CEL-620.A Noise Measurement Kit


Casella USA, the North American subsidiary of worldwide measurement leader Casella CEL, has introduced the CEL-620.A wide range integrating meter kit offering the power of digital signal processing (DSP) and a full color LCD, along with all the components necessary for occupational hygienists to conduct a variety of challenging noise measurement surveys. The CEL-620.A provides the features of a broadband meter while simultaneously giving the user the ability to measure noise levels in whole or third octave bands across a wide range of frequencies that cover the entire audible range. As today's noise measurement requirements become more challenging, the CEL-620.A brings added ease of use to difficult situations such as those encountered with transient sources including impacts, pass-by testing of vehicles, flyover tests for aircraft, and shooting ranges. It is also a superior choice where the time average levels of varying or impulsive noises are  required, for example in a workplace noise survey for OSHA/ACGIH/NIOSH  compliance.

An ultra-wide dynamic range of 140 dB means that it is not necessary to worry about selecting the proper range as the meter is always on the right setting. Noise parameters such as the max, min, average and peak can be enabled or disabled depending upon the exact requirements of the task in hand.

Excellent for long-term noise surveys, the CEL-620.A performs real time measurements in octaves from 16 Hz to 16 kHz, and real time measurements in third octaves from 12.5 Hz to 20 kHz. Data log the results from 10 msec to 30 minutes to collect history of the level changes. All results are viewed on the high resolution LCD that uses  color as an indicator to guide the new or experienced user through the  measurement procedure.

The CEL-620.A kit includes:
CEL-620.A real time octave band ANSI type 2 meter

 CEL-110/2 acoustic calibrator
CEL-6841 foam windscreen
CEL-6840 attache style kit case
CMC51 USB pc download cable
CEL-6844 dB36 pc software
3 x AA batteries for meter, 1 x 9V battery for calibrator plus operator manuals
Casella meters are available in either ANSI/IEC Type 1 or Type 2 versions.


• Total measurement range: 20 to 140dB RMS (single range), 143.0 dB Peak • Frequency weightings RMS: Simultaneous A, C & Linear (Z) • Frequency weightings Peak: Simultaneous A, C & Linear (Z) • Time weightings: Simultaneous Slow, Fast & Impulse • Amplitude weightings: Q3, Q4 and Q5 (Q4 & Q5 applicable to Lavg only) • Thresholds: 70 to 90 (dB) in 1 dB steps (applicable to Lavg only) • Noise foor: <33dB(A) Class 2, <25dB(A) Class 1 • Runs stored: 100 • Display: 320x240 pixel transmissive colour TFT • Frequency bands: 11 octave bands 16Hz to 16kHz (CEL-620B model only) • Calibration information: Stores pre and post run calibration date, time and level • Output (P.C.): USB 2.0 ‘A’ to ‘Mini B’ • Batteries: 3 x AA Alkaline (supplied) or rechargeable • External power: 9-14V DC at 250mA via 2.1mm connector • Battery life: 11 hours with backlight on, 20 hours backlight off • Tripod mount: 1/4” Whitworth socket • Size mm (in): 72 x 229 x 31mm (2.8 x 9.0 x 1.2”) • Weight gm (oz): 295g (10.4oz)
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