The Casella CEL-633C is a high-performance, precision sound level meter designed for advanced occupational and environmental noise monitoring. As part of the CEL-63X series, the “C” designation indicates this model is a Class 1 (Precision) instrument, providing the highest level of accuracy for critical noise assessments. It features an intuitive interface, allowing for simultaneous measurement of all noise parameters, ensuring no data is missed during complex surveys.

When paired with the CEL-120/1 Acoustic Calibrator, the system forms a comprehensive professional noise analysis suite, enabling users to maintain calibration compliance and field-test accuracy for reliable, legally defensible noise data.

 

Product Specifications & Data

The following table outlines the specifications for the Casella CEL-633C.

Feature	Specification
Model	CEL-633C (Class 1)
Measurement Range	20 to 140 dB RMS
Data Logging	Integrated memory with USB download
Display	High-resolution color TFT screen
Calibration	CEL-120/1 Acoustic Calibrator (Class 1)
Dimensions (Meter)	230 mm (H) x 72 mm (W) x 31 mm (D)
Weight	Approx. 350 g (including batteries)
Origin	United Kingdom

 

Key Application Areas

The CEL-633C is ideal for users requiring professional-grade noise assessment tools:

• Occupational Health & Safety: Assessing daily personal noise exposure (LEQ) to meet workplace regulations.
• Environmental Noise Monitoring: Analyzing background noise levels for industrial site planning.
• Product Noise Testing: Evaluating sound power levels of machinery in factory environments.
• Building Acoustics: Measuring sound insulation and reverberation in commercial structures.

 

Product Usage Instructions

1. Field Calibration: Before every measurement, attach the CEL-120/1 Calibrator to the microphone. Ensure the meter is set to calibration mode and adjust the reading to 114 dB.
2. Configuration: Use the menu to select the desired measurement criteria (e.g., A-weighting, C-weighting, or Z-weighting) depending on your specific survey requirements.
3. Measurement: Position the microphone at the approximate ear height of the personnel or at the point of interest. Avoid shielding the microphone with your body.
4. Data Management: After the survey, connect the meter via USB to a PC running the Casella Insight software to download and analyze time-history data.
5. Care: Always store the instrument and the calibrator in their protective cases. Avoid exposing the microphone to high humidity or extreme dust.

 

Q&A (Frequently Asked Questions)

Q: What is the difference between the CEL-632 and CEL-633 models?

A: The CEL-633 series includes full octave and 1/3 octave band frequency analysis capabilities, which are essential for selecting the correct hearing protection, whereas the 632 focuses primarily on broadband noise measurements.

Q: How often should the CEL-120/1 be sent for laboratory calibration?

A: It is industry best practice to have both the sound level meter and the acoustic calibrator certified by an accredited laboratory annually to ensure continued measurement validity.

Q: Can the CEL-633C log data in real-time?

A: Yes, it features comprehensive data logging capabilities that store short-duration time histories (e.g., 1-second or 1-minute intervals) for detailed post-survey noise profiling.

 

Recommended Inventory Products

1. CEL-120/2 – Class 2 Acoustic Calibrator
2. CEL-246 – Digital Sound Level Meter
3. CEL-350 – dBadge2 Personal Noise Dosimeter
4. CEL-632C – Class 1 Broadband Sound Level Meter
5. CM-284 – Spare Microphone Capsule
6. PM866K01 – ABB Processor Module
7. CI854A – ABB Communication Interface
8. DO810 – ABB Digital Output Module
9. AI810 – ABB Analog Input Module
10. SB821 – Industrial Ethernet Switch