Processing Magazine

Immersible thermal mass flowmeter available in special high-temperature option

March 10, 2009
Popular in heavy industry, the thermal mass flow meter is designed for the most demanding industrial flow measurement applications. Constructed of heavy-duty 316 stainless steel wetted materials, the high-temperature version of the unit includes remote-mounted electronics and mineral-insulated cabling resistant to very high temperatures. The meter is already in use in such critical applications as electrical power generation, stack gas measurement, petrochemical refining and steel making. One such application is in coal-fired power plants, where combustion air is pre-heated to temperatures approaching 500°F (260°C) prior to it being mixed with the pulverized coal and burned in the boiler to produce steam for electricity It is critical that the preheated air mass flow rate be measured very accurately in order to obtain efficient combustion. The Model 640S now meets this challenge with high accuracy, easy installation, and low maintenance in a rugged, explosion-proof package. All of Sierra’s flow meters are calibrated to exacting customer specifications at Sierra’s calibration laboratories and are directly traceable to NIST and compliant to ANSI/NCSL Z540 and MIL-STD-45662A and certified to ISO 9001 standards.