PCB Test & Measurement Seite 37

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For Additional Specification Information Visit www pcb com PCB PIEZOTRONICS INC 716 684 0001 Fax 716 685 3886 35 Special Purpose Instruments ICP Mechanical Impedance Sensor Model 288D01 Mechanical Impedance Sensor simultaneously measures an applied driving point force and response acceleration of a test structure for determining parameters such as mechanical mobility and mechanical impedance The unit consists of a precision shear mode accelerometer and a quartz force sensor in a common housing Installation is primarily facilitated at the structural excitation points in series with a stinger and vibration shaker Applications Structural Testing Modal Analysis Highlights 100 mV g 10 2 mV m s2 acceleration sensitivity 100 mV lb 22 4 mV N force sensitivity 0 7 to 7000 Hz frequency range 19 2 gram weight Back to back Comparison Calibration Standards Back to back comparison calibration standard accelerometers permit NIST traceable calibration of accelerometers and other vibration sensors by the reference comparison method The back to back reference calibration accelerometer is mounted to a mechanical exciter and the sensor to be calibrated is installed onto its surface The output signals from the reference standard and transducer under test TUT are compared permitting sensitivity frequency response and phase response verification of the tested unit Frequency and amplitude inputs to the exciter can be varied to suit the desired test parameters Included are interconnect cables and a dedicated signal conditioner for use with the reference standard to ensure a precise sensitivity at a common reference frequency A variety of mounting studs and an NIST traceable calibration certificate are also provided Readout instruments shakers and their controllers are not included Models Model 394A10 1 4 28 threaded mounting hole Model 394A11 10 32 threaded mounting hole Highlights 100 mV g sensitivity 0 5 Hz to 10 kHz 5 frequency range 85 to 264 VAC 47 to 440 Hz powered Optional battery powered Portable 1g Handheld Shaker Model 394C06 handheld shaker is a small self contained battery powered vibration exciter specifically designed to conveniently verify accelerometer and vibration system performance It accepts sensors up to 210 grams in weight and delivers a controlled 1 G mechanical excitation Ideal for conducting on the spot sensor sensitivity checks identifing channels for multi point data acquisition performing end to end system troubleshooting and confirming system gain settings Total weight including mounting hardware and cable influence Highlights Provides mechanical excitation at 1 g rms or 1 g pk Fixed 159 2 Hz frequency Powered by four AA alkaline batteries included Automatic shut off for continuous operation Mechanical stops protect from overload Optional AC power adaptor Model 073A16 Alternate Metric Model M394C06 offers 10 m sec2 excitation 3 T Mcatalog 2011 Seite 33 48 A4 F G500 21 04 11 09 26 Seite 35