濟南千斗工業(yè)科技有限公司專業(yè)代理銷售 日本理音（RION）公司生產(chǎn)的NA-28噪音分析儀是一款高性能聲級計。
日本RION精密噪音計NL-27：
1、使用方便---主要功能通過特制的反光鍵獲得。
2、*的高對比度反光式TFT-LCD彩色顯示器。
3、同時測量和顯示1/1和1/3倍頻程。
4、通過鍵擊實現(xiàn)在聲級計顯示和分析儀顯示兩者間切換。
濟南千斗工業(yè)科技有限公司專業(yè)代理銷售 日本理音(RION)公司生產(chǎn)的NA-28噪音分析儀是一款高性能聲級計。它綜合采用了(切邊)技術(shù)并有*的質(zhì)量和使用方便的特性。
日本RION精密噪音計NL-27：
1、使用方便---主要功能通過特制的反光鍵獲得。
2、*的高對比度反光式TFT-LCD彩色顯示器。
3、同時測量和顯示1/1和1/3倍頻程。
4、通過鍵擊實現(xiàn)在聲級計顯示和分析儀顯示兩者間切換。
5、此儀表把數(shù)據(jù)以文本文件保存到CF存儲卡的能力很大。
6、與計算機連接方便又靈活(用CF存儲卡和USB虛擬盤)。
7、用堿性電池使用壽命很長。
日本RION精密噪音計NL-27主要性能
- 實時1倍頻程(16Hz到16kHz)分析或者1/3倍頻程(12.5Hz到20kHz)分析
- 實時同時進(jìn)行1倍頻程(16Hz到8kHz)分析和1/3倍頻程(12.5Hz到12.5kHz
- 測量數(shù)據(jù)作為文本文件直接地保存到CF存儲卡
- 測量和記入1倍頻程分析和/或者1/3倍頻程分析的Leq、Lmax、Lmin和5個百分位聲級電平(LN)
- 自動保存300000個數(shù)據(jù)集或者1000小時1秒1/3倍頻程到128MCF存儲卡
- 自動保存1000個數(shù)據(jù)集或者100個1秒1/3倍頻程到內(nèi)存
- 人工保存1000個數(shù)據(jù)集到內(nèi)存或者100000個數(shù)據(jù)集到128MCF存儲卡
- 線性操作量程:聲級計工作方式(全通)為110dB;分析儀工作方式(頻譜)為95dB
- 用4節(jié)C號尺寸堿性電池使用壽命為14小時
- 在主、次通道上同時選用時間加權(quán)和頻率加權(quán)
- 在次通道上實現(xiàn)F(快)、S(慢)、10ms時間加權(quán)加上峰值和脈沖
- 用CF存儲卡或者USB傳遞數(shù)據(jù)(聲級計/CF存儲卡作為虛擬盤)
- 能用內(nèi)部或者外部觸發(fā)器開始測量
- 比較器輸出到觸發(fā)器外部裝置
- 主通道和/或者次通道的AC輸出和DC輸出
- NL-28聲級計是日本理音推出的聲級計，NL-28是替代原來NA-27的新產(chǎn)品!
Sound Level Meter and 1/3 octave band real-time analyzer NA-28
- Real Time Octaves (16 Hz to 16 kHz) or 1/3 octaves (12.5 Hz to 20 kHz)
- Real Time Simultaneous Octaves (16Hz to 8kHz) and 1/3 Octaves (12.5Hz to 12.5kHz)
- Data stored as text files direct to CF card
- Measures and logs eq, max, min and 5 percentile values (LN) in octaves and/or 1/3 octaves
- Auto Stores 300 000 data sets or 1 000 hours of 1 second 1/3 octaves onto 1 GB CF card
- Auto Stores 1000 data sets or 10 000 of 1 second 1/3 octaves to internal memory
- Manual Storage for 1 000 data sets internally or 100 000 data sets to 1 GB CF card
- Linearity 110 dB in Sound Level Meter Mode and 95 dB in Analyzer Mode
- 16 hours battery life with 4 Alkaline"C" Cells
- Main and Sub-Channel for simultaneous selection of 2 time or frequency weightings F(Fast), S(Slow), 10 ms Time Weightings plus Peak & Impulse on Sub-Channel
- Data transfer using CF card or USB (meter/CF card appearing as virtual disk)
- Measurement can be started by internal or external trigger
- Comparator output to trigger external devices
- AC and DC outputs of main and/or sub-channel
- Expandable functionality using programme cards
- IEC 61672-1:2002 Class 1，IEC 61260:1995 Class1，ANSI S1.4-1983 Type 1，ANSI S1.11-2004 Class 1
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Applicable specifications IEC 61672-1:2002 Class 1, IEC 61260:1995 Class 1, ANSI S1.4-1983 Type 1, ANSI S1.11-2004 Class 1 Measurement functions With both a sound level meter mode and analyzer mode, it is capable of simultaneous main channel and sub-channel measurement in either mode. Time and frequency weighting are set separay for the main and sub-channels. Measurement modes Sound level meter mode: Measurement of all-pass values indicated in the measurement items below in the main or sub-channel, Measurement of either Lpeak or Ltm5 in the sub-channel
Analyzer mode : Real-time octave and 1/3 octave band analysis and all-pass measurement in the main channel, Only all-pass measurement in the sub-channelMeasurement items Simultaneous measurement of all items in the selected time weighting and frequency weighting characteristics
Instantaneous sound pressure level Lp, Equivalent continuous sound pressure level Leq, Sound exposure level LE, Maximum sound pressure level Lmax, APMax and BandMax can be selected as maximum, Minimum sound pressure level Lmin, Maximum 5 time ratio sound level LN (1 to 99%, 1% Step), Calculation from Lp or Leq 1secMeasurement time 1 to 59 sec, 1 to 59 min, 1 to 24 hours Microphone and preamplifier Microphone UC-59, Preamplifier NH-23 Measurement range A: 25-130dB, C: 33-130dB, Z: 38-130dB Frequency Range 10 Hz-20 kHz Time weighting Main:Fast, Slow, 10ms
Sub:Fast, Slow, 10ms, ImpulseDisplay Color semi-transparent TFT-LCD display with backlight (240 X 320 dots) Power requirement Four IEC R14P (size"C") batteries or external power supply
Operating time
Manganese batteries: R14PU, 6 hours
Alkaline batteries: LR14, 16 hours (10 hours if backlight is continuously activated)Dimensions and weight 331 (H) X 89 (W) X 51 (D) mm , approx. 730 g (including batteries)
