Electricity + Control September 2017

round up

SENSORS. SWITCHES + TRANSDUCERS

Compact stainless-steel sensor for flexible flow measurement Selecting the right method and appropriate device for flow measurement generally in- volves a time-consuming and resource-in- tensive consideration of the advantages and disadvantages of the different systems and measuring methods. Particularly in the food and beverage industry, which relies on high process reliability and perfect hygiene Time-of-flight The DOSIC ultrasonic sensor operates ac- cording to the concept of time-of-flight differ- ence: If the ultrasonic signal is sent against the flow direction, it requires a longer transit time than the signal sent in the direction of the flow. The transit-time difference between the two ultrasonic signals is directly propor-

standards, this means that there are often a large number of different measuring devices for the respective production areas. Therefore, the in- dustry welcomes instru-

tional to the mean flow velocity. The flow vol- ume per unit of time is the result of the mean flow velocity multiplied by the pipe cross-section. With re-

The IO-Link reduces cabling and also enables complete control and monitoring of the sensor in Industry 4.0 machine environments.

ments that reliably monitor the flow of drink- ing chocolate, beer, olive oil, demineralised water, or milk, and which are just as precise in measuring the flow of cleaning agents in CIP and SIP plants or cooling water in cooling circuits. They reduce complexity and increase productivity. This variety of applications is possible thanks to sophisticated ultrasonic technology.

gard to reliability and precision in transit-time difference measurements, the DOSIC sensor provides an alternative to Coriolis mass flow- meters, which usually entail high investment costs. The sensor can detect a wide range of challenging liquids and media for bever- age and food production irrespective of their properties.

Durable and reliable in hygien- ic conditions The rugged and compact model combined with a hygienic design ensures highly reliable measure- ment results. The absence of moving parts in the sensor elim- inates potential contamination risks in the demanding hygienic environments of the food indus- try. In addition, the sensor has a straight, seal-free, and self-emp- tying measuring tube made of high-quality stainless steel (316L with Ra ≤ 0,8). The high-quality stainless-steel housing also pro- vides the necessary ruggedness and resistance. It therefore goes without saying that the sensor has EHEDG certification and demonstrates FDA conformity. Since there is no contact be- tween the sensor and the flow- ing media, and the flow volume is determined in a non-contact

The non-contact DOSIC flow sensor detects the flow volume of conductive and non-conductive liquids based on ultrasonic technology.

44 Electricity + Control

SEPTEMBER 2017