Description : This product adopts piezoelectric effect of artificial polarrized ceramic ford esign.It is suitable for monitoring all kinds of vibrating mechanical facility,specially the vibration measurement of rotating machinery. Specification : Item specification Vibration pickup : piezoelectric ceramic accelerometer(shear-type) Product name : Vibration Meter measurement range of acceleration : 0.1~199.9m/s⊃2;peak measurement range of displacement : 0.1~199.9mm/s rms Measurement range of displacement : 0.001~1.999mm p-p Velocity and displacement range is limited by acceleration 199.9m/s⊃2; measurement accuracy : ±5%±2digitals measurement frequency range of acceleration : 10Hz~1KHz(LO)1KHz~15KHz(HI) measurement frequency range of velocity : 10Hz~1KHz(LO) measurement frequency range of displacement : 10Hz~1KHz(LO) Display update cycle : 1second LCD display : 3-1/2digital display single output : AC output 2VPeck(display full scale)load impedance 10k or more earphones can be connected Power supply : 9V Alkline Battery(no include) static current : <=20uA Operating current : <=25mA Battery life : 20 hours continuous use Auto power-off : turns off automatically in 60 seconds LCD backlight : 7 seconds Operating temperature range : 0~40C Operating humidity range : 30~90%RH low battery indication : 6.9v±0.2V Dimensions : 67*30*183mm weight : 182g