©2011 John Sherman Agencies Ltd. Model ST173 Sound Level Data Logger The ST713 Sound Level Data Logger can be used in the USB port of any Windows® based PC, to set time, date and logging interval, then can be left as a stand alone device to record sound levels over the specified period of time. After logging has completed, data may be downloaded and viewed as a graph. Features: • Conforms to IEC61672-1 Class 2 sound level meters • 1/2" electret condenser microphone • A and C frequency weighting • Fast and Slow time weighting • Normal (average of 20 data samples) and Peak modes • Max and Min measurements • User selectable sampling intervals • Data storage capacity of 129,920 samples • Integral USB port - data logger plus directly into your computer without wires or cables • Includes: Microphone windscreen, transparent cap, software CD, metal support stand and battery Specifications: Measuring Range: 30 to 130 dB Dynamic Range: 50 dB Accuracy: ±1.4 dB Frequency Range: 31.5 Hz to 8 kHz Time Weighting: Fast: 125ms; Slow: 1s Sampling Intervals: Selectable from 1 second to 24 hours Power Supply: 1 x 3.6V battery Battery Life: Approx. 200 hours Dimensions: 144 x 27 x 14mm For further information, contact: John Sherman Agencies Ltd. 1641 Venables Street Vancouver, BC V5L 2H1 Canada Phone: 877-251-9622 or 604-254-9622 Fax: 604-254-3123 email: info@johnsherman.com www.johnsherman.com