FCI’s new and improved compact thermal flow meters with HART

AMS Instrumentation and Calibration announces the launch of a compact
line of thermal flow meters from Fluid Components International (FCI) with an
all-new, advanced electronics design and improved features.

FCI’s new ST51A, ST75A and ST75AV thermal mass flow meters provide users
with an economical yet rugged solution for measuring air or gases in demanding
industrial process and plant applications. Improved features in the expanded thermal
flow meter line include HART Version 7 and digital bus communication. Representing
the next generation in thermal mass flow meter design from FCI, the new models combine
an all-new surface-mount design and lead-free RoHS compliant electronics with
highly accurate, repeatable all-welded, equal-mass flow sensors.

The added HART digital bus communication and its associated device
driver (DD) have been tested and certified by the Fieldcomm (HART) Group to
meet the latest Version 7 standards. With over 30 million supported field
instruments installed worldwide, HART technology offers a reliable solution for
leveraging the benefits of intelligent flow meters and other devices through
standardised digital communication.

Key features of the new ST51A, ST75A and ST75AV thermal mass flow meters
include dual 4-20 mA outputs meeting NAMUR NE43 and featuring a 500 Hz pulse;
electronics housed in a rugged IP67 rated, dual-cable port transmitter
enclosure available in aluminium or stainless steel; ability to mount the
transmitter directly to the flow sensor or remote-mount up to 30m away; CE
mark, and Div.1/Zone 1 Ex agency approvals of FM, FMc, ATEX and IECEx obtained;
independently verified to meet IEC 61508 for SIL-1 rating; and full 2-year
warranty to all customers.

The new ST51A, ST75A and ST75AV flow meters feature FCI’s thermal
dispersion sensor technology, which relies on the relationship between flow
rate and cooling effect for direct measurement of mass flow. Their flow sensing
elements feature precision platinum RTDs in small diameter, all-welded
thermowells made of 316L stainless steel and Hastelloy-C tips to provide
superior accuracy, fast response and long-term reliability. Being direct mass
flow measuring instruments, these flow meters don’t require additional
temperature or pressure sensors or flow computer to infer the mass flow rate of
the process media, reducing the total cost of process flow measurement.

Model ST51A Air/Gas Flow Meters

An insertion-style flow meter to suit pipe diameters of 2.5-24 inches (63-610mm),
the ST51A is specifically designed for flow measurement of methane-based gases
such as biogas, digester gas, landfill gas and natural gas as well as air,
compressed air and nitrogen. Easily connected into the pipe via a 0.5-inch or
0.75-inch NPT compression fitting, these thermal flow meters measure from 0.08
MPS to 122 MPS with turndown ratio of 100:1 and accuracy of ±1 percent reading,
±0.5 percent full scale.

Model ST75A and ST75AV Air/Gas
Flow Meters

Featuring an in-line (spool-piece) style for applications in smaller
pipe diameters of 6-51mm, the ST75A and ST75AV flow meters measure flow rate
and totalised flow of air, compressed air, inert gases as well as natural gas,
biogas and other hydrocarbon-based gases, making them ideal for burner-boiler
fuel and air lines, industrial furnaces and kilns, chiller air flow metering,
and dosing and gas injection.

Process connection options include male NPT, female NPT and ANSI or DN
flanged. Model ST75AV includes built-in Vortab flow conditioning to ensure high
accuracy and repeatability in applications lacking sufficient straight-run. A
wide 100:1 turndown ratio and ability to measure from 0.01 NCMH to 950 NCMH
with accuracy of ±1 percent reading, ± 0.5 percent full scale are some of the
other features.

Visit www.ams-ic.com.au for more information or
contact AMS Instrumentation &
Calibration Pty Ltd on 03-9017 8225 or Freecall (NZ) 0800 442 743.

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