Casella CEL-620 Series

Sound Level and Octave Band Analyzer

Casella CEL CEL-620 Series - Sound Level and Octave Band Analyzer

The CEL-620 series of sound analyzers are aimed primarily at the industrial hygiene and safety user for the measurement of workplace noise. All feature DSP technology and a dynamic range from 20–140 dB on a single span.

Casella's CEL-620 series of sound analyzers feature powerful dsp processing and a wide measurement range. With the capability to monitor using a single range of 20 to 140 dB, measurements are greatly simplified with no need to change ranges during measurement or predetermine the correct range. Every 620 series sound analyzer features a large color display and is capable of storing up to 100 runs for later review or download to a PC.

In addition to providing all the capabilities of a standard sound level meter, the CEL-620 series powerful DSP processor stores all sound data simultaneoulsy every run. There are two models and three options available. The difference between the CEL-620 and CEL-621 is that the CEL-621 provides statistical parameters used for environmental measurements. Each model is available in three versions including the standard 'A' model which monitors all frequency and time weightings simultaneously, the 'B' model which adds 11 simultaneous octave bands, and the 'C' model which adds 33 simultaneous third octave bands.

CEL-620 and CEL-621 sound analyzers are available with microphones for type 1 or type 2 ANSI accuracy. The CEL-620 can be upgraded to a CEL-621 and/or octave bands added at a later date.

CEL 620 Series Model Comparison

Feature CEL-620.A CEL-620.B CEL-620.C CEL-621.A CEL-621.B CEL-621.C
Basic sound level meter functionality
Integrating/averaging functionality
Single event level
Run memory
PC interface
Statistical parameters      
Real time broadband mode
Real time octave band mode    
Real time third octave band mode        

Casella CEL-620 Series Ordering Instructions

Both the CEL-620 and CEL-621 are available below as just the instrument or in kits. 'A' models do not include any octave bands, 'B' models include 11 octave bands, and 'C' models include 33 octave bands.

Standard kits include a calibrator and carrying case. Software kits also include a license for Casella's powerful Insight software. All models come with a USB cable and are capabale of downloading logged data to a PC in the form of standard spreadsheet files.

CEL-620/621 Instrument Only

  • Part Number/Description
  • Cart
  • Price
  • CEL-620.A1CEL-620 sound analyzer1 type 1
  • Order
  • $2,850.00 $2,793.00
  • CEL-620.A2CEL-620 sound analyzer1 type 2
  • Order
  • $1,791.00 $1,755.18
  • CEL-620.B1CEL-620 octave band sound analyzer1 type 1
  • Order
  • $3,760.00 $3,684.80
  • CEL-620.B2CEL-620 octave band sound analyzer1 type 2
  • Order
  • $2,702.00 $2,647.96
  • CEL-620.C1CEL-620 third octave band sound analyzer1 type 1
  • Order
  • $5,083.00 $4,981.34
  • CEL-620.C2CEL-620 third octave band sound analyzer1 type 2
  • Order
  • $4,025.00 $3,944.50

CEL-620/621 Kits

  • Part Number/Description
  • Cart
  • Price
  • CEL-620.A1/K2CEL-620 sound analyzer software kit2 type 1
  • Order
  • $3,795.00 $3,719.10
  • CEL-620.A2/K2CEL-620 sound analyzer software kit2 type 2
  • Order
  • $2,425.00 $2,376.50
  • CEL-620.B1/K2CEL-620 octave band sound analyzer software kit2 type 1
  • Order
  • $4,620.00 $4,527.60
  • CEL-620.B2/K2CEL-620 octave band sound analyzer software kit2 type 2
  • Order
  • $3,250.00 $3,185.00
  • CEL-620.C1/K2CEL-620 third octave band sound analyzer software kit2 type 1
  • Order
  • $5,820.00 $5,703.60
  • CEL-620.C2/K2CEL-620 third octave band sound analyzer software kit2 type 2
  • Order
  • $4,450.00 $4,361.00

CEL-620/621 Accessories

  • Part Number/Description
  • Cart
  • Price
  • CEL-6841Foam windscreen for CEL-6X0 meters
  • Order
  • $18.00 $17.64
  • CEL-6840Kit case for CEL-6X0 meters and accessories
  • Order
  • $110.00 $107.80
  • CMC51USB cable for CEL-6X0 meters
  • Order
  • $30.00 $29.40
  • CEL-2511/2″ precision electret microphone free field incidence
  • Order
  • $1,235.00 $1,210.30
  • CEL-2521/2″ general purpose electret microphone free field incidence
  • Order
  • $176.00 $172.48
  • CEL-600/UPABUpgrade CEL-620/621A to B to add octave band
  • Order
  • $1,175.00 $1,151.50
  • CEL-600/UPBCUpgrade CEL-620/621B to C to add third octave band
  • Order
  • $1,635.00 $1,602.30
  • CEL-600/UPACUpgrade CEL-620/621A to C to add third octave band
  • Order
  • $2,375.00 $2,327.50
  • NoiseAppsNoise Apps web based application
  • Order
  • $155.00 $151.90
  • ISCO99Insight database managerment software
  • Order
  • $310.00 $303.80
WARNING: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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