Model 334A is a general purpose tri-axial IEPE accelerometer permitting low frequency vibration measurements. 334A features an annular shear ceramic crystal which exhibits excellent output stability over time. The accelerometer incorporates an internal circuit with in a two-wire IEPE system which transmits its low impedance voltage output through the same cable that supplies the constant current power. Signal ground is internal shielded and isolated from the outer case of the unit. Polarity inversion protection for the amplify circuit is inherent in the circuit design. The welded stainless-steel construction provides a hermetic housing. Integrated cable provides long-term reliable performance over the operating temperature range. In addition to adhesive mounting, 334A offer Ø6.4 central through holes for screw mounting on the test object, cable outgoing direction can be discretional for install convenience. The 334A provides low frequency response and shock resistance, which is ideal for high structure vibration monitoring under incidental shockenvironment .