Kanomax 4431 User manual

Sound level meter
MODEL 4431
Instruction manual
KANOMAX JAPAN INC.

1
Components of this Instruction manual
This instruction manual refers to the functions of, and operating instructions for, Sound Level
Meter MODEL 4431 (a reviated to “this equipment” in what follows)
This instruction manual consists of following chapters.
Outline
The components, characteristics, lock diagram of this equipment are descri ed
Locations and their functions
The names and functions of keys and terminals are riefly descri ed.
Liquid crystal screen
The sym ols displayed on the screen are descri ed.
Preparation
The power supply, check efore use, installation of this equipment, connection of ca les and
various key setting are descri ed.
Measurement
Basic idea of measurement method is descri ed.
Recording
How to save or recall data is descri ed.
Printing/Collecting
How to print or collect the measurement data is descri ed.
Output terminal
Output terminal of this equipment is descri ed.
Specification
The specification of this equipment is descri ed.

2
Safety precautions
To prevent bodily injury or damage to property, the following safety precautions must be
observed.
This manual contains important safety and operating instructions for this equipment.
Read all instructions, before using the instrument.
After reading all instructions, keep this manual for quick reference
１
１１
１．
．．
．Expressions of safety instructions
WARNING
Calls attention to a procedure, practice, or condition that could possibly cause death or
bodily injury.
CAUTION
Calls attention to a procedure, practice, or condition that could possibly cause bodily
injury or damage to instrument.
NOTE
It is an advisory explanation to use this equipment correctly. (It is not a safety
instruction )

3
２
２２
２．
．．
．Important safety instructions
WARNING
Stop using the instrument, when producing smoke, bad smell or noise.
It causes fire or shock hazard.
Turn off the PO ER switch and unplug the AC adaptor (optional)
from outlet as soon as possible.
To reduce risk of injury, take it to a qualified serviceman when
service or repair is required.
Please contact us or the dealer when service or repair is required.
Do not substitute parts or modify instrument.
It causes bodily injury, fire or shock hazard.
Do not use the AC power adaptor except the optional AC-1026.
Other type of adaptor may cause damage to the instrument.
Do not touch the plug of AC adaptorwith wet hands.
It causes shock hazard.
Stop using the instrument, when an object or liquid falls/spills into
the instrument.
It causes fire or shock hazard.
Turn off the PO ER switch and unplug AC adaptor (optional)
from outlet as soon as possible.
To reduce risk of injury, take it to a qualified serviceman
when service or repair is required.
Please contact us or the dealer when service or repair is required.

4
３
３３
３．
．．
．Cautions for usage
This equipment is assembled with precision parts.
To prevent bodily injury or damage to the instrument, the following cautions must be observed.
CAUTION
Keep the instrument away from the children.
If the instrument falls down, it is very dangerous.
Do not place it on an unstable place (shaky table or sloping place).
If the instrument falls down, it is very dangerous.
Do not expose the instrument to moisture or dust.
It causes fire or shock hazard.
Do not put heavy objects on the instrument.
It causes damage to the instrument.
Connect cable properly, it is instructed in this manual.
rong connection causes fire hazard.
Before you move the instrument to other place, turn off the PO ER
switch and remove all wiring.
Do not put the instrument on the vibrating place.
If the instrument falls down, it is very dangerous.
For avoiding liquid spill, remove alkaline dry batteries
when you don’t use for long period of time.
It is recommended to remove alkaline dry batteries after each use.

5
Disclaimer in usage of the software product
hen this software is used, it is assumed that the customer has accepted all the following items.
1 The customer is permitted to use this software product based on the agreement of use
conditions, not to transfer or sell to the third party.
In case the customer cannot accept the following items, the product cannot be cleared to
use, either.
2) The software product, together with attached documents such as instruction manuals,
belongs to KANOMAX and is protected by the Copyright Law., etc.
The customer is not permitted either to copy, modify, alter this software product, or remove the
product label.
The customer is not permitted to create any similar products, or have the third party do
these actions.
3) Please do try hard to keep every user or users scheduled about the items above before the
use of this product.
As would be realized, the customer may be considered to have acted against the agreement
when the user of this product acted against it.
Disclaimer in usage of the SD card
（1） The folder / file in the Memory card (SD card) please do not perform a change
(addition and deletion) or a format from PC.
hen I changed it, normalcy does not work.
（2） hen I delete a data file in the memory card (SD card), please carry out deletion by using
the main body of MODEL 4431.
＜Contents of the Memory card (SD card)＞
STD・・・・・・・The folder of the data file of the normal measurement
001.csv
・
・
nnn.csv
TM5・・・・・・・Power average value of the maximum sound pressure level in a given interval
001.csv
・
・
nnn.csv
（File name：001.csv～999.csv）
The data file
（File name：001.csv～999.csv）
The data file

6
The Quantifier form of International standard and JIS (Japanese Industrial Standards)
The Quantifier is excerpted from ISO 1996、3891、IEC 60804、JIS Z 8202、8731.
Notation of
MODEL4431 Name
Frequency
weighting
characteristics
ISO IEC JIS
LA A-weighted sound
p essu e level
A-weighted LpA － LpA
LC C-weighted sound
p essu e level
C-weighted － － －
LP Sound p essu e level Z-weighted LP － LP
LAeq Equivalent continuous
A-weighted sound
p essu e level
A-weighted LAeq ,T LAeq ,T
LAeq ,T
LCeq Equivalent continuous
sound p essu e level
C-weighted － LCeq, T
－
Leq Equivalent continuous
sound
p essu e level
Flat － － －
LAE A-weighted LAE LAE LAE
LCE C-weighted － － －
LE
Sound exposu e level
Flat － － －
LA05 5% of the pe centile
sound
p essu e level
LA5,T
－ LA5,T
LA10 10% of the pe centile
sound p essu e level
LA10,T
－ LA10,T
LA50 50% of the pe centile
sound p essu e level
LA50,T
－ LA50,T
LA90 90% of the pe centile
sound p essu e level
LA90,T
－ LA90,T
LAN
LA95 95% of the pe centile
sound p essu e level
A-weighted LAN,T
LA95,T
－
LAN,T
LA95,T
LAmax Maximum sound
p essu e
level
A-weighted
－ － －
LAmin Minimum sound
p essu e
level
A-weighted
－ － －
LCpeak Peak sound p essu e
level C-weighted
－ LCpeak
－

7
Contents
Overview 8
Locations and their functions 9
Front / Back / Side view of the main body 9
Operating Portion 10
Side view of the main body 11
System components 12
AC adaptor AC-1026 13
Mounting on the tripod 13
Memory Card（SD card）and program card(Option) 13
Extension Cable（BC-0046） 13
Connection with printer（BS2-80TS） 13
Level recorder （TYPE 5008A） 13
Connection with personal computer 14
Display (Explanation of measurement screen )
Measurement screen 15～16
Preparation
Battery installation 17
LCD back-light 18
LCD adjustment 19
Calendar adjustment 20
Calibration 21～22
Menu screen 23～27
Measuring Procedure
Sound pressure level（Lp）measurement ： Frequency weighting key Z 28
Temporal level display of Sound pressure level（Lp）measurement 29
A-weighted sound pressure level（LA/LC）：Frequency weighting key A,C 30
Time level display of A-weighted sound pressure level（LA/LC） 31
Equivalent continuous A-weighted sound pressure level（LAeq）measurement 32
Single event sound exposure level（LAE）measurement 33
Maximum A-weighted sound pressure level（LAmax）,
Minimum A-weighted sound pressure level（LAmin）measurement 34
Precentile level（LAN）measurement 35
Preak sound pressure level（Lpeak）measurement 36
C-weighted preak sound pressure level （Lcpeak）measurement 37
C-weighted equivalent continuous sound pressure level （LCeq）measurement 38
Power average value of the maximum sound pressure level in a given interval（LAtm5）
measurement 39
Impulse sound pressure level（LAI）measurement 40
Impulse equivalent continuous A-weighted sound pressure level (LAIeq)
measurement 41
Memory function
ecord of memory 【Nomal】mode, 【Auto】mode 42～45
Data recall from the memory 46
How to use the Memory card (SD Card -Standard-) 47～48
Example of file creation 49
Print/Data management
Print 50
Saveing Data to PC 51
Out put terminal 52
Specifications 53～55
Pin Connections and How to Connect the Extension cable 57～58
Communication Command 59～64

8
Overview
This specification refers to the Sound Level Meter MODEL4431.It covers most measurands
corresponding to JIS and –ISO.The 4431, provided with many functions usually mounted in
equivalent products, has been realized at an extremely low price.
Measurement of most measurands, such as Equivalent continuous A-weighted sound pressure
level (LAeq , Sound exposure level (LAE , A-weighted sound pressure level (LA, etc., is possible.
The 4431 was developed to keep comfortable sound environment as well as safe and healthy life
of people, both to be realized by the evaluation of environmental noise such as traffic noise or
industrial equipment noise, or by better understanding of the labor health environment at offices,
factories, etc.
The impressive design of 4431 symbolizes satisfactory operations and many performances related
to JIS and/or IEC. It sure is a highly efficient and highly reliable precision sound level meter,
to be supported by the next generation.
Features
● Excellent cost/performance ；covers most measurands in current criteria
● The “0-dB” function 【 world first 】(option
；measurement of the noise of ultra-low sound pressure level is possible.
The function displays the greatest force in the evaluation of “quietness” or sound
quality of silent model of recent IT/OA equipments, as well as in those of
air-conditioning noise level or sound isolation capability of newly built concert
halls where the room ambient noise is below "NC-20 .
● Percentile sound pressure level (LN ；any 5 selectable values is available
● Measurement of Equivalent continuous A-weighted sound pressure level (LAeq
；Measurement of environmental noise required to
secure occupational heal
● Wide linearity range of 100dB ；Covers wide range of 20~130dB
● Equipped with an USB Ver1.1 function；allows data processing for PC
● Equipped with a memory function ；realized by in built-in memory or memory card.
● Backlight LCD screen for high ；visibility and easy-on-the eye display
● Timer function ；measurement can be paused or restarted at any
point of time by installing the function.
● Abundant program cards(Option ；1/1and 1/3-octave Real-time analysis card, FTT
analysis Card, RSR card (Real sound recording Card , etc.
Configuration
1）Sound Level Meter MODEL4431 1
2）Memory Card ( SD Card 1
3）Windscreen(φ50 1
4）Batteries LR6 4
5）Screwdriver 1
6）Hand strap 1
7）Instruction manual 1
8）Carrying case 1
9）Option
・1/1 and 1/3-octave Real-time Analysis Card NA-0038
・FFT Analysis Card NA-0038F
・RSR Card ( Real Sound Recording Card NA-0038R
・Data management software NA-0038M
・0-dB function (0~80dB(A 4431(0dB
・AC adapter AC-1026
・Output cable(BNC pin cord) BC-0071
・USB interface cable BC-0038PC
・Extension cable(2m～30m) BC-0046-2～30
・Tripod exclusively for sound level meter NA-0333
・Sound calibrator TYPE2127

9
Locations and their functions
Front/Back/Side view of the main body:
Front
Microphone Preamplifier
The microphone and the preamplifier are comprised as one body.
They can be placed apart from the main body and connected to it with the optional
extension cable
Display
It is a liquid crystal display with backlight. The sound level is displayed here with
numerical value or bar graph. The operation condition of the sound level meter, setting
condition of the measurement mode, various alerts, etc. are also displayed.
Windscreen(φ
φφ
φ50)
The measurement error may be caused in the windy outdoor site or noise measurement of
ventilator, since the wind drives against the microphone generating the wind noise.
Under such conditions, it is possible to reduce the wind noise by attaching the φ50
windscreen to the microphone
Strap
Used to prevent unexpected drop of the main body. Please put it through your wrist when
you measure with the body in hand.
Back
Female screw for tripod
It is possible to mount the main body to this tripod for the camera with screw.
Batteries case
Put four LR6 type Alkali dry batteries.
Microphone
Preamplifier
Threaded
retaining ring
Front panel
Display
Side panel
Female screw for tripod
Female screw
for tripod
Battery cover
ind screen(φ50)