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.
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
Accuracy: +/- 0.5% Full Scale over -40C to 105C includes Repeatability, Hysteresis and Linearity
Operating Temp: -40C to 105C / -40F to 221F
Burst Pressure: 500PSI
Response Time: < 1ms
Vibration:100 to 2000Hz, 20g Sinusoidal, 3 Axes
Sensor Body: Stainless Steel
Wetted Materials: 304L & 316L Stainless Steel
Thread: 1/8" NPT Male Thread
Weight: < 85 Grams
Output: .5 to 4.5Vdc Linear
Elec. Termination: Integral weatherproof connector, includes mating connector, pins & pin lock
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