AEM offers high-quality absolute (PSIa) brass pressure sensors, available in 30 (2BAR), 50 (3.5BAR), and 75 (5BAR) variants. PSIa sensors are referenced to absolute zero, which is the pressure measurement when all atmospheric pressure has been removed. These sensors are ideal for reading manifold pressure and are essential for measuring vacuum. At sea level, a PSIa sensor will read about 14.7 PSI when exposed to atmospheric pressure, but they can be recalibrated to zero at atmospheric pressure and display negative values for pressures below atmospheric.
Selecting the right pressure sensor depends on the required accuracy. Brass pressure sensors are like rulers in measurement—they provide a good reference but are not as precise as stainless steel sensors, which are akin to calipers. Brass sensors are perfect for applications where a general pressure reference is sufficient, such as a boost gauge for manifold pressure. On the other hand, stainless steel sensors are necessary for applications requiring precise details, like MAP sensor information for ECU calibration.
AEM’s brass sensors offer accuracy within 3% of the full scale and feature high-quality sealed housings that are virtually impervious to automotive fluids, thanks to their 360-degree welded wetted area. Each sensor comes with connectors and pins for easy installation, ensuring reliable and consistent performance in automotive applications.
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