) | ||||||||||||||||
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50
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50mm (flange type) | ||||||||||||||||
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80
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80mm (flange type) | ||||||||||||||||
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100
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100mm (flange type) | ||||||||||||||||
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150
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150mm (flange type) | ||||||||||||||||
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200
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200mm (flange type) | ||||||||||||||||
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250
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250mm (flange type) | ||||||||||||||||
| 1 |
300
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300mm (flange type) | |||||||||||||||
| output signal | |||||||||||||||||
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P
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pulse output | ||||||||||||||||
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T
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On site LCD display | ||||||||||||||||
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M
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On site display with current output (2-wire system) | ||||||||||||||||
| 2 |
J
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Supporting flow integrator | |||||||||||||||
| compensation method | |||||||||||||||||
|
S
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Temperature, pressure setting, fixed compensation | ||||||||||||||||
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T
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Temperature sensor, pressure fixed compensation | ||||||||||||||||
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P
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Pressure sensor, temperature fixed compensation | ||||||||||||||||
| 3 |
A
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Automatic temperature and pressure compensation | |||||||||||||||
| measurement accuracy | |||||||||||||||||
|
A
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Accuracy (Accuracy) 2.5% | ||||||||||||||||
|
B
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Accuracy (Accuracy) 1.5% | ||||||||||||||||
| 4 |
C
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Accuracy (Accurac) 1% | |||||||||||||||
| Nominal Pressure | |||||||||||||||||
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C1
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PN1.0MPa | ||||||||||||||||
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C2
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PN1.6MPa | ||||||||||||||||
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C3
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PN2.5Mpa | ||||||||||||||||
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C4
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PN6.4Mpa | ||||||||||||||||
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C5
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PN15Mpa | ||||||||||||||||
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C6
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PN25Mpa | ||||||||||||||||
| 5 |
C7
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PN40Mpa | |||||||||||||||
| flow direction | |||||||||||||||||
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1
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From left to right | ||||||||||||||||
| 6 |
2
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From right to left | |||||||||||||||
| fueling system | |||||||||||||||||
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Y
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Without refueling system | ||||||||||||||||
| 7 |
N
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Equipped with refueling system (DN40 caliber and above caliber have this function) | |||||||||||||||
| special option | |||||||||||||||||
|
1
|
mass flow rate | ||||||||||||||||
| 8 |
2
|
volumetric flow rate | |||||||||||||||
Note: 1. The flange connection size shall be in accordance with JB/T 81-1994 or JB/T 79-1994.
2. Those with * are special orders
3. The appearance and connection dimensions are the same as those of the "3320 Liquid Turbine Flow Sensor"
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