PCB Piezotronics Inc., Depew, NY, offers Model 483C30 and Model 481A03 rack-mounted signal conditioners, available with isolated grounds or selectable filters, respectively, and suited for applications where case ground piezoelectric sensors could cause ground-loop noise. The Model 483C30 features 8 channels with true galvanic isolation of each input to output; selectable on/off per channel; a choice of ICP, charge, or voltage inputs; charge input sensitivities of 0.1, 1, or 10 mV/pC; incremental gain (x 0.1 to x200); internal/external calibration; 4th order 10 kHz low-pass filter; and Ethernet interface. The Model 481A03 features 16 channels of ICP input with programmable 8th order elliptical low-pass filters, incremental gain (x0.0025 to x200), internal/external calibration, programmable overload threshold, and RS-232 interface.
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