Showing posts with label Yokogawa. Show all posts
Showing posts with label Yokogawa. Show all posts

Wednesday, December 20, 2017

Yokogawa Pressure eBook - A Basic Guide to Understanding Pressure

The impact of pressure on industrial processes would be difficult to understate. Pressure is an element of process control that can affect performance and safety. Understanding pressure concepts and how to effectively measure pressure within a process are key to any operator's success.

Yokogawa, a globally recognized leader in process measurement and control, has made available a handbook on pressure that covers a range of useful topics. The content starts with the very basic concepts and moves quickly to practical subjects related to process measurement and control.

The handbook will prove useful to readers at all levels of expertise. Share your process measurement challenges with application specialists, combining your process knowledge with their product application expertise to develop effective solutions.

Download your own copy of the Pressure Handbook here, or view online below.

Tuesday, September 12, 2017

ADMAG TI Series AXW Magnetic Flowmeter Maintenance Manual

ADMAG TI Series AXW Magnetic Flowmeter
ADMAG AXW Magnetic Flowmeter
(Yokogawa)
The ADMAG AXW™ series of magnetic flow meters has been developed based on Yokogawa's decades-long experience in Magnetic Flowmeters. The AXW series continues the tradition of high quality and reliability that has become synonymous with the Yokogawa name.

The AXW series is ideal for industrial process lines, and water supply / sewage applications. With outstanding reliability and ease of operation, developed on decades of field-proven experience, the AXW will increase user benefits while reducing total cost of ownership.

Sizes are available from 500 to 1800 mm (20 to 72 inch.) with a wide liner selection such as PTFE, Natural hard rubber, Natural soft rubber, and Polyurethane rubber lining. Offering industry standard process connections such as ASME, AWWA, EN, JIS, and AS flange standards. A submersible version is also available.

This manual provides the basic guidelines for maintenance procedures of ADMAG TI (Total Insight) Series AXW magnetic  flowmeters.

In Virginia, contact Flow-Tech for any Yokogawa instrument requirement you may have. Call 804-752-3450 or visit http://www.flowtechonline.com.

Sunday, July 9, 2017

The Yokogawa TDLS8000 Tunable Diode Laser Spectrometer

TDLS8000
The Yokogawa TDLS8000
The Yokogawa TDLS8000 can quickly make in-situ measurements of gas concentrations in combustion and heating processes that are employed in the oil, petrochemical, electric power, iron and steel, and other industries.

Companies are always looking for ways to optimize processes by saving energy, reducing CO2 emissions, and improving safety and one way to do this is by optimizing the air-fuel ratio in the combustion process. To accomplish this, sensors are needed that can continuously monitor the concentration of O2 and CO+CH4 in the radiant section of fired heaters.

Product Features

  1. Highly reliable measurement - The TDLS8000's laser module includes a newly developed reference cell board that improves the reliability of absorption peak detection, which is an important step in the spectral area method. In addition, the receiving unit employs a new auto gain function that can automatically optimize detection sensitivity depending on the measurement object. By increasing the signal-to-noise ratio (S/N ratio), this improves the reliability of measurements taken in coal combustion and other processes where there is high particulate loading. Designed to meet the requirements for SIL2 certification (certification pending) defined by the International Electrotechnical Commission (IEC), the TDLS8000 will play a key support role in ensuring the safe operation of plants.
  2. Improved operability and maintenance efficiency - The TDLS8000 comes with a large 7.5-inch LCD touch screen that can display a greater variety of data. The touch screen replaces the push button interface used with preceding models, making the setting of parameters easier and more intuitive. The light source module containing the laser diode is fully sealed and damage resistant. To facilitate troubleshooting and reduce downtime, this module is able to store up to 50 days' worth of raw data that can be accessed anywhere in the world by, for example, a Yokogawa response center.
  3. Compact size - The redesigned TDLS8000 is just three-quarters the size and weight of the preceding model, allowing it to be installed in a greater variety of locations.

Friday, June 9, 2017

Yokogawa ROTAMASS "Total Insight" Line of Coriolis Flowmeters

ROTAMASS InsightIn the last decade, the use of Coriolis flow meters has been changing from general purpose to supporting your needs in specific applications.

While the technological complexity increased, the demand for simple operation and handling is also a rising requirement.

Yokogawa answers these needs by offering six dedicated product lines with two specialized transmitters allowing the highest flexibility - the ROTAMASS Total Insight.

Total Insight


The ROTAMASS philosophy gives Total Insight throughout the whole lifecycle.

To facilitate optimal processes and increase the efficiency of personnel, Yokogawa has placed a strong focus on simplifying fundamental operating concepts with Total Insight. The Total Insight concept is built in to the latest generation of Rotamass transmitters and provide enhanced settings for customized setups, pre-defined trend views, or multiple configuration sets for fast changeover in batch production are supported.

ROTAMASS NanoROTAMASS NANO - When every drop counts
The world's smallest dual bent tube Coriolis flow meter series for highly accurate measurement at lowest flows.
The dual tube design compensates for fluctuations of density, temperature, pressure and environment conditions. This provides a consistent repeatable and accurate measurement especially for small size Coriolis flow meters.
  • Typical Applications
    • Batching
    • Dosing
    • Blending
    • Chemical injection
    • Dosing systems
    • High pressure gases
    • Liquid and gas low flow measurement
    • Precision coatings
    • Metering pump control
    • Metrology
    • R&D laboratory
    • Vacuum thin film coating
ROTAMASS PrimeROTAMASS Prime - Versatile in applications
The favorably priced and versatile Coriolis flow meter with lowest pressure drop in the market. Ideal for a broad range of standard applications, this series is a flexible and cost effective solution for highly accurate flow and density measurements.
Features such as concentration measurement or the Tube Health Check function allow the meter to be adjusted to customer needs.
  • Typical Applications
    • Batching
    • Blending
    • Chemical recovery
    • Continuous reaction
    • In-line concentration and density measurement
    • Catalyst feed
    • Filling and dosing
    • Mass balance
    • Net oil computing
    • Palm oil
    • Process control
ROTAMASS SupremeROTAMASS Supreme - Experience meets innovation
The most accurate Coriolis flow meter with industry’s best zero stability.
The successful Rotamass series has been progressively developed and is also newly equipped with the latest technology. This meter delivers unsurpassed performance for demanding and critical applications with superior aeration handling and advanced diagnostic functionality.
  • Typical Applications
    • Batching
    • Burner control
    • Feed and product control
    • Filling and dosing
    • Gas void fraction
    • In-line concentration and density
    • Loss control
    • Material and mass balance
    • Net oil computing
    • Process control
    • Solvents
    • Water cut
ROTAMASS IntenseROTAMASS Intense - Safe under high pressure
The Coriolis meter with the most robust and durable design for precise measurement in high pressure applications.
Safety is always a concern and especially when operating at high pressures. Therefore, this series has been designed to meet the highest safety requirements. Combined with advanced diagnosis such as the “Total Health Check” function, operation is always under secure control.
  • Typical Applications
    • Chemical injection
    • Compressed gases
    • Fuels
    • Glycol TEG/MEG
    • High pressure gases
    • Hydraulic oil
    • Hydrocarbons
    • Liquified gases
    • Natural gas hydration
    • Offshore and onshore
    • Oil refinery processes
    • Solvents
ROTAMASS HygienicROTAMASS Hygienic - With pure dedication
Specifically designed and certified for food & beverage, biotechnology and pharmaceutical utility applications.
This series is the appropriate answer to the daily constraints of hygienic processes ensuring continuous product quality and minimizing losses. This is made easy by the provided multi-variable measurement and various dedicated features.
  • Typical Applications
    • Bioreactor feeds
    • Bottling
    • Carbonation of beverages
    • Deionized water
    • Fermentation
    • Juice processing
    • Molasses measurement
    • Online sugar concentration
    • Raw milk tanker unloading
    • Process water reclamation
    • Product quality control
    • Sugar industry
ROTAMASS GigaROTAMASS Giga - Big in performance
Delivering best in class accuracy and most flexible installation at high flow rates.
The unmatched accuracy at the low end of the measuring range offers maximum flexibility from engineering to final operation. This series unifies a long service life with low maintenance costs and reliable performance.
  • Typical Applications
    • Bitumen
    • Distribution networks
    • Drilling mud
    • LNG
    • Rail car loading
    • Ship loading
    • Truck loading
    • Tar
    • Offshore and onshore
    • Oil well cementing and hydrofracturing
Essential and Ultimate Transmitters

Future Ready. The ROTAMASS TI product family has a common and unified transmitter platform with two options that provide the highest flexibility and a tailor-made solution. The Essential transmitter is the cost effective solution for general purpose applications, and the Ultimate transmitter provides various additional features for best-in-class measurement.
Essential TransmitterEssential Transmitter
  • Wizard for easy setup and guidance through the main configuration
  • “Event Management” as unique and useful support to run the process effectively and safely
  • Data mobility provided by microSD card for easy transfer to other devices for fast setup or to pc for in-depth process analysis or remote service
  • Widest range of I/O combinations in the market for most flexible adjustment to the existing system periphery
  • Universal power supply to install the device anywhere in the world
  • HART communication
Ultamate TransmitterUltimate Transmitter
  • Patented “Tube Integrity” function and “TotalHealth Check” for inline meter verification without disturbing running measurements
  • “Features on demand” for easy expansion of special functions via software activation key
  • Batching function combined with multiple configuration sets to support fast changeover
  • “Dynamic Pressure Compensation” for consistently accurate and stable measurement even with significant fluctuations in operating pressures
  • Inline concentration measurement
  • Integrated net oil computing acc. API standard
For more information on ROTAMASS Total Insight in Virginia, visit http://www.flowtechonline.com or call 804-752-3450.

Thursday, March 30, 2017

Steam Boiler Optimization

Steam Boiler Optimization
The primary function of a utility boiler is to convert water into steam to be used by a steam turbine/ generator in producing electricity. The boiler consists of a furnace, where air and fuel are combined and burned to produce combustion gases, and a feedwater tube system, the contents of which are heated by these gases. The tubes are connected to the steam drum, where the generated water vapor is drawn. In larger utility boilers, if superheated steam (low vapor saturation) is to be generated, the steam through the drum is passed through superheated tubes, which are also exposed to combustion gases. Boiler drum pressures can reach 2800 psi with temperatures over 680°F. Small to intermediate size boilers can reach drum pressures between 800 and 900 psi at temperatures of only 520°F if superheated steam is desired. Small to intermediate size boilers are only being considered for this application note.

With oil‐burning and gas‐burning boiler efficiencies over 90%, power plants are examining all associated processes and controls for efficiency improvements. Between 1 and 3% of the gross work produced by a boiler is used to pump feedwater. One method of improving overall efficiency is by controlling feedwater pump speed to save on pump power.

Read the entire document below. Contact  Flow-Tech with any questions regarding boiler optimization. In Maryland call 410-666-3200. In Virginia call 804-752-3450. 

Tuesday, March 21, 2017

Industrial Temperature Control Basics

Process Controllers
Process Controllers used with thermocouples or RTDs
for temperature control (courtesy of Yokogawa)
The regulation of temperature is a common operation throughout many facets of modern life. Environmental control in commercial, industrial, and institutional buildings, even residential spaces, uses the regulation of temperature as the primary measure of successful operation. There are also countless applications for the control of temperature found throughout manufacturing, processing, and research. Everywhere that temperature needs to be regulated, a device or method is needed that will control the delivery of a heating or cooling means.

For industrial process applications, the temperature control function is found in two basic forms. It can reside as an operational feature within a programmable logic controller or other centralized process control device or system. Another form is a standalone process temperature controller, with self-contained input, output, processing, and user interface. Depending upon the needs of the application, one may have an advantage over the other. The evolution of both forms, integrated and standalone, has resulted in each offering consistently greater levels of functionality.

There are two basic means of temperature control, regardless of the actual device used. Open loop control delivers a predetermined amount of output action without regard to the process condition. Its simplicity makes open loop control economical. Best applications for this type of control action are processes that are well understood and that can tolerate a potentially wide variation in temperature. A change in the process condition will not be detected, or responded to, by open loop control. The second temperature control method, and the one most employed for industrial process control, is closed loop.

Closed loop control relies on an input that represents the process condition, an algorithm or internal mechanical means to produce an output action related to the process condition, and some type of output device that delivers the output action. Closed loop controllers require less process knowledge on the part of the operator than open loop to regulate temperature. The controllers rely on the internal processing and comparison of input (process temperature) to a setpoint value. The difference between the two is the deviation or error.  Generally, a greater error will produce a greater change in the output of the controller, delivering more heating or cooling to the process and driving the process temperature toward the setpoint.

The current product offering for standalone closed loop temperature controllers ranges from very simple on/off regulators to highly developed products with multiple inputs and outputs, as well as many auxiliary functions and communications. The range of product features almost assures a unit is available for every application. Evaluating the staggering range of products available and producing a good match between process requirements and product capabilities can be facilitated by reaching out to a process control products specialist. Combine your own process knowledge and experience with their product application expertise to develop effective solution options.

Wednesday, March 15, 2017

Combustion and Fired Heater E-Book

[All quoted passages in this article are taken from the Yokogawa e-book]

Yokogawa, globally recognized leader in a number of process control fields, has authored an e-book which provides useful insight into how operators of combustion based equipment and systems can improve efficiency and enhance safety by employing modern technology.

The Yokogawa e-book Combustion & Fired Heater Optimization offers "an analytical approach to improving safe & efficient operations" related to the use of combustion & fired heaters in the process industries. Through presenting an overview of combustion sources, such as furnaces and fired heaters, the book states that while "fired heaters pose a series of problems from safety risks to poor energy efficiency," those problems "represent an opportunity for improved safety, control, energy efficiency and environmental compliance." Fired heaters "account for 37% of the U.S. manufacturing energy end use." Tunable Diode Laser Spectrometer (TDLS) technology helps mitigate safety concerns by "measuring average gas concentrations across the high temperature radiant sections."

The book states that the four main concerns applicable to fired heaters are asset sustainability, inefficient operations, the operator skillset, and safety and compliance. Outdated diagnostics and controls have placed unnecessary stress on operator response, making sustainability of fired heaters difficult. The emissions of fired heaters are generally higher than designed, and can be coupled with control schemes for firing rates little changed over the past 40 years. Operators, generally, lack a clear understanding of design, and even engineering principles of heat transfer are not typically included in education related to fired heaters. Confounding the situation further, "many natural draft heaters do not meet this [safety regulation] guideline with existing instrumentation and control systems." These complications combine to form a noticeable problem Yokogawa's technology hopes to address. The company notes how the fired heater relies on natural draft instead of forced air, meaning the heaters "typically lack the degree of automation applied to other process units in the plant." Offering a full detail of both the control state of most fired heaters and their systems defines the process situation currently considered common in the field, while emphasizing high excess air as providing a "false sense of safety."

The proposed TDLS system allows for the measurement of "both the upper and lower conditions in a fired heater" by "simultaneously controlling the fuel and air supply based on fast sample intervals." Safer burner monitoring and heater efficiency results from the TDLS measurements of CO, CH4, and O2. The optimization of air flow control reduces "O2 concentration … from 6% to 2%" and increases the furnace's thermal efficiency. Combustion control is achieved by managing fuel flow and the arch draft. The TDLS integrated system works in tandem with already established logic solver systems in the plant. The TDLS technology works as a non-contacting measurement with "full diagnostic capability" and offers "distinct advantages over single point in situ analyzers" via reduction of false readings. Specific gas measurements, fast response time, optical measurement technology, and "high and variable light obstruction" are featured components of the TDLS system highlighted to show the technology's durability and flexibility. The longevity and reliability of the system is showcased by how the TDLS combustion management system has been operational in a major refinery since 2010. The percentage of excess O2 in sample fired heaters has decreased by 1% to 1.5%. Measurements by the TDLS system have been verified by other gas analyzers. The furnace conditions in the plant are more efficiently monitored and controlled. As a result, the furnace in the functional environment is "now near its optimum operating point, using minimum excess air."
Yokogawa presents a process-related problem, then details the key points of the problem while unpacking the causes. The e-book introduces Yokogawa's technology, explains the mechanics, and demonstrates how TDLS acts as a solution to the problem, supported by a tangible example. The book offers great insight for both the operational principles of fired heaters and a new technology designed to maximize efficiency in the control process.

The e-book can be downloaded here.  More detail is available from product application specialists, with whom you should share your combustion and fired heater related challenges. Combining your own facilities and process knowledge and experience with their product application expertise will lead to effective solutions.

Monday, January 30, 2017

Operating Principles and Application of Vortex Flowmeters

vortex flowmeter
Vortex flowmeter
(courtesy of Yokogawa)
To an untrained ear, the term "vortex flowmeter" may conjure futuristic, potentially Star Wars inspired images of a hugely advanced machine meant for opening channels in warp-space. In reality, vortex flowmeters are application specific, industrial grade instruments designed to measure what may be the most important element of a fluid process control operation: flow rate.

Vortex flowmeters operate based on a scientific principle called the von Karman effect, which generally states that a fluid flow will alternately shed vortices when passing by a solid body. "Vortices" is the plural form of vortex, which is best described as a whirling mass, notably one in which suction forces operate, such as a whirlpool. Detecting the presence of the vortices and determining the frequency of their occurrence is used to provide an indication of fluid velocity. The velocity value can be combined with temperature, pressure, or density information to develop a mass flow calculation. Vortex flowmeters are reliable, with no moving parts, serving as a useful tool in the measurement of liquid, gas, and steam flow.

While different fluids present unique challenges when applying flowmeters, stream is considered one of the more difficult to measure due to its pressure, temperature, and potential mixture of liquid and vapor in the same line. Multiple types of steam, including wet steam, saturated steam, and superheated steam, are utilized in process plants and commercial installations, and are often related to power or heat transfer. Several of the currently available flow measurement technologies are not well suited for steam flow applications, leaving vortex flowmeters as something of a keystone in steam flow measurement.

Vortex flowmeter
Vortex flowmeter
(courtesy of Yokogawa)
Rangeability, defined as a ratio of maximum to minimum flow, is an important consideration for any measurement instrument, indicating its ability to measure over a range of conditions. Vortex flowmeter instruments generally exhibit wide rangeability, one of the positive aspects of the technology and vortex based instruments.

The advantages of the vortex flowmeter, in addition to the aforementioned rangeability and steam-specific implementation, include available accuracy of 1%, a linear output, and a lack of moving parts. It is necessary for the pipe containing the measured fluid to be completely filled in order to obtain useful measurements.

Applications where the technology may face hurdles include flows of slurries or high viscosity liquids. These can prove unsuitable for measurement by the vortex flowmeter because they may not exhibit a suitable degree of the von Karman effect to facilitate accurate measurement. Flow measurements can be adversely impacted by pulsating flow, where differences in pressure from the relationship between two or more compressors or pumps in a system results in irregular fluid flow.

When properly applied, the vortex flowmeter is a reliable and low maintenance tool for measuring fluid flow. Frequently, vortex flow velocity measurement will be incorporated with the measurement of temperature and pressure in an instrument referred to as a multivariable flowmeter, used to develop a complete measurement set for calculating mass flow.

Whatever your flow measurement challenges, share them with a flow instrument specialist, combining your process knowledge with their product and technology expertise to develop effective solutions.

Wednesday, November 9, 2016

Box-In-Box Coriolis Flow Meter Design Explained



Yokogawa, manufacturer of the Rotomass Coriolis Flow Meter utilizing the patented "box-in-box" design, has produced a short video explaining how their design counteracts some of the environmental and process piping conditions that can negatively impact measurement of fluid flow. On Coriolis type flow instruments, conditions that apply stress to the sensor tube assembly can change the resonant frequency of the assembly, impacting the measured reading. The Yokogawa design employs a means to minimize or eliminate their effect, maintaining accurate measurement of flow in process piping.

Share your flow measurement challenges and requirements with product application specialists, combining your process knowledge with their application expertise to develop effective solutions.

Wednesday, October 26, 2016

Industrial Process Gas Chromatograph With Parallel Processing

industrial process gas chromatograph parallel processing
GC8000 Process Gas Chromatograph
Yokogawa
Gas chromatography is a common analysis tool employed in many areas of the process control industry, including oil and gas, pharmaceutical, chemical, and others. Yokogawa Corporation of America developed instrumentation to provide top tier GC performance with their GC8000 Process Gas Chromatograph for use in oil and gas, and other industrial applications.

In addition to the ruggedness and reliability for which Yokogawa gas chromatographs are well known, the GC8000 brings a number of innovations and improvements to the company’s process gas chromatography product offering.
  • Color touchscreen HMI for easy operation
  • Advanced predictive diagnostics and software functions monitor key performance indicators during each analysis to verify analyzer is operating within proper tolerances.
  • Parallel chromatography enabled through the use of GC Modules provided as part of the GC8000. Virtual GCs can be set up inside a single GC with GC Modules to measure multiple streams simultaneously.
The graphics below expand on this overview of the GC8000 Process Gas Chromatograph, the culmination of Yokogawa’s 55 years of experience in the field. For more detailed information, or to discuss your application specifics, contact a product specialist.


Monday, August 22, 2016

Measuring pH and ORP eBook

Get your copy of this 72 page
eBook (courtesy of Yokogawa)

Measuring pH/ORP is very common, but taking true measurements and correct interpretation of the results is not self-evident. Certain effects can potentially cause problems if not taken into consideration.

The purpose of this book is to provide a comprehensive understanding of pH/ORP measurement and how to achieve reliable results. Basic information on the principles of measuring pH/ORP, the construction of the sensing elements and their basic use in process applications are provided.

A part of achieving accurate and reliable pH/ORP measurements requires sufficient and correct maintenance and storage conditions. Prevention of common errors during maintenance and storage, as well as consistent detection of loop failures is important. This book describes how these can be avoided and how failures can be detected.

This book is accompanied with a frequently asked question and answer section as well as an appendix that includes helpful information like a Chemical Compatibility Table and a Liquid-Application-Data-Sheet, which can be used to describe the user’s application.

Tuesday, July 19, 2016

Practical Issues of Combustion Oxygen Measurement Specifically Related to NOx Emissions

NOx emissions
Power plants and NOx emissions.
Power plants concerned with lowering NOx emissions are making tremendous changes to accommodate EPA regulatory requirements. A substantial number of these changes include the expansion and upgrade of the plant combustion oxygen measurement equipment. There is a striking relationship between the number of NOx reductions projects and the sales quantity of insitu oxygen detectors. The reason is that power plant betterment groups, operators, boiler manufacturers and engineering firms understand the direct relationship between NOx and excess air in the combustion process.

An area of daily practical importance to boiler operators and I&C teams are the common problems with insitu oxygen measurements. This paper focuses on the practical issues of combustion oxygen measurement as they relate to specifically to fuel usage and NOx emissions.

Read the entire white paper, courtesy of Yokogawa Corporation of America below:

Tuesday, May 31, 2016

The Coriolis Effect Simply Explained. And Then Not So Simply Explained.

This video very simply (and very elegantly) demonstrates the Coriolis Force through the use of a ordinary garden hose.




An Now the Not So Simple Explanation

This force occurs, when the medium being measured is flowing at velocity ν through a tube that is rotating around an axis perpendicular to the direction of flow at angular ϖ.
coriolis force

When the medium moves away from the axis of rotation it must be accelerated to an increasingly high peripheral velocity. The force required for this is called Coriolis force, after its discoverer. The Coriolis force reduces the rotation. The opposite effect occurs, when the medium flows towards the axis of rotation. Then the Coriolis force amplifies the rotation.

The formula for the Coriolis force is as follows:
coriolis force

The entire measurement tube is deformed slightly by the Coriolis forces, in the way shown. This deformation is registered by movement sensors at points S1 and S2 .

For practical exploitation of this physical principle, it is sufficient for the tube to perform sympathetic oscillations on a small section of a circular path. This is achieved by exciting the measurement tube at point E by means of an electromagnetic exciter.

Coriolis flowmeters use the oscillating movement of two symmetric metal tubes that are made to vibrate from an internal driver coil.  When liquids or gases flow through the tubes, a phase shift occurs (like you see in the hose) and pickups measure the “twist” and then relate that value to the actual flow. In other words, the amount of twist is proportional to the mass flow rate of fluid passing through the tubes. The greater the twist, the larger the distance between, and the greater the flow.


The general construction of a Coriolis mass flowmeter looks like the following:
Coriolis flowmeter
Coriolis flowmeter diagram (Yokogawa)

Friday, April 29, 2016

Excellent Resource for Finding Measurement & Control Products FAST!

find instruments fast
Find instruments fast!
Yokogawa Corporation of America, an industry recognized source for innovative process measurement and control products, has made available an easy to use product selection tool for those navigating through the company's extensive product offering. The Product Finder is a great time saver that enables a user to quickly locate product and technical information on Yokogawa products that meet the user's selected criteria.

Let's step through a quick example. You will see how this quick and easy to use tool saves time by navigating quickly to the website pages detailing products meeting your requirements.

The Product Finder is accessible through a number of links throughout Yokogawa's network of Reps. Clicking the link lands you on the start page of the Product Finder. For this example, I am going to search for a flow meter with the following characteristics:
  • Mass flow measurement 
  • Non-conductive liquid
  • Accuracy of 1%
  • Flow measurement device must have an integral transmitter
  • Tri-clamp connections

Above, I declared my location as United States. The next step, shown below, is to select "Flow" as the measurement parameter. You will see in the drop down menu that there are many measurement elements that can be selected, with Yokogawa products for each.


My selection of "Flow" returns a list of all the company's flow measurement devices, of which there are many (this cropped screenshot, shown below, only shows four, but there were many more) . This is where the selector really helps you. Instead of examining several or many different models, the user can focus the search by adding more product characteristics. You can see the list of prompting questions on the left side of the page. Answering these will narrow the search results to the show only the products meeting all the criteria specified by the user.


The next image (below) shows selections of all  my sample product attributes entered on the left column. Note that there is now only a single product that matches all of my sample criteria. The whole process took less than two minutes. By clicking on the "View More Details" button below the product image, I gain access to all of the available technical, support, and product data for my selected flow measurement device.


For personal service with Yokogawa products in the Commonwealth of Virginia, contact Flow-Tech at:

Central VA Office
10993 Richardson Rd#13
Ashland, VA 23005
Ph: 804-752-3450

Tidewater VA Office
Ph: 757-504-5767

Western VA Office
Ph: 276-207-1794



Saturday, February 27, 2016

Accurate Flow Measurement in Harsh Environments with Vortex Flowmeters

Yokogawa digitalYEWFLO
Yokogawa digitalYEWFLO vortex flowmeter
The Yokogawa digitalYEWFLO vortex flowmeter is accurate and stable, even in harsh process conditions, and has a highly reliable and robust design that delivers improvements in plant efficiency and reduced operating costs

Operating Principle

When a shedder bar is placed in a flow, Karman vortices are generated on the downstream side of the bar. The Karman vortices are detected by two piezoelectric elements installed in the upper part of the shedder bar. The vortex frequency is proportional to the  ow velocity in a specific range of Reynolds numbers. Therefore, flow velocity or flow rate can be determined by measuring vortex frequency.

Noise Reduction

Noise caused by strong piping vibration may affect the accuracy of vortex frequency detection. The two piezoelectric elements in the digitalYEWFLO are installed in a configuration that is polarized, so they are not affected by vibration in the  ow or vertical directions. The noise of vortex (lift)- direction vibration is reduced by adjusting the outputs of the piezoelectric elements. Combining these features with the Spectral Signal Processing (SSP) function provides optimum and stable measurement.

Monday, January 11, 2016

Mass Flow Rate and More From Multivariable Transmitter - Process Measurement and Control

Multivariable mass flow measurement transmitter
Model EJX 910A Multivariable Transmitter
Courtesy of Yokogawa
Industrial process measurement and control is charged with continually producing better, faster, and cheaper results with increasing levels of safety. For applications requiring mass flow rate measurement of fluids or tank level, a multivariable transmitter has much to offer when it comes to improving outcomes throughout your industrial process operation.

The EJX 910 series from Yokogawa provides the latest generation of digital sensing and processing to provide fast and accurate process measurement of temperature, static pressure, differential pressure, and dynamically compensated mass flow. Flow accuracy as high as +/-1.0% is achievable, along with:

±0.04% Differential Pressure Accuracy
±0.1% Static Pressure Accuracy
±0.9°F External Temperature Accuracy



Some other highlights include:

  •  Industry leading fast response time for safe and accurate process control.
  • Yokogawa's specially developed DPharp digital sensor providing simultaneous static and differential pressure measurement, digital accuracy, and no A/D conversion error.
  • LCD display can be rotated in 90 degree increments. External zero adjustment screw and range setting switch enhance field setup.
  • Improved mass flow accuracy of +/- 1% from multivariable operation in one device with dynamic compensation.
  • Signal characterizer for measuring level in irregular shaped tanks.
  • Utilizes industry recognized open communication protocols for easy integration into existing installations.

The manufacturer's white paper, describing precisely how the unit works and how it can be applied, is below. Browse the white paper for some additional detail, but consult with a product specialist to explore how to improve your process measurement and control performance. They have even more information than is provided here which, when combined with your process knowledge, is sure to generate a positive solution to any challenge.



Wednesday, October 28, 2015

Connecting the Yokogawa EJX910 Series MODBUS with USB MODBUS Converter

EJX910
EJX910
The Yokogawa EJX910 multivariable transmitter serves as a differential pressure gauge, a pressure gauge, and a thermometer (with an external temperature sensor). In addition to this multifunctionality, the fluid density compensation function provided by the transmitter itself and the PC-installed EJXMVTool’s mass flow parameter configuration tool enable high-speed, high-precision mass flow rate measurement. The EJX910 supports a number of flow rate standards and a variety of fluid types as target applications. Moreover, the EJX910 can be applied to integrated flow rate measurement and various diagnoses that use many process variables (differential pressure, static pressure, temperature, etc.).






For more information on Yokogawa products in Virginia, contact:

Flow-Tech, Inc.
10993 Richardson Rd#13
Ashland, VA 23005
Ph: 804-752-3450