Features & Applications:

This Casella data logging digital impulse sound level meter is a completely new design of sound level meter featuring the power of Digital Signal Processing (DSP) technology and the simplicity and low cost of a traditional analog instrument. It can be used for a wide range of noise measurement tasks and is suitable for many everyday tasks. Complying with all the ANSI and IEC accuracy specifications in the Type 2 category the CEL-242 will appeal to new and experienced users alike. This unit is capable of storing 419,000 data points. Data is stored as files compatible with spreadsheet software packages (.csv format) and can simply be transferred via USB then graphed as required with any standard package.

The new CEL-242 features a standard ¼” threaded socket on the back of the meter to allow it to be mounted on a tripod for fixed measurement applications. The meter is powered from 3 x AA alkaline batteries and will run for up to 35 hours on its own or continuously when powered from a mains to USB style adaptor or from a computer. Digital output via a USB mini A socket is available plus analog ac (or dc) voltage output through a 2.5mm jack socket to connect the CEL- 240 to other external computers or recorders or to the optional Windows dB24 software package.

Applications:

The CEL-242 will be an ideal instrument for industrial hygiene measurements of noise in the workplace. The meter has a low and high measurement range that covers a full 70dB on each range. It can be used for machinery noise surveys as well as all general purpose workplace noise level measurements. With the A and C frequency scales and the S, F and I time response the meter can be used to assess the right hearing protectors using the NRR method. A nondecaying maximum hold feature on every display captures and displays the highest sound pressure level of any noise until reset by the user.

Features:

• ANSI Type 2 accuracy
• 30 to 130 dB total dynamic range
• 2 x 70 dB measurement ranges
• A & C frequency weighting
• Slow, Fast and Impulse time weightings
• Measures instantaneous and maximum noise level
• Large digital display on 128 x 128 dot matrix screen
• Last 1 or 5 minute sound level trend
• Bargraph showing instant and max level
• AC output signal to other instruments
• Powered from 3 x AA batteries
• Digital output of instant sound level via USB
• Tripod socket
• Stores 419,000 data points

Specifications: