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Leading to services, And there is, out of a new,
The best from XUNYI |
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LWGQ gas turbine flowmeter |
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1. Introduction
Integrated temperature sensor, pressure sensor, flow sensor and intelligent flow accumulator, the self-developed gas turbine flow meter of LWQ series, which assimilates the advanced technology of flow meters from home and abroad with optimum design, is a new generation of gas flow meter with high precision and reliability based on the theory of pneumatics, hydromechanics, electromagnetics etc. It has excellent performance under both low and high pressure, variety ways of signal output and low sensitivity to the fluid turbulence. Thus it is widely applied to the measurement of gas flow, such as natural gas, coal gas, LPG, light hydrocarbon gas and so on.
The product has been certified by General Administration of Quality Inspection for Explosion-Proof Products according to the GB3836.2000 <Electrical Apparatus for Explosive Gas Atmospheres--Part 1: General Requirement>, GB3836.2-2000< Electrical Apparatus for Explosive Gas Atmospheres--Part 2: explosion-proof d> and GB3836.4-2000 < Electrical Apparatus for Explosive Gas Atmospheres--Part 4: Intrinsically Safe Type i>.The ex-marking is ExdONT>BT6(explosion-proof) and/or ExiaONT>CT6(Intrinsically Safe Type). It is suitable for Zone 0(Intrinsically Safe type only), 1, 2 Hazardous (classified) Locations, Dangerous Gases or Vapors Zone: PAN>A, PAN>B, PAN>C and Temperature Classes: T1~T6.
2. Product Features
- n High flow-stabilization and corrosion resistance due to the high quality turbine with aluminum alloy structure
- n The import special bearing of high quality prolongs its life extension.
- n Isolating the Measure Chamber from Ventilation Chamber ensures its safety.
- n The main functions include measuring the temperature, pressure and flow of the gas, tracking and compensating the flow automatically, displaying the cumulative volume flow of gas under STPPb=101.325KPa,Tb=293.15Kand supplying the real-time value of temperature or pressure to check.
- n Wide flow rangeQmax/Qmin0:1, good repeatability, high accuracy (Accuracy Class 1.0), low starting flow (0.5 m3/h)
- n Multi-point intelligent non-linear correction to the instrument coefficient (K).
- n Built-in pressure and temperature sensor brings high security, compact structure and exquisite appearance.
- n The instrument has the function of explosion-proof and protection with its Ex-marking ExdONT>BT6/ExiaONT>CT6 and protection rate IP65.
- n Adopting low-power design, it can work continuously for more than 3 years with one lithium battery (3.2V10AH).
- n The instrument coefficient and the accumulative flow value can be saved for ten years without power.
3Technical parameters
31 Basic parameters
- 311 STP flow range under normal pressure (see List 1)
|
Model |
Diametermm |
Flow Range
m3/h |
Starting Flowm3/h |
Pressure grade
MPa |
mounted form |
LWQ-25 |
25 1" |
0.7-7 |
0.6 |
4.0 |
< |
1.5-15 |
1 |
3-40 |
2 |
LWQ-40 |
40 1.5" |
4-40 |
2.5 |
4.0 |
< |
8-80 |
3 |
LWQ-50 |
50 2" |
10-100
15-150 |
3.5
4 |
4.0 |
< |
LWQ-80 |
80 3" |
15-300 |
4 |
1.6 |
< |
LWQ-100 |
1004" |
20-400 |
5 |
1.6 |
< |
LWQ-150 |
1506" |
50-1000 |
8 |
1.6 |
< |
LWQ-200 |
,
2008" |
100-2000 |
20 |
1.6 |
< |
LWQ-250 |
20010" |
150-3000 |
30 |
1.6 |
< |
LWQ-300 |
30012" |
200-4000 |
40 |
1.6 |
< |
|
Model |
Note |
LWQ |
p> |
p> |
p> |
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Instrument Type |
|
|
|
basic type pulse output |
A |
Current output type |
B |
field display type |
C |
Display output typefield display +current output |
D |
Temperature and Pressure Compensation type |
Instrument
Diameter |
25 |
25mm |
40 |
40 mm |
50 |
50 mm |
80 |
80 mm |
100 |
100 mm |
150 |
150 mm |
200 |
200 mm |
250 |
250 mm |
300 |
300 mm |
Sensor Material |
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Basic material, high quality Aluminum Alloy(Max Pressure Tolerance : 1.0MPa) |
S |
stainless steelHigh pressure Anticorrosion type |
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For example, LWQC50S gas turbine flow meter means high pressure gas turbine flow meter of which diameter is 50mm with the function of field display and current output and its sensor material is stainless steel.
- 313 accuracy class 1.0 or 1.5
- 314 Operation Condition
- Ÿ ambient temperature-30SPAN>+60st1:chmetcnv>
- Ÿ atmospheric pressure86KPa106KPa
- Ÿ medium temperature-30SPAN>+80st1:chmetcnv>
- Ÿ Relative Humidity5%95%
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Model |
Display & output |
power supply |
LWQ |
Voltage Pulse, low levelV, high levelV,3-wire |
DC12V-24V |
LWQA |
Current output: 420mADC2-wire |
DC24V |
LWQB |
Multi-point non-linear correction, two rows LCD indication of instantaneous flow and accumulative flow, such as:
Q XXXX 4 bit instantaneous flow valuem3/h
XXXXXXXX 8 bit accumulative flow valuem3
PS: The accumulative flow value that can be cleared counts from 00.00000 to the maximum of 999999.99 automatically. The instrument coefficient and accumulative flow value can be saved for ten years without power |
3.2V10AH lithium battery |
LWQC |
LWQ-B (Field display type) with the addition of 420mADC current output |
DC24V |
LWQD |
LWQ-B (Field display type) with the addition of temperature and pressure sensor
Automatic compensation for different operation condition;
Temperature, pressure, and battery power etc. being inquired through the switch of magnet
High frequency and low frequency voltage pulse signal output and 4-20mADC 2-wire current signal output. |
3.2V10AH lithium battery |
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