Differential pressure flow meter SEMTECH® EFM-HS
pitot tubevolumefor exhaust gas

Differential pressure flow meter - SEMTECH® EFM-HS - Sensors Europe - pitot tube / volume / for exhaust gas
Differential pressure flow meter - SEMTECH® EFM-HS - Sensors Europe - pitot tube / volume / for exhaust gas
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Characteristics

Technology
differential pressure, pitot tube
Type
volume
Fluid
for exhaust gas
Installation
in-line, flange, clamp-on, portable
Protection level
rugged, rugged, weather-resistant
Applications
for low flow rates, for high flow rates, laboratory, for harsh environments
Other characteristics
high-accuracy, stand-alone
Mass flow rate

Max.: 4,000 kg/h
(8,818.49 lb/h)

Min.: 7 kg/h
(15.43 lb/h)

Process temperature

Max.: 700 °C
(1,292 °F)

Min.: -5 °C
(23 °F)

Description

This high-speed exhaust flowmeter samples the four differential pressure transducers at up to 2500 Hz, accurately capturing every forward and reverse flow pulsation from idle to maximum flow rate. Embedded calibration coefficients are recognized at installation, for plug-and-play capabilities, enabling the use of multiple tubes on a single control module. A proprietary algorithm computes a spline fit of the differential pressure signals, and calculates a running square-root average that is used to determine output flow rates at 5 Hz (500 Hz with the high speed option). The high-speed sampling and symmetrical design of the averaging pitot tube provides the EFM-HS with the ability to accurately measure reverse flow due to engine pulsations, and to properly account for this phenomenon in the average flow rate determination. Features - Available in 8 tube sizes for engines ranging from 0.8L to 24L - Software controlled back purge pump keeps contaminants and condensation from the pressure lines without dismantling - Auto zero - Rugged construction allowing for use in harsh environments - Heated components prevent condensation and freezing in cold weather Specifications Power: 12VDC, 30W; 110VAC Control Module Size (L x D x W): 36 x 18 x 10 cm Control Module Weight: 4 kg

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.