To truly understand what your process is doing, you must understand how you are measuring its performance.
To level the field, Chemical Processing has put together an eHandbook. It includes insight on:
- Grasp the Nuances of Level Measurement -- The differences in the way devices work can profoundly affect readings
- Optimize Your Process with Interface Level Measurement -- Monitoring vessels with immiscible liquids pose numerous challenges
- Tune In to 80 GHz Radar -- The higher frequency offers improved sensitivity and non-contact measurement in tight spaces.
Getting pressure sensors to last in the corrosive, volatile, and hazardous environments typically found in the chemical industry is a challenge. This paper focuses on improvements in pressure technology, specifically ceramic cells and other safety features that make today’s pressure sensors ideal for a broad range of applications.06/19/2019
Flare Quantitative Risk Analysis (QRA) is a systematic approach to determine the adequacy of a flare header and can be applied to provide a more realistic assessment of the risk associated with vessel accumulation due to common mode scenarios, in accordance with American Petroleum Institute (API) Standard 521. The QRA process takes the results of a traditional flare study and adds QRA inputs. These include the frequencies of the common mode scenarios, and the effects of instrumentation, operator intervention, and other layers of protection that tend to reduce the severity of the common mode scenario. The process generates a system risk profile, such as an accumulation versus frequency relationship for each vessel discharging to the relief header, which in turn can provide an estimate of the risk of catastrophic loss of containment associated with the relief header system. Flare QRA may reduce costs associated with the need to retrofit flare headers or construct new ones.
Experience has shown there are several challenges when performing QRA, including (a) how the system level risk is defined, (b) verification of reliability data used as QRA inputs, and (c) how considering only individual equipment may skew the view of resulting risk. This paper discusses these challenges, as well as what results can be expected from Flare QRA and what issues (e.g., flare tip) are not addressed through this analysis process.06/13/2019
Knowing your options when selecting the appropriate flow meter technology to measure natural gas, water and steam in power generation in boiler applications is critical for improving energy efficiency. In Sierra’s new white paper, discover which flow meter technologies provide the most accurate flow measurement data so you can optimize your boiler efficiency and energy production.05/29/2019
There is a lot of confusion around Safety Instrumented Systems (SIS) and the associated protection layers. While some may claim that “IEC 61508 certified equipment” is the way to go, others defend the concept of using field data collection and analysis of previously used general purposes instrumentation as the way to select appropriated instruments.
This white paper addresses the controversy surrounding discussions about determining the equipment to use in safety instrumented systems (SIS) and the rules for maintaining them.02/27/2019
People have been using various devices to measure level since about 3000 BC. The first historical references to a measuring device were dipsticks or staff gauges used to indicate the amount of water stored in reservoirs for farming. Next came crude float-type devices to indicate the height of drinking water reserves in underground cisterns or storage caverns.
Modern instrumentation uses more than 20 different technologies to satisfy the ever-growing requirements for level measurement in a wide variety of applications. Some instruments measure level directly, while others measure some other variable that is related to level.
To help you do your level best, Chemical Processing has put together an eHandbook. It includes insight on:
- Get To The Bottom Of Level Limitations – Positioning the lowest tap for a measurement demands care
- Consider FMCW Radar For Level Measurement – Technology helps plant continuously monitor inventory in dust-prone environment.
- 3D Level Sensors Help Address Storage Challenges – Technology and software advances provide greater visibility into a vessel’s inventory.
Sometimes using a radar sensor for liquid level measurement is child’s play. Sometimes. But not always. This paper covers a few challenging applications that prove through-air radar can reliably measure some of the toughest media and vessels to benefit the user.07/17/2018
Flow meters ensure accurate flow rate measurement for industrial applications. Choosing the right one ensures optimum results. Understanding factors such as flow, operating environment and performance are important when selecting a flow. A basic understanding of their differences and advantages also helps in choosing the right technology.11/07/2017
Are you wasting money by following external weighing standards? Optimize your process tolerances for increased profitability.
External weighing standards may fulfill legal regulations, but these tolerances may not make sense for your process. With METTLER TOLEDO's exclusive Accuracy Calibration Certificate (ACC) with Good Weighing Practice, you can link your weighing equipment to tolerances that are specific to your unique process, allowing you to:
- Optimize product quality and consistency
- Document that you are weighing in the safe weighing range
- Assure accuracy of your results
- Decrease costs and increase profits
Achieving blend uniformity is like trying to catch a leprechaun while riding a unicorn. Ingredient characteristics, blend hold times and mixing equipment all affect final quality. In fluid handling, what was once simple with universally standard impellers operating in standard vessels with standardized vessel internals has morphed into more individualized solutions. When it comes to solids, no two powders are alike – ever.
To assist your mixing, we’ve put together another Chemical Processing eHandbook. It includes insight on:
• CFD Stirs Up Mixing -- Progress in simulation provides improved mixer performance
• Carefully Evaluate Blending Requirements -- When choosing a mixer, consider these four key components that can lead to improved mixing
• Industrial Mixing Technology Challenges Require New Approach --Individually adapted mixing systems improve productivity and reduce costs
• Aim for Blend Uniformity -- Ingredient characteristics, blend hold times and mixing equipment all affect final quality08/08/2017
Weighing is just one step in your chemical production or laboratory process, but it can have a big impact on the outcome and quality of your final product. Weighing within the "Safe Range" ensures your results are right the first time.
Download the guide and learn about these key weighing process concepts which will help to ensure optimal production quality:
- Determining "acceptable" product quality using your process tolerances
- What is the safe weighing range and why is it so important?
- Absolute and relative measurement uncertainty
- Maintaining accurate weighing results from start to finish
Loss of level control has contributed to significant industrial incidents that have caused catastrophic results and numerous fatalities. It is imperative that you do not underestimate the risk of overfilling and that you consider all factors involved in proper level oversight. Do you know the “Golden Rule” for nozzle placement for level measurements? Have you heard of the seven simple steps that can provide proper protection? Our latest eHandbook addresses these issues and more.
To help stay level, we’ve put together another Chemical Processing eHandbook. It includes advice on:
• Properly Measure Liquid/Liquid Interfaces -- Follow a simple rule for location of level gauge nozzles
• Don’t Underestimate Overfilling’s Risk -- High level can pose serious hazards but seven simple steps can prevent them
• Select the Correct Non-Contact Sensor -- 3D, radar and laser scanners all provide continuous level measurement but suit different applications.
• Increase Ultrasonic Sensor Reliability -- Familiarity with application environments, transducers and product design can help inform purchasing decisions07/19/2017
Are you challenged by level measurement issues? Are you looking for more information on control and performance?
This Chemical Processing eHandbook takes a look at how chemicals manufacturers are finding level measurement solutions. Download this Chemical Processing eHandbook and gain access to these articles:
- Neglect Level Control at Your Peril: This first article in a four-part series examines reset mode tuning issues.
- Be Levelheaded About Surge-Tank Control: Vessels used to smooth out flow pose special tuning issues.
- Understand Ultrasonic Sensor Performance: Frequency, beam patterns and a target’s reflection characteristics all play a role.
- Get Data Where and When You Need It: Advances in level sensor technology help to improve inventory management.
Failure of a pressure instrument due to corrosion can lead to the expulsion of volatile liquids and gases into the surrounding environment. Understanding the causes of corrosion and preventative measures is crucial to operators. To help counter this threat, valuable information is available from dedicated organizations. Learn about these resources and gain the insight you’ll need to protect your people, processes and profits. Download now.10/13/2015
Level measurement, which is the detection of the phase split between vapor/liquid, liquid/liquid, vapor/solid and even liquid/solid, is a key parameter in the operation and control of modern industrial processes. A reliable outcome depends on the phase conditions being relatively consistent under all process conditions. Unfortunately, the importance of level control isn’t always understood. In this Chemical Processing Level Instrumentation eHandbook, we discuss best practices for level management including:
- Interpret Level Readings Right – how the type of instrument can make a big difference in deciphering measurements
- Choose the Correct Level Sensor – key considerations and questions for identifying the most appropriate choice
- Customize Your Level Detection – a myriad of options help you achieve optimal level indicator performance
Determining what plastic tubing is best for an application can be a challenge. This report includes topics such as ingredients, temperatures, pressure and vacuum requirements, and flexibility to assist engineers and buyers with tubing and hose selection. Helps avoid costly purchasing errors.04/14/2015
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