SOUND LEVEL METER The Nova sound level meter can be used to make instantaneous sound level measurements, or it can be fitted with the data logging option for longer term measurements. As a hand-held meter, it measures the current sound level with Fast, Slow and Impulse time weightings, as defined in the ANSI S1.4 and IEC 61672 sound level meter standards. It also measures with A, C and Z frequency weighting. As all time and frequency weightings are carried out simultaneously in the meter, there is no pre-measurement setup to go through, just press Start and the measurement begins. The Nova Model 41 (Type 1) and Model 42 (Type 2) are for noise surveys that demand a professional grade meter that is quick and easy to use. ANSI S1.4, IEC 60804 and IEC 60651 Type 1 or Type 2 IEC 61672 to Class 1 or Class 2 Strong metal case Easily upgraded Optional data logging and software Sound Level Meter Standards ANSI S1.4 and IEC 60651:2001 Model 41 - Type 1 Model 42 - Type 2 IEC 61672-1:2002 Model 41 - Class 1 Model 42 - Class 2