Extech SDL600 Sound Meter SD Logger, 0.5" Diameter

Sound Level Meter meets ANSI and IEC 61672-1 Type 2 standards. It has three measuring ranges from 30 to 130 dB with 1.4 dB accuracy. In addition to the LCD digital display, an analog bargraph provides easy viewing of fast changing sound levels. Features include: selectable Frequency Weighting ('A' and 'C'), selectable Response Time (Fast and Slow), maximum/minimum Hold, Auto Power Off, AC/DC analog outputs, and a rugged double molded housing with built-in stand. The meter has a datalogging capability of up to 20,000 records with user-settable sampling rate from 1 to 59 seconds. Readings are displayed and recorded with real date and time stamp. Meter comes complete with USB cable, Windows compatible software, windscreen, tripod, hard carrying case and 9-volt battery. Model HD600-NIST is also available with a Certificate of Calibration Traceable to NIST.

1 kHz 94 dB professional sound calibrator for 0.5-inch or 1.0-inch microphones calibrates and verifies sound level meter operation. Battery test position with battery status LED indicates if battery is good. Durable die-cast aluminum housing generates a 1 kHz sine wave at 94 dB to an accuracy of 5 percent (frequency) and ±0.5 dB (94 dB). Meets IEC standard 60942 1997-11 and comes complete with two 9-volt batteries, carrying case, and screwdriver. Model 407744-NIST is also available with a Certificate of Calibration Traceable to NIST.