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1. NoiseMeters CEL24x Sound Level Meter Quick User Guide Full User Manual from support noisemeters com CONTENTS Meter Controls Power Display Settings Calibration Downloading Specifications NoiseMeters 2012 CEL24x NoiseMeters Meter Controls 1 Microphone 2 Power On Off Key 3 Display 4 Left Soft Key 5 Right Soft Key 6 USB Port 7 Auxiliary socket 2 5mm stereo CEL24x NoiseMeters Power Observe polarity when fitting batteries Do not mix battery types Fitting Batteries 1 Open the Battery Cover 2 Check the compartment is clean and dry 3 Fitthree new AA Alkaline or NIMH 4 Close the battery cover Switching On and Off Press the red On Off button to switch the meter on During power up the data logging models will show the current time and memory settings CEL24x NoiseMeters Display LAF 423 4 a om emx 123 4 LAleg muuna tau D mh H Battery Indicator Over Range Indicator Sound Level Analog Display Bar Measurement Scale Maximum Sound Level Left Key Instrument Settings Right Key Reset Measurement Average Level CEL244 and CEL246 TONIMUOUWP CEL24x NoiseMeters Settings The settings can be accessed from the Measurement Screen Press the settings key Left Key repeatedly to cycle p through the settings screens p e d Press the Right key to make changes to the settings shown Recording CEL242 and CEL246 O2. e 2 Switch Calibrator on to 114dB setting 3 Fit Calibrator over the microphone The meter automatically detects the Calibrator tone and enters Calibration Mode Downloading Measurements CEL242 246 Connect the meter to the computer s USB port The connection on the meter is found at the base behind a cover Use the CasellaDrive software to download the measurements Please visit support noisemeters com for more details and to download the software CEL24x NoiseMeters Specifications Standards IEC61672 1 Class 2 ANSI S1 4 Type 2 CEL244 246 IEC60804 Type 2 and ANSI S1 43 Type 2 Range 30 100dB and 60 130dB Freq Wtg A and C weightings Noise Floor Typically lt 33 dB A Time Wtg Fast Slow and Impulse Operating Conditions Humidity 5 to 90 RH non condensing Temp 0 C 40 C Pressure 65 to 108 kPa Calibration Auto calibration by 1kHz O 114dB or 94dB e g CEL120 2 Power External 5VDC via USB mini B Batteries 3 x AA Alkaline or NiMH rechargeable Battery Life Typically 35 hours Power Approx 65mA Connectivity Computer USB 2 0 via mini B socket AUX AC out 0 5V RMS FSD A weighted Storage CEL242 and CEL246 Memory 419 000 data points 100 measurements 65515 points per measurement Contacting NoiseMeters UK Tel 0845 680 0312 Fax 0845 680 0316 Email info noisemeters co uk Web www noisemeters co uk USA Tel 888 206 4377 Fax 888 584 2230 Email info noisemet
3. ers com Web www noisemeters com International Tel 44 845 680 0313 Fax 44 845 680 0316 Email info noisemeters com Web www noisemeters com NoiseMeters Limited NoiseMeters Inc 97 Brighton Road 3233 Coolidge Hwy Surbiton Berkley KT6 5NF MI 48072 United Kingdom USA
4. nly The symbol REC will be shown The meter will start to store the sound level every second or at a selectable logging interval for the CEL246 Pressing the Right Key again will stop the measurement storage A maximum of 100 runs can be stored Display Type The main display can be set to Bargraph default and Time History showing the max sound levels over the last 1 minute or 5 minutes Measurement Range The ranges available are 30 100dB or 60 130dB Time Weighting Set to Fast Slow or Impulse Check regulations if unsure CEL24x NoiseMeters Settings Frequency Weightings Select either A or C weighting Check your regulations but most measurements are A weighted Average Setting CEL242 and CEL246 Either Leg for Q 3 or Lavg Q 5 depending on regulations Logging Interval CEL246 Setting the logging interval for between 1 and 10s average value The CEL242 logs the level every second with no option for interval Memory and Time Date CEL242 CEL246 When the data logging meter is switched on the memory screen is displayed This example shows the memory full 100 pl mn 100 D 22 34 56 Press the Left Key to an clear the memory and 2008 02 02 the Right Key to set the H O meter s time and date CEL24x NoiseMeters Calibration Calibration should be performed using a CEL120 2 or similar Calibrator before making any important measurements 1 Select 60 130dB rang
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