•Precision Integrating Sound Level Meter
with 1/3 octave real-time analyzer NA-27


•Dual Measurement with main and sub
•Real-time 1/1-octave and 1/3-octave analysis
•Infrared rays data communication
•8-hour continuous operation with alkaline batteries
•Memory max. 10000 data capacity
•Various trigger functions (external trigger, level trigger and time trigger)
•Data exclusion (back-erase) function
•Time delay setting function
•Back up function
•Large display with backlighting

Specifications
Applicable standards IEC651: 1979 Type 1 IEC804: 1985 Type 1
ANSI SI.11 Type 1D, IEC 1260-1995
Dual measurement and real-time frequency analysis Main and sub
Individual Frequency weighting and time weighting settings for main and sub
1/1, or 1/3 octave band real-time frequency analysis in main channel
Measurement functions Instantaneous sound pressure level (Lp)
Equivalent continuous sound presure level (Leq)
Sound exposure level (LE)
Maximum (Lmax) and Minimum (Lmin) sound pressure level
Percentile sound pressure level (Lx)
Takt-max sound pressure level (Ltm3, Ltm5)
Waveform peak hold (Lpeak)
Max. Measurement Level 140 dB rms, 133 dB at c.f. 3, 143 dB peak for peak hold
Frequency Range 20-12500 Hz (including microphone), 10-20000 Hz (amplifier only)
Time weighting Main channel: Fast, Slow, 35 ms, 10 ms
Sub channel: Fast, Slow, 35 ms, 10 ms, Impulse, Peak (peak hold)
Microphone 1/2-inch prepolarized condenser type UC-53A
Display Backlit LCD panel (192 X 192 dots)
Numeric display: 4-digit display, update cycle 1s, resolution 0.1 dB
Bar graph indication:
Sound level meter : Scale range 60 dB, update cycle 0.1s
Analyzer: Scale range 70 dB update cycle 0.1s
Internal Memory Manual and auto store mode for instantaneous value and processing results
Auto single mode: Up to 10,000 data (for SLM), 4000 data (for 1/1 oct. analysis), 2000 data (for 1/3 oct. analysis)
Infrared rays communication Data transmission with a PC
Remote control by an infrared rays controller
Power requirement Four IEC R14P (size "C") batteries
Battery life: Continuous operation with LR6 (alkaline) approx. 8 h (1/3 oct. analysis)
AC adapter NC-94 (option): 100 to 240 V
Dimensions and weight 300 (L) X 100 (W) X 50 (D) mm
Approx. 800 g (incl. batteries)