Type |
TYPE 6236 |
TYPE 6238 |
Type approval number |
SLS101 |
SLF101 |
Name |
Sound Level Meter |
Precision Sound Level Meter |
Applicable Standards |
JIS C1509-1:2005 ClassⅡ
IEC 61672-1:2002 ClassⅡ |
JIS C1509-1:2005 classI
IEC 61672-1:2002 ClassI |
Frequency Range |
20Hz~20kHz
(Conforms with
measurement law
20Hz~8kHz) |
5Hz~20kHz
(Conforms with
measurement law
20Hz~12.5kHz) |
Microphone Type
(Sensitivity) |
TYPE 7052NR
(-33dB,Stand-alone -31dB) |
TYPE 7146NR
(-29dB,Stand-alone -27dB) |
Measurement Level |
A:28~130dB
(0~80dB/0-dB function in ON)
C:36~130dB
Z(FLAT):40~130dB
C peak:55~141dB
Z(FLAT)peak:60~141dB |
A:28~130dB
(0~80dB/0-dB function in ON)
C:37~130dB
Z(FLAT):39~130dB
C peak:55~135dB
Z(FLAT)peak:60~135dB |
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
(0~80dB/0-dB function in ON) |
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) |