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MB-LPS ΔP Sensors' High Flow Impedance, Use With Connection Hoses, and Immunity to Dust Contamination

Authored on: Dec 16, 2009

Technical Paper / Application Note

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MB-LPS differential pressure (ΔP) sensors are experimentally compared to other sensors which use the same (thermal-anemometer-based, non-membrane) sensing principle, where differential pressure is inferred from tiny gas flows through a flow channel.

Question: Does this flow-through render such sensors prone to degradation in dusty environments?

Answer: Only if the sensor's flow-through impedance isn't high enough!

Test: MB-LPS sensors are compared in parallel with competitors' sensors at a common differential pressure.

Result: All competitors' sensors, (all of which have flow impedance much lower than MB-LPS), went out of calibration, or failed entirely, while MB-LPS stayed in calibration.

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