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日本小野測器(ONO SOKKI)LA-1220聲級計的性能:
由于不再需要為迎合對象噪聲級而切換電平量程,所以原來那種因量程設(shè)定不合適,而造成測量結(jié)果無效的現(xiàn)象沒有了。 可以對7個項目(LA、Leq、LAE、LX、LMAX、LMIN、Lpeak)同時測量、數(shù)據(jù)可存儲或記錄在外部打印機上。另外,可以進行倍頻程分析的高性能聲級計。
產(chǎn)品功能描述
日本小野(ONO SOKKI)LA-1220聲級計的技術(shù)參數(shù)
型號 | LA-1210 | LA-1220 | LA-1240 | LA-1250 | ||
符合標(biāo)準(zhǔn) |
JIS C1502 Type 2, IEC 60651 Type2, Draft IEC 61672-Aug 1998 Class2, ANSI S 1.4 Type2 |
JIS C1502 Type 2, IEC 60651 Type2, IEC 60804 Type 2, Draft IEC 61672-Aug 1998 Class2, ANSI S 1.4 Type2 |
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Linearity range | 85dB | |||||
頻率響應(yīng) | 20Hz to 8kHz | |||||
Frequency weighting | A, C, FLAT | |||||
測量范圍 | JIS | A | 27 to 130dB | |||
C | 30 to 130dB | |||||
FLAT | 35 to 130dB | |||||
IEC | A | 26 to 140dB | ||||
C | 31 to 140dB | |||||
FLAT | 36 to 140dB | |||||
測量參數(shù) | Instantaneous SPL (LP) | Yes | Yes | Yes | Yes | |
Equivalent continuous SPL (Leq) | Yes | Yes | ||||
Sound exposure level (LAE) | Yes | Yes | ||||
Percentile SPL (Lx) | Yes | Yes | ||||
Maximum value (Max) | Yes | Yes | Yes | Yes | ||
Display update | Numeric: 1 s, Bar graph: 100 ms | |||||
記憶功能 | manual | 300 addresses | 300 addresses | |||
block | 14400 addresses | |||||
模擬輸出 | AC: 0.707Vrms, DC: 2.5V (F.S.) 0.5V/10dB | |||||
電源 | Two type AA batteries | |||||
電池壽命 | approx. 40 hours (alkaline batteries), approx. 24 hours (manganese batteries) | |||||
工作環(huán)境溫度 | -10 to +50°C | |||||
工作環(huán)境濕度 | 30 to 90%RH | |||||
Outer dimensions/尺寸 | approx. 70 x 240 x 30mm | |||||
Weight/重量 | approx. 260g |