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LWGY-series turbine flowmeter

Update: 2015-11-21 8:02:25 Click:
  • 迪川仪表 Brand: Dichuan Instrument
  • Submit orders Go to Taobao
Introduction

【a brief introdction】

LWGY-25 turbine flowmeter is a small-diameter screw-mounted LWGY-32 turbine flowmeter. The company is a manufacturer of LWGY-40 turbine flowmeters. The LWGY-50 turbine flowmeters produced are of good quality and cheap. Welcome new and old Customer came to consult LWGY-25 turbine flowmeter

【Detailed description】

涡轮流量计 ,本公司是LWGY-40涡轮流量计厂家,生产的LWGY-50涡轮流量计质量好,价格便宜欢迎广大新老客户前来咨询LWGY-25涡轮流量计 LWGY-25 turbine flowmeter is a small-diameter screw-mounted LWGY-32 turbine flowmeter . The company is a manufacturer of LWGY-40 turbine flowmeters . The LWGY-50 turbine flowmeters produced are of good quality and cheap. Welcome new and old Customer came to consult LWGY-25 turbine flowmeter

Brand

Dechuan Instrument

model

LWGY

Types of

Impeller flowmeter

Measuring range

0.04-25 (m3 / h)

Accuracy class

0.5

Nominal diameter

DN4-200 (mm)

Applicable medium

Water, liquid

Working pressure

0-16 (MPa)

Operating temperature

-20 ~ 80 (℃)

 

 

~+ 120℃ 。 (1) Medium temperature: -20 to + 120 ° C. 环境温度: -20 ~+ 55℃(2) Ambient temperature: -20 to + 55 ° C. 供电电源:电压: 12V±10%,电流: ≤10mA(3) Power supply: voltage: 12V ± 10%, current: ≤10mA . 输出电压幅值:高电平≥8V ,低电平≤0.8V(4) Output voltage amplitude: high level ≥8V , low level ≤0.8V . 传输距离:传感器至显示仪表的距离可达1000m(5) Transmission distance: The distance from the sensor to the display instrument can reach 1000m .

I. Overview

  

以下简称传感器)基于力矩平衡原理,属于速度式流量仪表。 Turbine flow sensor ( hereinafter referred to as sensor ) is based on the principle of torque balance and belongs to the speed type flow meter. The sensor has the characteristics of simple structure, light weight, high accuracy, good reproducibility, sensitive response, easy installation and maintenance, etc. It is widely used in petroleum, chemical, metallurgy, water supply, papermaking and other industries.  

2Cr13及刚玉Al2O3 、硬质合金不起腐蚀作用,且无纤维、颗粒等杂质的液体。 The sensor and display instrument are used together to measure liquids that are not corroded with stainless steel 1Cr18Ni9Ti , 2Cr13 , corundum Al2O3 , and cemented carbide in closed pipelines, and have no impurities such as fibers and particles. If it is matched with a display instrument with special functions, it can also perform quantitative control and over-alarm. 可在有爆炸危险的环境中使用。 The explosion-proof type (ExmIIT6) of this product is selected , and it can be used in the environment with explosion danger.

的介质,对于粘度大于5×10-6m2/s的液体,要对传感器进行实液标定后使用。 The sensor is suitable for mediums with a viscosity less than 5 × 10-6m2 / s at the working temperature. For liquids with a viscosity greater than 5 × 10-6m2 / s , the sensor must be calibrated with a solid solution before use.

If the user needs a special type of sensor, he can negotiate the order. When an explosion-proof sensor is needed, he will explain it in the order.

Second, the basic turbine flow sensor

2 结构特征与工作原理 1 Structural characteristics and working principle

2 1 . 结构特征 1 Structural Features

The sensor is a hard alloy bearing thrust type, which not only guarantees accuracy and improves wear resistance, but also has the characteristics of simple structure, firmness and easy disassembly and assembly.

2 1 . 工作原理 2 working principle

由永久磁钢和线圈组成)的磁场中,旋转的叶片切割磁力线,周期性的改变着线圈的磁通量,从而使线圈两端感应出电脉冲信号,此信号经过放大器的放大整形,形成有一定幅度的连续的矩形脉冲波,可远传至显示仪表,显示出流体的瞬时流量或总量。 The fluid flows through the sensor housing. Because the blade of the impeller has a certain angle with the flow direction, the impulse of the fluid causes the blade to have a rotating moment. After the friction torque and the fluid resistance are overcome, the blade rotates. After the torque is balanced, the speed is stable. Under certain conditions, The rotation speed is proportional to the flow velocity. Because the blade is magnetically permeable, it is in the magnetic field of a signal detector ( consisting of permanent magnetic steel and a coil ) . The rotating blade cuts the magnetic field lines and periodically changes the magnetic flux of the coil, so that both ends of the coil An electric pulse signal is induced. 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 a display instrument remotely, showing the instantaneous flow or total amount of fluid. 与流经传感器的流体的瞬时流量Q成正比,流量方程为: In a certain flow range, the pulse frequency f is proportional to the instantaneous flow Q of the fluid flowing through the sensor, and the flow equation is:

In the formula:

f —— pulse frequency [Hz]

,由校验单给出。 k —— the meter coefficient [1 / m3] of the sensor, given by the checklist. 为单位 If [1 / L] is the unit

工作状态下)[m3/h] Q-instantaneous flow of fluid (in working state ) [m3 / h]

3600-conversion factor

值设入配套的显示仪表中,便可显示出瞬时流量和累积总量。 The instrument coefficient of each sensor is filled in the verification certificate by the manufacturer, and the value of k is set in the supporting display instrument to display the instantaneous flow rate and the cumulative total.

2 基本参数与技术性能 2 Basic parameters and technical performance  

) (1) Basic parameters: see table ( 1 )

) Table ( 1 )

Produce   Product   type   number   versus   Mark   Remember  

Say             Bright  

 

LWGY □

□□□

 

class  

type  

LWY

 

 

 

 

供电,脉冲输出,高电平≥8V Basic type, + 12V power supply, pulse output, high level ≥8V

Low level≤0.8V

LWYA

 

 

 

 

20mA两线制电流输出,远传変送型 4 to 20mA two-wire current output, remote transmission  

LWYB

 

 

 

 

Battery-powered field display  

LWYC

 

 

 

 

20mA两线制电流输出 On-site display / 4 to 20mA two-wire current output  

public  

Weigh  

through  

path  

4

 

 

 

,普通涡轮流量范围0.040.25m3/h 4mm , general turbine flow range 0.04 to 0.25m3 / h

0.4m3/h Wide-range turbine is 0.04 to 0.4m3 / h

6

 

 

 

,普通涡轮流量范围0.10.6m3/h 6mm , general turbine flow range 0.10.6m3 / h

0.6m3/h Wide-range turbine is 0.06 to 0.6m3 / h

10

 

 

 

,普通涡轮流量范围0.21.2m3/h 10mm , general turbine flow range 0.21.2m3 / h

1.5m3/h Wide-range turbine is 0.15 to 1.5m3 / h

15

 

 

 

,普通涡轮流量范围0.66m3/h 15mm , common turbine flow range 0.66m3 / h

8m3/h Wide-range turbine is 0.4 to 8m3 / h

25

 

 

 

,普通涡轮流量范围110m3/h 25mm , general turbine flow range 110m3 / h

10m3/h Wide range turbine is 0.510m3 / h

40

 

 

 

,普通涡轮流量范围220m3/h 40mm , general turbine flow range 220m3 / h

20m3/h Wide-range turbine is 1 to 20m3 / h

50

 

 

 

,普通涡轮流量范围440m3/h 50mm , common turbine flow range 440m3 / h
40m3/h Wide range turbine is 240m3 / h

80

 

 

 

,普通涡轮流量范围10100m3/h 80mm , general turbine flow range 10100m3 / h

100m3/h Wide range turbine is 5100m3 / h

100

 

 

 

,普通涡轮流量范围20200m3/h 100mm , general turbine flow range 20200m3 / h

200m3/h Wide-range turbine is 10200m3 / h

150

 

 

 

,普通涡轮流量范围30300m3/h 150mm , general turbine flow range 30300m3 / h

300m3/h Wide-range turbine is 15300m3 / h

200

 

 

 

,普通涡轮流量范围80800m3/h 200mm , general turbine flow range 80 ~ 800m3 / h

800m3/h Wide-range turbine is 40800m3 / h

Prevent    burst

 

 

 

Unmarked, non-explosion-proof

B

 

 

Explosion-proof

Accuracy

grade

A

 

Accuracy class 0.5

B

 

Accuracy level 1

eddy   wheel

class   type

A

Wide range turbine

B

Ordinary turbine

; DN4—DN40 caliber sensors are threaded and the maximum working pressure is 6.3Mpa ;

最大工作压力为2.5Mpa ; The DN50-DN200 caliber sensor is flanged , and the maximum working pressure is 2.5Mpa ;

DN4—DN10 caliber sensors have straight pipe sections and filters at the front and rear.

Sensors with a diameter of DN15 or above can be matched with straight pipe sections.

口径的传感器也可制作成法兰连接,但需在订货时说明。 DN25- DN40 sensor can also be made into flange connection, but it needs to be specified when ordering.

(2) Medium temperature: -20 ~ + 120 ℃ .

~+ 55℃(3) Ambient temperature : -20 to + 55 ° C.

电流: ≤10mA(4) Power supply: voltage: 12V ± 10%, current: ≤10mA .

,低电平≤0.8V(5) Output voltage amplitude: high level ≥8V , low level ≤0.8V .

(6) Transmission distance: The distance from the sensor to the display instrument can reach 1000m .

2 安装、使用和调整 3 installation, use and adjustment

note:

Ÿ The sensor can be installed horizontally and vertically, and the fluid direction must be upward when it is installed vertically. The liquid should fill the pipe without air bubbles. During installation, the direction of liquid flow should be the same as the direction of the arrow on the sensor housing. 倍公称通径长度的直管段,下游端应不少于5倍公称通径的直管段,其内壁应光滑清洁,无凹痕、积垢和起皮等缺陷。 The upstream end of the sensor should have at least 20 times the nominal diameter length of the straight pipe section, and the downstream end should be no less than 5 times the nominal diameter length of the straight pipe section. The pipe axis of the sensor should be aligned with the axis of the adjacent pipe, and the gasket used for connection sealing must not penetrate the inner cavity of the pipe.

Ÿ The sensor should be kept away from the external electric and magnetic fields. If necessary, effective shielding measures should be taken to avoid external interference.

Ÿ In order not to affect the normal transportation of liquid during maintenance, it is recommended to install a bypass pipe at the installation location of the sensor.

Ÿ When the sensor is installed in the open, please waterproof the amplifier and plug. The connection between the sensor and the display instrument is shown in Figure 4.

60目。 Ÿ When the fluid contains impurities, a filter should be installed. The filter mesh depends on the flow impurities, which is generally 20 to 60 mesh. When free gas is mixed in the fluid, a degasser should be installed. The entire piping system should be well sealed.

Ÿ The user should fully understand the corrosion of the measured medium and prevent the sensor from being corroded.

2 3 使用和调整 2 use and adjustment

Ÿ When using, keep the measured liquid clean and free of impurities such as fibers and particles.

Ÿ When the sensor is used, the sensor should be slowly filled with liquid, and then the outlet valve should be opened. It is strictly forbidden to be impacted by high-speed fluid when the sensor is in a liquid-free state.

Ÿ The sensor maintenance period is generally half a year. When cleaning, please be careful not to damage the parts in the measuring cavity, especially the impeller. Please pay attention to the positional relationship between the guide and the impeller during assembly.

Ÿ When the sensor is not in use, the internal liquid should be cleaned, and protective covers should be placed on both ends of the sensor to prevent dust from entering, and then stored in a dry place.

Ÿ The filter when used should be cleaned regularly. When not in use, the internal liquid should be cleaned. Like the sensor, add a dust cover and store it in a dry place.

埋地时应套上铁管。 ) Ÿ The sensor's transmission cable can be laid overhead or buried ( should be covered with iron pipes when buried ) .

Ÿ Before the sensor is installed, connect it to the display instrument or oscilloscope first, switch on the power, blow by mouth or dial the impeller by hand, make it rotate quickly to observe whether there is display, and then install the sensor when there is display. If there is no display, you should check the relevant parts and troubleshoot.

涡轮流量计 ,本公司是LWGY-40涡轮流量计厂家,生产的LWGY-50涡轮流量计质量好,价格便宜欢迎广大新老客户前来咨询LWGY-25涡轮流量计 LWGY-25 turbine flowmeter is a small-diameter screw-mounted LWGY-32 turbine flowmeter . The company is a manufacturer of LWGY-40 turbine flowmeters . The LWGY-50 turbine flowmeters produced are of good quality and cheap. Welcome new and old Customer came to consult LWGY-25 turbine flowmeter

涡轮流量计 ,本公司是LWGY-40涡轮流量计厂家,生产的LWGY-50涡轮流量计质量好,价格便宜欢迎广大新老客户前来咨询LWGY-25涡轮流量计 LWGY-25 turbine flowmeter is a small-diameter screw-mounted LWGY-32 turbine flowmeter . The company is a manufacturer of LWGY-40 turbine flowmeters . The LWGY-50 turbine flowmeters produced are of good quality and cheap. Welcome new and old Customer came to consult LWGY-25 turbine flowmeter

价格低廉,如果您对我们的【 供应 LWGY-50 涡轮流量计 】感兴趣,请随时拨打下方的电话,点击留言或QQ1229677499与我交谈,联系我时,请说是在中国供应商上看到的,谢谢! Our company has provided [ Supply LWGY-25 Turbine Flow Meter ] for a long time , and the price is low. If you are interested in our [ Supply LWGY-50 Turbine Flow Meter ], please feel free to call the phone below, click the message or QQ1229677499 to talk to me, contact In my case, please say that you saw it on Chinese suppliers, thank you!

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