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Sper Scientific - Model 840029 -Digital Type 2 Sound Meter
Perfect for testing for OSHA requirements. Meets IEC 61672 class 2 and ANSI S1.4 type 2 frequency and time weighting specifications. Offers a wide variety of measuring options including `A` and `C` decibel frequency weighting scales, fast or slow response, AC or DC output and peak function. The large display has a resolution of 0.1 dB and also indicates low battery, and over or under load. Covers 30 ~ 130 dB in the `A` scale and 35 ~ 130 dB in the `C` scale, with an accuracy of ±1.5 dB. Can be easily calibrated using the internal oscillation system. CE Approved. Has a fold out tripod stand and comes with carrying case, instructions, windscreen, calibration tool, and a 9V battery. N.I.S.T. traceable certificate of calibration available. Dimensions: 8½` × 3⅛` × 1⅜` (216 × 80 × 35 mm). Weight: 10 oz (283 g).
ANSI S1.4 Type 2
Specifications for Sound Level Meters
The American standard for sound level meter performance. Very similar to IEC 60651. Grades in order of accuracy: Type 1, Type 2
IEC 61672-1 Class 2.
Electroacoustics - Sound level meters
This is the most recent sound level meter standard and the one that modern measurement regulations will require. Grades in order of accuracy: Class 1, Class 2
Certificate of Calibration Traceable to N.I.S.T. (optional)
Specifies that the standards against which the product has been certified or calibrated were themselves calibrated by the National Institute of Standards and Technology (N.I.S.T.), or with N.I.S.T. calibrated equipment under conditions specified by N.I.S.T.