Paths for Optimizing Chemical Industry Processes

Ingold brand InPro pH probes
Courtesy Mettler Toledo

The success of an industrial process hinges upon simultaneously or continuously maintaining an array of variables within a comparatively narrow operating band. Operators rely heavily upon sensing and measuring equipment to provide critical information about process operation that cannot be gathered by the human senses.

There is a robust section of the measurement and control equipment industry devoted to analytical measurements for chemical processes. Mettler Toledo, with their Ingold brand of analytical instrumentation, has been a key player in the process analytical field for many years. Through continuous research and development, the company has innovated products that provide greater performance and operational benefits to their industrial process control customers.

The piece included below provides a useful overview of the company's analytical and measurement capabilities, with an emphasis on how the products are employed in various industries. Modern technology is incorporated to improve product life cycle performance and reduce maintenance burden.

See for yourself with a browse through the document included below. More information is available on products and applications from a specialist, with whom you should share your analytical process challenges. The most effective solutions will come from collaboration between process operators and analytical equipment specialists.

Optimizing chemcial industry processes from Alliance Technical Sales, Inc.

When Magnetic Level Indicators May Be Best Choice for Tank Liquid Level Measurement

Magnetic level gauge configured for sanitary installation
Courtesy Jogler

Fluid process control operations often involve vessel or tank storage of liquids. Continuous and accurate indication of the liquid level within the tank is an essential data point for process control decision making and safety. Several methods and instrument types are available for tank level measurement, each with its own set of attributes that may be advantageous for a particular installation. Selection criteria for a tank liquid level indicator may include:

• Direct or indirect measurement of level
• Level measurement accuracy and reliability
• Tank shape, regular or irregular
• Media compatibility with measurement device
• Requirements for maintenance or calibration
• Compatibility with process temperature and pressure range
• Local display and visibility
• Level indication signal type and transmission
• Level alarm switches or other indicators

The selection of a magnetic level indicator, also referred to as a magnetic level gauge, for the project will likely be based upon at least one of the instrument's strengths. Magnetic level gauges have a host of potentially positive features for level indication.

• Continuous level measurement
• Operable without electric power
• Direct visual tank fluid level indication, regardless of tank shape or profile.
• Wide range of operating temperature and pressure
• Breakage resistant construction
• Range of construction materials available to accommodate corrosive media
• Measuring indicators, switches, and transmitters mounted externally, without contacting the medium being measured.
• Low maintenance operation.
• Readable level indication from greater distance than glass sight gauges.
• Applicable to large fluid level ranges with a single instrument.

Magnetic level indicators have a strong position in the tank liquid level measurement field and should be considered as a candidate for fulfilling those application requirements. There are many options available to customize the level indicator for each specific application. I have included a technical data sheet from Jogler, a manufacturer of level instrumentation, for more detail. Share your application challenges with a sales engineer that specializes in level measurement. Combining your process knowledge with their product application expertise will yield positive solutions.

Jogler magnetic level gauge brochure from Alliance Technical Sales, Inc.

Humidity and Temperature Transmitters for Demanding Humidity Measurement

HMT330 Series Humidity and Temperature Transmitters
Courtesy Vaisala

Humidity, the amount of water vapor in the atmosphere or a gas, can be an important measurable attribute of an industrial process. Many are aware of the measurement of relative humidity in HVAC applications and its impact on human comfort in occupied spaces, but the measurement of water vapor in air can be a required measuring point in many other processes that pose far greater challenge.

In addition to common wall or duct mounting applications, where the instrument is easily inserted or placed into the environment to be measured, there are applications that call for special adaptations to the instrument or sensing probe.

• High pressure
• Vacuum
• High temperature
• High humidity
• Pressurized pipelines
• Presence of chemical contaminants

Meeting the full range of industrial process control operations requires stable measurements and the choice of multiple configurations and options to customize the instrument to the process demands. Here are some features worth considering.

• Multiple variants to match the basic process requirement
• Full 0 to 100% humidity measurement range up to +180°C (+356°F)
• PT 100 RTD for accurate temperature measurement
• Pressure tolerance up to 100 bar
• Superior sensor accuracy and stability
• Graphic display and keypad for local operation
• Multilingual user interface
• Good chemical tolerance
• Corrosion resistant housing
• Delivered with multi-point NIST traceable calibration certificate
• Analog outputs, RS232/485, WLAN/LAN
• MODBUS protocol support (RTU/TCP)
• Long term manufacturer warranty

While not all processes may require, or benefit from, the inclusion of all the listed features and capabilities, reviewing what is available and considering which features may provide better operability in your process can be beneficial. I have included a data sheet below that illustrates the HMT330 Series of humidity and temperature transmitters from Vaisala. Share your humidity measurement challenges with a product specialist. Combining your process knowledge with their product application expertise will produce solid solutions.

Vaisala HMT330 Series IndustrialTemperature and Humidity Transmitters from Alliance Technical Sales, Inc.

Magnetic Level Gauges Superior to Glass Level Indicators

Magnetic Level Gauge
(courtesy of Jogler)

Magnetic level gauges isolate of the process inside of a sealed piping column, thus eliminating the possibility of leaking seals and cloudy or broken site glass. Magnetic level gauges (gages) allow for easy cleaning access and a wide variety of mounting styles and process connections. They also provide improved visibility with highly visible flippers.

Magnetic level gauges are designed with a float in a sealed tube, embedded with permanent magnets. As process level changes, the float rises and falls, and the magnets in the float couple with an external indicator. The indicator is completely isolated from the process.

The following video provides a brief overview of Jogler level products. Jogger is a Baton Rouge, Louisiana manufacturer of high quality magnetic level gauges, magnetostrictive transmitters, direct-reading level gauges with armored shield, sight flow indicators, specific gravity analyzers, point level switches and other accessories. Jogler products are custom designed to meet customer specifications and manufactured to applicable ASME B31.1 and B31.3 code requirements to ensure reliable operation and maintenance free design.

Video on Bubble Noise in Dissolved Oxygen Signals

Modern Brewery

Process engineers and operators continually seek faster and more accurate means of measuring variables within the process. Greater currency and accuracy of information can lead to better control and decision making, with a positive impact on efficiency and safety.

Measurement of specific dissolved gases within a liquid plays an important part in many processes in the biopharmaceutical, food, and beverage industries. Mettler Toledo, through their Ingold brand, has developed a solution to a common problem associated with measuring dissolved oxygen. Provided below is a video which illustrates how bubbles can impact the sensor reading, plus Mettler Toledo's solution to the problem. There is also an application note provided below the video which further explains the problem and solution.

Share your process measurement and control challenges with product specialists. Combine your process experience with their product application expertise to devise the best solutions.

Eliminating Bubble Noise in Dissolved Oxygen Measurements from Alliance Technical Sales, Inc.

Pharmaceutical Industry Case Study: Extend Bioreactor Useful Life With Automation Refurbishing

Fermenter/Bioreactor Control System
Courtesy ILS Automation

Bioreactors can have their useful working life extended, even made more productive, through the replacement of the automation and control system. Modern measurement and control gear can provide utility that may not have been available at the time of original manufacture. With vessel, support structure, and piping in good condition, a system may be a viable candidate for refurbishing to bring about upgraded performance or avoid the purchase of an entire new system. ILS Automation is a specialist in the realm of refurbishing bioreactor systems.

The company has several drop-in replacement control units for smaller bioreactors, and also provides turn-key solutions for larger systems. The ILS expertise also extends into other industrial process control and automation fields in the biotechnology, chemical, oil and gas industries.

A bioreactor control system update case study is included below. More product, service, and capabilities information is available from Alliance Technical Sales.

Pharmaceutical Manufacturing Case Study: Refurbish Old Bioreactor from Alliance Technical Sales, Inc.

Magnetostrictive Level Transmitter for Process Measurement & Control

Magnetostrictive
Liquid Level
Transmitter
(Jogler)

Physical properties of certain materials can be applied using ingenuity and creativity to create useful appliances. Magnetostriction, a physical property of ferromagnetic materials, produces a change in shape or dimension in the subject material when it is magnetized. This basic principle is integrated into a liquid level transmitter by extending a sensing wire along the interior length of a tube immersed in a process tank or other vessel containing the liquid to be measured. The transmitter pulses the sensing wire with an electrical current, creating an electromagnetic field. A magnetic float, travelling along the outside of the sensing tube, rises and falls as the liquid level in the tank changes. As the float moves along the length of the sensing tube, it creates a torsional stress in the sensing wire, starting at the position of the float, which matches the level of liquid in the tank. A sensing element converts the torsional stress in the wire to an electrical pulse. The transmitter measures the time differential between the initial pulse it sent down the sensor wire and the pulse resulting from the torsional stress and then calculates the position of the float and the liquid level.

These devices are very accurate and operate on a standard 2-wire loop. There are numerous options and variants that allow configuration for each application.

More information is included in the data sheet below. Your best source for current product and application information is a product specialist. Combining your process knowledge with their application expertise will produce the best outcomes.

Magnetostrictive Liquid Level Transmitter for Process Measurement and Control from Alliance Technical Sales, Inc.