KXLWQ Gas Turbine Flow meter
Description
The operation of the KXLWQ series Gas Turbine Meter is based on the
measurement of the velocity of gas. The flowing gas is accelerated
and conditioned by the meters straightening section. The
straightening vanes prepare the gas flow profile by removing.
undesired swirl, turbulence and asymmetry before the gas flows to
the turbine wheel. The dynamic forces of the flowing fluid cause
the rotor to rotate.
The turbine wheel is mounted on the main shaft, with special high
precision, low friction ball bearings. The turbine wheel has
helical blades that have a known angle relative to the gas flow.
The conditioned and accelerated gas drives the turbine wheel with
an angular velocity that is proportional with the gas velocity.
KXLWQ series gas turbine flow meter is widely used for measurement
of natural gas, coal gas, liquefied gas and light hydrocarbon gas,
etc.
Features
Dedicated instrument for gas measurement
Dedicated instrument for oil & gas recycle system
High accuracy: ±1.5%, ±1.0% or ±0.75%
Good repetitiveness
Test temperature, pressure and flow of measured gas; automatic
tracking and compensation of flow; indication of gas total volume
under standard status; real-time query of temperature, pressure,
time and date, etc.
Built-in pressure & temperature sensor, high safety performance,
compact structure & beautiful outlook
Low power consumption, more than 3 years service life for one 3V
10AH lithium cell
Instrument factor, total flow value kept for 10 years after power
off
Specifications
| Parameters | Description |
| DN (mm) & Connection | 25, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300 flange connection
25, 40 thread connection |
| Accuracy | ±1.5%, ±1.0% or ±0.75% (need special order) |
| Range ratio | 1:10; 1:20; 1:30 |
| Instrument Material | Body: SS304; Impeller: anti-corrosive ABS or high-quality aluminum alloy; Indicator: cast aluminum |
| Medium Temperature (℃) | -30°C ~+80°C/-86°F~ +176°F |
| Ambient Conditions | Temperature:-20℃~ +60℃ / -68°F ~ +140°F Relative humidity: 5% ~ 90%, Atmospheric pressure: 86 ~ 106 KPa |
| Output Signal | Sensor: pulse frequency signal, low level less than 0.8V, high
level more than 8V Transmitter: two wire 4-20mA DC current signal |
| Power Supply | Sensor: +12V DC, +24V DC (optional) Transmitter: +24V DC Local indication type: built-in 3V lithium cell |
| Signal Transmission Line | STVPV3×0.3 (3 wire), 2×0.3 (2 wire) |
| Transmission Distance | No more than 1000m |
| Signal Line Interface | M20x1.5(F) |
| Explosive-proof Grade | ExdIIBT6 |
| Protection Level | IP65 |
Measuring Range & Working Pressure
| DN (mm) | Model | Standard Span (m3/h) | Extension Span (m3/h) | Pressure (MPa) | Mounting |
| DN25 | KXLWQ-25 | | ------ | W3 | 0.5-4 | 4.0 | Flange (Thread) |
| ------ | W4 | 0.7-7 | 4.0 |
| ------ | W5 | 1.5-15 | 4.0 |
| S1 | 3-30 | W1 | 1.5-30 | 4.0 |
| S2 | 4-40 | W2 | 2-40 | 4.0 |
| DN40 | KXLWQ-40 | S1 | 5-50 | W1 | 2.5-50 | 4.0 | Flange |
| S2 | 8-80 | W2 | 4-80 | 4.0 | (Thread) |
| DN50 | KXLWQ-50 | S1 | 10-100 | W1 | 5-100 | 4.0 | Flange |
| S2 | 15-150 | W2 | 8-150 | 4.0 | Flange |
| DN65 | KXLWQ-65 | S | 15-200 | W | 10-200 | 1.6 | Flange |
| DN80 | KXLWQ-80 | S | 15-300 | W1 | 10-300 | 1.6 | Flange |
| W2 | 15-350 | 1.6 | Flange |
| DN100 | KXLWQ-100 | S | 20-400 | W1 | 15-400 | 1.6 | Flange |
| W2 | 20-500 | 1.6 | Flange |
| DN125 | KXLWQ-125 | S | 20-800 | W1 | 18-800 | 1.6 | Flange |
| W2 | 20-900 | 1.6 | Flange |
| DN150 | KXLWQ-150 | S | 50-1000 | W1 | 25-1000 | 1.6 | Flange |
| W2 | 50-1200 | 1.6 | Flange |
| DN200 | KXLWQ-200 | S | 150-2000 | W | 80-2500 | 1.6 | Flange |
| DN250 | KXLWQ-250 | S | 200-3000 | W | 150-3500 | 1.6 | Flange |
| DN300 | KXLWQ-300 | S | 250-4000 | W | 200-4000 | 1.6 | Flange |
Note 1: “Standard Span” refers to general measuring range
(applicable for KXLWQ-N/A/B/C/D)
Note 2: “Extension Span” only for “smart integral gas turbine flow
meter” or “smart integral gas flow meter with temperature &
pressure compensation (KXLWQ-B/C/D)
Instrument Classification
1.According to function, KXLWQ gas turbine flow meter can be
divided into 3 types:
Gas turbine flow sensor / transmitter
Smart integral gas turbine flow meter
Smart integral gas turbine flow meter with temperature & pressure
compensation
2.Function Description
Gas Turbine Flow Sensor / Transmitter
This type turbine flow meter itself has no local indication
function, only remote output flow signal under working status; low
price, small volume, suitable for using together with secondary
display meter, PLC, DCS, etc.
This type turbine flowmeter is explosion proof type, ExdIIBT6.
According to output signal, this product can be divided to KXLWQ-N
& KXLWQ-A 
| KXLWQ-N | KXLWQ-A |
| Indication | No indication | No indication |
| Signal Output | 3 wire, pulse under working status; high level more than 8V, low
level less than 0.8V | 4-20mA under working status |
| Power Supply | 12 or 24V DC | 24V DC |
| Explosion Proof | ExdIIBT6 | ExdIIBT6 |
Smart Integral Gas Turbine Flow meter
Integral smart meter | Two-line LCD display |
| Compact Structure | Clear reading |
| High Reliability | Not affected by external power |
| Anti-lighting | Low cost |
According to power supply whether with remote signal output, this
type
turbine flow meter can be divided to KXLWQ-B & KXLWQ-C.
| KXLWQ-B | KXLWQ-C |
| Indication | Flow rate & Total flow | Flow rate & Total flow |
| Signal Output | no | 4-20 mA, pulse |
| Power Supply | 3V lithium cell | 24V DC external |
| Explosion Proof | ExdIIBT6 | ExdIIBT6 |
Smart Integral Turbine Flow meter with T&P Compensation
KXLWQ-S type gas turbine flow meter has built-in temperature &
pressure
sensor and smart totalizer.
| Indication | Flow rate, daily accumulative flow, total accumulative flow,
temperature, pressure and battery capacity |
| Signal Output | 4-20mA, pulse, IP card signal RS485 protocol |
| Power Supply | Built-in lithium cell & external 24VDC |
| Explosion Proof | ExdIIBT6 |
Ordering information
Model should be selected according to nominal pressure, medium max
pressure, medium temperature, medium components, flow range and
signal output.
Working flow range should be (20% to 80%) Qmax.
Standard signal output: pulse signal (ws) output 3 wire, standard
flow signal (IC card) output or RS485 communication output; please
specify when ordering.
| Model | Remarks |
| KXLWQ | | | | | | | |
| Type | N | | | | | | Sensor type: +12V or 24V, output 3 wire pulse signal |
| A | | | | | | Transmitter type: +24V, output 2 wire 4-20 mA |
| B | | | | | | Smart type: lithium cell, local indication without output |
| C | | | | | | Smart type: +24V, local indication, output two wire 4-20mA |
| S | | | | | | Smart type: T & P compensation integrated, local indication with
remote signal |
| DN | 25 | | | | | DN 25 mm |
| 40 | | | | | DN 40 mm |
| 50 | | | | | DN 50 mm |
| 65 | | | | | DN 65 mm |
| 80 | | | | | DN 80 mm |
| 100 | | | | | DN 100 mm |
| 125 | | | | | DN 125 mm |
| 150 | | | | | DN 150 mm |
| 200 | | | | | DN 200 mm |
| 250 | | | | | DN 250 mm |
| 300 | | | | | DN 300 mm |
| Range | W(x) | | | | Extension range, see Table 2 |
| S (x) | | | | Standard range, see Table 2 |
| Body Material | S | | | Stainless Steel |
| L | | | Aluminum Alloy |
| T | | | Customized |
| Impeller Material | S | | Anti-corrosive ABS |
| L | | Aluminum Alloy |
| T | | Customized |
| Medium | N | No special structure |
| A | Dedicated for oxygen |
| B | Dedicated for compressed air |
