This is our lowest cost environmental sound level meter that includes the usual noise measurement parameters that are needed. It is intended for basic environmental noise surveys, using the meter hand-held or short term on a tripod.
Although we have more advanced environmental sound level meters (such as the CEL633), not all applications demand such an advanced meter. The CEL621 provides you with the expected noise measurement parameters, such as periodic Leq and Ln (percentiles such as L10, L50, L90, etc.). These measurements are stored in the meter's memory and can be downloaded to a computer using the Insight software, described below.
The limitations of this lower cost meter are its lack of time history store (graph of sound level over time when downloaded) and the fact that it has a fixed preamplifier (cannot take a microphone extension cable for installation in a weatherproof kit).
In summary, this meter is for attended noise monitoring, either hand-held or mounted on a tripod. In these situations you often do not need the detailed time history or the ability to fit a microphone extension cable.
This is still a true Class 1 or Class 2 sound level meter and there are no limitations when it comes to acoustic performance.
If you need a meter that has more detailed logging, automatic timers and removeable preamplifer then please have a look at the Advanced Environmental Sound Level Meter CEL633.
The CEL621 comes complete with data logging capability. Measurements are stored in the meter's internal memory. When connected to a Windows computer, the meter acts like a memory card (shows as a removable drive) so the measurements can be loaded into a spreadsheet or moved to your hard drive for long term storage. There is no need to buy an install special software, which can be a real benefit on a company networks where installation of software is not encouraged.
If you want a little more than just loading the measurements into a spreadsheet then the Insight software simplifies the process of downloading the measurements, storing them in a database, managed by person, place or process criteria. To get the Insight software for the CEL621 include item ISC020 with your order.
|CEL621 Sound Level Meter Datasheet (PDF, 740k)
CEL120 Acoustic Calibrator Datasheet (PDF, 423k)
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