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	소음측정기(Sound Meter) ▷ 저주파 FFT소음계

저주파 FFT소음계

모델명 : TYPE-6238L

원산지 : 일본

제조사 : ACO

가 격 : 문의(031-753-9550)

분류명 : 소음측정기, Low frequency sound Level meter

product

제품사양

적용사례

기술자료

Low frequency sound pressure level meter

TYPE-6238L

In accordance with growing environment conservation, the evaluation of environmental noise such as traffic noise or industrial equipment noise, or better understanding of the labor health environment at offices, factories, etc. are getting more important than ever before. On-site measurement of environmental noise is strongly expected to have high resolution and real-time analyzing function on the spot.
Low frequency sound pressure level meter,Precision Sound level meter TYPE-6238L displays its greatest force in these cases.
In Low frequency sound pressure level meter TYPE-6238L , replacing the card with G-card enables to measure G-weighted sound pressure level and 1/3-octave real-time analysis. This equipment is symbolizing the next-generation sound level meter with extremely high resolution and reliability.
In Precision Sound level meter TYPE-6238L , the function can be extended quite easily to those such as measurement of various parameters, only by inserting option FFT Analysis Card into the card slot.

Windscreen for wind power system measurement

This dedicated windscreen is used for wind power system noise measurement, provided with all the required performance; wind noise reduction, waterproof property and acoustic transparency.*

This outstanding performance was realized by the specified sheet device developed through the business-academia collaboration of ACO Co., Ltd., Shizuoka University and Tomoegawa Co., Ltd, which offers exceptional and non-conventional capability of water-proof and almost 100% acoustic transparency.

*This dedicated windscreen has been developed through the business-academia collaboration of Shizuoka University, Tomoegawa Co., Ltd. and Aco Co., Ltd.

Function Enhancement -Program card (SD card)-

Replacing the card with SD card (option) enables to add the specified analyzing function to TYPE6238L.

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

- FTT analysis Card

- RSR card (Real Sound Recording Card)

G-weighted sound pressure level (TYPE-6238L)

Replacing the card with G-card enables to measure G-weighted sound pressure level and 1/3-octave real-time analysis.

Frequency characteristics of microphone

TYPE7146NL is the field type electret condenser microphone which complies with IEC651 TYPE1.

It has also wide dynamic range and frequency range, as well as high sensitivity.

It is easy to operate, free from need of supplying DC bias voltage.

Ultralow-frequency sound level analysis

Ultralow-frequency sound level (1Hz～) can be analyzed by using Low frequency sound pressure level meter TYPE6238L , Sound card TYPE8833, and FFT analyzer 'SpectraPLUS Pro'.

item

Type	TYPE6238L
Name	Low frequency sound pressure level meter
Applicable Standards	JIS C 1514:2002 ClassI ISO　7196:1995
Frequency Range	FLAT(DR:1～500Hz) FLAT(FLAT:1～100Hz) G-weighted sound pressure level:LG（G ISO 7196 Reference) 1/3-octave(FLAT:1～80Hz)
Microphone Type (Sensitivity)	TYPE 7146NL(-28dB, Stand-alone -26dB)
Level Range Control	FLAT,G-weighted sound pressure level 20～80dB, 20～90dB 30～100dB, 40～110dB 50～120dB, 60～130dB
Frequency analysis band	1/3-octave 1Hz,1.25Hz,1.6Hz,2Hz,2.5Hz,3.15Hz,4Hz,5Hz 6.3Hz,8Hz,10Hz,12.5Hz,16Hz,20Hz,25Hz,31.5Hz 40Hz,50Hz,63Hz,80Hz,OA,AP,G
Measurement Level	G:40dB～130dB FLAT:50dB～130dB 1/3-octave:30dB～130dB
Overload characteristic	+3dB from upper limited scale
Self-noise level	The lower limit of the measurement range in dB lies 8dB higher than self-noise level.
Time weighting	Fast,Slow,10sec
Frequency weighting	G(Digital),FLAT
Measurement items	Low frequency sound pressure level(L DR ) Low frequency sound pressure level(L F ) G-weighted sound pressure level(L G ) Equivalent continuous sound pressure level(L eq ) Maximum sound pressure level(L max )
Measurement time	1s,3s,5s,10s,1min,5min,10min,15min,30min,1h,8h,12h,24h Manual(Max. 199h59m59s)
Sampling Time	20.8μs(L DReq ,L DRmax ,L Peq ,L Pmax ) 666μs(L Geq ,L Gmax )
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) 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　：　5 steps display Date　：　year/month/day/hour：minute：second
Calibration signal	Electric calibration with internal oscillator (20Hz sine wave)
Output	AC Output:φ2.5Jack Output：1Vrms(FS) Output impedance：600Ω Load impedance：more than 10kΩ DC Outputφ2.5Jack Output：2.5V(FS),0.25V/10dB Output impedance：50Ω Load impedance： more than 10kΩ
RMS detection circuit	True RMS detection circuit(digital computing type)
Processing	Digital
Pause	Normal temporary pause function, as well as the function of canceling the data before pausing the measurement, are available.
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	Four 1.5V Alkaline cells IEC type LR6, Optional AC adapter Battery life(continuous time):Alkaline dry cell ; Approx.9hours when Switch on a back light ;Approx.1/3 Consumption ampere:150mA (6V input) when processing function is OFF
Operating temperature	Temperature：-10-～50℃ Humidity：30%～90%RH(no condensation)
Size	85(W) x 328(H) x 48(D)
Weight	Less than APPROX 450g(including Batteries)
Type	TYPE6238L
Name	Precision Sound level meter
Applicable Standards	JIS C1509-1 :2005 classI IEC 61672-1:2002 ClassI
Frequency Range	20Hz-12.5kHz(Conforms with measurement law) 1Hz～20kHz(Z) 20Hz～20kHz(A)
Microphone Type (Sensitivity)	TYPE 7146NL(-28dB, Stand-alone -26dB)
Level Range Control	10dB step 6step 20～80dB, 20～90dB 30～100dB, 40～110dB 50～120dB, 60～130dB
Measurement Level	A:28～130dB Z:39～130dB
Overload characteristic	+3dB from upper limited scale
Self-noise level	The lower limit of the measurement range in dB lies 8dB higher than self-noise level.
Linearity Range	75dB
Time weighting	Fast,Slow
Frequency weighting	A,Z
Measurement items	Sound pressure level(L p ) A-weighted sound pressure level(L A ) 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 ) Power average of maximum sound pressure level in a given interval(L Atm5 )
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 ),64ms(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) 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　：　5 steps display Date　：　year/month/day/hour：minute：second
Calibration signal	Electric calibration with internal oscillator (1kHz sine wave)
Output	AC Output:φ2.5Jack Output：1Vrms(FS) Output impedance：600Ω Load impedance：more than 10kΩ DC Outputφ2.5Jack Output：2.5V(FS),0.25V/10dB Output impedance：50Ω Load impedance： more than 10kΩ
RMS detection circuit	True RMS detection circuit(digital computing type)
Processing	Digital
Pause	Normal temporary pause function, as well as the function of canceling the data before pausing the measurement, are available.
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	Four 1.5V Alkaline cells IEC type LR6, Optional AC adapter Battery life(continuous time):Alkaline dry cell ; Approx.9hours when Switch on a back light ;Approx.1/3 Consumption ampere:150mA (6V input) when processing function is OFF
Operating temperature	Temperature：-10-～50℃ Humidity：30%～90%RH(no condensation)
Size	85(W) x 328(H) x 48(D)
Weight	Less than APPROX 450g(including Batteries)