Rugged Thermal Mass Flow Meter Series

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With ATEX/IECEx approvals for use in a wide range of industrial sectors

Measurement & Instrumentation

Rugged Thermal Mass Flow Meter Series
Rugged Thermal Mass Flow Meter Series

Engineers around the globe who are responsible for process and plant safety will be pleased to know that the rugged ST80 Series Thermal Mass Flow Meter from Fluid Components International (FCI) is now available with ATEX/IECEx approvals. The independent third party testing and certified ratings of the ST80 are on the complete instrument, including the sensor element, electronics, and the enclosure, to assure ST80 customers of the highest integrity and plant safety.

The ST80 Flow Meter’s ATEX approval includes: II 2 G EX db IIC T6...T1 Gb Ta = -40°C to +60°C; IP66/67 II 2 D Ex tb IIIC T85°C...T450°C Db Ta = - 40°C to + 60°C; IP66/67.  IECEX approvals are: II 2 G EX db IIC T6...T1 Gb Ta = - 40°C to + 60°C; IP66/67 II 2 D Ex tb IIIC T85°C...T450°C Db Ta = - 40°C to + 60°C; IP66/67. These approvals apply to both DC and AC powered versions of the ST80, as well as integral or remote mounting of the transmitter. Further, the ST80 Flow Meters are also SIL rated for use in SIS applications. The ST80 combines ultra-reliable, feature-rich electronics with an extensive selection of application-matched flow sensors and calibration for use in a wide range of demanding industrial process and plant air/gas flow meter applications. With its no-moving parts thermal dispersion flow sensor, robust transmitter enclosure and the industry’s widest selection of process connections, the ST80 provides ease of installation, requires virtually no routine maintenance, and achieves exceptionally long service life. 

For use with a wide range of pipe diameters

The ST80 Series Meters are suitable for pipe diameters from 1 to 99 inches (25 to 2500 mm) and air/gas temperatures up to 850°F (454°C). They feature accuracy of ±1% of reading, ±0.5% of full scale and repeatability of ±0.5% of reading with flow rates up to 1000 SFPS (305 NMPS) and 100:1 turndown. The ST80 Series uses FCl’s exclusive, patent-pending AST™ (Adaptive Sensing Technology) thermal mass flow measuring technique. AST is a hybrid sensor drive and measuring circuit that combines both proven thermal dispersion techniques of constant power (CP) and constant temperature (CT) in the same instrument. The ST80 with AST measures in CT mode when measuring in lower flow ranges and start-up conditions, and will transparently and seamlessly shift to CP mode at mid-range and higher flow rates. The result is a best of both technologies where ST80 delivers extremely fast response with extended measuring ranges, at low power consumption which maximizes sensor reliability and reduces energy expenses

The available outputs and user interfaces with the ST80 meter are extensive to ensure interfacing with virtually any control system and/or set-up or configuration devices. Standard outputs include dual, NAMUR NE43 compliant 4-20 mA analog outputs, HART (version 7), Modbus 485 and a USB port. Foundation Fieldbus, PROFIBUS PA, or PROFIBUS DP can be optionally added. A backlighted informational LCD display provides digital and bar graph readouts of the processes flow rate and temperature, totalized flow, alarm conditions, instrument health and diagnostics feedback, and a user defined label field. The ST80 can be further enhanced by adding a four-button user interface activated through the glass, without removing the lid. This means the ST80 can be changed, interrogated, and period diagnostic modes initiated without removing the instrument from the process, even in hazardous areas. The transmitter enclosure is NEMA 4X/IP67 rated, with NPT or metric conduit ports, and is available in either aluminum or 316L stainless steel. It may also be remotely located up to 1000 feet (305 m) apart from the flow element.  

Posted on November 12, 2020 - (654 views)
Fluid Components International
1755 La Costa Meadows Drive
92078 San Marcos - USA
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