Section SPS 307.43 - Instrumentation All seismographs used to determine compliance with this subchapter shall meet the following minimum specifications:
(1) Seismic frequency range: 2 to 200 Hz, plus or minus 3 Hz.(2) Acoustic frequency range: 2 to 200 dB, plus or minus 1 dB.(3) Velocity range: 0.02 to 4.0 inches/second.(4) Sound range: 110 to 140 dB linear.(5) Transducers: Three mutually perpendicular axes.(6) Recording: Provide time-history of waveform.(7) Calibration: Be laboratory calibrated as often as necessary, but at least once every 12 months according to manufacturer's recommendations.Wis. Admin. Code Department of Safety and Professional Services SPS 307.43
CR 06-120: cr. Register February 2008 No. 626, eff. 3-1-08.Amended by, CR 17-034: am. (1), (2) Register March 2018 No. 747, eff. 4/1/2018