Applicable standard
IEC 61672-1 : 2013 Class 2
Microphone
1/2-inch backelectret-type
Preamplifier
MI-3111 Preamplifier for mocrophone
Linearity range
100 dB (Wide range), 80 dB (Normal range)
Measurable frequency range
10 Hz to 8 kHz(IEC, JIS)
Measurement level range
A : 26 to 135 dB(IEC, JIS) C : 31 to 135 dB(IEC, JIS) Z : 36 to 135 dB(IEC, JIS)
Frequency weighting
A,C,Z
Intrinsic noise
A : 20 dB or less C : 25 dB or less Z : 30 dB or less
Level range
20 to 90 dB, 30 to 90 dB, 40 to 100 dB, 50 to 110 dB, 60 to 120 dB (Normal range), 70 to 130 dB, 40 to 120 dB (Wide range)
Time weighting
FAST, SLOW
Measurement items
Lp, Leq , LE, Lmax, Lmin, Lpeak, LN(Lhigh, L5, L10, L50, L90, L95, Llow, Lave)
Sampling interval
31.25 s (other than LN ) 100 ms(LN)
Measurement time
Manual, arbitrary setup (199 h 59 m 59 s max.)
Internal calibration signal (REFOUT)
1 kHz sine wave (For upper limit level range : -6 dB(normal range), -16 dB(wide range))
Display
LCD with LED backlight semitransparent (124 x 64-dot) Measurement value display by numeric and bar indicators List display and trend graph display for various kinds of calculated values Displays of date, time, measurement time, and conditions of various kinds of instruments
Display update time
Display by numeric:1 s, bar indicator: 0.1 s, trend screen: 0.2 s
Manual memory function
Total calculated values: 100 addresses
Measurement condition memory function
Condition memories (9 kinds)
Resume function
Settings activated at power ON can be selected from follows; settings used at previous power OFF, factory setting, and any condition memory number which is set from menu.
Backup function
The backup of data stored in clock and memory can be performed by built-in secondary power source. Time for full charged: approx. 24 hours Backup period: more than 3 months (when stored at temperature of 23 C)
Power requirement
Size AA battery 2 pcs. (manganese (6R) or alkaline (LR6) or oxyride (ZR6)) or PB-7090 AC adapter (option))
Battery life (continuous using)
Approx. 8 hours (LR6 alkaline battery in use / 23 C/ backlight off / not RS-232C?USB in use)
Operating (storage) temperature range
-10 to 50 C (-20 to 60 C)
Operating (storage) humidity range
25 to 90 %RH (10 to 90 %RH) with no condensations
Outer dimensions
Approx. 78(W) 263(H) 47(D) mm
Weight
Approx. 360 g (including batteries)