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Handheld Ultrasonic Flowmeter

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STUF-200H Handheld Ultrasonic Flowmeter

This low cost portable ultrasonic flowmeter is one of the most powerful clamp-on liquid flowmeters. It employees state-of-the-art digital signal processing and ultrasonic transit-time measurement technologies for accurate and reliable flow measurement. The unique signal quality tracking and self-adjusting capability allow the flowmeter to automatically match different pipe materials and fluid conditions. Since the transducers are the non-intrusive clamp-on type, the installation can be done in just a few minutes simple and easy. And no need to cut pipes or drill holes.

In this compact and light package, many built-in features make the flowmeter an ideal tool for flow surveys (water, waste water, oil, chemicals, food, beverages, etc), hydronic balancing, and other closed-pipe applications. The accuracy of the flowmeter is normally better than ±1%. Click here to see a NIST-traceable calibration report issued by Alden Lab, Massachusetts. In addition, a PC software program for data logger configuration and data download is also available.

Clamp-on Transit-Time Ultrasonic Flowmeter


STUF-300F1B Wall-Mount, Clamp-on Transit-Time Ultrasonic Flowmeter

The STUF-300F1B flowmeter is the new generation of our economical clamp-on ultrasonic flowmeter products. Compared with the previous generations, this generation offers higher performances and a richer feature set, all at a lower price.

Due to the non-intrusive nature of the clamp-on technique, there is no pressure drop, no moving parts, no leaks, and no contamination. The installation is very simple and the maintenance is minimal.

The STUF-300F1B is suitable for fixed-installation applications such as  liquid process control, city water management, flowmeter networking, etc.  

Low-Cost Clamp-on Flowmeter


STUF-200MB Low-Cost Clamp-on Flowmeter

The STUF-200MB is a module-based, low-cost, clamp-on ultrasonic flowmeter. It offers abundant capabilities for accurate, non-intrusive liquid flow measurement. Its RS485 interface with MODBUS support makes it well suited for flowmeter networking.

The STUF-200MB is designed to be compact, flexible, low power consumption, and, particularly, low-cost. These features make the flowmeter very attractive for OEM applications.

Insertion Transit-Time Flowmeter


STUF-300F1C Wall-Mount, Insertion Transit-Time Flowmeter

The STUF-300F1C ultrasonic flowmeter utilizes a pair of wetted (insertion) transducers to measure liquid flow in a pipe. Even though its transducers are inserted into the pipe wall, they do not intrude into the flow, thus do not generate disturbance or pressure drop to the flow. Compared with clamp-on flowmeters, the wetted type has the advantage of long-term stability and better accuracy. This type of liquid flowmeters are widely used in process control, water / waste water treatment plants, facility water management, oil/fuel flow monitoring, etc.

High-accuracy Flow-cell Ultrasonic Flowmeter


STUF-300F1G High-accuracy Flow-cell Ultrasonic Flowmeter

The STUF-300F1G flow-cell ultrasonic flowmeter focuses on high accuracy, long-term stability and no maintenance. The transducer is made from either cast iron or stainless steel. It is calibrated in the factory to high accuracy. There is no moving parts to wear out, thus the system has a long life span and needs no maintenance.

Thermal Energy Meter


STUF-300R1B Thermal Energy Meter

The STUF-300R1B ultrasonic thermal energy meter combines our high-accuracy transit time flowmeters (fixed installation version) with standard Pt100 temperature sensors to measure thermal energy transfer. It can be used for any liquid-based heating/cooling systems. STUF-300R1B is a very useful tool for energy consumption management in office buildings and apartment complexes. Customers also use it for monitoring the efficiency of a HVACs or other thermal energy production system.

StufManagerTM PC Software for Flowmeter Data Management
Shenitech has introduced StufManagerTM PC software to STUF-xxx users. This software is aimed to facilitate the use of and to explore the full potential of STUF-xxxx series ultrasonic flowmeters.

StufManagerTM software makes it very easy to connect a STUF-xxx flowmeter to a PC through the RS-232 or RS485 link. The software automatically detects the COM port used by the PC and talks to the flowmeter with minimum human interaction. StufManagerTM software can obtain the flowmeter data in real time and display the data on a graphic interface. In addition, it allows the real-time data to be recorded and saved into the PC hard drive.

One important feature of StufManagerTM is its data logger management functionality for STUF-200H handheld flowmeters. Through the user-friendly interface, one can easily configure the data logger. The software allows users to download data from the data logger, to format the downloaded raw data into standard format, and to save the data into the PC hard drive. One can use Excel or other spreadsheet software programs to manipulate the data.

Basic Facts about Ultrasonic Flowmeters

Ultrasonic flowmeters are very promising instruments for pipe flow measurement in process control, flow survey, custody transfer, etc. They have many advantages over conventional flowmeters, such as non-intrusiveness, no pressure drop, no moving parts, easy installation and minimum maintenance, just to name a few.

Depending on the measurement technology and transducer type, ultrasonic flowmeters come in several different types, such as clamp-on, handheld, insertion-wetted, flow-cell/spool-piece type, wall-mount/fixed-installation flowmeter, etc. Please click here to learn how to select a ultrasonic flowmeter which best suits your applications. Feel free to contact us if you have any questions. We are more than happy to help you select the right product.

The most widely used ultrasonic flowmeters are based on the transit-time principle. As shown in the figure, a typical transit-time ultrasonic flowmeter system utilizes two transducers that function as both ultrasonic transmitter and receiver. The flowmeter operates by alternately transmitting and receiving a burst of sound energy between the two transducers and measuring the transit time that it takes for sound to travel between the two transducers. The difference in the transit time measured is directly and exactly related to the velocity of the liquid in the pipe. For detailed explanations, please click here.

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