The Series 2 and 4 pressure sensors are suited for direct-mounting on printed circuit boards or if small dimensions and low prices are required.
Series 2: The medium is acting directly on the silicon chip with contacts for the bridge. Application in dry air and athmosphere only.
Series 4: The medium acts on the rear side of the silicon chip. The pressure medium may be wet. Applications in gas, water and non-aggressive fluids with benign reference atmosphere. Ideal for underpressure measurements.