The WPK-633 Outdoor Noise Kits can be supplied with any of the CEL63x range of sound level meter, from the lowest cost CEL632A2 to the top specification CEL633C1. The main decisions to make are:
Our recommendation is to have either of the following.
This defines the accuracy of the sound level meter in accordance with the ANSI S1.4 standard. Also referred to as "Class 1" or "Class 2" by the newer IEC 61672 standard. Although these standards are not identical, all the Type 1 meters mentioned here also meet IEC 61672 to Class 1. And the same for Type 2 / Class 2.
Many environmental noise regulations demand the use of a Type 1 / Class 1 integrating sound level meter. If your regulations or standards do not demand this then you can use Type 2, which costs a little less.
Our recommendation for environmental noise monitoring is to use Type 1. These microphones have a higher sensitivity and will measure lower sound levels, which can be important in quieter environments and at night.
Both of the meters that we recommend, the CEL633A1 and CEL633C1 are Type 1. Please contact us for a quotation for a Type 2 Outdoor Kit.
The lower cost CEL632 range of meters are very similar to the CEL633 range, but do not have the additional environmental noise parameters (such as LA10 and LA90), and do not have the advanced timers. For some applications this is not an issue, so the lower cost CEL632 might be suitable. If you are unsure then please contact us for advice as most environmental noise applications will require the additional features.
If you choose the CEL632 model then we can always upgrade it later to a CEL633 model.
Both of the meters that we recommend, the CEL633A1 and CEL633C1, include these environmental parameters and automatic timers. Please contact us if you need a quotation for a kit with the lower cost CEL632 range of meters.
The "C" version of the meters have real-time Octave and 1/3 Octave Band Filters. These may be required for the analysis of tonal noise in some applications. This will be laid out in the regulations you are working to (if any exist). If you have any doubt then please contact us for advice.
If you are unsure then we can easily upgrade the CEL633A1 (without filters) to the CEL633C1 (with filters) without you having to return the equipment to us - we just send you a small program and access code to carry out the upgrade yourself.
These Outdoor Kits include the Meter, Calibrator, Case, Outdoor Microphone, Tripod, Software and all cables.