Center 323 - Technical Specifications

Sound Level Meter
2
4. SPECIFICATIONS
Standard applied: IEC61672-1 Class 2, ANSI S1.4 Type2.
Frequency range: 20Hz ~ 8KHz
Measuring level range: 30 ~ 130dB
Frequency weighting: A / C
Microphone: 1/2 inch electret condenser microphone
Display: Liquid Crystal Display
Digital display: 4 digits
Resolution: 0.1dB
Display Update: 0.5 sec.
Analog display: 30 segment bargraph
Resolution: 2dB
Display Update: 50 mS
Time weighting: FAST , SLOW
Level ranges: Lo : 30 – 90 dB
Med : 50 – 110 dB
Hi
: 70 – 130 dB
Auto : 30 – 130 dB
Accuracy: ±1.4dB ( under reference conditions @ 94dB, 1KHz )
Dynamic range: 60 dB
Alarm function: “OVER” is when input is more than upper limit of range.
“ UNDER ” is when input is Less than lower limit of range.
Data logging Capacity: 64,000 records
AC output: 1 Vrms at FS ( full scale )
( FS︰means the upper limit of each level range.)
DC output: 10mV / dB
Power supply: 4 AAA,NEDA 24A, IEC LR03 batteries
Power life: About 24hrs ( alkaline battery )
Power consumption: Approx. 0.2W
External power supply: 5 V
DC ( micro USB plug)
Operation temperature: 0 to 40C ( 32 to 104F )
Operation humidity: 10 to 90%RH
Storage temperature: -10 to 60C ( 14 to 140F )
Storage humidity: 10 to 75%RH
Dimensions: 264(L)×63(W)×29(H)mm; 10.4(L)×2.5(W)×1.1(H)inch