Basic Specifications

LA-1410 LA-1440 LA-4440

Sound Level Meter

IEC 61672-1 :2002 Class 2 IEC 61672-1 :2002 Class 1
Applying standards
JIS C 1509-1 :2005 Class 2 JIS C 1509-1 :2005 Class 1
1/2-inch back electret-type condenser type 1/2-inch back electret-type condenser type
Microphone
MI-1432 Nominal sensitivity level: −29dB MI-1234 Nominal sensitivity level: −29dB

Class 2 / Class 1
Preamplifier MI-3111
Linearity range 100 dB
Frequency range 10Hz to 8kHz (JIS, IEC) 10Hz to 20kHz (JIS, IEC)
A : 26 to 137dB (JIS, IEC) A : 27 to 137dB (JIS, IEC)
Measurement range C : 31 to 137dB (JIS, IEC) C : 30 to 137dB (JIS, IEC)
Z : 36 to 137dB (JIS, IEC) Z : 35 to 137dB (JIS, IEC)
Frequency weighting A, C, Z

LA-1410/1440/4440
A: 19dB or less, C: 22dB or less,
Intrinsic noise A: 20dB or less, C: 25dB or less, Z: 30dB or less
Z: 27dB or less
Level range 20 to 90dB, 30 to 90dB, 40 to 100dB, 50 to 110dB, 60 to 120dB, 70 to 130dB (Normal range) / 40 to 120dB (Wide range)
Time weighting Fast, Slow Fast, Slow, Impulse, 10ms
Measurement items Lp, Leq, LE, LN (L₅, L₁₀, L₅₀, L₉₀, L₉₅, Hi, Low, Ave), Lmax, Lmin, Lpeak
Sampling interval 31.25μs (other than LN), 100ms (LN) 20.8μs (other than LN), 100ms (LN)
Measurement time Manual, arbitrary setup (199h59m59s max.)
Total measurement time ̶ Arbitrary setup (199h59m59s max.)
Manual, Timer (time setting: in increment of 1 second)
Start mode Manual Trigger (Can be started after a lapse of specified time ( 0 to 10 seconds, in increment of 1 second)
after trigger detection: Trigger delay function)
Calibration Electrical calibration by internal calibration signal (1kHz sine wave), calibration by external sound calibrator

Achieved the ease of use and

Recommended sound calibrator SC-3120
Semitransparent LCD with LED backlight (124 x 64-dot), measurement value display by numeric and bar indicator.
Display device List display and trend graph display for various kinds of calculated values,
displays of day, time, measurement time and conditions of various kinds of instruments.
Displayed update time

Memory
Manual memory
Auto memory ̶
Numeric: 1s, bar indicator : 0.1s, trend graph: 0.2s
Total calculated values: 100 addresses
Total calculated values: 100 addresses x 200 blocks, Leq: 1000 addresses x 200 blocks
h i g h - p e r fo r m a n c e m e a s u r e m e n t
function Sound pressure level with time weighting (Lp) is automatically recorded at the specified
Lp record ̶ interval. (1000 addresses x 200 blocks)
Recording interval: Select one from 1ms, 2ms, 5ms, and 10ms.
Measurement condition memory Condition memory: 9 kinds
function Resume Settings activated at power ON can be selected from three; Settings used at previous power OFF, factory settings, any condition memory number which is set from menu
Analog output Select one from three; AC output with selected frequency weighting, AC output with Z-weighting, DC output with selected frequency weighting and time weighting
Rated AC output 0.707Vrms / F.S. (normal range), 2.238Vrms / F.S. (wide range)
Rated DC output 2.5V / F.S., 0.25V / 10 dB
Electrical specification Output impedance: 50Ω, load resistance: 10kΩ or more, applicable cable: AX-501 (sold separately)
Operation: Toggle operation of start / place in pause.
Hardware specification: Negative logic pulse input (Voltage level: Low 0.0 to 0.5V, Hi 3.0 to 5.0V)
External control input ̶ Pulse width: 100ms or more
Absolute maximum rated input voltage: 5.0V
Comparison level: Set to 40.0 to 130.0dB (in increment of 0.1dB)
Comparison measurement item: Lmax or Lpeak
Comparator function Delay time: 0ms,100ms,1s, 5s
̶ Hold time: 100ms, 1s, 5s, manual
(LA-0141:option) Output logic: Negative or positive logic
Output signal specification: Open collector
(Applied voltage: +3 to +24VDC, current: 50mA or less)
Clock function Current calendar year / month / day / hour and minute can be displayed and set, with leap year adjustment
Control of main unit and data output, output to an exclusive printer (DPU-414:sold separately)
RS-232C ̶
Baud rate: 9,600 / 115,200 bps
Control of main unit and data output, output to an exclusive printer (BL-112ⅡUⅠ:sold separately)
USB ̶
USB2.0 FULL SPEED (connect to virtual COM port)
Microphone extension*¹ 305m max. 105m max.
Menu: Measurement value, start / stop time of measurement, actual measurement time,
frequency weighting, time weighting
Print function ̶
Mode: Normal (alpha-numeral) or image data displyed on LCD
Applicable printer: DPU-414 / BL-112ⅡUⅠ (sold separately)
Power supply Type AA battery x 2pcs. or AC adapter (PB-7090, sold separately, power consumption: approx. 4VA at 100VAC)
Battery life Approx. 8 hours (LR-6 alkaline batteries in used )
Operating temperature / humidity range −10 to 50ºC / 25 to 90%RH (with no condensation)
Storage temperature / humidity range −20 to 60ºC / 10 to 90%RH (with no condensation)
Outer dimensions Approx. 78(W) x 263(H) x 47(D)mm
Weight Approx. 375g (including batteries)
Windscreen (ø70mm) x 1, carrying case x 1, hand strap x 1, battery cell x 2pcs.,
Accessories Manual: 1 copy for each (Basic Operation, Interface (LA-1440 / 4440), Technical Guidance, Simple Operation Guide)
*1. The cable length given here is the length when each of the exclusive cable sold by Ono Sokki is used.

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LA-1410 LA-1440 LA-4440

(Class 2) (Class 2) (Class 1)
WORLDWIDE ONO SOKKI CO., LTD.
1-16-1 Hakusan, Midori-ku, Yokohama, 226-8507, Japan
Phone : +81-45-935-3918 Fax : +81-45-930-1808
* Outer appearance and specifications are subject to change without prior notice.
URL: https://www.onosokki.co.jp/English/english.htm
E-mail : overseas@onosokki.co.jp

U.S.A. THAILAND INDIA P.R.CHINA

Ono Sokki Technology Inc. Ono Sokki（Thailand）Co., Ltd. Ono Sokki India Private Ltd. Ono Sokki Shanghai Technology Co., Ltd.
2171 Executive Drive, Suite 400 1/293-4 Moo.9 T.Bangphud A.Pakkred, Plot No.20, Ground Floor, Sector-3, Room 506, No.47 Zhengyi Road, Yangpu
Addison, IL. 60101, U.S.A. Nonthaburi 11120, Thailand IMT Manesar Gurgaon - 122050, District, Shanghai, 200433, P.R.C.
Phone : +1-630-627-9700 Phone : +66-2-584-6735 Haryana, INDIA Phone : +86-21-6503-2656
Fax : +1-630-627-0004 Fax : +66-2-584-6740 Phone : +91-124-421-1807 Fax : +86-21-6506-0327
E-mail : info@onosokki.net E-mail : sales@onosokki.co.th Fax : +91-124-421-1809 E-mail : admin@shonosokki.com
http://www.onosokki.net E-mail : osid@onosokki.co.in

CAT. NO. 1624-09E Printed in Japan 165 (LI) 0.5K

Sound Level Meter Class1
LA-4440 Class2
LA-1410/1440
LA-1400 / 4400 Series provides full of support for on-site measurement with versatile functions. Peripherals
LA-1400 / 4400 series Class1/Class2 Sound Level Meters conform to the requirements by the latest standard of IEC / JIS. And also they are designed
to focus on field measurement in pursuing of easy operation and cost-effectiveness. All models can measure 14 items simultaneously including Leq, All-weather sold separately Windscreen Standard accessory Sound sold separately
which is popularly used in sound measurement, and have a wide linearity range of 100dB.
Windscreen Calibrator
Setting can be made with easy-to-follow menu. Depending on applications including work environment measurement, machine and product noise
LA-0207+LA-0208 SC-3120 / 2120A
analyses, you can choose suitable model which meets your needs. ●Windscreen (ø70mm)
In measurement where the microphone The SC-3120 /
is exposed to the wind, the windscreen 2120A are sound
Easy-to-follow setting menu without referring to the manual
must be used for protection. calibrators conforming
Analog output connector
Each model can be operated with easy-to-follow
This screen reduces noise caused by Sound Level sold separately to JIS C1515: 2004,
setting menu, with just [+] and [ENTER] keys.
the wind in performing sound level
measurement outdoors, and prevents Meter Tripod indispensable for
determining the reference measurement for a
Analog signal output can be Simply classified hierarchic structure leads the microphone from being damaged by rain LA-0203C sound level meter.
selected from AC (conjunction to complete each setting by selecting menu or snow. The SC-3120 is Class1/C piston phone-type,
with selected frequency
items. Detailed settings including measurement Sound Level Meter Tripod outputs sound pressure at 250Hz and 114dB,
weighting), AC-Z (fixed to
Z-weighting), or DC conditions and selection of output signals can be Screen diameter: ø200mm (made by SLIK corporation) and recommended sound calibrator for LA-1410
(conjunction with selected made even though you do not have manual with you. ＊ AG-2000 series extension cable and tripod are necessary for attachment. / 1440 / 4440.
frequency weighting and time ＊ Applying standard : IEC 61672-1:2002 The SC-2120A is Class2 speaker-type sound
weighting). JIS C 1509-1:2005 calibrator used for 1kHz and 94dB output.
Microphone can be used away from main unit by BNC cable

Exclusive coaxial cable is selected as an extension cable between microphone and

main unit. Using coaxial cable enables
Extension cable sold separately
Signal output cable (2 m) sold separately
COMP / CTRL connector
measurement of extension and the AG-2000 series (coaxial type) AG-2010 10 m
AX-501
(LA-1440 / 4440)
measurement place easier with small-type AG-2030 30 m
code reel. Even 100m extension AG-2050 50 m with code reel
Output the comparison result measurement can be performed without AG-2100 100 m with code reel φ2.5 mini plug
of sound level using annoyance of heavy multicore cable.
comparator function (option). ＊ MI-0301 Microphone holder is a standard accessory of each extension cable. Cable for AC / DC signal output, comparator
External input of control signal ＊ Conjunction cable (5m) is attached to an extension cable with code reel for connection to a main unit of a sound level meter.
Extension cable output, and external control signal input.
to start or pause ＊ Microphone can be used away from main unit of sound level meter by connecting several extension cables.
measurement.
Displaying sound AG-2000 series ＊ CE marking: 30m or less
Recording/analyzing
pressure level with with Z-weighting
A-weighting, AC output
with Z-weighting Printer sold separately RS-232C cable (2 m) sold separately
AX-5022
USB / RS-232C connectors
(LA-1440 / 4440)
Not only the measurement of level Thermal Printer Thermal Printer
in the field, but also recording data with RS-232C connector with USB connector
(time waveform) is required in Measuring with A-weighting
DPU-414 BL-112ⅡUI (from SANEI Electric Inc.)
USB and RS-232C interfaces order to analyze noise and sound Measuring the noise at LAeq by sound level meter and
for communication with external in details.In the past sound level recording with flat Z-weighting by FFT Analyzer.
devices are equipped. PC side（D-SUB 9-pin）
measurement, it needed troublesome
Communication with a PC
enables to control and save procedure to measure the A-weighted sound pressure level and record
data. The measurement result the Z-weighted sound pressure level at the same time. Sound level had to
Interface printer with RS-232C connector.
can be printed out to an
exclusive printer.
be measured by sound level meter without frequency weighting, and then
calculated and recorded at the same time by analyzer. This way required
Manual printing, auto printing, and memory Interface printer with USB connector. AC adapter sold separately

expensive instruments. LA-1400 / 4440 series enable to output signal with flat
printing are possible. By connecting the printer to a sound level PB-7090
Connection cable (AX-5042:2 m) between meter, manual printing, auto printing, and
Z-weighting from analog output connector during displaying and measuring LA-1440 / 4440 and DPU-414 is provided as memory printing are possible.
sound level with A-weighting in main unit. ＊ Please specify the AC cord depending on the area
standard accessory. Hard copy of display screen can be performed used.
AC adapter＊ : PW-4007J (100 to 120VAC) or by connecting with LA-1440 / 4440. ＊ Made by Adapter Technology Co.,Ltd
PW-4007E (220 to 240VAC) (sold
*AC adapter (PB-7090)：Sold separately separately)
Recommended cable for USB (manufactured by
Input voltage ：100 to 240VAC, 50 / 60Hz
Auto memory function and LP recording function (LA-1440 / 4440) Recording paper : CX-050B (30m/roll, 10 rolls/box,
ELECOM CO., LTD)
Output voltage ：5.9VDC
sold separately) Output connector：EIAJ RC-5320A Voltage category2
USB-MAEA03 : mini A (male) = A (female)
The LA-1440 / 4440 have Auto memory Rated output current：3.5A
USB-FS3 : A (male) = B (male)
All models with Equivalent Continuous Sound Pressure function which automatically store the
＊ The adapter type to connect to DPU-414 is decided Length ：3.5 m
according to its production time. Please check the
Level (Leq) measurement function data to the specified measurement time. back sticker“TYPE No.”of the DPU-414.
＊ Please contact SANEI Electric Inc. for more details.

Also the sound level with time weighting

All models of LA-1400 / 4400 series can measure 14 measurement (Lp) is stored at 1ms interval (Lp recording
items including Equivalent Continuous Sound Pressure Level (Leq),
which is widely used as an indicator at present sound measurement.
function) . This function enables to check Outer Dimensions Sound Level Meter Function Table
the fluctuation of sound level in short time. Displays level on vertical axis, time
Unit: mm
●：Provided as a standard ○：Provided as an option
＊Storing interval can be selected from 1ms, 2ms, 5ms on horizontal axis.
LA-1410/1440/4440
Multiple simultaneous measurements or 10ms. Maximum of 200 seconds can be stored at Linearity range 100ｄB
1ms interval. Continuous measurement
Reference point Manual memory
［Auto memory/Block memory］
LA-1400 / 4400 series can calculate all of 14 measurement items
Class 2（20 Hz to 8 kHz） ̶ ̶
simultaneously. No need by selecting measurement item to calculate before
Resume function to activate with same settings as last time Long distance extension［BNC type］ LA-1410 LA-1440

78
measurement, no error by miss-setting. Only one pressing of START button ̶ ̶
Class 1（20 Hz to 12.5 kHz）
is required to start measurement. All results of measurement items can be ̶
Same as existing LA series, measurement conditions just before being Long distance extension［BNC type］wide band LA-4440
checked with several pressings of DISP (abbreviation of DISPLAY) button 186

after measurement. powered OFF are automatically saved. Measurement can be started again 263 35 （Lp,Lmax,Leq）
General purpose ● ●
quickly with previous measurement conditions (Resume function). The （Leq, LN, LE）
Fluctuation noise ● ●
＊14 measurement items: L p , L eq , L E , L max , L min , L peak , L HI , L₅, L₁₀, L₅₀, L₉₀, L₉₅, L LO , L AVE . LA-1400 / 4440 series also have 9 condition memories and able to store Reference Working environment（Leq for 10 minutes） ● ●
incident angle
The all items can be calculated simultaneously and saved as needed. each measurement condition as required by circumstances. Presetting the of sound wave Factory noise ● ●
measurement conditions not only makes it smooth to restart measurement
47

(27.5)
Mechanical noise ● ●
but also prevents from setting error in the field. Time weighting of 10 ms ̶ ●（LA-4440 only）
Wide linearity of 100dB without adjusting level range Rear cover
(Inside of rear cover) External control RS-232C connection ̶ ●
Tripod mounting screw (1/4, depth 6) function USB（virtual COM port connection） ̶ ●
Re-measurement is not necessary for over / under-range. LA-1400 / Easy data transfer and remote controll (LA-1440 / 4440). 88.7
(JIS B 7103)
Trigger function ̶ ●
4400 series feature a wide linearity range of 100dB and can measure (required software: user preparation) Position to paste standard conformance certificate （Starting of measurement・data storage）
Battery case cover
the sound pressure level from 30 to 130dB at one range*. (type AA battery × 2pcs.) Microphone Trend display of sound data ●（Realtime data only） ●（Realtime data＋storage data）
It works effectively in the measurement of unpredictable or large Windscreen (ø70) ●（Manual memory 100 data＋
Communications via RS-232C and USB enable to transfer the Data storage into an internal memory ●（Manual memory 100 data）
Block memory max. 200,000 data）
fluctuation in sound level.
measurement result to a PC and remote controll of LA-1440 / Preamplifier Level judgment［comparator output］ ̶ ○
＊Sound pressure level from 30 to 130dB can be measured at the range of 40 to 4440 main unit with software (user preparation). External control ̶ ●
120dB. Weight: approx. 375 g (including battery cells) ̶ Calculation value 1 s /
Storage cycle of sound data
instantaneous value 1 ms or more
Sound Level Meter Class1
LA-4440 Class2
LA-1410/1440
LA-1400 / 4400 Series provides full of support for on-site measurement with versatile functions. Peripherals
LA-1400 / 4400 series Class1/Class2 Sound Level Meters conform to the requirements by the latest standard of IEC / JIS. And also they are designed
to focus on field measurement in pursuing of easy operation and cost-effectiveness. All models can measure 14 items simultaneously including Leq, All-weather sold separately Windscreen Standard accessory Sound sold separately
which is popularly used in sound measurement, and have a wide linearity range of 100dB.
Windscreen Calibrator
Setting can be made with easy-to-follow menu. Depending on applications including work environment measurement, machine and product noise
LA-0207+LA-0208 SC-3120 / 2120A
analyses, you can choose suitable model which meets your needs. ●Windscreen (ø70mm)
In measurement where the microphone The SC-3120 /
is exposed to the wind, the windscreen 2120A are sound
Easy-to-follow setting menu without referring to the manual
must be used for protection. calibrators conforming
Analog output connector
Each model can be operated with easy-to-follow
This screen reduces noise caused by Sound Level sold separately to JIS C1515: 2004,
setting menu, with just [+] and [ENTER] keys.
the wind in performing sound level
measurement outdoors, and prevents Meter Tripod indispensable for
determining the reference measurement for a
Analog signal output can be Simply classified hierarchic structure leads the microphone from being damaged by rain LA-0203C sound level meter.
selected from AC (conjunction to complete each setting by selecting menu or snow. The SC-3120 is Class1/C piston phone-type,
with selected frequency
items. Detailed settings including measurement Sound Level Meter Tripod outputs sound pressure at 250Hz and 114dB,
weighting), AC-Z (fixed to
Z-weighting), or DC conditions and selection of output signals can be Screen diameter: ø200mm (made by SLIK corporation) and recommended sound calibrator for LA-1410
(conjunction with selected made even though you do not have manual with you. ＊ AG-2000 series extension cable and tripod are necessary for attachment. / 1440 / 4440.
frequency weighting and time ＊ Applying standard : IEC 61672-1:2002 The SC-2120A is Class2 speaker-type sound
weighting). JIS C 1509-1:2005 calibrator used for 1kHz and 94dB output.
Microphone can be used away from main unit by BNC cable

Exclusive coaxial cable is selected as an extension cable between microphone and

main unit. Using coaxial cable enables
Extension cable sold separately
Signal output cable (2 m) sold separately
COMP / CTRL connector
measurement of extension and the AG-2000 series (coaxial type) AG-2010 10 m
AX-501
(LA-1440 / 4440)
measurement place easier with small-type AG-2030 30 m
code reel. Even 100m extension AG-2050 50 m with code reel
Output the comparison result measurement can be performed without AG-2100 100 m with code reel φ2.5 mini plug
of sound level using annoyance of heavy multicore cable.
comparator function (option). ＊ MI-0301 Microphone holder is a standard accessory of each extension cable. Cable for AC / DC signal output, comparator
External input of control signal ＊ Conjunction cable (5m) is attached to an extension cable with code reel for connection to a main unit of a sound level meter.
Extension cable output, and external control signal input.
to start or pause ＊ Microphone can be used away from main unit of sound level meter by connecting several extension cables.
measurement.
Displaying sound AG-2000 series ＊ CE marking: 30m or less
Recording/analyzing
pressure level with with Z-weighting
A-weighting, AC output
with Z-weighting Printer sold separately RS-232C cable (2 m) sold separately
AX-5022
USB / RS-232C connectors
(LA-1440 / 4440)
Not only the measurement of level Thermal Printer Thermal Printer
in the field, but also recording data with RS-232C connector with USB connector
(time waveform) is required in Measuring with A-weighting
DPU-414 BL-112ⅡUI (from SANEI Electric Inc.)
USB and RS-232C interfaces order to analyze noise and sound Measuring the noise at LAeq by sound level meter and
for communication with external in details.In the past sound level recording with flat Z-weighting by FFT Analyzer.
devices are equipped. PC side（D-SUB 9-pin）
measurement, it needed troublesome
Communication with a PC
enables to control and save procedure to measure the A-weighted sound pressure level and record
data. The measurement result the Z-weighted sound pressure level at the same time. Sound level had to
Interface printer with RS-232C connector.
can be printed out to an
exclusive printer.
be measured by sound level meter without frequency weighting, and then
calculated and recorded at the same time by analyzer. This way required
Manual printing, auto printing, and memory Interface printer with USB connector. AC adapter sold separately

expensive instruments. LA-1400 / 4440 series enable to output signal with flat
printing are possible. By connecting the printer to a sound level PB-7090
Connection cable (AX-5042:2 m) between meter, manual printing, auto printing, and
Z-weighting from analog output connector during displaying and measuring LA-1440 / 4440 and DPU-414 is provided as memory printing are possible.
sound level with A-weighting in main unit. ＊ Please specify the AC cord depending on the area
standard accessory. Hard copy of display screen can be performed used.
AC adapter＊ : PW-4007J (100 to 120VAC) or by connecting with LA-1440 / 4440. ＊ Made by Adapter Technology Co.,Ltd
PW-4007E (220 to 240VAC) (sold
*AC adapter (PB-7090)：Sold separately separately)
Recommended cable for USB (manufactured by
Input voltage ：100 to 240VAC, 50 / 60Hz
Auto memory function and LP recording function (LA-1440 / 4440) Recording paper : CX-050B (30m/roll, 10 rolls/box,
ELECOM CO., LTD)
Output voltage ：5.9VDC
sold separately) Output connector：EIAJ RC-5320A Voltage category2
USB-MAEA03 : mini A (male) = A (female)
The LA-1440 / 4440 have Auto memory Rated output current：3.5A
USB-FS3 : A (male) = B (male)
All models with Equivalent Continuous Sound Pressure function which automatically store the
＊ The adapter type to connect to DPU-414 is decided Length ：3.5 m
according to its production time. Please check the
Level (Leq) measurement function data to the specified measurement time. back sticker“TYPE No.”of the DPU-414.
＊ Please contact SANEI Electric Inc. for more details.

Also the sound level with time weighting

All models of LA-1400 / 4400 series can measure 14 measurement (Lp) is stored at 1ms interval (Lp recording
items including Equivalent Continuous Sound Pressure Level (Leq),
which is widely used as an indicator at present sound measurement.
function) . This function enables to check Outer Dimensions Sound Level Meter Function Table
the fluctuation of sound level in short time. Displays level on vertical axis, time
Unit: mm
●：Provided as a standard ○：Provided as an option
＊Storing interval can be selected from 1ms, 2ms, 5ms on horizontal axis.
LA-1410/1440/4440
Multiple simultaneous measurements or 10ms. Maximum of 200 seconds can be stored at Linearity range 100ｄB
1ms interval. Continuous measurement
Reference point Manual memory
［Auto memory/Block memory］
LA-1400 / 4400 series can calculate all of 14 measurement items
Class 2（20 Hz to 8 kHz） ̶ ̶
simultaneously. No need by selecting measurement item to calculate before
Resume function to activate with same settings as last time Long distance extension［BNC type］ LA-1410 LA-1440

78
measurement, no error by miss-setting. Only one pressing of START button ̶ ̶
Class 1（20 Hz to 12.5 kHz）
is required to start measurement. All results of measurement items can be ̶
Same as existing LA series, measurement conditions just before being Long distance extension［BNC type］wide band LA-4440
checked with several pressings of DISP (abbreviation of DISPLAY) button 186

after measurement. powered OFF are automatically saved. Measurement can be started again 263 35 （Lp,Lmax,Leq）
General purpose ● ●
quickly with previous measurement conditions (Resume function). The （Leq, LN, LE）
Fluctuation noise ● ●
＊14 measurement items: L p , L eq , L E , L max , L min , L peak , L HI , L₅, L₁₀, L₅₀, L₉₀, L₉₅, L LO , L AVE . LA-1400 / 4440 series also have 9 condition memories and able to store Reference Working environment（Leq for 10 minutes） ● ●
incident angle
The all items can be calculated simultaneously and saved as needed. each measurement condition as required by circumstances. Presetting the of sound wave Factory noise ● ●
measurement conditions not only makes it smooth to restart measurement
47

(27.5)
Mechanical noise ● ●
but also prevents from setting error in the field. Time weighting of 10 ms ̶ ●（LA-4440 only）
Wide linearity of 100dB without adjusting level range Rear cover
(Inside of rear cover) External control RS-232C connection ̶ ●
Tripod mounting screw (1/4, depth 6) function USB（virtual COM port connection） ̶ ●
Re-measurement is not necessary for over / under-range. LA-1400 / Easy data transfer and remote controll (LA-1440 / 4440). 88.7
(JIS B 7103)
Trigger function ̶ ●
4400 series feature a wide linearity range of 100dB and can measure (required software: user preparation) Position to paste standard conformance certificate （Starting of measurement・data storage）
Battery case cover
the sound pressure level from 30 to 130dB at one range*. (type AA battery × 2pcs.) Microphone Trend display of sound data ●（Realtime data only） ●（Realtime data＋storage data）
It works effectively in the measurement of unpredictable or large Windscreen (ø70) ●（Manual memory 100 data＋
Communications via RS-232C and USB enable to transfer the Data storage into an internal memory ●（Manual memory 100 data）
Block memory max. 200,000 data）
fluctuation in sound level.
measurement result to a PC and remote controll of LA-1440 / Preamplifier Level judgment［comparator output］ ̶ ○
＊Sound pressure level from 30 to 130dB can be measured at the range of 40 to 4440 main unit with software (user preparation). External control ̶ ●
120dB. Weight: approx. 375 g (including battery cells) ̶ Calculation value 1 s /
Storage cycle of sound data
instantaneous value 1 ms or more
 Basic Specifications
LA-1410 LA-1440 LA-4440

Sound Level Meter

IEC 61672-1 :2002 Class 2 IEC 61672-1 :2002 Class 1
Applying standards
JIS C 1509-1 :2005 Class 2 JIS C 1509-1 :2005 Class 1
1/2-inch back electret-type condenser type 1/2-inch back electret-type condenser type
Microphone
MI-1432 Nominal sensitivity level: −29dB MI-1234 Nominal sensitivity level: −29dB

Class 2 / Class 1
Preamplifier MI-3111
Linearity range 100 dB
Frequency range 10Hz to 8kHz (JIS, IEC) 10Hz to 20kHz (JIS, IEC)
A : 26 to 137dB (JIS, IEC) A : 27 to 137dB (JIS, IEC)
Measurement range C : 31 to 137dB (JIS, IEC) C : 30 to 137dB (JIS, IEC)
Z : 36 to 137dB (JIS, IEC) Z : 35 to 137dB (JIS, IEC)
Frequency weighting A, C, Z

LA-1410/1440/4440
A: 19dB or less, C: 22dB or less,
Intrinsic noise A: 20dB or less, C: 25dB or less, Z: 30dB or less
Z: 27dB or less
Level range 20 to 90dB, 30 to 90dB, 40 to 100dB, 50 to 110dB, 60 to 120dB, 70 to 130dB (Normal range) / 40 to 120dB (Wide range)
Time weighting Fast, Slow Fast, Slow, Impulse, 10ms
Measurement items Lp, Leq, LE, LN (L₅, L₁₀, L₅₀, L₉₀, L₉₅, Hi, Low, Ave), Lmax, Lmin, Lpeak
Sampling interval 31.25μs (other than LN), 100ms (LN) 20.8μs (other than LN), 100ms (LN)
Measurement time Manual, arbitrary setup (199h59m59s max.)
Total measurement time ̶ Arbitrary setup (199h59m59s max.)
Manual, Timer (time setting: in increment of 1 second)
Start mode Manual Trigger (Can be started after a lapse of specified time ( 0 to 10 seconds, in increment of 1 second)
after trigger detection: Trigger delay function)
Calibration Electrical calibration by internal calibration signal (1kHz sine wave), calibration by external sound calibrator

Achieved the ease of use and

Recommended sound calibrator SC-3120
Semitransparent LCD with LED backlight (124 x 64-dot), measurement value display by numeric and bar indicator.
Display device List display and trend graph display for various kinds of calculated values,
displays of day, time, measurement time and conditions of various kinds of instruments.
Displayed update time

Memory
Manual memory
Auto memory ̶
Numeric: 1s, bar indicator : 0.1s, trend graph: 0.2s
Total calculated values: 100 addresses
Total calculated values: 100 addresses x 200 blocks, Leq: 1000 addresses x 200 blocks
h i g h - p e r fo r m a n c e m e a s u r e m e n t
function Sound pressure level with time weighting (Lp) is automatically recorded at the specified
Lp record ̶ interval. (1000 addresses x 200 blocks)
Recording interval: Select one from 1ms, 2ms, 5ms, and 10ms.
Measurement condition memory Condition memory: 9 kinds
function Resume Settings activated at power ON can be selected from three; Settings used at previous power OFF, factory settings, any condition memory number which is set from menu
Analog output Select one from three; AC output with selected frequency weighting, AC output with Z-weighting, DC output with selected frequency weighting and time weighting
Rated AC output 0.707Vrms / F.S. (normal range), 2.238Vrms / F.S. (wide range)
Rated DC output 2.5V / F.S., 0.25V / 10 dB
Electrical specification Output impedance: 50Ω, load resistance: 10kΩ or more, applicable cable: AX-501 (sold separately)
Operation: Toggle operation of start / place in pause.
Hardware specification: Negative logic pulse input (Voltage level: Low 0.0 to 0.5V, Hi 3.0 to 5.0V)
External control input ̶ Pulse width: 100ms or more
Absolute maximum rated input voltage: 5.0V
Comparison level: Set to 40.0 to 130.0dB (in increment of 0.1dB)
Comparison measurement item: Lmax or Lpeak
Comparator function Delay time: 0ms,100ms,1s, 5s
̶ Hold time: 100ms, 1s, 5s, manual
(LA-0141:option) Output logic: Negative or positive logic
Output signal specification: Open collector
(Applied voltage: +3 to +24VDC, current: 50mA or less)
Clock function Current calendar year / month / day / hour and minute can be displayed and set, with leap year adjustment
Control of main unit and data output, output to an exclusive printer (DPU-414:sold separately)
RS-232C ̶
Baud rate: 9,600 / 115,200 bps
Control of main unit and data output, output to an exclusive printer (BL-112ⅡUⅠ:sold separately)
USB ̶
USB2.0 FULL SPEED (connect to virtual COM port)
Microphone extension*¹ 305m max. 105m max.
Menu: Measurement value, start / stop time of measurement, actual measurement time,
frequency weighting, time weighting
Print function ̶
Mode: Normal (alpha-numeral) or image data displyed on LCD
Applicable printer: DPU-414 / BL-112ⅡUⅠ (sold separately)
Power supply Type AA battery x 2pcs. or AC adapter (PB-7090, sold separately, power consumption: approx. 4VA at 100VAC)
Battery life Approx. 8 hours (LR-6 alkaline batteries in used )
Operating temperature / humidity range −10 to 50ºC / 25 to 90%RH (with no condensation)
Storage temperature / humidity range −20 to 60ºC / 10 to 90%RH (with no condensation)
Outer dimensions Approx. 78(W) x 263(H) x 47(D)mm
Weight Approx. 375g (including batteries)
Windscreen (ø70mm) x 1, carrying case x 1, hand strap x 1, battery cell x 2pcs.,
Accessories Manual: 1 copy for each (Basic Operation, Interface (LA-1440 / 4440), Technical Guidance, Simple Operation Guide)
*1. The cable length given here is the length when each of the exclusive cable sold by Ono Sokki is used.

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LA-1410 LA-1440 LA-4440

(Class 2) (Class 2) (Class 1)
WORLDWIDE ONO SOKKI CO., LTD.
1-16-1 Hakusan, Midori-ku, Yokohama, 226-8507, Japan
Phone : +81-45-935-3918 Fax : +81-45-930-1808
* Outer appearance and specifications are subject to change without prior notice.
URL: https://www.onosokki.co.jp/English/english.htm
E-mail : overseas@onosokki.co.jp

U.S.A. THAILAND INDIA P.R.CHINA

Ono Sokki Technology Inc. Ono Sokki（Thailand）Co., Ltd. Ono Sokki India Private Ltd. Ono Sokki Shanghai Technology Co., Ltd.
2171 Executive Drive, Suite 400 1/293-4 Moo.9 T.Bangphud A.Pakkred, Plot No.20, Ground Floor, Sector-3, Room 506, No.47 Zhengyi Road, Yangpu
Addison, IL. 60101, U.S.A. Nonthaburi 11120, Thailand IMT Manesar Gurgaon - 122050, District, Shanghai, 200433, P.R.C.
Phone : +1-630-627-9700 Phone : +66-2-584-6735 Haryana, INDIA Phone : +86-21-6503-2656
Fax : +1-630-627-0004 Fax : +66-2-584-6740 Phone : +91-124-421-1807 Fax : +86-21-6506-0327
E-mail : info@onosokki.net E-mail : sales@onosokki.co.th Fax : +91-124-421-1809 E-mail : admin@shonosokki.com
http://www.onosokki.net E-mail : osid@onosokki.co.in

CAT. NO. 1624-09E Printed in Japan 165 (LI) 0.5K