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Quality Digest


AW-Lake Offers Portable Flow Meter

On-demand pipe flow measurement, no process interruptions

Published: Wednesday, August 3, 2022 - 11:59

(AW-Lake: Oak Creek, WI) -- AW-Lake offers a new portable transit time ultrasonic flow meter in addition to the full-size, clamp-on version that provides noncontacting flow measurement for the most challenging industrial environments with minimal installation complexity and costs.  The new portable ultrasonic meter can be easily deployed to measure flow on demand without difficult installations or process interruptions.

The hand-held unit is encased in a rugged IP67 housing and works with the same three interchangeable transducers as the full-sized meter, which makes it suitable for measurements on a wide range of metal and plastic pipe materials from .5-in. to 48-in. diameter. A simple menu enables fast and easy programming of pipe diameter, pipe material, liquid types, and measurement units. In addition to providing a standard 4–20mA/0-5V analog output, optional Modbus RTU and HART communications provide instantaneous flow rate, volume, total, run hours, and diagnostic information.

An intuitive on-screen user interface with a data logger enables operators to view flow reports or download logs for use in other programs. Data management storage is 12.5 million data points with logger software for data viewing and reporting. Using an integrated USB-C port, the PTFM 6.1 expands its input and output capability to meet future requirements without replacing the whole meter.

The flow meters use the transit time ultrasonic principle of measurement, which works by measuring the flight difference for ultrasonic sound pulses transmitted from one transducer to another. The time between transmitted and received signals is precisely measured by the flow meters. Both ultrasonic flow meters are ideal for measuring the flow rate of clean, non-aerated fluids in full pipes such as water, chemicals, and fuel oils, with highly accurate and reliable flow measurement. 

See more information on AW-Lake’s new portable ultrasonic flow meter online, call (800) 850-6110, or email mreiff@aw-lake.com.


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For 40 years Quality Digest has been the go-to source for all things quality. Our newsletter, Quality Digest, shares expert commentary and relevant industry resources to assist our readers in their quest for continuous improvement. Our website includes every column and article from the newsletter since May 2009 as well as back issues of Quality Digest magazine to August 1995. We are committed to promoting a view wherein quality is not a niche, but an integral part of every phase of manufacturing and services.