Brand New CENTER 321 Sound Level Meter 30~130 dB (PC interface)

Description

Description
Brand New CENTER 321 Sound Level Meter 30~130 dB (PC interface)
Specifications:
Applicable standards:IEC651 TYPE2, ANSI S1.4 TYPE2
Accuracy:Plus or minus 1.5 dB (in reference to the sound pressure level, 94 dB @ 1 KHZ)
Frequency response:31.5 HZ - 8 khzqunte17. Cn
Dynamic range:50 dbqunte17. Cn
Measuring range:Lo = 30 ~ 80 dBqunte17. Cn
Med = 50 ~ 100 dBqunte17. Cn
Hi = 80 ~ 130 dBqunte17. Cn
Auto dBqunte = 30 ~ 130
Frequency weighting features:A/C
Time weighted features:rapid (FAST) 125 milliseconds, SLOW (missile) 1 second
The microphone:1/2 inch polarization capacitance
Display:4 digits, resolution of 0.1 dB, numerical update 2 times per second
Maximum read lock:MAX HOLDqunte17. Cn
Minimum read value lock:MIN HOLD
Overload indicator:"OVER", "UNDER" sign qunte17. Cn
Analog signal output:AC/DC signal by the headphone output qunte17. Cn
AC = 1 VRMS (range), about 100 Ω output impedance
DC 10 mv/dB, about 1 k Ω output impedance
Power supply:9 v battery qunte17. Cn
Battery life:About 50 hours (alkaline batteries)
Operating temperature and humidity:0 ~ 40 ℃, 10% ~ 90% RHqunte17. Cn
The storage temperature and humidity:- 10 ℃ ~ + 60 ℃, 10% RH to 75% RH
dimensions:275 (length) x 64 (width) x 30 mm (high)
Weight:About 285 g (including battery) qunte17. Cn
Attachment:Use manual, adjusting rods, 3.5 phi headphones plug, sponge ball (wind cap) holster
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