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소음측정기(Sound Meter) ▷ "0"dB, FFT 정밀소음계
"0"dB, FFT 정밀소음계
  모델명 : TYPE-6236
  원산지 : 일본
  제조사 : ACO
  가   격 : 문의
  분류명 : FFT소음계,1/1&1/3옥타브 실시간 소음분석계,1/1 and 1/3-octave Real-time FFT Sound Level Meter
product
제품사양
적용사례
기술자료
 

 

1/1 and 1/3-octave Real-time FFT Sound Level Meter

TYPE-6236

On-site measurement of environmental noise is strongly expected to have high resolution and real-time analyzing function on the spot. Moreover, in the field of product development such as car parts electric appliances, etc., it is required to measure and analyze the sound of ultra-low level more accurately, corresponding to the rise of consciousness that the acoustic characteristics such as silence, tone quality, etc., should be the part of the product, which is deeply related to our human hearing sensation. The function of Type 6236 can be extended quite easily to those such as measurement of various parameters for environmental noise, only by inserting option FFT Analysis Card into the card slot. Also, this equipment is provided with newly developed “0-dB function” for measuring ultra-low sound pressure level, symbolizing the next-generation sound level meter with extremely high resolution and reliability.

World first!! “0-dB measurement-function”

0-dB measurement-function

By employing the original DSP technology, which eliminates the self-noise of the microphone with preamplifier, the lower limit of measurement has been drastically extended to lower than 0 dB-SPL. Linearity range, extended to 100 dB in the usual state, further expands to that corresponding to the measurement range 0~80dB(A) by holding the 0-dB function in ON position.

It enables to measure ultra-low sound pressure level, so displaying its greatest power as in the quietness measurement of, or tone quality evaluation of, various silent-type IT/OA equipments, as well as in the measurement of air-conditioning noise or sound isolation in a concert hall with ambient noise below NC-20.

※Technology relating to “0-dB measurement function” is the fruit of joint research work with Shizuoka University.

Function Enhancement -Program card (SD card)-

Function Enhancement -Program card (SD card)-

Replacing the card with SD card (option) enables to add the specified analyzing function to TYPE6236.

-1/1 and 1/3-octave Real-time analysis card

-FTT analysis Card

-RSR card (Real Sound Recording Card)

Embedded high precision microphone

Embedded high precision microphone

TYPE6236 is equipped with high precision electret condenser microphone(TYPE7052NR) which ACO is most proud of. The measurement frequency range covers entire audible frequencies, 20Hz to 20kHz.

ACO Microphone is made as one with highly anti-shock capability

ACO Microphone is made as one with highly anti-shock capability

“Microphone has a image of breakable object needing frequent replacement”……』

Such an image is broken down by ACO microphone of highly anti-shock capability, developed through lengthy research and development work.ACO Microphones, clearing various strength tests, delivers the customers from very delicate handling of the microphone, offering the environment focused on sound measurement.

Measurement items

A-weighted sound pressure level(L A /L C )

A-weighted sound pressure level is measured when time weighting is [Fast] or [Slow], and Frequency weighting [A] The instantaneous A-weighted sound pressure level is displayed on the liquid crystal screen. Displayed digital data is updated in each second, as well as bar graph in each 0.1 second.


Sound Pressure Level(L p )

Sound pressure level is measured when time weighting is [Fast] or [Slow], and Frequency weighting [Z]. The instantaneous Sound pressure level is displayed on the liquid crystal screen. Displayed digital data is updated in each second, as well as bar graph in each 0.1 second.


Equivalent continuous A-weighted sound pressure level (L Aeq )

Set the Time weighting to 「Fast or Slow」, and the frequency weighting to [A]. Measurement time is selected from
1sec/3sec/5sec/10sec//1min/5min/10min/15min/30min/1h/8h/12h/24h. Moreover the manual measurement is available. Data in past 3 sec or 5 sec could be deleted when [Pause] key is pressed during the measurement. The process of L Aeq calculation is displayed on the liquid crystal screen.


Percentile level(L N )

By pressing 「Start」Key, the percentile level (L max ,L05、L10、L50、L90、L95、L min ), the Sound exposure level(L Ae ), A-weighted Sound pressure level(L A ) and Equivalent continuous A-weighted sound pressure level(L Aeq ) can simultaneously be measured.


Additional index

  • Peak sound pressure level(L peak )
  • C-weighted peak sound level(L Cpeak )
  • C-weighted equivalent continuous sound level(L ceq )
  • Power average of maximum sound level in a given interval(L atm5 )
  • Impulse sound level(L AI )
  • Impulse equivalent continuous sound level(L AIeq )

 

 

Type

TYPE 6236

Name

1/1 and 1/3-octave Real-time FFT Sound Level Meter

Applicable Standards

JIS C1509-1:2005 ClassⅡ, IEC 61672-1:2002 Class Ⅱ

A:28~130dB (0~80dB/0-dB measurement function in ON)
C:36~130dB
Z(FLAT):40~130dB
C peak:55~141dB
Z(FLAT)peak:60~141dB

Self-noise level

The lower limit of the measurement range in dB lies 6dB higher than self-noise level.

Frequency Range

20Hz~20kHz (Conforms with measurement law 20Hz~8kHz)

Microphone Type
(Sensitivity)

TYPE 7052NR(-33dB, Stand-alone-31dB)

Level Range Control

10dB 6step
20~80dB、20~90dB、20~100dB
20~110dB、30~120dB、40~130dB
(0~80dB/0-dB measurement function in ON)

Linearity Range

100dB

Time weighting

Fast、Slow、Impulse

Frequency weighting

A、C、Z(FLAT)

Measurement items

Sound pressure level(L p )、A-weighted sound pressure level, C-weighted sound pressure level(L A /L C )、Equivalent continuous A-weighted sound pressure level(L Aeq )、 Sound Exposure level(L AE )、Maximum sound pressure level(L Amax )、Minimum sound pressure level(L Amin )、Percentile sound pressure level(5 freely selectable values、L AN )、Peak Sound Pressure level(L peak )、C- weighted Peak Sound Pressure level(L Cpeak )、Power average of maximum sound pressure level in a given interval(L Atm5 )、Impulse Sound pressure level(L AI )、Impulse equivalent continuous sound pressure level(L AIeq )

Measurement time

1s/3s/5s/10s
1min/5min/10min/15min/30min
1h/8h/12h/24h
Manual(Max. 199h59m59s)

Sampling Time

20.8μs(L eq 、L max 、L min )、100ms(L N )

Data clear Function

Pause, and a function that deletes preceding 3 or 5 sec. dat
Memory start;Selectable Auto or Manual

Timer function

A marker can be set to start and stop the measurement at any specified moments.

Display

Liquid crystal and Backlight(128×64 points)

Digital display

Display range:4digit display、Display cycle:display Period: 1s

Bar display

Display Period:0.1s

Warning

Over;+3dB from upper limited scale
Under;-0.6dB from lower limited scale

Battery display

Battery 5 steps display

Date

year/month/day/hour:minute:second

T Pause

ormal pause function, as well as the function of canceling the data before pausing the measurement, are available.

Calibration signal

Electric calibration with internal oscillator (1kHzsine wave)

AC Output

φ2.5Jack
Output:1Vrms(FS)、Output impedance:600Ω、Load impedance:more than 10kΩ

DC Output

φ2.5Jack
Output:2.5V(FS)、0.25V/10dB Output impedance:50Ω、Load impedance: more than10kΩ

RMS detection circuit

True RMS detection circuit(computing type)

Processing

Digital

Data Storage Functions

Sound pressure level or Processed values stored in built-in Memory or Memory card
Manual Storage:Sound level, Calculation value, Memory time,Store the Sampling to Built-in memory or on Memory card,
Auto Storage:Sampling interval 100ms, 200ms, sound level,Leq etc. Processing Card :Storage of calculation results

I/O

Direct output to printer, control and output data to computer Digital output of real-time noise waveform with USB interface

Comparator Output

Comparator Function with threshold level

Battery Type

Four 1.5V Alkaline cells IEC type LR6, Optional AC adapter

Battery life

Alkaline dry cell ; Approx.9hours when Switch on a back light ;Approx.1/3

Operating temperature

Temperature:-10~50℃
Humidity:30%~90%RH(no condensation)

Size

86(W) x 285(H) x 46(D)

Weight

Less than APPROX(450g(including Batteries)

기본 구성품

  • Main Body
  • Memory Card(SD Card)
  • Windscreen
  • Batteries
  • Screw Driver
  • Strap
  • Instruction Manual(CD)
  • Carrying Case

옵션 구성품

  • 1/1/1 and 1/3-octave Real-time Analysis Card
  • FFT Analysis Card
  • RSR Card ( Real Sound Recording Card )