Castle Datalogging Sound Level Meter, 35dB to 140dB, 20kHz max

IEC 61672-1:2002 Class 2, IEC 60651: 1979 Type 2. Castle GA216B Sonus Class 2 Sound Pressure Level Meter (non data logging version). Castle GA216B is designed for general survey health ; safety and engineering applications by industrial safety officers, occupational nurses, fire alarm installation ; test engineers and industrial engineers. It gives clear results which meet the requirements of international standards. GA216B is a Sonus range entry-level Type 2 sound meter fully compliant with IEC 61672-1:2002. The difference between Type 1 and Type 2 is in the tolerance, for example: at reference frequency 1kHz, tolerance is ±1.1dB (Type 1) and ±1.4dB (Type 2); at 20Hz, tolerance is ±2.5dB (Class 1) and ±3.5dB (Class 2). Compliance with IEC 61672-1:2002 Class 2 and IEC 60651:1979 Type 2 is necessary for carrying out most noise assessment tasks in industry. Sound Pressure (Lp) to 0.1 dB resolution 'A' and 'C' frequency weighting (toggle) 'Slow' and 'Fast' Time weighting (toggle) Simultaneous measurement of Lp, Lmax, and Cpeak Lmax - maximum Lp hold (rms) Cpeak - maximum peak level Elapsed time (running time hrs, min, sec) Over Load and Under Range indication Housed in tough, crack-resistant ABS plastic Dimensions 60mm x 30mm (excluding pocket clip) x 135mm (210mm with microphone) Weight 200g (without battery)