Siemens - Process Instrumentation and Analytics

Siemens offers the chemical industry a complete scope of solutions for process instrumentation and analytics. Our products are used in different areas of basic, fine and special chemistry as well as petrochemistry and have been proved and tested in these areas over many years. Together with our customers we help to solve the optimal measurement task and offer a comprehensive range of products and services that are specially geared to the requirements of the chemical industry. Our instruments are designed for the rough everyday usage in the industry and have corresponding approvals like ATEX or SIL certificates.

As well as process controllers, process recorders, process protection, weighing and batching systems and SIMATIC PDM software for controlling all instruments (Siemens and others), Siemens produces the following process instruments and analytics for the chemicals industry:

• Field Measuring Instruments: level measuring instruments; flow measuring instruments; pressure measuring instruments; temperature measuring instruments; positioners
• Analytic Products: gas analyzers; gas chromatographs; liquid analyzers; process spectrometers
• Custom Solutions: engineering, designing, supplying, installing and commissioning of complete measurement solutions; analyzer systems for custom solutions, from the sampling point to sample preparation to complete analyzer cabinets

FLOWMETERS

SITRANS F series flowmeters are suitable for all media. They offer highly accurate and reliable measurements of flow rates for liquids of various consistencies, gases and vapors using electromagnetic, ultrasonic or mechanical methods or the Coriolis mass flow principle.

PRESSURE MEASURING INSTRUMENTS

SITRANS P is a complete range of measuring instruments for measuring relative, differential and absolute pressure. In addition to high measuring accuracy and a robust design, the modular system has a persuasive ease of use and functionality and a perfect safety concept. A proven program for any application.

LEVEL MEASUREMENT INSTRUMENTS

Siemens level measurement instruments serve the chemical industries worldwide with point level detection (ultrasonic and capacitance) and continuous level measurement (radar, ultrasonic, capacitance and hydrostatic).

• SITRANS LR 200: 2-wire, loop-powered pulse radar instrument for liquid bulk storage applications
• SITRANS LR 300: 4-wire pulse radar for liquids and slurries in process vessels and extreme or hazardous process conditions
• SITRANS LR 400: powerful, long-range FMCW radar instrument for solids and liquids storage; ideal for extreme dust or low dielectric liquids

TEMPERATURE MEASUREMENT INSTRUMENTS

You can choose among a wide range of these products:

• SITRANS TW Control-Room Instrument: universal transmitter, HART communications, programmable via PC with SIMATIC PDM
• SITRANS TF Field Instrument: for field installation, IP65 protection, optional programmable digital readout
• SITRANS TK Head-mounted Transmitter: for head installation, programmable with SIMATIC PDM, HART protocol and SIPROM TK
• SITRANS T3K PA Head-mounted Transmitter: PROFIBUS PA communications, programmable with SIMATIC PDM

All transmitters are available as intrinsically safe versions as well. SITRANS TF is also offered with Ex d certification

GAS ANALYZERS

The operation of the analyzers is menu-driven and in accordance with the NAMUR recommendations. All analyzers lend themselves to easy integration into the SIMATIC Totally Integrated Automation concept and to parameterization using the SIMATIC PDM software via integral RS-485 and PROFIBUS DP and PA interfaces.

GAS CHROMATOGRAPHS

MAXUM edition II is very well suited for use in rough industrial environments and performs a wide range of applications in the chemical and petrochemical industries and in refineries. A selection of columns and detectors permits highly selective and sensitive analysis of a very wide range of process components. Its core arguments make the MAXUM edition II very appealing. For example:

• Flexible oven concept, temperature programmable and energy-saving single or dual oven configurations
• Valveless live sample injection and column switching
• Parallel chromatography allows the breaking of measuring results from single-train chromatograph analysis into multiple single trains.
• Open network with TCP/IP and Ethernet for communication with PCs, other chromatographs or a DCS

POSITIONERS

The SIPART PS2 positioner is available in different models. Control is via 4mA to 20mA (standard) and HART signal (optional) PROFIBUS PA communication interface. For hazardous or non-hazardous applications, it is available either as an intrinsically-safe device (EEx ia/ib) or in a flame-proof casing (EEx d).

• In a plastic or metal housing
• With optional plug-in modules for alarms, featuring self-adjusting zero and span position feedback and external position