. KE-TECH Kft. 1183 Budapest, ll i t 470. testo 815 / 816 Tel.: (1) 290-0151, Fax: (1) 292-2159 E-mail: ketech ketech.hu, www.ketech.hu Measuring Sound Level from 30...130 dB Sound level measurement To DIN/IEC 60651, Class 2 dB. Real-world Sound Level Measuring Instruments Whether at a working place , in machine halls, offices, in discotheques or in the environmental field, it is important to control sound levels, which is often prescribed. testo 815 and 816 are easy to operate, precise sound level measuring instruments of the accuracy class 2. A calibrator for controlling and calibrating can be ordered as an accessory. The Parameter Sound Next to the human eye the human ear is the sense organ used threshold of pain the most. Due to sound occurences in our ambience - be it a tone, music, bird twittering or machine noise - we participate start of yet planes in our ambience via the ears. The ears are a precious sense jack hammer organ, which is necessary to be protected. Especially in the job-related everyday life, sound is generated by machine noise trucks in a way we sense as disturbing. Everybody knows, noise and sound occurences, which are too loud on a continuing basis office can damage the ear permanently. The new sound level measuring instruments testo 815 / 816 are modern sound library level measuring instruments, which allow us to measure and evaluate sound, noise or pure tones. forest hearing limit testo 816 The instrument for evaluators, workplace measurements and measuring industrial and environmental noise. The bigger model offers additional features compared to the testo 815, which predestine it especially for evaluators, workplace measurements and measuring industrial and environmental noise. time weighting part of meas. range frequency weighting Additional benefits of testo 816: present reading Automatic range switchover Backlit display Mains unit connection BarGraph display AC output to connection from recorders and amplifiers DC output with 10 mV/dB to connect recorders or dataloggers Max / Min memory frequency weighting A/C automatic range switchover On /Off key time weighting Fast / Slow backlit display On / Off analog output AC/DC easy calibration with screwdriver mains unit connection