New switch for continuous flow verification in demanding processes

Engineers challenged by demanding high-temperature, high-pressure
processes that require continuous verification of flow and/or control of air,
gases and liquids now have a precision, rugged and reliable solution with full
global approvals to maintain a safe work environment.

The advanced FLT93F FlexSwitch from Fluid Components International (FCI)
is an insertion-style switch for flow, level and temperature monitoring and
control, representing a true technological breakthrough in thermal measurement
technology. FCI is the only thermal manufacturer providing temperature
compensation to ensure set point accuracy for process temperatures that
vary up to 37.7¡C, which ensures performance that you can count on.

The SIL-2 rated FLT93F FlexSwitch is designed for fast response to
perform an extensive list of critical air/gas flow application tasks that meet
the needs of a wide range of process and manufacturing industries. Highly
accurate, the FLT93F is ideal for use in ventilation air flow, purge gas
assurance, gas analysers and sampling systems, inert gas tank blanketing, hydrocarbon
gas flows, high-pressure relief valve monitoring and much more.

Featuring FCI’s advanced thermal sensing technology, Model FLT93F
combines a highly accurate, all-welded stainless steel sensing element with an
advanced, user-friendly FlexSwitch control circuit. One standardised,
field-configurable FlexSwitch control circuit satisfies virtually any
combination of flow, level and temperature application requirements.

The dependable FLT93F FlexSwitch offers a fast response time as low as
0.5 seconds and is suitable for small process connections in lines available in
standard lengths from 30-457 mm and in custom-specified lengths as
well. This instrument is easily field-configurable or factory preset,
providing unparalleled flexibility, accuracy and stability for all
multi-process sensing and switching requirements.

The FLT93F FlexSwitch is highly accurate in continuous air/gas flow
verification applications and in liquids too. Air/gas service accuracy is: ±
0.5% reading or ± 0.06 nmps – whichever is higher. In liquids, accuracy is ±
0.5% reading or ± 0.012 mps – whichever is higher. For temperature service,
accuracy is ±1¡C with repeatability of ± 0.6¡C.

The versatile FLT93F FlexSwitch operates over a wide setpoint range. In
air/gas, the setpoint range is 0.08 to 37 smps at standard conditions of 21.1¡C
and 1.013 bar(g). The setpoint range in water-based liquids is 0.003 to 0.9
mps, and in hydrocarbon-based liquids it is 0.003 to 1.5 mps.

The FLT93F is available with either integral electronics or remote
electronics for use in hazardous areas where the transmitter electronics must
be separated from the instrument. The standard transmitter features dual SPDT
or single DPDT relays that are field configurable and 6-amp resistive at 115
Vac, 240 Vac or 24 Vdc.

The standard enclosure for the FLT93F FlexSwitch comes in aluminium,
which is powder coated, with a single one-inch NPT conduit port. The
weather-resistant enclosure is rated NEMA 4X/IP67, Ex approved, and suitable
for outdoor use. A stainless steel enclosure or a dual-conduit port aluminium
enclosure with 0.5-inch NPT or M20 metric conduit ports is optionally available.

Global agency approvals and compliances for the Model FLT93F FlexSwitch
include: FM, FMc, ATEX, IECEx, EAC/TR CU, Inmetro, CE mark, PED and CRN. It
also meets EC directives for EMC and LVD. The probe complies with Canadian
Electrical code requirements of ANSI/ISA 12.27.01-2011 as a single seal device.

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

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