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超声波UA测试平台

超声波流量计ExactSonic P的发动机测试平台应用

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ExactSonic P

ExactSonic P - 超声波流量计ExactSonic P的发动机测试平台应用

管段式管径50、80、100、150、200、250 和300 mm(更多备询)。可通过在变送器中的温压补偿计算将工况流量换算成标准流量或质量流量。变送器一体化集成在金属盒内，触摸屏上可以直接显示测量值，也可通过它修改参数。同时也可通过AK协议与控制室/计算机进行通讯和远程控制。

此流量计管段包含带颈/中间法兰，管段之间用卡箍或链式卡箍连接。

大管径流量计通常带法兰过程连接，遵循DIN EN 1092-1, Form B1，带适用于起重机运输的孔眼。同样也可选择平滑管段口作为过程连接。

所有管段可以加装一个稳定的支撑架，以便产品放置在水平表面上。可加购安置/运输箱。

测量原理是超声波时差法。它是通过交替发送顺流和逆流的超声波脉冲信号来测得流速，探头轮流作为发射器和接收器。顺流时超声波信号通过的时间比逆流时短，这之间的时差Δt加上通过的路径长度可换算出气体的平均流速。特殊的调制方法可避开干扰，使测量结果更精准。通过被测流速和管道横截面积，一体化的变送器可计算出工况体积流量，然后再加上测得的压力和温度可换算出标准体积流量/质量流量。

ExactSonic P的显著优势在于它的测量分辨率为1 kHz，从而可以精准捕捉发动机进气阀门开关而导致的流量波动。正负流向也可被测量，测量时不需要额外的稳压桶，这几点与ExactFlow II相比有很大优势。

使用超声波测量原理可将压损降至最低，并且可实现大管径测量。

ExactSonic P 适用于干净、单相、中性和非可燃气体，最高耐压0.4 MPa。如需测量更高压力和腐蚀性气体可选用ExactFlow II。

输出信号:

  • 模拟输出4 - 20 mA 和 0-10 V
  • 可通过LAN、Ethernet RJ45、AK协议读取数据和修改参数
  • USB接口用于日志文档的存储

 

What is ultrasonic flow measurement?

Ultrasonic flow measurement is an advanced, non-contact technique for determining flow velocities and volumetric flow rates in pipes.

It's based on the transit-time difference method: ultrasonic pulses are transmitted in both directions - with and against the flow. The difference in the transit times of these signals allows for the precise determination of the medium's flow velocity. This method offers the advantage of having no moving parts, resulting in high reliability and durability.

Ultrasonic flow measurement is particularly suitable for applications where no mechanical influence on the medium is desired, as it operates without direct contact with the flowing medium. This prevents wear and measurement errors caused by the medium itself.

ExactSonic P: High-Performance Ultrasonic Flow Meter for Test benches

The ExactSonic P from Höntzsch is a state-of-the-art ultrasonic flow meter designed specifically to meet the requirements of test bench applications. Using the transit-time difference method flow velocities can be measured  with high precision. Ultrasonic pulses are transmitted alternately in the direction of flow and against it, and the difference in transit times is used to calculate the average flow velocity

An integrated transducer combines this velocity with the pipe cross-section to calculate the volumetric flow rate. In addition, pressure and temperature are measured to accurately determine the standard volumetric flow rate or mass flow rate. As a result, the ExactSonic P delivers reliable and precise flow measurements that are critical in many test bench applications. 

Thanks to continuous real-time data monitoring, the Exactsonic P allows more precise control of test processes, thereby helping to optimize test bench efficiency. The ExactSonic P's integrated ultrasonic flow sensor ensures continuous, high precision measurement of flow velocity in real time.

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Installation und Assembly

The ExactSonic P is typically installed in a measuring tube with an inner diameter of 50 to 300 mm. Depending on the requirements, the device can be mounted using a conical or intermediate flanges as well as clamping rings or chains. For larger pipe diameters, process flanges in accordance with DIN EN 1092-1 (Form B1) are required to ensure a secure installation.

In addition, support feet can be used to stbailize the pipe system on the test bench. A storage and transport case is also available upon request. 

Thanks to the ExactSonic P's modular design, customizations can be made to meet specific requirements across various industries, whether for small or large pipe diameters. 

Benefits & Applications - Why the ExactSonic P is ideal for Test Benches

Advantages of ultrasonic flow measurement

  • Wear-free measurement: with no moving parts, there is no mechanical wear
  • Low pressure loss: minimal pressure drop due to no cross section blockage
  • High dynamic and wide measuring range: perfect for rapid changes in flow velocity
  • Independence from medium properties: insensitive to changes in the medium's electrical conductivity and viscosity
  • Low-maintenance and robust: very low maintenance requirements due to the absence of mechanical parts
  • Fast measurement response: modern DSP technology (digital signal processing) ensures quick data processing
  • Bidirectional measurement: Allows measurement in both directions of flow, even under changing flow conditions
  • Optimal solution for test benches: beneficial for applications requiring fast response times and high precision

Typical applications

  • Engine and turbine test benches: measurement of air/gas intake flows in test benches for engines, filters, turbochargers, HVAC systems, valves and similar applications
  • Power plants and energy facilities: monitoring of heating gas or combustion processes
  • Process and chemical plants: monitoring of gas flows, particularly under dynamic load changes
  • Research and development: calibration and comparison setups
  • Compressed air systems and supply systems: where precise flow measurements and fast response times are required

 

 

 

The ExactSonic P is particularly well-suited for applications that require a wide dynamic range and quick response times - typical requirements in test bench systems. 

Technical Specifications & Design of the test bench flow meter

Mechanical structure & assembly

Electronics & signal processing

Limits of use / Restrictions

The ExactSonic P is housed in a compact enclosure with an integrated transducer. The pipe sections can be mounted using conical or intermediate flanges. For larger pipe diameters, process flanges in accordance with DIN EN 1092-1 (Form B1) are used to ensure a secure and stable installation.

Installation is flexible and can be performed, for example using clamping rings or chains. For increased stability on the test bench, the pipe system can be equipped with support feet. For portable use or for calibration returns, the system is also available with an optional carrying case.

The ExactSonic P's integrated transducer uses digital signal processors (DSPs) that quickly and reliably analyze the transit times and differences in the ultrasonic waves. A special modulation technique ensures high resistance against interference and allows measurements even under difficult conditions.

The measured data is processed together with pressure and temperature values to precisely calculate the standard volumetric flow rate or mass flow rate.

The Exactsonic P offers both analog outputs (4-20 mA, 0-10 V) and digital interfaces such as LAN, USB and AK protocol for data transmission and parameterization.

The Exactsonic P is specifically designed for measuring clean, single-phase, neutral gases. Corrosive, multiphase or heavily contaminated gases can affect measurement accuracy.  The perimissible pressure is approximately 0.4 MPa (4 bar). For  applications requiring higher pressures or more aggressive media, the ExactFlow II model is recommended.

In environments with highly variable process conditions - such as measurements under extreme temperature fluctuations or with media containing a high proportion of solids or liquids - additional measuring methods are advisable.

Send your enquiry now! 

测量范围

±1 … ±6360 m³/h
±1,2 … ±7630 kg/h

测量精度/再现性

<1% 测量值; <±0.5% 测量值
遵循ISO17025进行校准

耐压

4 bar 相对压力 / 0.4 MPa

介质温度

-20 … +60 °C

显示单位

温度、压力、工况体积流量、标准体积流量或质量流量+可选rh(气体湿度)

IP防护等级

IP65

输出信号

模拟输出4 - 20 mA und 0-10 V
可通过LAN、Ethernet RJ45、AK协议读取数据和修改参数
USB接口用于日志文档的存储

Ultrasonic Flowmeter - U433 Operating instruction ExactSonic P - U447
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