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The lightning fast Thermo Scientific AutoEXEC flow computer and remote telemetry unit integrates measurement and control functionality for both natural gas and petroleum liquids. This highly accurate system calculates flow on four to 32 runs at an unprecedented rate of 10 times per second. It solves complicated AGA equations and is compliant with API Ch. 21.1 and Ch. 21.2. It features a preloaded default configuration; USB connectivity via three ports: host, slave-device and on-the-go (OTG); secure access controls; authentication and built-in encryption; built-in lightning protection on each board; a processor that operates at the widest temperature range in the industry: -40 C (-40 F) to 85 C (185 F); and AO accuracies of ±0.1% over the full temperature range. The standard AutoEXEC includes a CPU board, power supply and an enclosure with six available board slots. Optional boards can be added to increase input/output as necessary and each board has its own 32-bit ARM 7 industrial grade processor, enabling the most rapid communication to the motherboard. Seven additional chassis can be daisy-chained together to obtain tremendous input/output and meter run capabilities. Remote installation requires that the AutoEXEC be manufactured to endure the harshest elements. The board withstands 120 indirect lightning strikes of 6,000 volts/3,000 amps each and temperature cycling from -40°C (-40°F) to 85°C (185°F). Analog output accuracies of ±0.1% are ensured over the full temperature range. Multiple surge protection schemes are also installed on each board.
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The flowcom compensates for flowmeter errors due to pressure or temperature variations and computes mass or standard volume flow rates for gases, steam or liquids. It can even do so for a pair monitoring stations. It also computes heat transfer rates and thermal-energy contents for heat transfer media or refrigerants.
As a two channel version, the flowcom can calculate balances between supply and return lines.
A particular advantage of the flowcom: It does not operate based on problematic equations, but integrates a number of permanently stored tables of the mass densities and enthalpies of commonly employed media.
Flowcom will compensate the infloence of temperature and pressure on virtually each flowmeter such as integrating pitot tubes, orifices, venturis, vortex meters, mag meters, ultrasonic flowmeters, PD-meters…
The flowcom communications software runs under Windows.
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The Nova-Flow Series of flow computers is a family of highly flexible, modular flow computers designed for
basic rate and total flow display, batch control for liquid and gas flow measurement, as well as for
thermal energy measurement. With more than 500,000 unique configurations possible, the potential
applications for these devices is almost limitless.
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Rflo-VC211L Electronic Volume Corrector
The VC211L™ is an advanced, high accuracy,
single stream flow computer specially designed to
meet the emerging requirements of gas
distribution utilities.
It defines a new standard for ease of use while
delivering unmatched levels of performance and
flexibility.
The VC211L incorporates wide range of features
which not only meets the local metering
requirements, but also provides a complete
solution for the gas distribution utilities to achieve
fast, efficient and cost effective network operation
and management.
• Approved by NMI for legal metrology
• EN 12405 compliant
• AGA 5, AGA 7, AGA 8, GERG
• ISO 6976 calculations
• Complies with ISO 12213-3
• Certified for use in hazardous locations
• F l e x i b l e gas chromatograph connection
• Remote upload/download of gas information
• 1 year history of Vm, Vc, Vb, M, E, P and T
• Hierarchical alarm and early warning structure
• 64 bit normal and disturbed accumulators
• Min, max, average data storage
• Multi level data safety and security
• Connects to all common turbine types
• Dual high and low pulse inputs
• AGA 7 compliant meter correction
• Allows direct NAMUR sensor connection
• System-wide distribution of gas information
• 4 communication ports
• 1 isolated RS232/RS485
• port for remote connections
• MODBUS master and slave support
• Easy access thru Internet
• Local and remote configuration
• and programming software
• 32 bit RISC based high performance design
• AGA 8 detailed calculations in 30 msec
• Expandable memory
• High isolation, precision I/O
• 24 bit analog input resolution
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