New SIL rated ST80 thermal mass flow meters for SIS applications

AMS Instrumentation and Calibration introduces the new SIL compliant
ST80 Series thermal mass flow meter from Fluid Components International (FCI)
for use in chemical, electric power, oil and gas, refining and similar safety-critical
process industries.

Process and plant engineers involved in the design or instrumentation of
safety integrity systems (SIS) and requiring air or gas flow meters will find the
new SIL compliant ST80 Series thermal mass flow meter useful for their
operations. The ST80 flow meter combines ultra-reliable, feature-rich
electronics with the industry’s most extensive selection of application-matched
flow sensors and best-in-class calibration for use in a wide range of demanding
gas flow meter applications in safety instrumented systems. The ST80 has
already been independently evaluated by industry expert exida for compliance
and the FMEDA summary is available for review by prospective users.

Key features of ST80 Series thermal mass flow meters include no-moving
parts thermal dispersion flow sensor, robust transmitter enclosure and industry-leading
selection of process connections allowing ease of installation, offering exceptionally
long service life and requiring minimal maintenance; suitable for pipe
diameters from 25 to 2500 mm and air/gas temperatures up to 454¡C; and accuracy
of ±1% of reading, ±0.5% of full scale and repeatability of ±0.5% of reading
with flow rates up to 305 NMPS and 100:1 turndown.

The ST80 Series features FCI’s patent-pending, innovative Adaptive Sensor
Technology (AST) thermal mass flow sensor drive technology. This breakthrough
technology provides a number of benefits, including fast response, extended
flow rates, lower energy cost and extended flow element reliability.

The ST80 Series outputs and user interfaces are extensive to ensure
interfacing with virtually any control system and/or set-up or configuration
devices. Standard outputs include dual 4-20 mA, NAMUR NE43 compliant analogue
outputs, HART (version 7), Modbus 485 and a USB port. Foundation Fieldbus or PROFIBUS
PA can be optionally added. A best-in-class, backlighted information LCD
provides digital and bar graph readouts of the process’ flow rate and
temperature, totalised flow, alarm conditions and diagnostics feedback; a user
defined label field is also available.

The transmitter enclosure is NEMA 4X/IP67 rated, selectable for NPT or
metric conduit port threading and is available in both aluminium and stainless
steel and maybe remotely located up to 1000 feet (305 m) apart from the flow
element. In addition to SIL rating, the instrument also carries full instrument
Div.1/Zone 1 Ex hazardous location approvals of FM, FMc, ATEX, and IECEx.

As the manufacturer of four of the thermal flow meter industry’s total
of seven SIL rated products, FCI delivers an unparalleled commitment to IEC
61511 and 61508 standards for safety in hazardous industries. The company’s
ST100, ST75, ST51A and now the ST80 Series air/gas flow meters are all designed
for use in SIS applications. In addition to the flow meters, FCI’s FLT93 and
FS10 Series flow and level switches are also SIL compliant. As the
implementation of newer standards related to safety instrumented systems
continues to increase, the process industries can continue to rely upon FCI to
meet their SIL instrumentation requirements.

For further
information, please visit the AMS
Instrumentation and Calibration website
or call 03-9017 8225, or Freecall (NZ) 0800 442 743.

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