These sound level meters were designed with an emphasis on “measuring while listening to sound” in addition to the original features of measurement and calculation. By adding various options, the LA-3000 can be upgraded to an analyzer, a recorder, and a comparator, performing more than just a sound level meter.
You can check the proper recording of data and the condition of the object via headphones, and see the analysis waveform on the large easy-to-see screen in order to carry out reliable measurement confidently at a site that does not permit any failure.
Measurement, recording, analysis, and checking can be performed by a single item of equipment, thereby improving the measurement efficiency substantially.
For more detailed analysis, analysis software made by Ono Sokki is useful such as waveform analysis, sound quality evaluation, or fluctuation sound analysis.
LA-3570 Class 1 (high sensitivity type)
Suitable for measuring small sounds in a sound insulating box or similar environment etc.
LA-3560 Class 1 (wide band type)
Suitable for making measurements across the entire audible range
LA-3260 Class 2
Suitable for measuring environmental noise up to 8 kHz
Features
3.5-inch large easy-to-see screen
Direct keys for easy operation
Wide linearity range of 110 dB, no need of range switching
Quad-channel screen (Up to four different sound level calculation results can be displayed simultaneously.)
Enables to measure while listening, and record the sound under measurement
Adding options can upgrade the models into higher performance device to serve as an analyzer, a recorder, and a sound comparator. Measurement, recording, analysis and judgment all with the same device
Conforms to IEC 61672-1, JIS C1509-1
Specification
LA-3570
LA-3560
LA-3260
Applying standard
IEC 61672-1: 2002 Class 1
JIS C 1509-1: 2005 Class 1
IEC 61672-1: 2002 Class 2
JIS C 1509-1: 2005 Class 2
Measurement range (IEC, JIS)
A:22 to 130 dB
C:28 to 130 dB
Z:36 to 130 dB
A:27 to 140 dB
C:32 to 140 dB
Z:38 to 140 dB
A:26 to 140 dB
C:30 to 140 dB
Z:36 to 140 dB
Intrinsic noise
A:14 dB or less
C:20 dB or less
Z:28 dB or less
A:19 dB or less
C:24 dB or less
Z:30 dB or less
A:20 dB or less
C:24 dB or less
Z:30 dB or less
Frequency range (IEC, JIS)
10 Hz to 15 kHz
10 Hz to 20.0 kHz
10 Hz to 8.0 kHz
Microphone
MI-1211
1/2-inch bias type
MI-1235
1/2-inch electret type
MI-1433
1/2-inch electret type
Sensitivity level
(re. 1 V/Pa)
-20 dB ± 1.5 dB
-29 dB ± 3 dB
-29 dB ± 3 dB
Microphone preamplifier
MI-3310
MI-3230
Linearity range
Wide range: 110 dB / Normal range: 80
dB
Level range
7 ranges
20 to120 dB / 50 to 120 dB / 40 to 110 dB / 30 to 100 dB / 20 to 90 dB / 10 to 80
dB / 0 to 70 dB
7 ranges
30 to 130 dB / 60 to 130
dB / 50 to 120 dB / 40 to 110 dB/
30 to 100 dB / 20 to 90 dB / 10 to 80 dB
Reference range
50 to 120 dB
Time weighting
F(fast)
, S(slow), I(impluse), 10 ms
Frequency weighting
A,C and Z
Meaasurement items
Lp, Leq,
LE, Lpeak, Lmax, Lmin,
LN (LH1, L5, L10, L50, L90,
L95, LLO, LAV and two more any LN data)
Sampling interval
15.6 μs (Lp, Leq,
LE, Lmax, Lmin, Lpeak), 100 ms (LN)
Neasurement (calculation) time
Manual (0 sec), user-specified setup: 0.1 to 199 hr. 59 min. 59.9 sec.
Resolution:0.1sec
Total time
0 sec. to 199 hr. 59 min. 59.9 sec. resolution: 1sec
Interval time
1 min to 24 hr. resolution: 1 min
Start mode
Manual start, timer start, count down start, level start, external control (shunts the external control terminal)
Dual mode function
Provided as standard (simultaneous measurement of 2 kinds selected from 3 conditions of frequency weighting x 4 conditions of time weighting)
Quad mode function
Provided as standard (simultaneous measurement of 4 kinds selected from 3 conditions of frequency weighting x 4 conditions of time weighting)
Display device
3.5” LCD with white backlight
Digital display
4-digit / resolution 0.1 dB / updated every 1s
Bar indicator
Wide range: 100 dB of display range / Normal range: 70 dB of display range
Remaining battery level display
4-step display
Memory function
Stored in an SD/SDHC card (SDHC card: up to 32 GB is available)
Mode
MANUAL, AUTO (instantaneous value, calculated value), RECORD (WAVE file, 64 kHz sampling…required for the LA-0354), LOGG10, LOGG100
Actual sound or recorded sound (playback sound)
*Selected 1 band of actual sound or recorded sound (playback sound) by 1/1 or 1/3 filter mode when the option (LA-0351/0352) is installed.
Maximum output: 10mW (63Ω :at 1kHz) connector:stereo3.5Φ
AC Output
Outputs one of A, C, or Z interlocked with the main display, update interval: 15.6 μs
AC Output level
Output level: 0.707 Vrms ±5% (normal range), 2.234 Vrms ±5% (wide range)
Output impedance 50 Ω±2%, load resistance 10 kΩ or more, offset voltage ±10mV or less
Output level: 0.707 Vrms ±5% (normal range), 2.234 Vrms ±5% (wide range)
Output impedance 50 Ω±2%, load resistance 10 kΩ or more, offset voltage ±10mV or less
Through
output level
0.707 Vrms ±5% (normal range, wide range)
Output impedance 50 Ω±2%, load resistance 10 kΩ or more, offset voltage ±10mV or less
Comparator output
Outputs the status in open collector signal after comparing the setup value with the calculated value.(required for the LA-0355)
External control input
Operation: Reset and start
Control voltage: non-voltage contact input
Input pulse width: 200 ms or more
Absolute max. input voltage: 24.0V
Interlocking on/off function with an external power supply
The main unit is activated automatically when the power is supplied from an AC adapter. (required for the LA-0357)
*When this function is installed, the LA-3000 series does not operate on battery power.
Compliant with USB storage class specification ver.1.1,
USB connection cable :USB (A) male-USB(mini-B 5-pin) male (sold separately)
External memory
SD/SDHC memory card (SDHC card: up to 32 GB is available)
Microphone extension*1
103 m (CE marking compliant: up to 30 m)
Power supply
Type AA battery (alkaline battery cell or rechargeable battery cell) x 4 pieces or AC adapter (PB-7090 power consumption: approx. 7 VA when at 100VAC )
AC adapter (PB-7090), signal cable (AX-501), windscreen (Φ70 mm), hand strap, alkaline type AA battery x 4 pieces, carrying case (including shoulder belt), SD memory card (1 GB), instruction manual
Please use a recommended SD card when you use an optional function. For more details about the recommended SD card, please contact your nearest distributor or send an e-mail (overseas@onosokki.co.jp) to us.
*1.The described value is extendable length when the exclusive cable is used.
*2. It depends on the using status such as operation mode, memory mode, and backlight.
● Filter 1/1, Filter 1/3 mode
<The use of headphones helps to perform sound source probing of a specific sound, such as an unusual noise.>
In Filter1 mode, you can make level evaluations in a single frequency band. By focusing solely on a particular frequency band in which a specific unusual noise occurs and measuring the sound pressure level, you can find where the noise is coming from (sound source probing). While wearing the headphones, you can listen to the sounds only in the frequency band you selected. At this time, switchover to level display or trend display is also possible.
● RTA 1/1, RTA 1/3 mode
<Useful for evaluating frequency components when there is abnormal noise.>
By dividing a sound in terms of pitch (into frequency bands), this feature helps to analyze in which pitch (frequency band) characteristic features has, as well as for making detailed comparisons.
Filter 1/1 mode
RTA 1/1 mode
RTA 1/3 mode
Specification
Applying standard
IEC 61260: 1995 Class1
JIS C1513: 2002 Class1
JIS C1514: 2002 Class1
16 Hz to 16 kHz 11 bands (1/1 octave)
12.5 Hz to 20 kHz 33 bands (1/3 octave)
Measurement items
●Octave filter analysis mode: Lp, Leq, LE, Lmax, Lmin, LN of a selected band filter and AP
●Real-time octave analysis mode: Lp, Leq, LE, Lmax, Lmin, LN of a selected band filter and AP1, AP2,
NC value (1/1 octave only, displayed on RTA screen)
Specifying the frequency weighting
and time weighting
●Octave filter analysis mode: each for BP (band-pass) and AP (all-pass)
●Real-time octave analysis mode: each for AP1+its each frequency band, and AP2.
Display format
●Octave filter analysis mode: numerical value (BP, AP), list
●Real-time octave analysis mode: bar graph (values for a selected band, AP1 and AP2 are included in the frequency axis), list
Overwriting display function
“Stored data” and “Measurement-in-progress data”
(real-time octave analysis mode only)
LA-0353 FFT Analysis Function
Overview
<Suitable for analyzing a single-shot sound>
Adding the FFT analysis function makes it possible to perform narrow-band analysis, not only with the magnitude of sound but also with its pitch (frequency).
An averaging function is effective for analysis of stationary sound by making waveforms stable. Moreover, the use of a trigger function makes it possible to capture single-shot sounds. A window function serves as a rectangular window function automatically when a trigger is set, thereby making it easy for the user to make measurements in a user-transparent manner. By virtue of 64 kHz sampling, 25 kHz wide range analysis is also possible. Pressing the DISP key displays peak list.
Specification
The number of analysis lines
400 lines
X-axis enlargement function
x1, x2, x4
Frequency range
1 kHz, 2.5 kHz, 5 kHz, 12.5 kHz, 25 kHz
Search function
Provided high-speed movement search cursor function
Calculation items
Instantaneous value, power averaging
Waveform averaging function
SUM (power summation averaging),
MAX hold, EXP
Trigger type
Internal trigger (mode: repeat)
Trigger target
LP (instantaneous) value with the following conditions; Frequency weighting: Set on the main screen
Time weighting :10 ms fixed
Trigger position
Fixed 64 pre-trigger points
Window function
Hanning / rectangular (Trigger off: hanning / trigger on: rectangular)
Display (frequency axis)
Trigger off: each frequency band, OA and
AP (AVE off: Lp / AVE on*: Leq or Lmax)
Trigger on: each frequency band, OA, AP(Lp)
Peak list: Top 10 points
*depending on the setting of AVE on mode
Memory mode
Manual
LA-0354 Sound Recording Function
Overview
<This function can make on-site recording to an SDHC card, and also enables to check those recordings on the sound level meter.>
It becomes possible to record any unusual sounds that you may hear on site into an SD/SDHC card in WAVE format. And since you can play back those recordings on the sound level meter, you can check that recordings have been made without fail on site.
You can also save trend data at the same time by allowing the playback of long-duration data recordings. With instantaneous display of this data at the time of reproduction, you can quickly find a large sound and start playing back from that point in time.
*The OS-2000 series (option) is useful for off-line analysis of recorded sound data.
Specification
Stored data
Non-compressed (WAVE format) audio data
Frequency range
AP / specified band (in filter mode only)
File format
WAVE
Frequency weighting
Z-weighting
Sampling
64 kHz
The number of audio data bits
16 bit
Reference Lp data
Type: Lp values of non-compressed audio data
File format: CSV
Sampling: 1 second
Simultaneous storing
Enables simultaneous storing with the auto memory function (with some restriction on settings).
Storage media
SD/SDHC card, up to 32 GB of memory (The maximum file size is 2 GB)
*Up to 4 hours of recording is possible with 2 GB in 16-bit format.
Recording mode
Start-activated recording
Recording starts/stops in step with measurement. A single file is created for the duration of total measurement time. (Unless otherwise specified, same as measurement time.)
Threshold- activated recording
A recording takes place only for a length of time during which a sound level exceeds a threshold. Every time it exceeds a threshold, a single file is newly created.
Pre-recording function
Recording begins one second before the start of each recording operation.(This function is operative in level-start or threshold-activated recording mode.)
Playback function
Outputs trend data updated every second
Phone output
LA-0355Comparator Function
Overview
<Possible to make OK/NG judgment on products>
To allow creation of a system with other equipment on a production line, you can make settings for hold time and delay time of output signal.
Specification
Available item
Lp, Leq, LE, Lmax, Lpeak
Judgment hold time
0.1 s, 0.2 s, 0.5 s, 1 s, 5 s, 10 s, 30 s, manual
Delay time setting
OFF, 10
ms, 100 ms, 1 s, 2 s, 3 s, 5 s, 10 s
Output
Open collector output (OFF / positive logic / negative logic)
LA-0356Data Logging Function
Overview
<Enables to store instantaneous values in CSV format at short time intervals.>
Instantaneous values can be stored into an SD/SDHC card in CSV format.
Specification
Storing interval
10 ms, 100
ms
Available item
Lp (instantaneous value)
Simultaneous storing
Enables simultaneous storing with the auto memory function. (with some restriction on settings)
LA-0357Interlocking on/off function with an external power supply
Overview
<Interlocking on/off function with an external power supply>
A power supply on/off of the sound level meter is interlocked with a main power supply of production lines. Combined use with the comparator function is useful to build devices for OK/NG judgment in production lines.
Specification
When power is supplied from an AC adapter, a main unit of the sound level meter starts up automatically. When a power is shut off, a main unit of the sound level meter turns off. A power switch on the main unit remains operative. *When this function is installed, the sound level meter does not operate on battery power.
LA-0358Loudness Calculation Function <Coming soon>
Overview
<Evaluations based on sound characteristics and auditory sense>
As for noise level evaluations, there are cases when measurement results are not in tune with the auditory sense of the human ear. In such cases, evaluation using loudness values, which is one of the indexes of sound quality evaluation, becomes a highly effective tool. Loudness calculation is an index used for evaluating the sound quantity of human perception in accordance with DIN 45631*. (The LA-0358 loudness calculation function is designed to work on stationary sounds. The OS-2000 series is useful for the Loudness calculation of the non-stationary loudness.)
Applicable model: LA-3560, LA-3570
*DIN = Deutsches Institut fur Normung/ DIN 45631=DIN standard for calculation of loudness
The SC-3120/2120A is a sound calibrator conforming to JIS C 1515:2004, indispensable for determining a reference measurement for the sound level meter.
The SC-3120 is Class 1/C piston phone type, outputs sound pressure at 250 Hz, 114 dB. (for the LA-3000 series)
The SC-2120A is Class 2 speaker type, outputs sound pressure at 1 kHz, 94 dB.
SC-3120
SC-2120A
AG-3400 series Extension cable for microphone (compliant to CE marking)
Overview
Extension cable between a microphone section and a main unit of the sound level meter.
A cable for AC/DC signal output, comparator output, and external control signal input. Used for connection to an FFT analyzer, a data recorder, a PC or a PLC. (2 m)
LA-0203C Tripod for the sound level meter
Overview
This is Ono Sokki’s standard tripod for use with our sound level meter. The maximum height is 161.5 cm and minimum height can be reduced to less than 10 cm by reversing the tripod and attaching the center pole to the sound level meter. (SPLINT PROⅡ GM made by SLIK Corporation)
PB-7090 AC Adapter
Overview
Input voltage: 100 to 240 VAC, 50 / 60 Hz Output voltage: 5.9 VDC
Output connector: EIAJ RC-5320A (DC3.15V to 6.3V) Rated output current: 3.5 A Total length: 3.5 m
*Please specify the input voltage of the AC adapter
depending on your usage.
DPU-414 RS-232C Thermal printer
Overview
Interface printer with RS-232C connector. Enables manual printing, auto printing and memory printing are possible.
Connection cable (AX-5042) between the LA-3000 series and
the printer is provided as standard accessory.
Options (sold separately)
· AC adapter PW-4007J(100-120 VAC) or PW-4007E (220-240 VAC)
· Recording paper CX-050B (30m/roll, 10 rolls/box)
●Waveform Analysis
By reading in a WAVE file, you can perform various off-line analyses. By using an IIR filter (option), you can listen to the sound coming out of the filter while playing back a recorded sound.
●Sound Quality Evaluation
The result of non-stationary loudness analysis can be displayed in various kinds of graphs including color map. It is possible to analyze even more complicated sound quality analysis such as sharpness, roughness etc.
●Fluctuation Sound Analysis
This analysis method can detect a low level time fluctuating sound (such as rattling sound), which is difficult to detect by FFT analysis. The two axes (an axis of sound timbre and variable period axis) make it possible to display the time fluctuating component clearly.
●FFT, 1/N octave analysis software
By reading in WAVE data derived from the LA-3000 series, FFT analysis, 1/N octave analysis and similar analysis can be performed on-line. For example, a non-stationary signal can be analyzed in detail in 2-axis (time and frequency) color map.
●As a signal source to the DS-3000
Real-time analysis can be performed by using analog output from the LA-3000 series in place of a microphone. Since the LA-3000 series can output two kind of signals (A-weighting and Z-weighting) simultaneously, both signals can be analyzed at the same time by the DS-3000 series.
