Showing posts with label coriolis flowmeter. Show all posts
Showing posts with label coriolis flowmeter. Show all posts

Tuesday, April 10, 2018

Accurate Low-Flow Measurement and High-speed Communication in Supercritical Fluid Extraction and Chromatography Systems

Low-Flow Measurement in Supercritical Fluid Extraction
Low-Flow Measurement in Supercritical Fluid Extraction
A food producer removes caffeine from coffee beans to create a decaffeinated version of its most popular blend. A manufacturer of dietary supplements extracts pesticides and organic solvents from ginseng to ensure a higher-quality end product. A crime laboratory measures the amount of morphine in a blood sample to analyze the usage habits of a drug addict.

These scenarios might not appear to share much in common – after all, what does your favorite morning beverage have to do with forensic drug testing? – but there are important similarities. In each example, a supercritical fluid can be used to carry out precise, efficient, low-toxicity chemical extraction or chromatography.

SITRANS F C MASS 2100  SITRANS FCT010
SITRANS F C MASS 2100
sensor paired with the
SITRANS FCT010
digital transmitter
Regardless of the industry or application, supercritical fluid extraction (SFE) and super- critical fluid chromatography (SFC) require a very specific set of operating conditions. Keeping the environment just right for SFE and SFC requires consistently accurate process measurements – all of which are made possible by incorporating a high-performance Coriolis mass flowmeter designed to measure accurately at low flow rates.

Download this Application Note Here

The Application

An analytical science corporation in the northeastern USA develops instruments for laboratory-based applications across a broad range of industrial, academic and government organizations. Among their specialties are SFE and SFC systems tailored to the specific needs of customers and designed to extract and/or measure a variety of chemical compounds.

Their systems rely on supercritical carbon dioxide (CO2) instead of organic solvents to provide selective sample extractions and/or measurement. CO2 normally behaves as a gas at standard temperature and pressure, or as dry ice when frozen. But when CO2 is held at or above its critical temperature of 31.2 °C (87.8 °F) and critical pressure of 73.8 bar (1071.6 psi), it achieves a super- critical state midway between a gas and a liquid, with liquid-like density and solvating power but a viscosity near zero. Using supercritical CO2 results in shorter completion times and purer extracts – not to mention lower operating costs in comparison to solvent-based systems.

To kick off SFE or SFC, supercritical CO2 is pumped into the system and passes through an integrated Coriolis flowmeter, which measures the incoming mass flow rate, density and temperature. This is a crucial step in both processes, as it’s the prima- ry way to ensure that all CO2 flowing into the system remains in the desired fluid state. Once conditions are verified by the flowmeter, the CO2 helps to extract the compounds (in SFE) or separate and measure them (in SFC).

The Challenge

For more than 15 years, the company has had the option to add a SITRANS F C Coriolis flowmeter from Siemens to their SFE and SFC systems, depending on customer requirements. Their meter of choice consisted of a MASS 2100 sensor in size DI 1.5 (1/16”) and a MASS 6000 transmitter. They initially selected the Siemens solution because of its capability for very accurate measurement – as high as 0.1% of flow rate – under the low-flow conditions required for chemical extraction and measurement with supercritical CO2. The robust construction of the MASS 2100 sensor also offered the reassurance of long-term durability, even in high-pressure environments.

Over time, the company recognized the need to expand into a broader market- place by ensuring that all of their super- critical fluid solutions complied with the RoHS Directive for hazardous materials, which would open the opportunity to sell into the European Union. Having come to appreciate the reliability of the SITRANS F C product line and the responsiveness of Siemens customer support, they turned to Siemens for a digitally based, RoHS-compliant Coriolis flow alternative. That’s when they were introduced to the SITRANS FCT010.

The Solution

Part of the next-generation digital flow platform from Siemens, the FCT010 is a powerful, very compact Coriolis transmitter designed especially for skids and other small-footprint assemblies – a major benefit for the SFE and SFC systems given their limited availability of space.

Another prerequisite for selection was superior performance, and the FCT010 does not disappoint. The transmitter measures with advanced digital signal processing technology, so it produces a stronger signal-to-noise ratio than an analog transmitter for higher accuracy, improved resistance to process noise and a more stable zero point. The FCT010 can also detect and respond to even the smallest changes in flow with a best-in-class 100 Hz update rate.

The company was pleased to learn that the new transmitter could be paired seamlessly with the existing MASS 2100 sensor, which over the course of 15 years has proven to be the ideal low-flow sensor for measuring supercritical CO2. They also liked that the FCT010 is extremely simple to install as a result of its small size and easy-to-use wiring connections.

Ultimately, they placed an order for 100 FCT010 transmitters to be included with new SFE and SFC systems. Now that the enhanced Coriolis flow solutions are in place, the upgraded systems are benefit- ting from faster communication coupled with better process data – all of which adds up to higher-precision, more effi- cient extractions and measurements for laboratories.

With help from the digitally powered SITRANS F C Coriolis flow family, the corporation is equipping manufacturers and researchers with advanced tools that optimize science, commerce and their bottom lines.

For more information, call Ives Equipment at (877) 768-1600 or visit https://ivesequipment.com.

Reprinted with permission from Siemens.

Friday, February 24, 2017

SITRANS FC430 Coriolis Flowmeter Wins Control Engineering’s 2017 Engineers’ Choice Award

SITRANS FC430 Coriolis flow meter
SITRANS FC430 Coriolis Flow Meter
The Siemens SITRANS FC430 Coriolis flow meter, with National Type Evaluation Program custody transfer approval, for volume and mass liquid flow,  is a Control Engineering 2017 Engineers’ Choice Awards Winner.

The Siemens SITRANS FC Coriolis flow sensor delivers mass flow, volume flow, density, fraction and temperature measurement of both liquids and gases with exceptionally high accuracy and low pressure drop.

Siemens Coriolis flow meters are user-friendly to set up and use day-to-day. The meters stand up to the most demanding process industry conditions and continue to operate in the noisiest of environments – from hazardous chemicals to fiscal metering, custody transfer to compressed natural gas fuel dispensing. Its compact design makes installation easy even in the tightest spaces.

For more information on Siemens products, visit Ives Equipment here or call (877) 768-1600.

Wednesday, March 30, 2016

Compact NTEP Approved Custody Transfer Coriolis Flowmeter Means Easier Installation and Space Savings

SITRANS FC430
SIEMENS SITRANS FC430
Running an industrial plant carries with it a very high level of responsibility. You must adhere to the highest standards of safety and hygiene, ensure that your final products are of consistent quality, and comply with stringent industry and governmental regulations.

By combining the Siemens SITRANS FCS400 sensor and SITRANS FCT030 transmitter, the digitally based SITRANS FC430 is suitable for applications within the process industries. It is also one of the first Coriolis systems worldwide to achieve SIL 2 and 3 approval in hardware and software, respectively – the ultimate assurance of safety and reliability.

The Siemens SITRANS FCS400 is the market’s most compact sensor, making installation and replacement easier than ever. It provides an accuracy rate of 0.1% and high sensitivity for optimal measurement of even low flows. The SITRANS FCS400 features a very stable zero point, low pressure loss, and high immunity to process noise and plant vibrations.

The SITRANS FCT030 transmitter delivers multi-parameter measurements with enhanced efficiency, simplicity and security. Available in a modular design, it can be remote or compact-mounted with all SITRANS FCS400 sensor sizes. An enclosed micro SD card serves as a removable database of operational information and provides direct access to all certificates and audit trails.

The SITRANS FC430 is ideal for a broad array of process industries and applications, including:
  • Chemical. Designed for optimal performance in hazardous areas and compliant with a wide variety of certificates and approvals, including SIL 2 (hardware), SIL 3 (software), FM, ATEX, CSA
  • Food & Beverage/Pharmaceutical. High level of accuracy improves quality control, while multi-parameter measurement ability strengthens process management. 
  • Oil & Gas. NTEP approved for custody transfer and capable of measuring mass flow directly, ensuring performance is not affected by fluctuating process conditions. Unique tube design results in minimal pressure loss and high resistance to process noise.
  • Affiliated Industries/OEMs. Highly customizable nature offers versatility to meet the needs of customers in many different businesses, from food and beverage to automotive to HVAC, to oil and gas to pulp & paper and beyond.
Formore information, contact:

Ives Equipment
877-768-1600

Wednesday, February 10, 2016

Coriolis Flow Sensor with 15 RA/230 Grit for Sanitary Applications

Sanitary Coriolis flow sensor
Sanitary Coriolis flow sensor
with 15 RA / 230 Grit finish
on wetted parts.
(Courtesy of Siemens)
In sanitary applications, the finish and the material must be designed for easy and reliable cleaning and sanitation. For decades agencies have required sanitary finishes to comply to minimum standards. But now, many food, Biotech, and Pharma companies are going beyond the minimum regulations and providing high-end finishes because of the reduced sanitation time and reduced bacteria growth these finishes facilitate.

Sanitary applications mandate that stainless steel equipment have a sanitary finish. In very general terms, “sanitary finish” means a smooth, scratch-free, non-corrosive finish. But it’s much more than that. To qualify the finish more accurately, there are two primary terms used:

Roughness Average, or RA: A standard for an average of the peaks and valleys of the metal’s surface, measured in microinches or micrometers. The lower the RA, the smoother the finish.

Grit: The size of the abrasive used in the metal polishing process. Higher grit numbers are associated with higher polishing.

For process control equipment manufacturers, achieving higher-end finishes is not an easy proposition. Providing better finishes requires experience and controlled processes for quality fabrication, as well as possible tooling and production floor changes. Working inside sanitary requirements requires careful handling to prevent contamination from the manufacturing environment. Not all process instrument manufacturers are capable of providing the required environment.

A Coriolis Flowmeter with 15 RA/230 Grit for Biotech and Pharma

Siemens is currently offering a 15 RA/230 Grit surface finish for the FCS400 Coriolis flow sensor internal wetted-tube parts as a special, and will soon be offering it as a standard.

A Coriolis sensor, with such a high end finish, is very attractive to many "clean" industries including chromatography, blood plasma fractioning, chemical synthesis phases, Active Pharmaceutical Ingredient (API) extraction/fermentation and purification, formulation, and  purified API.

Biotech and Pharma manufacturers, in particular, are poised to take advantage of the enhanced 15 RA/230 Grit finish coupled with the inherent benefits of the FCS400 Coriolis flow sensor, namely:
  1. Accurate measurement across the entire range
  2. Zero internal fabrication joints and self-draining design
  3. All metal surfaces eliminate risks from particulates from the breakdown of synthetic materials
  4. No internal fluids to leak into the process
  5. A direct mass flow rate/ and total
For more information, contact:

Ives Equipment
www.ivesequipment.com
(877) 768-1600

Thursday, October 8, 2015

The Coriolis Principle and It's Use in Flow Measurement

Image courtesy of
Wikipedia
The Coriolis effect acts on a medium that is accelerated through a rotating system, like a ball on a rotating disk its movement is straight, however, if the observer turns with the disk the ball is apparently deflected (see image).

The same effect occurs with a water hose that rotates around its own axis, like a skipping rope. As soon as water flows through the host also twists. The twisting is stronger or weaker, depending on the amount of water flowing through the hose.

Coriolis flow meters function according to the same principle (measuring the force resulting from acceleration caused by mass moving toward, or away from, a center of rotation).
Oscillation with flow
(courtesy of Wikipedia)
Oscillation without flow
(courtesy of Wikipedia)
 
The Coriolis effect also appears with an oscillating movement, and in a Coriolis flowmeter, two symmetric metal tubes are set vibrating by an internal driver coil. The tubes oscillate with a resonance frequency similarly to that of a tuning fork.

The oscillation is measured precisely by two pick-ups at the inlet and outlet sections. If liquids or gases flow through the tubes, a phase shift occurs the pickups measure the spatial and temporal displacement (twist). The amount of twist is proportional to the mass flow rate of fluid passing through the tubes. The greater the amount, the stronger the tubes oscillate outwards.

Finally, sensors and transmitters are used to measure the twist and create a linear flow signal as an output for monitoring and control.

This video, although marketing oriented, does a great job illustrating the Coriolis effect and how Coriolis flowmeters measure mass flow (the video references the Siemens SITRANS FC430 as the example).