ST98HT air/gas flowmeter

Model ST98HT Mass Flow Meter is for extreme process air/gas temperatures up to 850°F (454°C) and provides highly accurate flow measurement with superior repeatability. The multi-function ST98HT measures air/gas mass flow rate, totalized flow and temperature in a single instrument. It supports a wide range of critical applications in electric power generation, chemical refining, steel production and other processes with high temperature air or gas flows. With its precision temperature-compensated thermal mass flow sensing element and advanced electronics, the ST98HT combines high performance with rugged packaging, ease of installation and low maintenance to reduce instrument total life cycle costs. In coal-fired power plants, for example, the ST98HT Flow Meter measures pre-heated primary and secondary combustion air flows to the coal-fired furnace-boiler units as well as high temperature exhaust gas flow. The boilers generate steam that drives turbines to generate electricity for residential and commercial use. In the chemical industry, the ST98HT performs flow monitoring and reporting in the highest temperature specialty production processes and off-gas applications. For steel production, the ST98HT measures air and fuel gases flows to smelters and ovens as well as flue and stack gases. The ST98HT Flow Meter is an insertion-style flowmeter suitable for pipe sizes from 2.5 inches to 120 inches (63 mm to 3048 mm). This meter is designed with a direct mass flow sensing element that is accurate to ±1% of reading, plus ±0.5% of full scale, and repeatability of ±0.5% of reading. It operates over a broad flow range from 0.75 to 600 SFPS (0,21 to 172 NMPS) with an exceptionally wide turndown ratio up to 100:1.