• Wide range from 30 to 130dB
• Large graphic LCD screen 128 x 128 pixels
• Slow, Fast and Impulse time weightings
• Current and highest noise level shown in display
• Large numeric and analog bar graph display
• Output to computer for simple data logging with pc
• Simple data logging to onboard memory
• Auto calibration at either 114 or 94 1 kHz decibel level
• Scrolling sound level display

• Performance:
• Total measurement range (dB) : 30 to 130
• Dynamic span on single range (dB) : 70
• Number of measurement ranges - 2 ranges (Low and High dB): (30 – 100 & 60 – 130)
• Noise floor (A weighted dB) : < 33
• Frequency weightings : A and C
• Time weightings : Slow, Fast and Impulse
• Displayed parameters always available on all user available screens: Instantaneous level - Lp, Maximum level - Lmx
• Reset of maximum level from key press by user : Yes – with non-decaying max hold
• Display type : 128 x 128 dot matrix LCD digital including real-time analog bar graph scale
• Display resolution – numeric (dB) : 0.1
• Display resolution – graphical (dB) : 1
• Update rate for display (seconds) : 0.5
• Displayed time span for time history chart (minutes) Last : 1 or 5
• Calibration method : Automatically recognized by meter
• Signal detected when calibrator placed over mic. : Calibration level set to 114.0 or 94.0 dB
• External power option (5 Vdc) : Yes with CMC51 cable via USB socket
• Analog outputs:  AC (and optional DC)  via 2.5 mm jack socket
• AC output characteristics - (Provided for DAT tape / PC wav file recording or headphone applications): Approx 0.85V RMS FSD output on selected sound level measurement range Minimum load impedance 22k.
• DC output characteristics - (Provided at time of order as option for connection to chart recorder or pc data logging system): 0 to 1.3V DC for FSD on selected range. Output corresponds to selected frequency and time weighting. 2k Output impedance
• Digital output : USB 2.0 format of instantaneous sound level via ‘mini B’ USB socket (also powers meter)
• Digital output characteristics – (real time current value output once per second): Instantaneous SPL output (software required) as per selected frequency and time weightings.
• Memory storage in up to 100 separate runs with date and time from internal real time clock: Up to 65,000+ samples per run of fixed 1 sec. instant sound level to a max. of 419,000 samples
• General:
  
• Accuracy: ANSI S1.4 Type 2, IEC 61672-1 2002-5
• Microphone type: ¼” Electret mic. in standard ½” fixed housing
• Reference Conditions: 68°F (20°C) air temperature, 65% Relative Humidity, 1013 mbar (101.325 kPa) atmospheric pressure.
• Operating Temperature Range: 32 to 104°F (0 to 40°C) (Class 2)
• Effect of Humidity: Less than ±0.5dB over the range 30 to 90% RH (non-condensing), rel. to value at ref. conditions
• Operating pressure range: 650 to 1080 mbar (65 to 108 kPa)
• Batteries: 3 x AA Alkaline or rechargeable types
• Battery Life: (hours) At least 35 hours
• Dimensions w x h x d: (in/mm) 2.8 x 8.3 x 1.2 in (71.5x 212.0x 31.0mm) including preamplifier and microphone
• Weight including batteries: (oz/gm) 8.8 oz (< 250g)
• Operator controls: buttons for power On/Off and 2 x context sensitive menu selection plus initial configuration screen
• *** Every CEL-242 is supplied with an initial individual calibration and conformance certificate plus a foam windscreen and wrist strap and 3 x AA batteries + operator manual on cdrom

• (1) CEL-242 - Digital Logging Sound Level Meter Type 2
• (1) Small foam windscreen
• (3) AA Batteries
• (1) Calibration certficate
• (1) Instruction Manual

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Instruction Manual

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Note: Prices are not binding at any time subject to change without prior notice