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Beijing Zhisheng Weihua Chemical Co., Ltd

E-mail
2880442903@qq.com
Phone
15810936203
Address
108A, Liandong U Valley West District, Majuqiao Town, Tongzhou District, Beijing

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turbine flow meter

NegotiableUpdate on 01/20

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Overview: The LWY series turbine flowmeter has the characteristics of simple structure, lightweight, high accuracy, good repeatability, sensitive response, and easy installation, maintenance, and use

Product Details

Overview

The LWY series turbine flowmeter has the characteristics of simple structure, lightweight, high accuracy, good repeatability, sensitive response, and easy installation, maintenance, and use.
Typical applications include water, diesel, methanol, and other non impurity and non corrosive liquids. When paired with display instruments with special functions, it can also perform quantitative control and over limit alarm, making it an ideal instrument for flow measurement and energy conservation.

feature

1. The sensor is a hard alloy bearing thrust type, which not only ensures accuracy and improves wear resistance, but also has the characteristics of simple structure, firmness, and easy disassembly and assembly
2. Multiple transmitter modes: three wire pulse output; 2-wire system with 4~20mA current output; On site display and output 4~20mA; Battery powered, suitable for different usage scenarios
3. Intelligent processing: multi-point non-linear correction of instrument coefficients to ensure high precision across the entire range
4. Instrument coefficient and cumulative flow value are maintained in case of power failure for ten years without loss

working principle
The fluid flows through the sensor housing, and the blades of the dry impeller have a certain angle with the flow direction. The impulse of the fluid causes the blades to have a rotational torque. After overcoming the friction torque and fluid resistance, the blades rotate. After the torque is balanced, the speed is stable. Under certain conditions, the speed is proportional to the flow rate. Due to the magnetic conductivity of the blades, they are in the magnetic field of the signal detector (composed of magnetic steel and coils). The rotating blades cut the magnetic field lines and periodically change the magnetic flux of the coil, causing electrical pulse signals to be induced at both ends of the coil. This signal is amplified and shaped by an amplifier to form a continuous rectangular pulse wave with a certain amplitude, which can be transmitted to the display instrument remotely to display the instantaneous flow rate or total amount of the fluid.Within a certain flow range, the pulse frequency f is proportional to the fluid flowing through the sensor (instantaneous flow rate Q), and the flow calculation formula is:

Basic performance parameters

measuring medium			Liquid (not corrosive to 304 or 316 stainless steel, 2Cr13 steel or nickel, and steel jade Al2O3)
Diameter mm		threaded connection	4. 6, 10, 15, 20, 25, 32, 40
		flange connection	（25）、（32）、（40）、50、65、80、100、125、150、200 (DN25-40 is usually a threaded connection, flange connection requires special ordering)
accuracy class			Level 1, Level 0.5 (up to Level 0.2 for specific traffic segments)
repetitiveness			± 0.2% of the indicated value
medium temperature			-20℃～+120℃
Applicable Environment			Temperature: -20 ℃~+55 ℃, humidity: 5-95%
Protection level			IP67
Explosion-proof rating			ExmIICT6 ExdIIBT6
power supply			12VDC 24VDC or battery powered (3.2V 10AH)
output signal	pulse output		Voltage amplitude: High level ≥ 8V, low level ≤ 0.8V	Transmission distance ≤ 1000 meters
	standard current		4-20mA DC
Straight pipe section requirements			Flow meter upstream ≥ 20DN downstream ≥ 5DV

Measurement range and nominal pressure

Diameter DN mm	Normal measurement range m ³/h	Expand flow range m ³/h	Conventional nominal pressure MPa	High pressure type pressure resistance MPa
4	0.04-0.25	0.04-0.4	6.3	25
6	0.1-0.6	0.06-0.6	6.3	25
10	0.2-1.2	0.15-1.5	6.3	25
15	0.6-6	0.4-8	6.3	25
20	0.8-8	0.45-9	6.3	25
25	1-10	0.5-10	6.3 (flange 4.0)	25
32	1.5-15	0.75-15	6.3 (flange 4.0)	25
40	2-20	1-20	6.3 (flange 4.0)	25
50	4-40	2-40	2.5	25
65	7-70	4-70	2.5	25
80	10-100	5-100	2.5	25
100	20-200	10-200	2.5	25
125	25-250	13-250	2.5	25
150	30-300	15-300	1.6	16
200	80-800	40-800	1.6	16

Outline structure and dimensions of conventional turbine flowmeter sensors

① LWY-4~10 sensor structure
Installation dimension diagram
② LWY-15~40 sensor structure
Installation dimension diagram
③ LWY-15~200 Sensor Structure
Installation dimension diagram

Size Chart

Nominal diameter mm	L(mm)	G	D(mm)	d(mm)	H (number of holes)
4	225	G1/2
6	225	G1/2
10	345	G1/2
15	75	G1	φ65	φ14	4
20	80	G1	φ75	φ14	4
25	100	G5/4	φ85	φ14	4
32	140	G2	φ100	φ14	4
40	140	G2	φ110	φ18	4
50	150		φ125	φ18	4
65	170		φ145	φ18	4
80	200		φ160	φ18	8
100	220		φ180	φ18	8
125	250		φ210	φ25	8
150	300		φ250	φ25	8
200	360		φ295	φ23	12

Selection instructions:

Model Number								Instructions
LWY	□	□	□	□	□	□	□
public call, name, say, weigh through path	4							4mm， The flow range of a regular turbine is 0.04~0.25m3/h, while that of a wide range turbine is 0.04~0.4m3/h
	6							6mm， The flow range of a regular turbine is 0.1~0.6m3/h, while that of a wide range turbine is 0.06~0.6m3/h
	10							10mm， The flow rate range of ordinary turbines is 0.2~1.2m3/h, while that of wide range turbines is 0.15~1.5m3/h
	15							15mm， The flow range of a regular turbine is 0.6~6m3/h, while that of a wide range turbine is 0.4~8m3/h
	20							20mm， The flow range of a regular turbine is 0.8~8m3/h, while that of a wide range turbine is 0.45~9m3/h
	25							25mm， The flow rate range of ordinary turbines is 1-10m3/h, while that of wide range turbines is 0.5-10m3/h
	32							32mm， The flow range of a regular turbine is 1.5~15m3/h, while that of a wide range turbine is 0.75~15m3/h
	40							40mm， The flow rate range of ordinary turbines is 2-20m3/h, while that of wide range turbines is 1-20m3/h
	50							50mm， The flow rate range of ordinary turbines is 4~40m3/h, while that of wide range turbines is 2~40m3/h
	65							65mm， The flow range of a regular turbine is 7-70m3/h, while that of a wide range turbine is 4-70m3/h
	80							80mm， The flow range of a regular turbine is 10-100m3/h, while that of a wide range turbine is 5-100m3/h
	100							100mm， The flow range of a regular turbine is 20~200m3/h, while that of a wide range turbine is 10~200m3/h
	125							125mm， The flow range of a regular turbine is 25~250m3/h, while that of a wide range turbine is 13~250m3/h
	150							150mm， The flow range of a regular turbine is 30~300m3/h, while that of a wide range turbine is 15~300m3/h
	200							200mm， The flow range of a regular turbine is 80~800m3/h, while that of a wide range turbine is 40~800m3/h
type		N						Basic type, 12~24VDC power supply, three wire pulse output
		A						4-20mA two-wire current output, remote transmission type
		B						Battery powered on-site display type, no current output
		C						On site display with 4-20mA two-wire current output type
accuracy class			05					Accuracy level 0.5
accuracy class			10					Grade 1 accuracy
Turbine type				W				Wide range turbine (accuracy can only be selected as 1.0 level)
Turbine type				S				Standard turbine
body material					S			304 stainless steel
body material					L			316 stainless steel
explosion-proof						N		No explosion-proof
explosion-proof						E		Explosion proof type (Exd Ⅱ BT6)
pressure rating							N	Conventional (refer to the measurement range and nominal pressure on page 2)
pressure rating							H	High pressure (refer to the measurement range and nominal pressure on page 2)

Note: DN4~10 are all threaded connections and come standard with front and rear straight pipe sections and filters;
② DN15~40 is also commonly connected by threads, but flange connection can also be selected for DN15~40. When selecting, it is necessary to add oil after the diameter
(FL) represents flange connection;
③ DN50~200 are all flange connections.

Overview

The LWQ series gas turbine flowmeter is a new generation of high-precision and high reliability gas precision measuring instrument that integrates temperature, pressure, flow sensors, and intelligent flow integrators. It has been independently developed by drawing on domestic and foreign flow instrument technology and optimizing design, and integrating theories of gas mechanics, fluid mechanics, electromagnetics, etc. It has excellent low-pressure and high-pressure metering performance, multiple signal output modes, and low sensitivity to fluid disturbances, and is widely used for metering gases such as natural gas, coal to gas, liquefied gas, and light hydrocarbon gas.

Product Features

Adopting a new type of sensor, it has low starting flow rate, small pressure loss, good anti vibration and anti pulsating flow performance, is not easy to corrode, has good reliability, and has a long service life.
Adopting a new type of microprocessor and high-performance integrated chips, it has high computational accuracy, powerful overall functions, and high performance.
The micro power consumption used has low overall power consumption. It can operate on both internal battery power for a long time and external power supply.
According to the flow frequency signal, the instrument coefficient can be automatically linearly corrected in eight segments, which can improve the calculation accuracy of the instrument according to user needs.
Adopting EEPROM data storage technology, it has the function of storing and querying historical data, and three historical data recording methods are available for users to choose from.
The flowmeter head can rotate 180 degrees, making installation and use simple and convenient.
High precision, generally up to ± 1.5% R and ± 1.0% R0.
Good repeatability, short-term repeatability can reach 0.05%~0.2%. It is precisely because of its good repeatability that flow meters are preferred for trade settlement

Basic Parameters

Instrument diameter (mm) and connection method	25, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300 are connected by flanges 25, 40, 50, can be connected with threads
accuracy class	±1.5%
Instrument material	Table body: 304 stainless steel or cast aluminum Converter: cast aluminum Impeller: anti-corrosion ABS or high-quality aluminum alloy
Terms of Use	Medium temperature: -20 ℃~80 ℃, humidity: 5-95% Environmental temperature: -30 ℃~60 ℃, atmospheric pressure: 80kpc-106kpc
working power supply	External power supply:+24VDC, suitable for 4-20mA output, pulse output, RS485, etc., with a total power consumption of less than 1W Internal power supply: 1 set of 3.6V10AH lithium batteries, no signal output, average power consumption ≤ 1W, can be connected and used for more than 3 years.
Signal line connection	Internal thread M20 * 1.5 or other
Explosion-proof rating	Exia Ⅱ CT4 or Exd Ⅱ BT6
Protection level	IP65

size

Diameter mm	L	D	K	N	D	bolt specification	Conventional pressure resistance MPa
DN25	170	115	85	4	φ14	M12×50	4.0
DN40	200	150	110	4	φ18	M16×55
DN50	200	165	125	4	φ18	M16×60
DN65	240	185	145	4	φ18	M16×65	1.6
DN80	240	200	160	8	φ18	M16×70
DN100	300	220	180	8	φ18	M16×80
DN125	240	250	210	8	φ18	M16×80
DN150	450	285	240	8	φ22	M20×80
DN200	600	340	295	12	φ22	M20×90
DN250	500	403	355	12	φ26	M24×90
DN300	300	460	410	12	φ26	M24×100

measurement range

Nominal diameter (mm)	model	Range (m3/h)	Initial flow rate (m3/h)	pressure rating	Installation method
DN25	LWQ-25	2.5-25	1	1.6	Flange (thread)
DN40	LWQ-40	5-50	2.5	1.6	Flange (thread)
DN50	LWQ-50A	6-65	3.5	1.6	flange
DN50	LWQ-50B	10-100	3.5	1.6	flange
DN65	LWQ-65	15-200	5	1.6	flange
DN80	LWQ-80A	13-250	5	1.6	flange
DN80	LWQ-80B	20-400	5	1.6	flange
DN100	LWQ-100A	20-400	8	1.6	flange
DN100	LWQ-100B	35-650	8	1.6	flange
DN125	LWQ-125	35-700	10	1.6	flange
DN150	LWQ-150A	35-700	10	1.6	flange
DN150	LWQ-150B	50-1000	10	1.6	flange
DN200	LWQ-200A	80-1600	20	1.6	flange
DN200	LWQ-200B	130-2500	20	1.6	flange
DN250	LWQ-250A	150-2500	30	1.6	flange
DN250	LWQ-250B	200-4000	30	1.6	flange
DN300	LWQ-300	200-4000	40	1.6	flange

Selection and Explanation

Model Number				Instructions
LWQ	—□	—□	—□
ceremony table class type	N			Basic type, pulse output, no display
	A			Current output type, no display
	B			On site display type (no signal output)
	C			Display output type (on-site display+current output)
	D			Temperature and pressure compensation type (on-site display+current output)
ceremony table 口 path		25		25mm
		40		40mm
		50A/B		50mm
		80A/B		80mm
		100A/B		100mm
		150A/B		150mm
		200A/B		200mm
		250A/B		250mm
		300		300mm
sensor material			N	This material is aluminum alloy (pressure resistance: 1.0MPa), and the movement is made of anti-corrosion material
sensor material			S	The body material is 304 stainless steel (high-pressure type), and the movement is made of anti-corrosion material