LWQ series gas turbine flowmeter

LWQ series gas turbine flowmeter
 

Product description:

JC-LWQ series gas turbine flowmeter is a measuring gas flow meter can measure metering natural gas, hydrogen, nitrogen, coal gas, liquefied petroleum gas and other gases, with the corresponding flow totalizer meter split package can be composed of a gas turbine flow . meter JC-LWQ series gas turbine flowmeter is widely used in electricity generation and cogeneration, heating industries; aviation, aerospace, shipbuilding, nuclear power and weapons industries; machinery, mining and automobile manufacturing industries; petroleum, chemical industry; medicine, food and sprinkle tobacco manufacturing industry; metering forestry, agriculture and light industry and other fields.

Brief introduction
I. Overview
JC-LWQ type gas turbine flow sensor is a flow meter at home and abroad to learn advanced technology and optimized design, a combination of gas mechanics, fluid mechanics, electromagnetic theory and self-developed a new generation of high-precision, high reliability, precision measurement gas instruments, with excellent low and high pressure measurement of performance, as well as a variety of signal output of such products on the low sensitivity of turbine flow fluid disturbances, widely used in measurement of natural gas, coal gas, liquefied petroleum gas, light hydrocarbon gas and other gases. itself does not have on-site display, only traffic signal in a manner remote pulse signal output meter low price, high integration, small size, especially for the secondary display device, PLC, DCS and other computer control system used in conjunction. class turbine flowmeters are explosion-proof products, explosion-proof grade: ExdIIBT6.
Second, product characteristics
* High-quality alloy turbine has higher steady flow and corrosion effects
· Imports of high-quality special bearings, long life
· Metering chamber and the breather chamber isolated to ensure the safety of the instrument
· Wide flow range (Qmax / Qmin≥20: 1), good repeatability, high accuracy (up to 1.0), a small pressure loss; low starting flow; can
Up to 0.6m3 / h
· Instruments with explosion-proof and protection; proof mark ExdⅡBT6; ExiaⅡCT6; degree of protection IP65
Third, the instrument classification
1. Press Instrument functional classification LWQ series gas turbine flowmeter can be divided into three categories, namely:
Gas turbine flow sensor / transmitter
Intelligent integration gas turbine flowmeter
Intelligent temperature and pressure compensation integrated gas turbine flowmeter
2. Function Description
• Gas turbine flow sensor / transmitter
Kind of turbine flow product itself does not have on-site display, only traffic signal remote output flow signal can be divided pulse signal or current signal (4-20mA);. Low Meter prices, high integration, small size, especially for and the secondary display device, PLC, DCS and other computer control systems with the use of such turbine flowmeters are explosion-proof products, explosion-proof grade:. ExdIIBT6.
According to different output signals, such products can be divided into JC-LWQ-N- • type and LWQ-A- • Type
JC-LWQ-N- • Type JC-LWQ-A- • Type
display method No site display No site display
Signal output Three-wire pulse output, high ≥8V, low ≤0.8V Condition 4-20mA
Power supply 12 or 24VDC 24VDC
Explosion levels ExdIIBT6 ExdIIBT6
Applications: can be used as working conditions flow signal acquisition instruments, traffic signal remote first bit machine

• intelligent integration gas turbine flowmeter
Integration of smart meters, with double LCD live display, with a compact body, intuitive readings clear, high reliability, without outside power interference, anti-lightning, obvious low cost advantage.
Class turbine flowmeter in accordance with power supply, the availability of remote signal output can be divided into JC-LWQ-B- • type and JC-LWQ-C- • type.
JC-LWQ-B- • Type JC-LWQ-C- • Type
display method Also shows the instantaneous flow work state.
Total cumulative flow
Also shows the instantaneous flow work state.
Total cumulative flow
Signal output no Conditions 4-20mA, pulse condition
Power supply
3V lithium battery
(Applicable to more than four years in a row)
24VDC external power supply
Explosion levels ExdIIBT6 ExdIIBT6

Applications:
1. In the temperature and pressure conditions relatively stable scene, as industrial control instruments

2. In the temperature and pressure conditions relatively stable site, the user can operation to standard conditions based on instrument represents the value of the gas flow equation.


• intelligent temperature and pressure compensation integrated gas turbine flowmeter
LWQ-D type gas turbine meter built-in temperature, pressure sensors and intelligent flow totalizer, through micro-processing unit for real-time acquisition of flow, temperature, pressure signal in accordance with the gas temperature and pressure compensation equation, automatic compression factor correction, and then volume flow under standard conditions intuitive displayed.
※ standard state flow (flow standard conditions): Under 20 ℃, atmospheric pressure gas flow of life
display method Also shows the instantaneous flow rate under standard conditions; daily cumulative flow; total cumulative flow
And temperature; pressure; battery power and other data
Signal output Standard conditions 4-20mA; pulse signal condition; standard conditions pulse signal; IC card signal; RS485 communication protocol
Power supply
Use any built-in lithium and external signal for 24VDC dual power supply, when users do not need
No need for external power supply when the instrument 24VDC output function, the instrument automatically switches to
Built-in lithium battery-powered, the battery power may work for more than three years.
Explosion levels ExdIIBT6

Applications: accurate measurement or trade settlement

Details
First, the technical parameters
1. Basic parameters:
Table 1
Meter diameter (mm) and connections
Accuracy class
Turndown ratio
Meter Materials
Measured medium temperature (℃)
Environmental conditions
output signal
Power supply
Signal transmission lines
Transmission distance
Signal line interface
Explosion levels
Protection class
2540506580100125150200250300 flange connection
2540 can be screwed
± 1.5% R, ± 1% R, ± 0.75% R (special needs)
1: 10: 1: 20: 1: 30
Body: 304 stainless steel; Impeller: ABS or high-quality aluminum alloy corrosion; display: Aluminum
-30℃~+80℃
Temperature: -20 ℃ ~ + 60 ℃; Relative humidity 5% to 90%; Atmospheric pressure 86 ~ 106KPa
Sensor: Pulse frequency signal, low ≤0.8V high ≥8V
Transmitter: two-wire current signal ~ 20mADC
Sensor: + 12VDC, + 24VDC (optional)
Transmitter: + 24VDC
Site display type: the instrument comes with 3V lithium battery
STVPV3 * 0.3 (three-wire), 2 * 0.3 (two-wire)
≤1000m
Internal thread M20 * 1.5
ExdIIBT6
IP65
2. Measuring range and working pressure
Table 2
Nominal diameter
(Mm)
model Standard range
(M3 / h)
Extended Range
(M3 / h)
Pressure Level
(MPa)
Installation
DN25 JC-LWQ-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 JC-LWQ-40 • S1 5-50 W1 2.5-50 4.0 Flange (thread)
S2 8-80 W2 4-80 4.0
DN50 JC-LWQ-50 • S1 10-100 W1 5-100 4.0 Flange
S2 15-150 W2 8-150 4.0 Flange
DN65 JC-LWQ-65 • S 15-200 W 10-200 1.6 Flange
DN80 JC-LWQ-80 • S 15-300 W1 10-300 1.6 Flange
W2 15-350 1.6 Flange
DN100 JC-LWQ-100 • S 20-400 W1 15-400 1.6 Flange
W2 20-500 1.6 Flange
DN125 JC-LWQ-125 • S 20-800 W1 18-800 1.6 Flange
W2 20-900 1.6 Flange
DN150 JC-LWQ-150 • S 50-1000 W1 25-1000 1.6 Flange
W2 50-1200 1.6 Flange
DN200 JC-LWQ-200 • S 150-2000 W 80-2500 1.6 Flange
DN250 JC-LWQ-250 • S 200-3000 W 150-3500 1.6 Flange
DN300 JC-LWQ-300 • S 250-4000 W 200-4000 1.6 Flange
Note 1: Table 2. 'Standard Range' is marked as a universal measuring range measuring range; (that is applicable to: JC-LWQ-N / A / B / C / D)
Note 2: Table 2 'extended range' label was measured in the range of limited use 'intelligent integration gas turbine flowmeter' or 'intelligent temperature and pressure compensation integrated gas turbine flowmeter (that applies to: JC-LWQ-B / C / D)

Second, the instrument selection
1. Selection Help
Users in the selection should be based on the pipe nominal pressure, maximum pressure medium, medium temperature, medium components, flow range and signal output requirements reasonable choice flowmeter model specifications.
To make the best use of the performance of the meter, use the flow meter should be within the range (20% ~ 80%) Qmax range is appropriate.
Signal output meter factory: working conditions pulse signal output (three-wire), the standard flow rate signal (IC card) output or RS-485 communication output if required other output functions, please specify when ordering.
TABLE 3

model

Explanation
JC-LWQ- ―• /• /• /•
meter
Types of
N

Sensor Type: + 12V or 24V power supply, three-wire output pulse signal

A

Transmitter type: + 24V power supply, two-wire 4 ~ 20mA output

B

Smart: lithium battery-powered, live shows no signal output

C

Smart: + 24V power supply, live shows and a two-wire 4 ~ 20mA output

D

All intelligent: temperature and pressure compensation integrated, on-site and remote signal display

Nominal diameter and
Range
25

DN 25mm

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)

Extended range, see table on page 2 Select Px

S (x)

Standard range, see table on page 2 Select Px

Body Material S

stainless steel

L

Aluminum

Movement Material S

ABS anti-corrosion

L

Aluminum

N

No specific structure

A

Oxygen dedicated

B

Compressed air special


Example: use of a stainless steel; temperature and pressure compensation integrated gas turbine flowmeter to measure oxygen; users working conditions measuring range 3-50m3 / h; Model: JC-LWQ-D-40W1 / S / S / A

Third, the installation dimensions
Flowmeter shape as shown, the specific dimensions shown in Table 6

Note: 1 shows the temperature and pressure compensation type instrument outline drawing.
All models of the same caliber instrument sensor the same size portions.
Table 6

Path mm

L

B

K

n

d

Bolt Specifications

Conventional pressure MPa

DN25

170

115

85

4

φ14

M12*50

4.0

DN 40

200

150

110

4

φ18

M16*55

DN 50

220

165

125

4

φ18

M16*60

DN 65

220

185

145

4

φ18

M16*65

1.6

DN 80

240

200

160

8

φ18

M16*70

DN 100

300

220

180

8

φ18

M16*80

DN 125

240

250

210

8

φ18

M16*80

DN 150

450

285

240

8

φ22

M20*80

DN 200

500

340

295

12

φ22

M20*90

DN 250

500

403

355

12

φ26

M24*90

DN 300

500

460

410

12

φ26

M24*100

Fourth, the instrument selection

1. Gas flowmeter Selection Help

Users in the selection should be based on the pipe nominal pressure, maximum pressure medium, medium temperature, medium components, flow range and signal output requirements reasonable choice flowmeter model specifications.

To make the best use of the performance of the meter, use the flow meter should be within the range (20% ~ 80%) Qmax range is appropriate.

Keywords: LWQ gas turbine flowmeter; LWQ gas flowmeter; LWQ-N; LWQ-A; LWQ-B; LWQ-C; LWQ-D gas flow