EXTECH407750DigitalSoundLevelMeter数字式分贝计/声级计/噪音测试仪Features:•Auto/Manualrangingfrom30to130dBin6ranges•MeetsANSIandIECType2standa***•AandCselectablefrequencyweightings•FastandSlowselectableresp***etimes•Backgroundnoiseabsorbermodeformachinenoisemeasurementsfiltersambientnoise•Large31/2digitdisplaywith0.1dBresolutionwithbacklightingandanalogbargraph•Electretcondensermicrophoneprovides1.5dBaccuracy•Min/Maxplusanalogoutputandtripodmount•MaxHoldlatchesmaximumvalueondisplay•RS-232interfaceforcapturingdatadirectlyonaPC,optionalWindows®compatiblesoftware•CompletewithbatteriesandcarryingcaseApplicati***:•Machinenoiseevaluation•OSHAcompliancetesting•Communitynoisemeasurement•Noiseordinance•PCinterfacefordatacollectionSpecificati***DigitalDisplay3-1/2digit(1999count)AutorangeLCDBargraphDisplay50dBdisplayrange(1dBresolution);MeasurementRange30to130dB(35to130dBfor“C”weighting)Resolution0.1dBAccuracy&plu***n;1.5dB@94dBfora1kHzsinew***eMicrophoneElectretCondensor.24"(6mmdia.)typeFrequencyWeighting“A”and“C”typeTimeResp***eSlow/FastSamplingtimeupdatesevery0.5secondsMeasurementfrequencyrange31.5Hzto8KHzAnalogoutputAC:0.707Vrms(fullscale);DC:10mVDC/dBApplicableStanda***IEC651Type2,ANSIS1.4Type2PowerSupply9Vbattery,optionalACadaptorDimensi***10x3.1x1.5"(256x80x38mm)Weight8.5oz.(240g))