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The new Sitrans FS230 clamp- on ultrasonic fl ow system

SIMPLIFYING flow systems

Exploring the benefits of the next generation of clamp-on flowmeters C

lamp-on ultrasonic fl owmeters are among the most cost-eff ective technologies for measuring the volumetric

fl ow rate of liquids. As their name suggests, clamp-on sensors are mounted to the exterior of a pipe, eliminating the need for line alterations or process shutdown prior to installation. Their non-intrusive nature also keeps maintenance requirements to an absolute minimum since the sensors never come into contact with the fl uid. Yet despite their low cost of

ownership and increasingly advanced capabilities, clamp-on fl owmeters have been slow to gain acceptance from engineers and plant managers as a viable alternative to more traditional methods of fl ow measurement. Many end users are reluctant to switch because they perceive clamp-on meters as overly complicated to order and install. To bridge this gap and successfully

integrate clamp-on technology into a broader segment of the process industries, instrumentation suppliers must build a higher level of user- friendliness into the next generation of clamp-on ultrasonic fl ow systems.


A DEMANDING TECHNOLOGY In general, getting a clamp-on meter up and running is an intricate process that calls for more in-depth technical knowledge than most other types of fl owmeters. But why is this the case? Firstly, clamp-on sensors are available

in four diff erent models – universal, high-precision, high-temperature and Doppler – to address a wide range of media, pipe materials and operating environments. Most suppliers also off er multiple sizes of each model to ensure the best possible match between the frequency of the sensor and that of the pipe wall. To order a fl ow system, the customer must know how to determine the correct model and size for their specifi c application as well as how to select the appropriate mounting accessories (e.g. frames and tracks) for the chosen sensors. Secondly, the sensors must be

installed at particular locations on the pipe and precisely confi gured to achieve optimal measurement performance. Most clamp-on fl owmeters off er some form of electronic assistance to properly place the sensors and prepare them for operation, but these functions

usually depend on the end user to input application data using complex, non-intuitive menu interfaces. These same convoluted menus must also be navigated to adjust system parameters for fl ow anomalies. Simplifying these processes is one

of the guiding principles behind the new Sitrans FS230 clamp-on ultrasonic fl ow system from Siemens. The system, which combines a Sitrans FST030 digital transmitter with Sitrans FSS200 external sensors, has been engineered to streamline every aspect of the user experience. Until now, knowing the proper sensor

model, size and associated hardware has almost always been a prerequisite for ordering a clamp-on ultrasonic fl owmeter from any supplier. If the customer does not have access to this information, they must rely on a sales representative or service technician familiar with clamp-on technology for support. The Sitrans FS230 sets out to change

this landscape. The meter can be ordered via the PIA Life Cycle Portal, a web-based application for product engineering, selection and confi guration. In lieu of prompting the customer to

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