| The CEL-400 series consists of the following
noise meters. There are 3 different models in the range that include the
basic model CEL-430.A, the general purpose CEL-450, and the fully configured CEL-490
versions. The newer CEL-450 and 490 models
incorporate real time octave and/or third octave band filters enabling the
user to make frequency analysis measurements much more quickly and reliably. A single ultra
wide 120 dB dynamic range makes a CEL-430 an ideal instrument for
ease of use in virtually all difficult applications when only the
overall noise level is required. |
| CEL-430 Integrating Sound Level
Meter |
- ANSI Type 1 and 2 accuracy
- single 20 to 140 dB measurement range
- auto-calibrate to applied acoustic calibrator level
- Fast and Slow time
weightings plus separate peak channel
- A, C and Z frequency weightings
- 3 separate default configurations (OSHA, ISO & DIN) for easy startup and go
- 2 user configurable setups from pc software
- AC and optional log DC analog
outputs
- 'A' version for broadband only
measurements
- memory storage for up to 100
measurement runs
- download to optional dB30 pc software package
- external 12 V dc power option
|
Shown
as CEL-430.A1
(Click on image for more details)
Part # CEL-430.A
wide range integrating sound level
meter
|
| CEL-450 Real time analyzer |
- ANSI Type 1 and 2 accuracy
- single measurement range from 0 to 140 dB
- Fast, Slow and Impulse time
weightings plus separate peak channel
- A, C and Z frequency weightings
- A version for broadband only
measurements
- B version for broadband and real time octave
measurements (16 Hz to 16 kHz)
- C version for broadband, real time octave
and third octave measurements (12.5 Hz to 20 kHz)
- memory storage for up to 999
measurement runs
- up to 4 short time history
profiles up to maximum of 880,000 profile results
- stores 40,000 octave spectra or 13,300 third octave spectra
- comes complete with Windows
download software for the PC
- direct printout capability to
standard office printers
- external 12 V mains or dc power
options
- fully upgradeable between
different versions
|
Shown
as CEL-450.B2
(Click on image for more details)
 Part # CEL-450 real time
analyzer
|
| CEL-490 Real time analyzer |
- ANSI Type 1 and 2 accuracy
- single measurement range from 0 to 140 dB
- Fast, Slow and Impulse time
weightings plus separate peak channel
- A, C and Z frequency weightings
- A version for broadband only
measurements
- B version for broadband and real time octave
measurements (16 Hz to 16 kHz)
- C version for broadband, real time octave
and third octave measurements (12.5 Hz to 20 kHz)
- memory storage for up to 999
measurement runs
- up to 99999 periods per run
- up to 4 short time history
profiles up to maximum of 880,000 profile results
- stores 40,000 octave spectra or 13,300 third octave spectra
- comes complete with Windows
download software for the PC
- direct printout capability to
standard office printers
- external 12 V mains or dc power
options
- fully upgradeable between
different versions
|
Shown
as CEL-490.C2
(Click on image for more details)
Part # CEL-490 real time analyzer
|
| Parallel (or simultaneous) octave
band analysis in a CEL-450 & 490 analyzer |
- real time octave band (11 bands plus overall)
- real time third octave bands (33 bands plus overall)
- all bands are measured and displayed simultaneously
- no transient information is lost when the signal changes quickly
- see the relevant frequency band instantaneously when the sound
changes
|
simulation of real time display showing live update |
|
Key differences between CEL-450 and 490 Real time
analyzers |
- CEL-490 has 5 x LN% parameters for environmental
measurements
- CEL-490 can data log in octave and third octave
bands
- CEL-490 can be operated using the 7 pairs of delay
start and stop timers
- CEL-490 can be used to measure period data and
profile data
|
