AMS releases flow meters for plant HVAC

AMS Instrumentation and Calibration introduces a new range of flow
meters from Fluid Components International (FCI) designed for plant engineers
to optimise the fuel-to-air ratio for boiler control in plant HVAC systems
while reducing plant fuel costs and protecting the environment.

FCI’s new ST98 air/gas flow meter offers a natural gas flow measurement
solution for facility engineers to monitor and control the precise amount of
fuel needed to run HVAC boilers efficiently. Careful monitoring of the natural
gas flow of plant HVAC system boilers minimises fuel consumption, lowers plant
energy costs and reduces pollutant emissions.

The thermal mass flow sensor design of the ST98 flow meter provides
direct mass flow measurement without the need for additional temperature or
pressure sensors and density calculating devices. It not only saves plant space
but also eliminates the time and cost needed to install these extra devices. The
insertion style configuration of ST98 flow meters makes them easy to install in
existing piping without cutting the pipe or welding, offering minimal
interruption to plant operations.

The flexible and dependable ST98 flow meter is suitable for service in
plant natural gas and numerous other process gases, hydrocarbon mixed or dirty
gases, biogases including methane, and plant compressed air and HVAC systems. These
flow meters find application in industries such as electronics, oil and gas,
chemical, power generation, food and beverage, pharmaceutical, pulp and paper,
steel and wastewater treatment among others.

Key features of the ST98 flow meters include advanced thermal mass
sensing element providing accurate flow measurement over a wide flow range; accuracy
±1% of reading, plus ±0.5% of full scale; repeatability to ±0.5% of reading; flow
range from 0.21 to 172 NPS in air at standard conditions; and thermal mass flow
sensing element constructed with two all-welded 316L stainless steel
thermowells, protecting two matched platinum precision RTDs.

The ST98 meter’s transmitter converts the differential temperature
signal to a standard 4-20 mA output signal. The meter’s transmitter with its
RS232C communications port is housed in either a NEMA Type 4, Type 4X (IP66)
enclosure or an explosion-proof enclosure and can be integrally mounted to the
flow element or remotely mounted up to 500 feet away. An LCD display screen
indicating flow rate, temperature and totalised flow is also optionally available.

Since the ST98 flow meter does not feature moving components, it is unaffected
by plant vibration and not exposed to damage. The highly stable flow sensor
also virtually eliminates maintenance or recalibration, making it a lowest
total cost flow measurement solution over its long service life.

The highly safe and reliable ST98 flow meter features a broad range of
agency approvals including FM, ATEX, IEC, CSA, CRN, GOST/RTN, NEPSI, CPA, PED
and CE Mark (system approvals). It also complies with the Canadian Electrical
code’s requirements for ANSI/ISA 12.27.01-2011 as a single seal device.

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