Casella CEL-630.C2 Type 2 Third Octave Sound Analyzer

Casella CEL-630.C2 Type 2 Third Octave Sound Analyzer
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Casella CEL-630.C2
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This is a powerful measurement tool to support a wide range of industrial, health and safety, and environmental noise measurement requirements. The CEL-630 instrument uses the latest digital signal processing technology to provide a full range of functions, including integrating and real-time octave and 1/3-octave band analysis. The CEL-630 instrument uses a color TFT screen to show a range of information, including operating menus and messages, warnings, and the results of measurements. The screen is clear and easy to read under all ambient lighting conditions, including total darkness.

Measurements captured by the CEL-630 instrument conform to international standards for acoustic measurement. The measurements are saved automatically in high-capacity internal Flash memory. You can transfer the measurement results to a PC where you can manage the results and create reports by using the Casella Insight data management software.


  • Full color graphic display provides maximum clarity
  • Context sensitive menus for simple navigation with minimum key strokes
  • Automatic calibration with minimum operator intervention
  • Real time octave or 1/3 octave band analysis in 11 (or 33) simultaneous bands
  • Easy to use menu structure
  • Memory storage of complete overall run results
  • Manual or fixed duration recording possible
  • Available in ANSI/IEC class 1 and class 2 accuracy
  • Available as B or C version with real time octave & 1/3 octave band
  • Storage of all results simultaneously in a huge non-volatile memory
  • Up to 999 runs stored
  • Available as complete measurement kits with acoustic calibrator and case


Accuracy ANSI S1.4 & S1.43,IEC 61672-1 2002-5
Frequency filters comply with ANSI S1.11 and IEC 61260
Microphone type 1/2" Free field Electret microphone & preamplifier Type 1 or Type 2 on a removable CEL-495 preamplifier
Reference Conditions 68°F (20°C) air temperature, 65% Relative Humidity, 1013 mbar (101.325 kPa) atmospheric pressure.
Operating Temperature Range 14 to 122°F (-10 to 50°C) (Class 1) 32 to 104°F (0 to 40°C) (Class 2)
Effect of Humidity Less than ±0.5dB over the range 30 to 90% RH (non-condensing),rel. to value at ref. conditions
Operating pressure range 650 to 1080 mbar (65 to 108 kPa)
Batteries 3 x AA Alkaline or NiMH rechargeable types
Battery Life (hours) Up to 12 hours without backlight
Dimensions (W x H x D) 2.8 x 10.5 x 1.2 in (71.5x 267.0x 31.0mm) including preamplifier and microphone
Weight including batteries 10.1 oz (< 291g)
Total measurement range (dB) 20 to 140
Dynamic range on single measurement span (dB) 120
Noise floor (A weighted dB) < 20 (Class 1),< 25 (Class 2)
Frequency weightings Simultaneous A,C & Z (unweighted)
Time weightings Simultaneous Slow,Fast and Impulse
Amplitude weightings (Exchange rate) Simultaneous Q=3,Q=4 and Q=5 dB
Displayed parameters available as per user selected list or using pre-configured setups Lp,Lmx,Lmn,Lpk
Narrow band real time measurements (B version) 11 octave bands 16 Hz to 16 kHz
(C version) 33 third octave bands 12.5 Hz to 20 kHz
with cursor readout plus A & C & Z broad band levels
Display of octave and third octave band levels Graphical spectrum including broad band values & With listing of individual band levels in tabular forma
Measurements in octave (& 1/3) band mode include Lmx and Leq with selected freq and time weightings
Display type 240 x 320 full color dot matrix LCD digital including real-time analog bar graph scale
Data storage 1 Gb internal memory 999 run maximum memory storing all parameters over the whole of the run – overall results are recorded
Direct printing of results on site To portable battery operated printer on 3 in paper roll
Displayed time span for time history graph on LCD Last 60 seconds
Signal detected when calibrator placed over microphone at 1 kHz frequency Calibration level set to 114.0 or 94.0 dB With +/-1 dB span and 0.1 dB resolution by user
External power option (12 Vdc) or via USB 5V line Yes via universal CEL-PC18 unit
Analog outputs AC (and optional DC) via 2.5 mm jack socket
AC output characteristics -
(Provided for DAT tape / PC wav file recording or headphone applications)
Approx 0.85V RMS FSD output on selected sound level measurement range. Minimum load impedance 22kΩ.
DC output characteristics -
(Provided at time of order as option for connection to chart recorder or pc data logging system)
0 to 1.3V DC for FSD on selected range. Output corresponds to selected frequency and time weighting. 2kΩ Output impedance
Digital output of stored result sets Via USB 2.0 mini B connector to Casella Insight program
Audio recording Voice notes can be stored at the start of a run in wav file format for later identification and annotation