Sound Level Meter TYPE 6236-6238

Sound Level Meter TYPE 6236/6238

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/TYPE 6238 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.

Function Enhancement　－Program card (SD card)－

Replacing the card with SD card enables to add the specified analyzing function to TYPE 6236/TYPE 6238.

1/1 and 1/3-octave Real-time analysis card
FTT analysis Card *option
RSR card (Real Sound Recording Card) *option

Equipped with a function of displaying NC bar graph with evaluated NC index

In response to your great deal of needs, the function of displaying NC-bar with evaluated NC index finally equipped!!
By inserting “1/1 and 1/3-octave Real-time Analysis Card” in TYPE 6236/TYPE 6238, evaluated NC index is displayed in real time, empowering the evaluation of on-site noise measurement.

Embedded high precision microphone

TYPE 6236/TYPE 6238 is equipped with high precision electret condenser microphone(TYPE 7052NR/TYPE 7146NR) which ACO is most proud of.
The measurement frequency range covers entire audible frequencies,TYPE6236:20Hz～20kHz,TYPE6238:10Hz～20kHz.

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.

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Sound Level Meter TYPE 6236/6238

Type	TYPE 6236	TYPE 6238
Type approval number	TS201	TF202
Name	Sound Level Meter	Precision Sound Level Meter
Applicable Standards	JIS C1509-1：2017 ClassⅡ JIS C1516：2014 ClassⅡ IEC61672-1：2013 Class Ⅱ	JIS C1509-1：2017 ClassⅠ JIS C1516：2014 ClassⅠ IEC61672-1：2013 Class Ⅰ
Frequency Range	20Hz～20kHz (Conforms with measurement law 20Hz～8kHz)	10Hz～20kHz (Conforms with measurement law 20Hz～16kHz)
Microphone Type	TYPE 7052NR：Stand-alone TYPE 7052	TYPE 7146NR：Stand-alone TYPE 7146
（Sensitivity）	(-33dB：Stand-alone -31dB)	(-29dB：Stand-alone -27dB)
Measurement Level	A:28～130dB C:37～130dB Z(FLAT):39～130dB C peak:55～141dB Z(FLAT)peak:60～141dB	A:28～130dB C:37～130dB Z(FLAT):39～130dB 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.	The lower limit of the measurement range in dB lies 8dB higher than self-noise level.
Level Range Control	10dB 6step 20～80dB、20～90dB、20～100dB 20～110dB、30～120dB、40～130dB
Linearity Range	100dB
Time weighting	Fast、Slow、Impulse
Frequency weighting	A、C、Z(FLAT)
Measurement items	Sound pressure level(Lp) A-weighted sound pressure level(LA) C-weighted sound pressure level(LC) Equivalent continuous A-weighted sound pressure level(LAeq) Sound Exposure level(LAE) Maximum sound pressure level(LAmax) Minimum sound pressure level(LAmin) Percentile sound pressure level(5 freely selectable values、LAN) Peak Sound Pressure level(Lpeak) C- weighted Peak Sound Pressure level(LCpeak) Power average of maximum sound pressure level in a given interval(LAtm5) Impulse Sound pressure level(LAI) Impulse equivalent continuous sound pressure level(LAIeq)
Measurement time	1s/3s/5s/10s/1min/5min/10min/15min/30min/1h/8h/12h/24h Manual(Max. 199h59m59s)
Sampling Time	20.8μs(Leq、Lmax、Lmin)、100ms(LN)
Data clear Function	Pause, and a function that deletes preceding 3 or 5 sec. 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
Pause	Normal pause function, as well as the function of canceling the data before pausing the measurement, are available.
Calibration signal	Electric calibration with internal oscillator (1kHz sine 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)

【1/1 and 1/3-octave Real-time Analysis Card】

Applicable Standards	JIS C 1514（IEC61260):classI
Measurement mode	Sound pressure level(Lp) Equivalent continuous sound pressure level(Leq) Sound exposure level(LE) Maximum sound pressure level(Lmax) (One of the measurement modes selected as above is displayed.)
Frequency analysis band	1/1-octave filter: 16Hz,31.5Hz,63Hz,125Hz,250 Hz,500Hz,1kHz,2kHz, 4kHz,8kHz,AP,OA 1/3-octave filter: 12.5Hz,16Hz,20Hz,25Hz,31.5Hz,40Hz,50Hz,63Hz,80Hz, 100Hz,125Hz,160Hz,200Hz,250Hz,315Hz,400Hz,500Hz, 630Hz,800Hz,1kHz,1.25kHz,1.6kHz,2kHz,2.5kHz,3.15kHz, 4kHz,5kHz,6.3kHz,8kHz,10kHz,12.5kHz,16kHz,AP,OA
Level Range Control	10dB 6step 10～80dB、20～90dB、30～100dB 40～110dB、50～120dB、60～130dB

* Specification and content are subjected to change without notice.