High-speed flowmeter

  • 06-Jul-2009 12:09 EDT

Sensors’ high-speed exhaust flowmeter, the Semtech EFM-HS, adds capabilities and features to the product line. With a sampling rate of up to 2500 Hz and four dual-stage differential pressure transducers, the EFM-HS measures forward and reverse flow pulsation from idle to maximum flow rate and accounts for these pulsations in the exhaust flow determination, offering an advantage over low-speed exhaust flowmeters susceptible to measurement error from high frequency pulsations. The EFM-HS also features a -5 to +700°C (+23 to +1292°F) exhaust temperature range with higher temperature capability available upon request. Mass flow rate accuracy and linearity exceed performance standards over a 50:1 turndown ratio. The EFM-HS can be used to measure exhaust flow rate from both spark and compression ignition engines, as a stand-alone device or in conjunction with the emissions measurements of other gas analyzers, to compute real-time mass emissions.

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