Gas Master Sensor for the ST80 Series flow meters delivers accurate, repeatable gas flow measurement in the presence of moisture and condensation droplets. Suitable for use in entrained moisture and rain-shielding applications, the WG sensor configuration features a mechanical design that shunts moisture, condensation, and water droplets away from the thermal flow sensor, thus maintaining an accurate gas flow measurement while minimizing errors from a cooling effect on the sensor that might cause a spike or false high reading, according to the company. The Wet Gas option can be used in applications that have moisture entrained in the gas (annular mist) or for protection against down-the-pipe rain in larger, vertical stacks. It relies on standard thermal constant power technology and optimizes the sensor head design and installation to minimize or prevent condensation from contacting the sensor. The sensors are suitable for pipe diameters from 1 to 99 inches (25 to 2500 mm) and air/gas temperatures up to 850 °F (454 °C). They feature accuracy of ±1% of reading, ±0.5% of full scale and repeatability of ±0.5% of reading with flow rates up to 1000 SFPS (305 NMPS) and 100:1 turndown.
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Fluid Components International