850017, Integrating Sound Datalogger850017 Includes Only:Integrating Sound DataloggerWindscreenUSB cableScrewdriver(4) 1.5V AA BateriesInstruction ManualHard carrying caseFeatures with all optional accessroies:IEC 61672:2013 Class 2 and ANSI S1.4:2014 Type 2 meterMeets ANSI S1.43:1997 and IEC 61672-3:2013 forIntegrating-Averaging Sound Level Meters.Digital and analog displays20 Hz to 8 KHz frequency range30 to 130 dB measuring rangeA/C frequency weightingFast and slow time weighting100 dB dynamic range64,000 recordsMinimum and Maximum valuesOver- and under-limit alarmsAC/DC outputAutomatic shutoff (optional)BacklightSper Scientific's Integrating Sound Datalogger measures sound pressure level (SPL) according to A or C weighting and integrates the weighted SPL over an established length of time, such as an 8-hour workday, to calculate cumulative sound exposure (LEQ). Test parameters are simultaneously displayed on a large, bright, backlit display, featuring 0.1 dB resolution and a bar graph. Up to 64,000 data records can be stored in the meter, saved, graphed, and processed on a computer through the USB interface and included software. The bidirectional USB port and software also enable control of the meter via its on-screen image. Features include SPL and LEQ sound level readings, fast and slow time weighting, A and C frequency weightings, and over-limit and under-limit alarms. A single dynamic 30 to 130 dB range eliminates the need to manually select ranges and prevents data errors during range changes in auto-ranging models. The meter complies with IEC 61672:2013 Class 2 and ANSI S1.4:2014 Type 2 meter standards. Meets ANSI S1.43:1997 and IEC 61672-3:2013 for Integrating-Averaging Sound Level Meters. Calibrate in compliance with OSHA using Acoustical Calibrator 850016.