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TSI Casella CEL-630 Series Sound Level Meter and Analyser

Occupational Safety and Environmental Measuring Instruments

TSI Casella CEL-630 Series Class 1 and Class 2 sound level meter

CEL-632 and CEL-633 | IEC 61672 Class 1 / Class 2 | Workplace and Environmental Noise Measurement

The TSI Casella CEL-630 Series is a family of professional logging sound level meters developed for advanced workplace and environmental noise measurements. The CEL-632 and CEL-633 models simultaneously log broadband parameters in a single measurement range, and depending on the model, offer real-time 1/1 and 1/3 octave analysis, audio recording, event capture, and statistical assessment.

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Product Specifications

  • Class 1 or Class 2: IEC 61672:2002 Class 1 and Class 2 options; ANSI S1.4 Type 1/2. Frequency filters are defined according to IEC 61260 Class 0 requirements.

  • 20–140 dB single measurement range: 20–140 dB RMS and 143.3 dB peak; wide dynamic range without manual range switching using standard microphones. Applications up to 165 dB can be supported with an optional high-range microphone.

  • Simultaneous A, C, and Z: A, C, and Z frequency weightings along with Fast, Slow, and Impulse time weightings can be measured simultaneously; exchange rates of Q=3, 4, and 5 are supported.

  • 1/1 and 1/3 octave: 11 1/1-octave bands between 16 Hz–16 kHz on B and C models; C models additionally feature 33 1/3-octave bands between 12.5 Hz–20 kHz.

  • 2 GB memory and time-history: More than one year of data capacity at 1-second logging interval, 999 measurement runs, period/profile results, and detailed analysis via Casella Insight.

  • Audio and event recording: Noise sources can be identified via voice notes and WAV recording. The CEL-633 provides further advanced analysis for environmental measurements with level-triggered event recording and statistical Ln values.

  • CEL-120 calibration integration: Field calibration dates and times can be stored alongside measurement data and transferred to Insight software.

    • Model selection: A = broadband; B = broadband + 1/1 octave; C = broadband + 1/1 and 1/3 octave. In addition to CEL-632 functions, the CEL-633 provides statistical Ln and level-triggered event functions. Suffix 1 indicates Class 1, 2 indicates Class 2 accuracy class.
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    Technical Specifications

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    TSI Casella CEL-630 Series Sound Level Meter Video
    TSI Casella CEL-630 Series Sound Level Meter Video
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    Technical Specifications

    Technical Table 1
    Series / ModelsCEL-632 and CEL-633; A, B, C analysis options; Class 1 or Class 2
    StandardsIEC 61672:2002 Class 1 and 2; ANSI S1.4 Type 1 and 2
    Frequency FiltersIEC 61260 Class 0; ANSI S1.43 (1996)
    Measurement Range20–140 dB RMS; 143.3 dB peak
    Noise Floor19 dB(A) Class 1; 25 dB(A) Class 2
    Frequency WeightingsA, C, and Z simultaneous
    Time WeightingsFast, Slow, and Impulse simultaneous
    Q Exchange Rate3, 4, and 5 simultaneous
    1/1 Octave11 bands, 16 Hz–16 kHz (B and C models)
    1/3 Octave33 bands, 12.5 Hz–20 kHz (C models)
    Broadband ParametersLXY, LXYmax, LXYmin, LXeq, LXpeak, Lavg, LC-LA, LXIeq, LTM3, LTM5, LAE
    Back EraseLast 10 seconds in Cumulative mode
    Memory2 GB; >1 year with 1 s logging; 999 runs
    AudioUp to 10 hours at high quality / 60 hours at low quality
    Battery3 × AA alkaline; approx. 10–15 hours depending on backlight
    Dimensions / Weight230 × 72 × 31 mm / 332 g (including batteries)
    Operating ConditionsClass 1: -10…+50 °C; Class 2: 0…40 °C; 0–90% RH non-condensing; 65–108 kPa
    Technical Table 2
    FunctionCEL-632CEL-633
    Cumulative / Period / Profile✓✓
    Audio Voice Notes / Marker Events✓✓
    Statistical Ln%—✓
    Level-triggered Events—✓
    A optionBroadbandBroadband
    B optionBroadband + 1/1 octaveBroadband + 1/1 octave
    C optionBroadband + 1/1 + 1/3 octaveBroadband + 1/1 + 1/3 octave

    Measurement and Standards Approach

    In terms of instrument performance, the CEL-630 Series offers IEC 61672 Class 1 or Class 2 options. Method standards such as ISO 9612 in workplace exposure assessment and ISO 1996 in environmental noise surveys separately govern the measurement strategy. Instrument class and measurement method are distinct concepts.

    Sectors

    Occupational Health and Industrial Hygiene
    Industrial Manufacturing
    Environmental Noise and Construction
    Energy, Mining, and Infrastructure
    Machinery and Automotive
    Universities and R&D

    Alternative Products

    You can compare other professional noise measurement solutions according to measurement class, analysis level, and personal exposure requirements.

    TSI Casella CEL-246 Class 2 sound level meterTSI Casella CEL-246Compact Class 2 sound level meter for general and workplace noise surveys.VIEW →TSI Quest SoundPro SE-DL sound level meter and noise analyserTSI Quest SoundProProfessional applications requiring advanced octave band and time-history analysis.VIEW →TSI Casella dBadge2 personal noise dosimeterTSI Casella dBadge2Wearable dosimeter for measuring an employee's personal noise exposure throughout a shift.VIEW →

    Frequently Asked Questions About TSI Casella CEL-630 Series

    Which models are available in the CEL-630 Series?
    The current series consists of the CEL-632 and CEL-633 models. Version A provides broadband, version B adds 1/1 octave, and version C adds 1/1 and 1/3 octave analysis capability. Suffix 1 or 2 designates the accuracy class.
    What is the key difference between CEL-632 and CEL-633?
    Both models support cumulative, period, profile, voice note, marker, and external event data. The CEL-633 adds statistical Ln values and level-triggered event recording to these.
    Can the CEL-630 Series be purchased as Class 1 and Class 2?
    Yes. According to the manufacturer datasheet, IEC 61672:2002 Class 1 and Class 2 options are available. The 1 or 2 at the end of the model code designates the accuracy class.
    Can the CEL-630 Series perform 1/3 octave analysis?
    C configurations measure 33 1/3-octave bands across the 12.5 Hz–20 kHz range. B and C configurations support 11 1/1-octave bands across the 16 Hz–16 kHz range.
    Is the CEL-630 Series suitable for workplace and environmental noise measurements?
    Yes. The series is designed for workplace noise assessments and environmental noise investigations. For methods such as ISO 9612 and ISO 1996, the relevant measurement strategy and applicable legislation must be applied in addition to instrument class.

    Notice: Technical specifications have been prepared based on manufacturer documentation. Model, firmware, certifications, and specifications may vary depending on product revision. For current product and certification verification prior to purchase, NOVEL please contact.

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