Related Manuals for Casella USA CEL-240
Summary of Contents for Casella USA CEL-240
- Page 1 Casella USA 17 Old Nashua Rd #15 Amherst, NH 03031 USA TF (800) 366-2966 info@casellausa.com CEL-240 Digital Sound Level Meter Operator Manual HB-3331-01...
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Page 4: Digital Sound Level Meter
The CEL-240 is a completely digital sound level meter, designed for stable, reliable performance, fully compliant with international sound level meter standards. This instruction manual is to help you get the most benefit from your CEL-240 and to ensure accurate noise measurements. -
Page 5: Preparation For Use
2. Calibrate the instrument as required. See ‘Calibration’ section. 3. Place the windshield over the microphone prior to any measurement. 4. The CEL-240 will display a bargraph (Figure D) or time history (Figure J) display. See ‘Instrument Settings’ to change time and frequency weightings, or type of display. -
Page 6: Configuration Menu
• Calibration level • Signal input source To enter the configuration menu, hold down the right key when the CEL-240 is switched off and press the ‘power’ key. The ‘Contrast’ screen is then displayed (Figure G). Press the right key to adjust the contrast as appropriate and then press the left to accept the changes. -
Page 7: Specification
The calibration level screen will then be displayed (Figure H). This screen is used to set the exact reference level used by the acoustic calibrator. Refer to the calibration certificate for the acoustic calibrator for the calibrator output level. The ‘Signal input source’ screen (Figure I) will then be shown. NOTE: this option is for the use of acoustic laboratories only. - Page 8 Effects of Humidity: Less than ±0.5dB over the range 30 to 90% relative humidity (non-condensing), relative to the value at reference conditions. Storage Environmental Conditions Humidity: 0 to 90%RH in the absence of condensation. Temperature range: -20 to +60 Pressure: 65 to 108kPa Microphone Internal electret capsule 10mV/Pa nom +/-3dB within ½”...
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Page 9: Service And Warranty
AC output provided for DAT tape / PC wav file recording or headphone applications. Approx 0.5V RMS Full Scale Deflection (FSD) ‘A’ weighted output on selected range. Minimum load impedance 22kΩ. (Optional DC Output via internal configuration, 0 to 3.3V DC for FSD on selected range. Output corresponds to selected weighting, 2kΩ... - Page 10 Fax: +44 (0) 1234 841 490 E-mail: info@casellacel.com Web: www.casellacel.com CASELLA USA 17 Old Nashua Road, # 15, Amherst, NH 03031, U.S.A. Toll Free: +1 (800) 366 2966 Fax: +1 (603) 672 8053 E-mail: info@casellaUSA.com Web: www.casellaUSA.com CASELLA ESPANA S.A.