| Applicable Standards |
IEC 61672-1:2013 (Integrating, Sound Exposure and Sound Level Meters)
IEC 60651:2001 (Sound Level Meters)
IEC 60804:2000 (Integrating Function) |
| Microphone and Preamplifier |
Type 7146A Pre-Polarised ½” (13.2 mm) Free-Field, Electret Condenser Microphone: 20Hz – 20KHz ± 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 |
Total Measuring Range: 41-140
Linear operating range (IEC61672-1): 65dB 3
3 Display Ranges (IEC61672-1): 35-100 55-120 - Reference Range 75-140 |
| Noise Floor |
Typical ’A’ Weighting ‘C’ Weighting |
| Frequency Weighting |
‘A’ and ’C’ to IEC 61672-1:2002 and IEC 60651:2001 |
| Frequency Range |
12.5 Hz - 20 kHz (including microphone)
1 Hz - 20 kHz (electrical characteristics) |
| Time Weighting |
Slow and Fast |
| Instrument Response |
Simultaneous rms. and Peak |
| Measurement Response |
Lp (Sound Pressure Level), Leq (Equivalent Sound Level), Lmax (maximum Level), Cpeak (Max. Peak Level), LEpd (Sound Exposure Level), LAE (Single Event Sound Exposure 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 |
| Output |
AC Output = 16.4mVrms at 94dB (un-weighted and not affected by range) DC Output = 40mV/dB (weighted and ranged) |
| Power Requirement |
Batteries: 1 x 6LR61 (size PP3), Life: >12 hours (alkaline batteries, continuous operation) |
| Size |
Dimensions: 60mm (width) x 30mm (depth excluding pocket clip) x 135mm (height without microphone) or 210mm (height with microphone) |
| Weight |
200gms (without battery) |
| Manuals |
Multi-language manuals*: French, German, Spanish and Italian |