|
technical parameter
Measurement range: 30-100dB, 60-130dB two ranges
Dynamic range: 70dB
Accuracy: ANSI S1.4 Type 2, IEC 61672-1 2002-5
Frequency weighting: A，C
Time weighted: slow, fast, and pulse
Data display: Simultaneously display real-time noise Lp and maximum noise Lmax
Zui maximum value retention: Zui maximum value displays no attenuation until the user presses the reset button
Display screen: 128 × 128 dot matrix LCD digital display, real-time analog bar chart display
Display resolution: 0.1dB for digital display, 1dB for analog display
Display update: Updated every 0.5 seconds
Graphic display: Time span of 1 minute or 5 minutes
Calibration method: Instrument automatic recognition calibration
Calibration Sound Level: 114.0dB or 94.0dB @ 1kHz
Analog output: 2.5mm headphone jack, 0.85V RMS, minimum impedance 22k Ohm
DC output: 2.5mm headphone jack (optional), 0-1.3VDC, impedance 2k Ohm
Digital output: USB 2.0 interface, outputting real-time sound pressure level (optional software),
Output measurement value once per second
Working temperature: 0-40 ℃
Battery: 3 AA alkaline batteries (with a lifespan of over 35 hours) or rechargeable batteries
External power supply: 5VDC, USB interface (optional)
Size and weight: 71.5 × 212 × 31mm, 250g (including battery)
|
Digital and graphic display
CEL-240/K1 standard configuration
|
