Casella
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| Brand | Casella |
|---|---|
| Origin | United Kingdom |
| Model | CEL-240 |
| Compliance | IEC 61672-1:2013 Class 2, ANSI S1.4-2014 Type 2 |
| Measurement Range | 30–130 dB(A), 35–130 dB(C) |
| Frequency Weighting | A, C, Z (Linear) |
| Time Weighting | Fast (F), Slow (S), Impulse (I) |
| Max Hold Function | Yes |
| Battery Life | >35 hours (alkaline) |
| Data Output | USB 2.0 (real-time & stored data) |
| Display | High-resolution backlit LCD with time-history trace |
| Operating Temperature | −10 °C to +50 °C |
| IP Rating | IP54 |
| Warranty | 2 years |
| Brand | Casella |
|---|---|
| Origin | United Kingdom |
| Model | CEL-620 |
| Compliance | IEC 61672-1:2013 Class 1, IEC 61260-1:2014 Class 0 (for CEL-620B), ANSI S1.4-2014, ANSI S1.43-2020 |
| Measurement Range | 20–140 dB RMS (single full scale), 143 dB peak |
| Frequency Weightings | Simultaneous A-, C-, and Z-weighting |
| Time Weightings | Simultaneous Fast, Slow, and Impulse |
| Integrated Metrics | L<sub>XY</sub>, L<sub>XY,max</sub>, L<sub>XY,min</sub>, L<sub>X,eq</sub>, L<sub>avg</sub>, L<sub>C−A</sub>, L<sub>AE</sub>, L<sub>TM3–TM5</sub> |
| Octave Band Analysis | 11 bands (16 Hz–16 kHz, CEL-620B only) |
| Display | 320 × 240 pixel TFT color LCD |
| Data Storage | 100 measurement sessions with full metadata |
| Power | 3 × AA alkaline or rechargeable batteries (11 h with backlight, 20 h without) |
| Operating Temperature | −10 °C to +50 °C (Class 1), 0 °C to +40 °C (Class 2) |
| Dimensions | 72 × 229 × 31 mm |
| Weight | 295 g |
| Brand | Casella |
|---|---|
| Origin | United Kingdom |
| Model | CEL-712 |
| Measurement Principle | Forward Light Scattering (880 nm Infrared) |
| Safety Rating | Intrinsically Safe (ATEX/IECEx Certified) |
| Measurement Range | 0.001 mg/m³ to 250 g/m³ |
| Resolution | 0.001 mg/m³ |
| Operating Temperature | 0–55 °C (non-condensing) |
| Zero Drift Stability | <2 µg/m³/°C |
| Data Storage Capacity | 86,000 data points |
| Sampling Interval | Adjustable from 1 second to 60 minutes |
| Display | TFT color LCD with real-time trend graphing |
| Power Supply | 3 × AA NiCd rechargeable or alkaline batteries (13 h typical operation) |
| Weight | 0.6 kg (including batteries) |
| Dimensions | 172 × 72 × 33 mm |
| Analog Output | 0–2.5 V DC |
| Communication Interface | Mini-B USB |
| Compliance | Meets ISO 7706:2022 (ambient aerosol monitoring), EN 481 (inhalable fraction), EN 13205 (PM₁₀ and PM₂.₅ sampling conventions), ATEX Directive 2014/34/EU (Category 2G, Zone 1) |
| Brand | Casella |
|---|---|
| Origin | United Kingdom |
| Model | GUARDIAN2 |
| Dust Detection Sensitivity | 1 µg/m³ |
| Zero Stability | ±2 µg/m³ |
| Particle Size Selectors | TSP, PM₁₀, PM₂.₅ |
| Noise Accuracy | IEC 61672-1 Class 1 |
| Noise Metrics | L<sub>Aeq</sub>, L<sub>Amax</sub>, L<sub>A10%</sub>, L<sub>A90%</sub> |
| Noise Range | 20–140 dB RMS |
| Included Acoustic Calibrator | CEL-120/1 |
| Vibration Sensor | Triaxial Geophone |
| Vibration Frequency Range | 2–250 Hz |
| Vibration Resolution | 0.01 mm/s |
| Wind Speed Range | 0–60 m/s |
| Wind Speed Accuracy | ±2% |
| Wind Speed Resolution | 0.01 m/s |
| Wind Direction Range | 0–359° |
| Wind Direction Accuracy | ±3% |
| Wind Direction Resolution | 0.1° |
| VOC Range | 0–6000 ppm |
| VOC Resolution | 0.1 ppm |
| Enclosure Rating | IP65 |
| Operating Humidity | 5–100% RH |
| Data Storage | Internal Flash Memory |
| Communication | GPRS |
| Power Supply | 220–240 VAC or Hybrid Solar/Wind |
| Mounting | Wall or Pole (50 mm diameter) |