Product category:
Flowmeters and Flow Sensors
News Release from: Fluid Components International | Subject: ST98HP and ST98UP
Edited by the Engineeringtalk Editorial
Team on 04 August 2005
Flow meters clean up on gas measurement
High purity process applications requiring precise gas flow measurement will benefit from the Flexmasster ST98 flow meter series from Fluid Components International.
High purity process applications requiring precise gas flow measurement will benefit from the Flexmasster ST98 flow meter series from Fluid Components International, which features a 316L stainless steel thermal mass flow sensing element with an all-welded, wetted surface in a 10 or 15Ra electropolish finish Designed for demanding sanitary process applications in food, beverage, pharmaceutical, biotech, and chemical plants, the new ST98HP and ST98UP flow meters support a wide range of gas flow measurement applications
This article was originally published on Engineeringtalk on 20 Jun 2007 at 8.00am (UK)
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The ST98HP high-purity/sanitary flow meter features a 15Ra electropolish finish with a 1in sanitary flange mated to a 316L inline flow tube.
The ST98UP ultra-high-purity flow meter comes with a 10Ra electropolish finish with a 1in VCR connector mated to a 316L inline flow tube.
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The 316L flow tube is available with butt weld or sanitary flanged end process connections.
The ST98HP and ST98UP flow meter's advanced thermal mass sensing element delivers precision flow and temperature measurement over a wide flow range.
It features an accuracy of +/-1% of reading plus +/-0.5% of full scale.
Highly consistent, the ST98 has a repeatability of +/-0.5% of reading.
Exceptionally versatile, the ST98 features a wide flow range from 3.4 to 5409m3/h in air at standard conditions for 21.2C and 1.01324 bar(a), typical to most gases.
The ST98 offers low-flow sensitivity yet is able to operate from 10:1 to 100:1 turndown ratio.
The ST98's thermal mass sensing element is composed of two all-welded 316L stainless steel thermowells that protect two matched platinum precision resistance temperature detectors (RTDs).
With a highly reliable no-moving-parts design, one RTD is heated relative to the reference RTD, and the temperature difference between the two is related to the process gas mass flow rate.
The ST98's transmitter converts the differential temperature to a standard 4-20mA output signal that has been linearised during the FCI factory NIST traceable calibration of the flow element.
The transmitter with its RS232 communications port is housed in a NEMA Type 4, Type 4X (IP66), or explosion-proof enclosure and can be integrally mounted to the flow element or remotely mounted up to 500 feet away.
In addition, Hart and Profibus communications and an LCD screen indicating flow rate, temperature and totalised flow are available as options.
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