Stainless Steel Sensor Kit (100 PSIa / 7 Bar) by AEM Electronics AEM offers high quality stainless steel PSIa sensors in 15 (1BAR), 30 (2BAR), 50 (3.5BAR), 75 (5BAR) and 100 (7BAR). PSIa is referenced to absolute zero. Absolute zero is the pressure measurement when all the pressure exerted by the atmosphere has been removed. The most common use for absolute pressure sensors is reading manifold pressure. PSIa sensors are required if you wish to measure vacuum. A PSIa sensor will read about 14.7 PSI when the sensing element is exposed to atmospheric pressure at sea level however they can be recalibrated to read zero at atmospheric and a negative number at values less than atmospheric pressure. Use a SS Pressure Sensor where you need exact details of the pressure. Features Stainless-steel sensors accurate to within 1% of full scale (pressure sensors) High-quality sealed sensor housings are virtually impervious to automotive fluids (360-degree welded wetted area) Connector and pins included Applications Universal What’s In The Box? 1 – 100 PSIa (7 Bar) Stainless Sensor 1 – 1/8″ NPT to -4 Adapter 1 – 1/8″ NPT to 3/16″ Barb Adapter Connector and Pins References Installation Instructions Warranty Manufacturer Standard Warranty