Casella CEL-630

Casella CEL-630

The Casella CEL-630 series is the most advanced  sound level meter in the Casella line-up.

Starting at $1,795! – Prices will vary depending on options. Call for pricing. – 1-800-272-0301

The Casella CEL-630 series sound level meter features include a wide dynamic range from 20 to 140 dB on single span, A, C and Z frequency weightings, and simultaneously recording Slow, Fast, Impulse and Peak time responses calculated at 3, 4, and 5db exchange rates. This sound level meter series calculates and stores all the common noise parameters so that even the most inexperienced users capture the data that they need. Furthermore, the Casella CEL-630 series has models capable of octave band analyzing and data logging.

A large 240 x 320 pixel color ¼ VGA graphic display and user-friendly menu structure make this advanced unit easier to use than any competitor’s!

The Casella CEL-630 series comes in four models, each of which have three different versions and two different microphone accuracies. Kits with an acoustic calibrator, wrist strap, foam windscreen, USB cable, Insight plugin, and small kit case can be purchased as well.

For more information, read below.


Buy a Casella CEL-630 series sound level meter!

Ultra Wide Range Integrating  Broadband  Sound Level Meter  (Octave Band Analyzers and Data Logging Systems Available)

The Casella CEL-630 series sound level meter is a powerful yet simple-to-use instrument capable of occupational, industrial, and environmental noise studies. With a measurement range of 20 to 140 dB, there is no need to adjust sound level ranges before recording a noise survey. In addition, the Casella CEL-630 series meter provides a great amount of detail, recording the A, C and Z (unweighted) channels for all measurements. It concurrently measures the Slow, Fast, Impulse and Peak responses and calculates the time average noise level with the 3, 4 and 5 dB exchange rates during each run. Moreover, the maximum, minimum, and time average noise levels are calculated and stored for all measurements with all the valid combinations of frequency weightings and time responses so that users will have all the information they need regardless of how the survey is setup or what parameters are chosen. In essence, the Casella CEL-630 series meter will collect all the information that a user might need despite how parameters are configured for a specific survey.

The Casella CEL-630 series sound level meter uses a high resolution quarter 240 x 320 LCD screen with color-coded menus to help simplify measurement for both new and experienced users. A green menu bar means that the instrument is collecting data while a red menu bar represents that the Casella CEL-630 series is in standby mode. A blue menu screen appears during survey setup. Yellow appears during calibration.

Calibration of Casella products is always pain-free. Simply, place the calibrator over the microphone and switch the acoustic calibrator on. The sound level meter will instantly recognize the tone and prompt the user to accept or decline calibration.

The Casella CEL-630 sound level meter is powered by three AAA batteries that can last up to twelve hours if the backlight is not used. An external 12 Vdc source such as a mains supply or car battery can be used for extended measurements.

Measurement results can be transferred to the computer using a USB and the Casella Insight software. Results that include audio files can be downloaded as well as integrated into a single comprehensive report with the Casella software.



The Casella CEL-630 series possesses different configurations for your specific application.

The Casella 630 series contains four different models: Casella CEL-630, Casella CEL-631, Casella CEL-632, and the Casella CEL-633. The Casella CEL-630 is the series base model while the Casella CEL-632 is the data logging version of the CEL-630 sound level meter.The Casella CEL-631 adds five more Statistical LN% parameters to the sound level meter’s measurement results but does not possess the ability to data log. The Casella CEL-633 sound level meter possesses the additional Statistical LN% parameter as well as the capability to data log. To see a graphical comparison of these sound level meters, visit the model comparison page. or Casella Solutions.

There are three versions of each model- A, B, and C- that differentiate the amount of detail that the sound level meter collects. The A version meter provides the overall broadband results with the A, C and Z (unweighted) channel for all measurements. The B version meter adds the ability to record 11 simultaneous octave bands from 16 Hz to 16 kHz while the C version model adds 33 third octave band measurements from 12.5 Hz to 20 kHz.

In addition, there are two microphones types that specify different accuracy levels. The Type 1 microphone is a precision grade microphone for use in complex environment surveys and laboratory use. The Type 2 microphone is a general use grade microphone that is often used for basic environment surveys and work noise surveys. As can be expected, a more accurate microphone can be used for basic surveys.

The Casella CEL-630 series sound level meter can be purchased alone or with one of two kits. Kit 1 features standard accessories that include an acoustic calibrator, carrying case, and three AA batteries. Kit 2 features all the accessories of Kit 1 with the addition of Casella’s Insight software that makes for easy interpretation and reports.

Casella CEL-630 Sound Level Meter Price List

CEL-630.A1 $2,595
CEL-630.A2 $1,795
CEL-630.B1 $3,195
CEL-630.B2 $2,395
CEL-630.C1 $3,995
CEL-630.C2 $3,195
CEL-630.A1/K1 $3,695
CEL-630.A1/K2 $4,375
CEL-630.A2/K1 $2,595
CEL-630.A2/K2 $3,345
CEL-630.B1/K1 $4,225
CEL-630.B1/K2 $4,975
CEL-630.B2/K1 $3,195
CEL-630.B2/K2 $3,945
CEL-630.C1/K1 $5,025
CEL-630.C1/K2 $5,775
CEL-630.C2/K1 $3,995
CEL-630.C2/K2 $4,745
CEL-631.A1 $TBD
CEL-631.A2 $TBD
CEL-631.B1 $TBD
CEL-631.B2 $TBD
CEL-631.C1 $TBD
CEL-631.C2 $TBD
CEL-631.A1/K1 $TBD
CEL-631.A1/K2 $TBD
CEL-631.A2/K1 $TBD
CEL-631.A2/K2 $TBD
CEL-631.B1/K1 $TBD
CEL-631.B1/K2 $TBD
CEL-631.B2/K1 $TBD
CEL-631.B2/K2 $TBD
CEL-631.C1/K1 $TBD
CEL-631.C1/K2 $TBD
CEL-631.C2/K1 $TBD
CEL-631.C2/K2 $TBD
CEL-632.A1 $2,795
CEL-632.A2 $2,095
CEL-632.B1 $3,395
CEL-632.B2 $2,695
CEL-632.C1 $4,195
CEL-632.C2 $3,495
CEL-632.A1/K1 $3,925
CEL-632.A1/K2 $4,675
CEL-632.A2/K1 $2,895
CEL-632.A2/K2 $3,645
CEL-632.B1/K1 $4,525
CEL-632.B1/K2 $5,275
CEL-632.B2/K1 $3,495
CEL-632.B2/K2 $4,245
CEL-632.C1/K1 $5,325
CEL-632.C1/K2 $6,075
CEL-632.C2/K1 $4,295
CEL-632.C2/K2 $5,045
CEL-633.A1 $3,095
CEL-633.A2 $2,395
CEL-633.B1 $3,695
CEL-633.B2 $2,995
CEL-633.C1 $4,495
CEL-633.C2 $3,795
CEL-633.A1/K1 $4,225
CEL-633.A1/K2 $4,975
CEL-633.A2/K1 $3,195
CEL-633.A2/K2 $3,945
CEL-633.B1/K1 $4,825
CEL-633.B1/K2 $5,575
CEL-633.B2/K1 $3,795
CEL-633.B2/K2 $4,545
CEL-633.C1/K1 $5,625
CEL-633.C1/K2 $6,375
CEL-633.C2/K1 $4,595
CEL-633.C2/K2 $5,345

Click here to see the Casella CEL-630 Series Accessory Price List.



Casella CEL-633 Technical Specs

Technical Specification – General


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)


3 x AA Alkaline or NiMH rechargeable types

Battery Life: (hours)

Up to 12 hours without backlight

Dimensions w x h x d: (in/mm)

2.8 x 10.5 x 1.2 in (71.5x 267.0x 31.0mm) including preamplifier and microphone

Weight including batteries: (oz/gm)

10.1 oz (< 291g)

Tripod socket for fixed measurements

Yes via standard camera thread (1/4″ size)

Operator controls:

8 buttons for power On/Off + 2 x context sensitive menu selection + 4 navigation + confirm selection

Technical Specification – Performance

Total measurement range (dB)

20 to 140

Dynamic range on single measurement span (dB)


Input preamplifier/microphone

CEL-495 removable preamp. plus ½” mic. capsule

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 (depending on model)

Lp, Lmx, Lmn, Lpk

Leq, LIeq, LDOD, Lavg, LAE, Ltm3, Ltm5


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 format

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 for time history logging – periods and profiles (depending on model) 1 Gb internal memory

999 run maximum memory, long term recording is separated into “24 hr days” that can be recombined in Insight software for later analysis and review

Timed interval for regular data storage in periods and profiles

1 sec to 1 hour in 13 fixed intervals for Periods

1 sec to 30 mins for Profiles

Event capture above user selectable level with audio recording in wav format for identification

User selectable trigger level 40-140 db in 1 dB steps

Wav file stored at hi, med or lo resolution

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 22kohm.

DC output characteristics –

0 to 1.3V DC for FSD on selected range.

Digital output of stored result sets

Via USB 2.0 mini B connector to Casella Insight program


Casella CEL-630 References

Casella CEL-630  Manual

Casella CEL-630 FAQs

Casella CEL-630 Field Guide