This Sound Level Meter or datalogger has bigger 30-130dB range with built-in mic, 94dB at 1kHz (sinusoidal) calibration signal and offers 4 measurement parameters Lp, Leq, Lmax and LN. Aside from the meter's 30 memory groups it is also capable to transfer data from meter to computer directly complete with real time and date stamp via RS-232C software. A DC output jack is also added to the device for use of analyzer, recorder and other similar devices that can be plugged into the port. It has the approval European Directives for health and safety required standards and comply with GB/T3785, IEC 651 Type 2, and ANSI 1.4 Type 2. Useable for a very broad field of application such as machines, traffic, vehicle, architecture acoustics, environment noise and electric noise, ship, office environment, workshop, flight and other noise. Fit for industry environment protecting, working, sanitation, teaching research and other departments. . Quality Conforms with all the essential health and safety standards & requirements set out by the European DirectivesIEC651 Type 2, ANSI 1.4 Type 2 and GB/T3785 compliantApproved by strict qualityHigh accuracy and unquestionable performance Special Features Multifunctional with built-in condenser mic30-130dB range with built-in 94dB at 1kHz (sinusoidal) calibration signal4 measurement parameters Lp (sound level)Leq (equivalent continuous A sound)Lmax (maximum sound level)LN (percent of all readings over alarm value set)With A, C and Flat weightingSlow / Fast response time30 memory groupsHigh resolutionAllow saving, retrieving and deleting of dataSave or downloaded data to computer directly (can be exported to MS Excel)LED alarm output and programmable auto power off & audio alarm0-1.3V, 10mV/dB DC output and auto range selectionDelivers ultra accurate reading with no guessing errorsInstant, clear and easy to read resultsAdjustable auto power off, value can be change between 1-9min (can be manually turned off anytime)Comes complete with CD software for RS232C interfaceRS232C Jack to Serial CableFREE USB to Serial AdapterWindscreen Filter Ball to filter-out unwanted signals/noiseInstruction manualHard plastic carry case with padded & contoured interior Specifications Standards: GB/T3785 , IEC651 Type 2 , ANSI S1. 4 Type 2PC interface: CD Software + RS232C Jack-to-Serial Cable (includes FREE Serial to USB Adapter)Function: Lp, Leq, Lmax, LN.Parameters measured: Lp, Leq, Lmax, LN.Measurement range: Lp : 30~130dB (A) , 35~130dB (C) , 40~130dB (F)Leq : 30-130dB (10s, 1m, 5m, 10m, 15m, 30m, 1h, 8h, 24h interval)LN: 0-100%Resolution: 0.1dBAccuracy: ±1dB Frequency range: 20.0 to 12,500HzFrequency weighting: A, C and F (Flat)Built-in calibration signals: 94dB at 1kHz (sinusoidal)Memory: 30 groups max with measuring conditions and with Date and Time StampingTime weighting: FAST 125mS , SLOW: 1 sec.DC output: 0~1.3V, 10mv = 1dBMicrophone: 0.5" Electret condenser microphoneDisplay: 14mm (0.55") LCD Screen with backlightBuilt-in battery condition indicatorAlarm: electron, adjusable, 30-130dB set, LED and optional relay contact (NC) outputPower off: Manual or adjustable Auto Power off timePower supply: 4 x 1.5v AAA Battery or External 6V DC 100mA (not included)Size: 236 x 63 x26 mmWeight: 170g (excluding batteries)
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