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噪音計(jì)
噪音計(jì)

訪問(wèn)量：1884

產(chǎn)品時(shí)間：2024-10-07

簡(jiǎn)要描述：NL-28聲級(jí)計(jì)是日本理音推出的聲級(jí)計(jì)，取代NL-27，比27具有更多的功能，測(cè)量范圍更廣130dB,

詳情介紹

NL-28聲級(jí)計(jì)是日本理音推出的聲級(jí)計(jì)，NL-28是替代原來(lái)NA-27的新產(chǎn)品!

上海熙浩代理銷(xiāo)售日本理音噪音計(jì)， ：（銷(xiāo)售部）

Sound Level Meter and 1/3 octave band real-time analyzer NA-28

  1. Real Time Octaves （16 Hz to 16 kHz） or 1/3 octaves （12.5 Hz to 20 kHz）
  2. Real Time Simultaneous Octaves （16Hz to 8kHz） and 1/3 Octaves （12.5Hz to 12.5kHz）
  3. Data stored as text files direct to CF card
  4. Measures and logs eq, max, min and 5 percentile values （LN） in octaves and/or 1/3 octaves
  5. Auto Stores 300 000 data sets or 1 000 hours of 1 second 1/3 octaves onto 1 GB CF card
  6. Auto Stores 1000 data sets or 10 000 of 1 second 1/3 octaves to internal memory
  7. Manual Storage for 1 000 data sets internally or 100 000 data sets to 1 GB CF card
  8. Linearity 110 dB in Sound Level Meter Mode and 95 dB in Analyzer Mode
  9. 16 hours battery life with 4 Alkaline"C" Cells
  10. 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
  11. Data transfer using CF card or USB （meter/CF card appearing as virtual disk）
  12. Measurement can be started by internal or external trigger
  13. Comparator output to trigger external devices
  14. AC and DC outputs of main and/or sub-channel
  15. Expandable functionality using programme cards
  16. IEC 61672-1:2002 Class 1，IEC 61260:1995 Class1，ANSI S1.4-1983 Type 1，ANSI S1.11-2004 Class 1

Specification ：

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-channel
Measurement 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 1sec
Measurement 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, Impulse
Display 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）



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