Nuremberg, 26.04.2005

SITRANS AS 100 Acoustic Sensor Gains ATEX Approval

Siemens SITRANS AS 100 Acoustic Sensor has received European ATEX II 3D approval. This approval certifies this device for use in hazardous areas and conditions where explosive dust may be present. SITRANS AS 100 is a high frequency acoustic sensor for continuous solids flow detection. It detects changes in high frequency, structure borne, sound waves from equipment and materials in motion. It reacts instantly to changes in solids flow to warn of blockages, product absence, or equipment failure such as burst filter bags. The 0-10 V DC analog output works with the SITRANS CU 02 controller or the customer's PLC to alert to conditions of high flow, low flow, or no flow. Changes in flow are immediately detected enabling operators to take early preventative action and avoid costly damage or unscheduled downtime.

Easily mounted on the outside of chutes, pipes, and fan housings, SITRANS AS 100 is ideal for production monitoring of fine powders to large granulars in hazardous or hygienic environments. Common applications also include pneumatic conveyors or aerated gravity flow systems. With no moving parts and a stainless steel housing sealed against dust and moisture, this non-invasive unit requires little or no maintenance.

Operators can maintain system efficiency because the SITRANS AS 100 provides them with constant data. SITRANS AS 100 is a cost-effective and reliable solution for process protection.


Siemens Milltronics Process Instruments Inc. is a Siemens company that designs and manufactures sophisticated measurement instruments used by the water and wastewater, aggregate, cement, mining, chemical, milling, food and other process industries. Principal product lines include level measurement, dry solids flow measurement, and process protection devices. Products are available worldwide through a network of sales representatives and distributors. The company is based in Peterborough, Ontario, where it employs 300 people.

Siemens AG (NYSE: SI), headquartered in Munich, is a leading global electronics and engineering company, providing innovations in health care, information and communication, energy and power, industry and automation, transportation and lighting. Siemens and its subsidiaries employ 430,000 people in 192 countries and reported worldwide sales of € 75.2 billion in fiscal 2004. In Canada, Siemens is a multi-billion dollar company headquartered in Mississauga, Ontario, with more than 6,600 employees located in 73 offices and eight manufacturing facilities.


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Rob Niezen
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Siemens Milltronics Process Instruments Inc.
(705) 740 - 7054

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