| Applicable Standards |
IEC 61672-1:2002 (Integrating, Sound Exposure and Sound Level Meters) |
| Microphone and Preamplifier |
Type 2 Pre-Polarised ½” (13.2 mm) Electret Free-Field, Electret Condenser Microphone: 20Hz – 8KHz ± 2dB –32 dB ± 3 dB re 1V/Pa Custom pre-amplifier design Typical actuator to free-field correction factor (based on 500Hz=0) is shown below |
| Display |
Back-lit LCD panel (8x1 Characters)
Alpha-Numeric display for measured results |
| Level Range |
Measuring Range: 35-140
Linear operating range (IEC61672-1): 65dB
3 Measurement Ranges (IEC61672-1): 35-100
55-120 - Reference Range
75-140 |
| Noise Floor |
Typical ’A’ Weighting <32 dB(A) rms.
‘C’ Weighting <38 dB(C) rms. |
| Frequency Weighting |
‘A’ and ’C’ to IEC 61672-1:2002 and IEC 60651:1979+A1+A2 |
| Frequency Range |
20 Hz - 8 kHz (including microphone)
1 Hz - 20 kHz (electrical characteristics) |
| Time Weighting |
Slow and Fast |
| Instrument Response |
Simultaneous rms. and Peak |
| Measurement Parameters |
Lp (Sound Pressure Level), Lmax (maximum Level), Cpeak (Max. Peak Level)
Other Displays: Elapsed time, Overload, Battery Life |
| Calibration |
Software controlled 91.0 to 120.0 dB (1kHz) in 0.1 dB steps |
| Processing |
A to D Converter: 12-bit
Controller: 8MHz, micro-controller |
| Power Requirements |
Batteries: 1 x 6LR61 (size PP3), Life: >12 hours (alkaline batteries, continuous operation). |
| Dimensions |
60mm (width) x 35mm (depth excluding pocket clip) x 135mm (height without microphone) or 210mm (height with microphone) |
| Weight |
220gms (including battery) |
| Manuals |
Multi-language manuals*: French, German, Spanish and Italian. |