Measurement and Testing
Thermal fl ow meters excel in challenging hydrogen measurement applications
Engineers and plant operators responsible for producing, using, dispensing, or distributing hydrogen (H2) gas will fi nd accurate and rugged fl ow meter solutions in the ST Series Thermal Flow Meters from Fluid Components International (FCI). These precision H2 calibrated fl ow meters provide a range of products for any pipe diameter and virtually any installation conditions and require no routine maintenance.
Hydrogen is a focus of global attention as a renewable energy fuel resource. Production processes from fossil sources, biomass and waste and H2O-splitting are capturing worldwide investor attention as brown, green, grey, and blue alternative fuels. It is also a key gas used in ammonia manufacturing in the agricultural chemicals industry, methanol production and other processes. Regardless of the source, accurate, repeatable and reliable fl ow meters are a critical component in the processes.
Hydrogen-calibrated thermal mass fl ow meters are well suited to meet the conditions of these applications. Thermal mass fl ow meters work based on the principles of heat transfer. H2 has a very high heat transfer rate and to measure it with high accuracy and repeatability, a thermal fl ow meter should be calibrated in actual H2. Applying theoretical gas equivalency equations to ‘correct’ readings for H2 are simply inadequate and ineffective for this gas.
The ST Series thermal fl ow meters from FCI are calibrated under customer installation conditions in actual hydrogen to achieve superior installed accuracy and repeatability in their intended application. They are direct mass fl ow measuring and inherently multivariable providing both fl ow and temperature outputs. Thermal mass fl ow meters with their no moving parts design also virtually eliminate wear, breakage and maintenance. The ST series has a wide selection of process connections, including compression fi ttings, NPT male and female threaded connections, fl anges, ball valves, hot taps and more to ensure installation site compatibility.
FCI’s ST family offers solutions from small, compact meters with basic 4-20mA analog output to feature-enhanced versions with multiple 4-20mA outputs, digital bus communications such as HART, Modbus, Foundation Fieldbus, and Profi bus, in-situ calibration, self-checks, on-board data logging, and more. Furthermore, all FCI ST Series H2fl ow meters are direct mass fl ow measuring, carry global agency approvals for installation in Div.1/Zone 1 environments, and offer superior ruggedness and long-life with NEMA 4X/IP 67 rated low-copper content aluminium or 316 stainless steel enclosures.
These fl ow meters with standard turndowns of 100:1 and fl ow ranges from 0.25 to 1000 SFPS (0.07 NMPS to 305 NMPS) ensure their application versatility. The ST’s transmitter/ electronics can be integrally mounted with the fl ow body or may be remote mounted to 1000ft (305m) away. They are available in either DC or AC powered versions. Their readout/display options include basic fl ow rate and totaliser to a best-in-class multivariable digital/graphic backlighted LCD with FCI’s exclusive through- the-glass activated 4-button array.
In crowded equipment hydrogen applications with limited straight-runs and/or for operating in transitional fl ow ranges that can adversely affect accuracy and repeatability, ST Series Flow Meters are also optionally available with and calibration-matched to Vortab® Flow Conditioners to ensure installed performance.
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WWW.PETRO-ONLINE.COM New process fl ow cell brings versatility to in-line
spectroscopy of liquid process streams Specac is proud to announce the offi cial release of the Spyder™ Process Flow Cell, an innovative and robust tool designed for laboratory and small-scale pilot plant use. This latest product in Specac’s Process Analytical Technology (PAT) range simplifi es real-time, in-line liquid analysis in continuous chemical processes, providing a practical and optimal solution for early-stage process development. A versatile solution for feasibility studies and pilot scale processes
The Spyder™ Process Flow Cell, when integrated with a near-infrared (NIR) process analyser via fi bre optic cables, delivers seamless real-time liquid analysis as products fl ow through a process stream. Its compact design and adjustable pathlength provide fl exibility, enabling users to experiment with different measurement confi gurations before committing to a fi xed setup.
Laboratory feasibility studies are conducted on samples to understand whether NIR technology is viable for the robust on-line analysis of the process stream. Analysis of samples under conditions that resemble the process conditions as closely as possible (composition, pressure, temperature, particle contamination) is desirable to ensure that any errors in off-line analysis are not replicated in the calibration of the online NIR system.
The Spyder process fl ow cell, when properly confi gured, is capable of operation at up to 200 °C and 30 barg, enabling robust measurement capabilities. It is suitable for use in pilot plants and small-scale production environments. With straightforward plug-and-play installation and the ability to modify the pathlength, it offers signifi cant ease and reliability for process integration. Constructed with durable sapphire optics, 316L stainless steel components, and FFKM seals, the Spyder fl ow cell withstands a broad range of chemical environments without the need for costly alternative materials.
With its combination of precision, durability, and ease of use, the Spyder™ represents a cost-effective solution, delivering high return on investment by improving process control and reducing operational disruptions.
Key Features: Adjustable pathlength for customisable analysis
The Spyder™ offers an easy-to-use method for varying the pathlength, ideal for optimising spectroscopy setup during early-stage development. Once the optimal confi guration is achieved, users can easily switch from PTFE ferrules to stainless steel ones to secure the setup for in-service use.
Seamless integration Fitted with standard Swagelok®
connectors, the Spyder™ integrates effortlessly into existing setups, ensuring smooth installation and reliable operation. Robust solutions for challenging process environments
Specac’s technologies are built to perform even in the harshest industrial environments. The Spyder™ ensures operators maintain control of their processes, contributing to greater operational safety and sustainability. The company are proud to support greener technologies through innovative process solutions.
Comprehensive support from feasibility to full-scale production
Specac works closely with your engineering teams to understand your process needs and deliver tailored solutions. Whether you’re in the feasibility stage or scaling up to full production, Specac provides ongoing support for servicing and repairs, ensuring long-term reliability and performance. Application Spotlight:
Our latest application note, Optimising process NIR analysis with the tuneable-pathlength Spyder™ process fl ow cell, showcases the Spyder™ in real-world scenarios, demonstrating its ability to deliver precise and reliable analysis under various chemical process conditions.
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