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阿牛巴流量计
02
Small pressure loss and low energy
consumption, energy saving effect is
remarkable.
Exclusive intuitive resonance
calculations are provided to ensure
long-term stable operation.
产品特点
No flow coefficient drift and long term
stability.
产品概述
The integrated structure of uniform
velocity tube, three-valve group,
temperature and pressure
compensation and transmitter makes it
easy to use.
01
Product overview
Applicable to square or rectangular
pipelines.
For similar products, where clogging is
unavoidable when measuring dirty
media, there are in-line extractable
types or manual and automatic purging
solutions and devices for maintenance
without stopping production.
5 适用于方形或矩形管道。
6
置，实现不停产维护。
型或提供手动和自动吹扫方案及装
可避免的堵塞问题，有在线可拔出
对于同类产品在测量脏污介质时不
4 器，组成一体化结构，使用方便。
均速管+三阀组+温压补偿+变送
3 无流量系数飘移，长期稳定。
2 确保长期稳定运行。
独家提供直观的共振验算，
1 压损小能耗低，节能效果显著。
复性。设计理论符合伯努力方程原理，并可用JJG／640－90规程进行检验。
阿牛巴流量计主要用于工业过程中各种能源如液体、燃料气、蒸气和气体的测量，具有较高的稳定性和重
布的多对取压孔，使准确测平均流速成为可能。
能精确地检测到由流体的平均速度所产生的平均差压。阿牛巴流量计速流量探头在高、低压区有按一定准则排
性能的关键因素。低压信号的稳定和准确对均速探头的精度和性能起决定性作用。阿牛巴流量计均速流量探头
分真空，并在探头的两侧出现旋涡。均速流量探头的截面形状、表面粗糙状况和低压取压孔的位置是决定探头
在探头后部产生一个低压分布区，低压分布区的压力略低于管道的静压。流体从探头流过后在探头后部产生部
产生一个高压分布区，高压分布区的压力略高于管道的静压。根据伯努利方程原理，流体流过探头时速度加快，
阿牛巴流量计（又称笛形均速管流量计和托巴管流量计）属于差压式流量计。当流体流过探头时，在其前部
61
Product
BAIC GROUP
Annubar Flow Meter
Product Overview
Annubar flow meters (also known as flute homogeneous tube flow meters and Toba tube flow meters) is a kind of
differential pressure flow meters. As the fluid flows through the probe, a high pressure distribution zone is generated in front
of it, which is slightly higher than the static pressure of the tube. According to the principle of Bernoulli's equation, the fluid
speeds up as it flows through the probe, creating a low-pressure distribution zone at the back of the probe, where the
pressure is slightly lower than the static pressure of the tube. Fluid flows through the probe generating a partial vacuum at
the back of the probe and vortices on both sides of the probe. The cross-sectional shape, surface roughness, and location of
the low-pressure taking orifice of the uniform flow velocity probe are key factors in determining the probe's performance.
The stability and accuracy of the low voltage signal is decisive for the accuracy and performance of the uniform velocity
probe. Annubar flow meter uniform flow velocity probe accurately detects the average differential pressure generated by
the average velocity of the fluid. Annubar flow meter uniform flow velocity probe has multiple pairs of pressure taking
orifices in the high and low pressure zones arranged according to a certain guideline, which makes it possible to accurately
measure the average flow velocity.
Annubar flow meters are used for the measurement of various energy sources such as liquids, fuel gases, vapors and
gases in industrial processes with high stability and repeatability. The design theory is in line with the principle of the
Bernoulli equation, and can be tested using JG/640-90 regulation.
Product Features
Small pressure loss and low energy
consumption, energy saving effect is
remarkable.
Exclusive intuitive resonance
calculations are provided to ensure
long-term stable operation.
No flow coefficient drift and long term
stability.
The integrated structure of uniform
velocity tube, three-valve group,
temperature and pressure
compensation and transmitter makes it
easy to use.
Applicable to square or rectangular
pipelines.
For similar products, where clogging is
unavoidable when measuring dirty
media, there are in-line extractable
types or manual and automatic purging
solutions and devices for maintenance
without stopping production.
输出信号
配套附件 一次阀 三阀组 差压变送器
防爆等级 本安/隔爆BT4-CT6
2 介质温度
液体 高炉煤气
level
Process connection
Power supply source
Output signal
Compensation mode
注：带补偿方式选项以含流量积算仪
法兰要求：
口径(mm)：
介质密度：
流体压力(MPa)：最低、常用、最高
介质温度(℃)：最小、常用、最大
流量范围(m³/h)：最小、常用、最大
被测介质的名称：
订货须知订货请写明下列内容
流体方向
流量积算仪
带差压变送器和
带流量积算仪
带差压变送器
不带附件
8
7
6
5
温度压力补偿
温度补偿
压力补偿
无
4
3
2
1
焦炉煤气
过热蒸汽
易脏气体
清洁气体
饱和蒸汽
易脏
干净液体
9
7
5
3
8
6
4
2
≤450℃
≤220℃
≤120℃
L
K
J
DN 50-1000
2.5MPA 10MPA
1.6MPA 6MPA
0.6MPA 4MPA
3 6
2 5
1 4
GH2520
316L
304
碳钢
4
3
2
1
仪表附件
法兰型
螺纹型
F
M
公称压力
本体材质
安装形式
补偿方式
介质类型
工作温度
公称通径
BSNB 阿牛巴流量计
03 流量计选型表
本体材质 碳钢 304 316 GH2520 重复性 ±0.1
供电电源 24V DC 防护等级 IP65
补偿方式 温度补偿 压力补偿 温压补偿
耐压等级 ≤10MPa 介质粘度 ≤30CP（相当于重油）
过程连接 法兰式 螺纹式 实用介质 液体 气体 蒸气
环境温度 - 0~70℃ (变送器) 常规≤120℃ 高温≤450℃
4-20mA
口径范围 DN50-DN1000 精度等级 ±1%%FS
品，提高了量程比。
蜂窝状六边形稳定结构，产生的是独有的流束分布形状，保证了低压信号的稳定，产生的差压高于同类产
也便于选用耐高温，耐腐蚀的材料。
外层冲击管采用一整块材料加工制作而成无焊接，与由双体结构焊接而成的同类产品相比自然有最高强度，
独有的内部二次平均结构，提供了高精度（读数±1%）和高重复性（±0.1%）。$ 可广泛用于工矿企业的高炉煤气、压缩空气、蒸汽和其他液体、气体的流量测量8
阿牛巴流量计以其安装简便、压损小、强度高、不受磨损影响、无泄漏等特点而成为替代孔板的理想产品。
62
Product
BAIC GROUP
· The Annubar flow meter has become an ideal product to replace the orifice plate due to its easy installation, small
pressure loss, high strength, no wear and tear, and no leakage. Widely used in industrial and mining enterprises for blast
furnace gas, compressed air, steam and other liquids, gas flow rate measurement.· Unique internal secondary uniform
structure provides high accuracy (±1% of reading) and high repeatability (±0.1%).
· The outer layer impact tube is made from a single piece of material without welding, which naturally has the highest
strength compared to similar products welded from a two-body structure, and facilitates the selection of hightemperature and corrosion-resistant materials.
· The honeycomb hexagonal stable structure produces a unique beam distribution shape, which ensures the stability of
the low-pressure signal and produces a higher differential pressure than similar products, improving the range ratio.
Caliber range
Pressure resistance
Body material
Ambient temperature
Matching accessories
Repeatablility
Medium viscosity
Accuracy level
Carbon steel 304 316 GH2520
-20~70°C(Transmitter)
Flange type Thread type
≤30CP (equivalent to heavy oil)
Medium temperature Regular≤ 120 °C high temperature ≤ 450 °C
Practical medium Liquid Gas Steam
Protection level
Explosion-proof level Intrinsically safe/flame-proof BT4-CT6
Temperature compensation Pressure compensation Temperature and pressure compensation
Primary valve Three-valve group Differential pressure transmitter
Flow Meter Selection Table
Annubar Flow Meter
Nominal
diameter
Installation form Thread type
Flange type Fluid direction
Body material Carbon steel
Nominal pressure
Operating temperature
Medium type
Compensation mode
Instrumentation accessories With differential pressure transmitter
Without accessories
With flow rate accumulator
With differential pressure
transmitter and flow rate
totalizer
None
Pressure compensation
Temperature compensation
Temperature and pressure compensation
Clean liquid
Clean gas
Easy-to-stain liquid
Easy-to-stain gas
Saturated steam
Overheated steam
Blast furnace coal gas
Coke oven coal gas
· Ordering information, please specify the following when ordering
Measured medium name:
Flow rate range (m³/h): minimum, common, maximum
Medium temperature (°C): minimum, common, maximum
Fluid pressure (MPa): minimum, common, maximum
Note: With compensation mode option containing flow rate totalizer
---
Medium density:
Caliber (mm):
Flange requirements:
