Turbine Flow Meter

LRD-LWGYS Introduction

•     The LRD-LWGYS series of turbine flowmeters integrates advanced technology from both domestic and international flow measurement instruments, optimized for simplicity, lightness, high precision, excellent reproducibility, and sensitive response. Installation and maintenance are straightforward.The next-generation turbine flowmeter, featuring ease of use and other advantages, is widely used for measuring liquids in closed pipes that are non-corrosive to stainless steel grades 1Cr18Ni9Ti and 2Cr13, as well as alumina Al2O3 and hard alloy, and are free of fibers and particles. The liquids should have a kinematic viscosity less than 5×10^-6 m²/s at working temperatures. For liquids with a kinematic viscosity greater than 5×10^-6 m²/s, the flowmeter can be used after real-liquid calibration. When paired with a display instrument with special functions, it can also perform quantitative control and overfill alarms, making it an ideal instrument for flow measurement and energy conservation.

• LRD-LWGYS Product Features

• High precision, typically up to ±1%R, ±0.5%R, with high-precision models reaching ±0.2%R.

• Good repeatability, short-term repeatability can reach 0.05% to 0.2%. Due to its excellent repeatability, high precision can be achieved through regular calibration or online calibration.
  The flowmeter of choice for trade settlement.

• Output pulse frequency signal, suitable for total quantity measurement and computer connection, no zero-point drift, strong anti-interference ability.

• Achieve a high-frequency signal (3-4 kHz) with strong signal resolution.

• Variety of sizes, medium to large diameters up to 1:20, small diameters at 1:10.

• Compact and lightweight, easy to install and maintain, with high throughput capacity.

• Suitable for high-pressure measurement; no need to drill holes on the instrument body, easy to manufacture high-pressure models.

• Specialized sensors come in various types and can be custom-designed to meet specific user requirements, such as low-temperature models, bidirectional types, downhole models, and mixed-sand specialized sensors, among others.

• Insertable design for large diameter measurements; minimal pressure loss; low price; non-stop flow extraction; easy installation and maintenance.

• LRD-LWGYS Technical Specifications

• Standard of Implementation	Turbine Flow Sensor (JB/T9246-1999)
  Instrument Diameter (mm) & Connection Type	4, 6, 10, 15, 20, 25, 32, 40, 50, 65, 80 sizes feature threaded connections
  Accuracy Grade	±1%R, ±0.5%R, ±0.2%R (Special Order)
  Range Ratio	1:10；1:15；1:20
  Sensor Material	304 stainless steel, 316 (L) stainless steel
  Terms of Use	Medium Temperature: -20℃ to +120℃; Environmental Temperature: -20℃ to +60℃ Relative humidity: 5% to 90%       Atmospheric pressure: 86Kpa to 106Kpa
  Signal Output Function	Pulse Signal, 4-20mA Signal
  Communication Output Function	RS-485 communication, HART protocol
  Work Power Supply
  Signal Line Interface	Basic Type: Hausmann connector or with a 3-core cable; Explosion-proof Type: Internal thread M20*1.5
  Intrinsically Safe Rating	Exia II CT4 or Exd IIB T6
  Protection Level	IP65 or higher ( customizable )

• External Power Supply: +24VDC ±15%, ripple ≤ ±5%, suitable for 4-20mA output, pulse output, RS485, etc.

• Internal Power Supply: 1 set of 3.0V 10AH lithium battery, which can operate normally at battery voltages between 2.0V and 3.0V.

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• LRD-LWGYS Measuring Range and Working Pressure

• Instrument Diameter （mm）	Normal traffic range （m³/h）	Expand traffic range （m³/h）	Default installation method and pressure rating	Optional installation methods and default pressure rating	Specialized pressure rating （MPa）
  DN4	0.04～0.25	0.04～0.4	Threaded installation, 6.3 MPa	Flange installation, 2.5 MPa	12、16、25
  DN6	0.1～0.6	0.06～0.6	Threaded installation, 6.3 MPa	Flange Installation, 2.5 MPa	12、16、25
  DN10	0.2～1.2	0.15～1.5	Threaded installation, 6.3 MPa	Flange Installation, 2.5 MPa	12、16、25
  DN15	0.6～6	0.4～8	Threaded installation, 6.3 Mpa	Flange Installation, 2.5 MPa	4.0、6.3、12、16、25
  DN20	0.8～8	0.45～9	Threaded installation, 6.3 MPa	Flange Installation, 2.5 MPa	4.0、6.3、12、16、25
  DN25	1～10	0.5～10	Threaded installation, 6.3 MPa	Flange Installation, 2.5 MPa	4.0、6.3、12、16、25
  DN32	1.5～15	0.8～15	Threaded installation, 6.3 MPa	Flange Installation, 2.5 MPa	4.0、6.3、12、16、25
  DN40	2～20	1～20	Threaded installation, 6.3 MPa	Flange installation, 2.5 MPa	4.0、6.3、12、16、25
  DN50	4～40	2～40	Flange Installation, 2.5 MPa	Bolted connections, 6.3 MPa	4.0、6.3、12、16、25
  DN65	7～70	4～70	Flange Installation, 1.6 MPa	Bolted connection, 6.3 MPa	4.0、6.3、12、16、25
  DN80	10～100	5～100	Flange Installation, 1.6 MPa	Threaded connections, 6.3 MPa	4.0、6.3、12、16、25
  DN100	20～200	10～200	Flange Installation, 1.6 MPa		4.0、6.3、12、16、25
  DN125	25～250	13～250	Flange Installation, 1.6 MPa		2.5、4.0、6.3、12、16
  DN150	30～300	15～300	Flange Installation, 1.6 MPa		2.5、4.0、6.3、12、16
  DN200	80～800	40～800	Flange Installation, 1.6 MPa		2.5、4.0、6.3、12、16

• LRD-LWGYS Installation Dimensions

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  Sensor installation methods vary by specification, utilizing either threaded or flanged connections. Installation methods are depicted in Figures 1, 2, and 3, with installation dimensions listed in the table below:
  
  

• Nominal Bore Diameter (mm)	L(mm)	G	K（mm）	D（mm）	Number of Holes (n)
  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	G5/2	Φ125	Φ18	4
  65	170		Φ145	Φ18	4
  80	200		Φ160	Φ18	8
  100	220		Φ180	Φ18	8
  125	250		Φ210	Φ18	8
  150	300		Φ240	Φ22	8
  200	360		Φ295	Φ22	12

• LRD-LWGYS Product Categories

• Technical Items	Technical Specifications		Technical Specifications		Technical Specifications
  Instrument Model	LRD-LWGYS-N		LRD-LWGYS-A		LRD-LWGYS-B	LRD-LWGYS-C
  Signal Output	Pulse		4-20mA		No content provided.	4-20mA/Pulse
  Power Supply	+24VDC±15%	+24VDC±15%	24VDC±15%	24VDC±15%	Lithium-ion Battery	24VDC±15%
  Precision Grade	1.0-0.5 grades		1.0 to 0.5 grade		1.0-0.5 grades
  Measurement Range	Standard Range		Standard Range		Standard Range or Extended Range
  Monitor	No content provided.		No content provided.		Available
  Communication Interface	N/A		No content provided.		No content provided.	Optional RS485
  Communication Protocol	N/A		No content provided.		No content provided.	Moubus HART
  Instrument Material	Stainless Steel		Stainless Steel		Stainless Steel
  Intrinsically Safe Rating	N/A		ExdIIBT6 or ExiaIICT4		ExdIIBT6 or ExiaIICT4
  Protection Grade	IP60		IP65		IP65
  Total Power Consumption	< 1W		< 1W		< 1W
  Instrument passage	DN4～DN250		DN4～DN250		DN4～DN250
  Medium Temperature	-20℃～120℃		-20℃～120℃		-20℃～120℃
  Ambient Temperature	-30℃～60℃		-30℃～60℃		-30℃～60℃