Flame monitor SIL 3 approved

May 2010 Pressure Measurement & Control

IEC 61508 defines the standard for safety instrumented systems (SIS) and categorises them into safety integrity levels (SIL 1 to SIL 4). Afriso has evaluated all series DMU piezo-resistive pressure transducers relevant for the process industry according to IEC 61508 (basic) and IEC 61511 (process industry).

Two different measuring principles are used to monitor relative and absolute pressure. The robust, ceramic thick-film sensors of series DMU 01 allow for pressure measurement of almost all gases and liquids that are not aggressive to the FKM seal used in the pressure channel. This aluminium oxide sensor is also available in a flush mounting version for abrasive media such as bulk solids. The oil-immersed silicon measuring cells of series DMU 03 and DMU 04 are adapted without seals to the front-mounting process connections. The DMU 08 transducer with the same measuring principle is used for hydrostatic level measurement.

All DMU pressure transducers were rated SIL 2. As a result of the evaluation, these sensor systems can be used in potentially explosive areas with measuring ranges from 40 mbar to 600 bar and vacuum. The new SIL pressure transducers are used, for example, in biotechnology, chemical and gas applications, plant engineering, the semiconductor industry and process technology applications.

Further reading:

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A water treatment system for a major metropolitan area in the Midwestern United States demands careful monitoring and management of processes across its sprawling network. Choosing VEGA for its process automation needs meant more than just obtaining precise and reliable pressure sensors.

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Pressure and temperature gauges are vital instruments in various industries. However, they are susceptible to failures that can compromise their accuracy and reliability. When these gauges fail, the consequences can be severe.

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Brewing beer is a complex process that requires utmost precision in every step. To ensure precision, it is crucial to measure and control the pressure and point levels in the wort kettle and hops dissolver. Using VEGA instrumentation can offer numerous benefits to breweries.

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Greener mining through water management strategies
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Pressure sensors for hydrogen applications
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A new approach to milk processing
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Ensuring the quality and safety of milk throughout the production process is of the utmost importance in the dairy industry. Process instrumentation plays a vital role in this stage by providing accurate measurements of level, pressure and point level to guarantee optimal storage conditions.

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OEM high-pressure transducer with maximum long-term stability
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Instrotech is offering KELLER 10LHP, the flagship OEM pressure transducer in the KELLER product portfolio, which exemplifies the highest standards.

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Sensor technology for cartonboard machine for paper and packaging
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Paper and packaging specialist, LEIPA undertook a comprehensive modernisation project, combining three stock preparation lines into one, and making investments in new plant components and extensive automation technology. Because of the good experiences the company had already had with VEGA sensors, those responsible for planning and maintenance decided in favour of the VEGABAR 82 pressure transmitter as the standard instrument for level and pressure measurement in the new stock preparation system.

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Pressure measurement without risk of contamination
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Injectables are among the most sensitive products in the pharmaceutical industry. Sterility is essential during production. For this reason, a manufacturer of biopharmaceuticals decided to implement the pressure monitoring of its processes with hygienic instruments from WIKA.

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Pressure monitoring for oil and water tempering machines
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Temperature plays a significant role in many manufacturing processes. In such cases, a tempering machine is used to maintain the manufacturing process at the desired temperature. Keller supplied PR-21Y piezoresistive pressure transmitters to a client specialising in developing and producing oil and water tempering machines.

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