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Home > Other Meters > Sound Analyzer

NEW!! - CEL-620 Integrating Octave Band Sound Level Meter from Casella USA

CEL-620 Octave Band Sound Meter Introduction

Many industrial measurements of complex noises require a complete knowledge of the variable noise level climate over a period of time. The CEL-620.A meter is designed to satisfy this need and to enhance it by providing the capture and display of the highest maximum level and lowest maximum level together with the integrated time average level.

A super wide 120 dB dynamic range means that the user does not need to worry about changing scales as it will always be on the correct scale and the provision of all the popular frequency and time weightings allow many different measurements to be taken by new and experienced user alike. A full color high precision, graphic LCD enhances the user experience with this new meter.

Applications

For measurements of simple noise levels the instantaneous sound pressure level is often adequate. However, in many real workplace situations the noise levels are variable of changing too quickly to accurately visually estimate the average level over a representative time period.
The CEL-620 is designed to assist in the correct interpretation of these difficult noise climates by providing the time average noise level with both the 3 and 5 dB exchange rates. Changing noise levels are properly integrating into the overall time average answer and displayed as the Leq (with Q=3) or the Lavg (with Q=5) exchange rates. This enables the CEL-620 to correctly assess changing noise levels.

Comparison of the results to the requirements of OSHA or ACGIH or NIOSH. Additional octave band filters in the B version of the CEL-620 provide for a comprehensive frequency analysis of difficult noise levels that is so important for the correct prescription of hearing protectors or other noise control applications.

Specifications

Accuracy ANSI S1.4 & S1.43, IEC 61672-1, 2002-5
Filter comply with ANSI S1.11 and IEC 61260
Frequency Weightings A, C & Z, unweighted
Time Weightings Slow, Fast, Impulse
Microphone Type Removable 1/2" free field electret microphone on fixed preamplifier
Total Measurement Range 20 to 140 dB
Noise Floor (A weighted dB) < 33
Dynamic Range on single measurement span (dB) 120 dB
Displayed Parameters Always Available on All User Available Screens Instantaneous level - Lp, peak level Lpk
Maximum level - Lmx
Minimum level - Lmn
Average levels, Leq, LDOD, Lavg, Ltm3, Ltm5
Display Type: 240 x 320 full color dot matrix LCD screen including real time analog bar graph
Resolution numeric (dB) - 0.1
Resolution graphical (dB) - 1
Update Rate for Display 0.5 seconds
Displayed Time Span for Time History Chart Last 1 to 5
Octave Band Measurements 11 octave bands 16 Hz to 16 kHz plus A, C & Z broad band levels
Display of Octave Band Levels Auto scaled to optimize available screen resolution with listing of band levels in tabular format
Measurements Made in Octave Band Mode Include Lmx and Leq with selected freq and time weighting
Reset of Max/min/average Level from Key Press by User Yes with non-decaying max/min hold
Calibration Method Automatically recognized by meter
Signal Detected when Calibrator Placed Over Microphone at 1 kHZ Frequency Calibration level set to 114.0 or 94.0 dB
External Power Option Yes via Universal CEL-PC18 Unit
Analog Outputs AC and optional DC via 2.5 mm jack socket
AC Output Characteristics About 0.85V RMS FSD output on selected sound level measurement range. Minimum load impedance 22kΩ
DC Output Characteristics 0 to 1.3 VDC for FSD on selected range. Output corresponds to selected frequency and time weighting. 2kΩ output impedance
Digital Output USB 2.0 format of instantaneous sound level via "mini A" USB
Digital Output Characteristics Instantaneous SPL output, software required, as per selected frequency and time weighting
Temperature Range 32 to 104°F
Effect of Humidity Less than +/-0.5 dB over the range of 30 to 90% RH non condensing
Operating Pressure Range 650 to 1080 mbar
Batteries 3 x AA alkaline or rechargeable types
Battery Life Up to 20 hours without backlight
Dimensions 2.8 x 9.0 x 1.2"
Weight 10.4 ounces
Screen Languages for Display English, French, German, Italian, Spanish menu selectable

Ordering Information

For pricing, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email sales@afcintl.com.
Description
Catalog No.
CEL-620 Type 1 with wrist strap and windscreen
CEL-620.A1
CEL-620 Type 1 with wrist strap, windscreen, calibrator, USB cable & case
CEL-620.A1/K1
CEL-620 Type 1 Octave Band Analyzer with wrist strap and windscreen
CEL-620.B1
CEL-620 Type 1 Octave Band Analyzer with wrist strap, windscreen, calibrator, USB Cable and Case
CEL-620.B1/K1
CEL-620 Type 2 with wrist strap and windscreen
CEL-620.A2
CEL-620 Type 2 with wrist strap, windscreen, calibrator, USB cable & case
CEL-620.A2/K1
CEL-620 Type 2 Octave Band Analyzer with wrist strap and windscreen
CEL-620.B2
CEL-620 Type 2 Octave Band Analyzer with wrist strap, windscreen, calibrator, USB Cable and Case
CEL-620.B2/K1
Acoustic Calibrator
CEL-110/1

Downloads

Benefits

Wide dynamic range from 20 to 140 dB on a single setting

A, C and Z simultaneous frequency weightings

Slow, fast and impulse time responses at the same time

Large 240 x 320 pixel color 1/4 VGA graphic display

Easy to use menu structure

Integrating capability for time average values

Pre Configured setups

Available in ANSI/IEC class 1 and class 2 accuracy depending on application

Available in A version with broad band levels only

Available in B version with 11 real time octave band filters from 16 Hz to 16 kHz plus broad band results

Storage of all results simultaneously in a huge non volatile memory

Available as complete measurement kits with acoustic calibrator and case
Last Revised: 1/31/09