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FT3432
Instruction Manual
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Instruction Manual
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Instruction Manual
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Hioki FT3432 Instruction Manual

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FT3432
Instruction Manual
SOUND LEVEL METER
Read carefully before use.
Keep for future reference.
Jan. 2022 Revised edition 7 FT3432A981-07 22-01H
EN
Conrming Package Contents
When you receive the instrument, inspect it carefully
•
to ensure that no damage occurred during shipping. If damage is evident, or if it fails to operate according to the specications, contact your dealer or Hioki representative.
Conrm that these contents are provided.
• FT3432 Sound Level Meter (1)
• WS-14 Windscreen (1)
• NL-27-089 Silicon cover (1)
• VM-63-017 Hand strap (1)
• NL-27-014 Windscreen fall out
prevention rubber (1)
• 9757 Carrying case (1)
• Size AAA alkaline batteries (IEC LR03) (2)
• Instruction Manual (This document) (1)
Latest edition of instruction manual
The conte nts of this manua l are subject to chan ge, for example as a result of product i mprovements
or ch a n ges to speci  c ation s . Th e latest edit i on can be downloaded from Hioki’s website.
https://www.hioki.com/global/support/down-
load
FT3432A981-07
i

FOR SAFETY

In this manual, important safety instructions are specially marked as shown below. To prevent the risk of death or injury to persons and severe damage to the unit or peripheral equipment, make sure that all instructions are fully understood and observed.
Important
Note
Indicates that the product conforms to regulations set out by the EU Directive.
This product can be used in any areas including resi­dential areas.
To conform to the EU requirement of the Directive on Waste Electrical and Electronic Equipment, the symbol mark on the right is shown on the instrument.
Chinese RoHS: The mark for the Directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment (only for China)
ii
Disregarding instr uctions print ed here in curs the risk of damage t o the prod uct.
Mentione d about the t ips to use thi s unit prop erly. (This messages d o not have to do wi th sa fety.)
Conrming Package Contents .............................................................. i
FOR SA FETY ..................................................................................... ii
Precautions ......................................................................................... iv
Outline ................................................................................................ 1
Controls and Functions........................................................................ 2
Batteries .............................................................................................. 4
Attachments ........................................................................................ 6
Windscreen .................................................................................... 6
Windscreen fall out prevention rubber ........................................... 6
Silicon cover ................................................................................... 7
Hand strap ...................................................................................... 8
Connecting external equipment ..................................................... 9
State transition diagram (functions and operation keys) ................... 10
Measurement screen and processing screen ...................................... 12
Power on and off ............................................................................... 14
Measurement ..................................................................................... 14
Calibration ......................................................................................... 15
Menu settings .................................................................................... 16
Sleep mode ........................................................................................ 18
Recalling stored data ......................................................................... 19
Initializing ......................................................................................... 20
Error .................................................................................................. 20
Specications .................................................................................... 21
Description for IEC 61672-1 .............................................................. 26
IEC61672-1 (JIS C 1509-1) Frequency Response ......................... 37
Reference incidence direction and reference point position ......... 39
Frequency Response .................................................................... 39
Effect of Windscreen WS-14 ....................................................... 40
The greatest susceptibility conguration for radio frequency elds
Statement of conforming to the basic statement ......................... 43
Adjustment data for sound calibrator ........................................... 43
The lower and upper limits of the linear operating range ............ 43
Directional Characteristics .......................................................... 44
Random incidence response ......................................................... 46

Contents

42
iii

Precautions

Operate the unit only as described in this manual.
•
Do not touch any parts of the unit other than necessary for
•
operation.
Do not drop the unit. Protect it from shocks and vibration.
•
The permissible environmental temperature range for operation
•
of the unit is -10 to +50°C. Relative humidity must be between 10% and 90%RH.
Do not use or store the unit in locations which may be subject
•
to water, direct sunlight, high temperatures or humidity. Also protect the unit from air with high salt or sulphur content, gases or the inuence of chemicals.
Do not forget to turn the unit off after use. Remove the batteries
•
if the unit is not to be used for some time.
When disconnecting cables, always hold the plug and do not
•
pull the cable.
If the unit becomes dirty, wipe the unit clean with a soft cloth
•
slightly moistened with water or a neutral detergent. Never use solvents such as benzene, alcohol, acetone, ether, ketone, thin­ners or gasoline. Doing so could deform and discolor the unit.
Do not insert any objects such as pins, metal scraps, conducting
•
plastic etc. into any opening on the unit.
Do not disassemble the unit or attempt internal alterations.
•
In case of malfunction, do not attempt any repairs. Note the
•
condition of the unit clearly and contact the supplier.
When disposing of the unit or the batteries, follow national and
•
local regulations regarding waste disposal.
iv

Outline

This unit is a sound level meter that complies with the Japan measurement law, JIS, and IEC. The microphone is a 1/2-inch electret condenser (UC-52). It has a wide 107-dB linearity range, measuring sound levels between 30 and 137 dB, with no need to select the range. The unit has an LCD panel, operation keys, an AC monitor output connector and a DC out connector. It is able to measure the following items.
• Sound level L
• Equivalent continuous sound level L
• Maximum sound level L
• Sound exposure level L
• C weighted peak sound level L It is powered by two size AAA(IEC R03, LR03) batteries. The main unit and preamplier are a single unit so it is not possible to extend the microphone. This unit has the following two level ranges. Wide range: This measures the range between 30 and 137 dB
and allows simultaneous measurement of L
L
, and LE.
max
Peak range: Along with the processing results for wide range,
this range also measures L for measurement becomes 65 dB.
Resume function
This function maintains the settings that have been congured before power-off. The following items are maintained:
• Measurement time
• Time weighting characteristics
• Level range
• Address indication
The following items have predened settings upon startup.
• Frequency weighting characteristic A
• Display processing value type L
p
eq
max
E
Cpeak
, but the lower limit
Cpeak
p
, Leq,
p
1

Controls and Functions

Front Panel
Microphone Preamplier
FT3432 SOUND LEVEL METER
MODE key
START/STOP key
START/STOP MODE A/C/CAL
MENU
POWER
Microphone/preamplier
Microphone and preamplier are integrated in a single enclosure. An extension cable cannot be used.
START/STOP key
Press to start or stop processing. Also used to change setting values in the calibration screen, menu screen, and recall screen.
MODE key
Changes the processing result display in the measurement screen and processing screen. Also used to change setting values in the calibration screen, menu screen, and recall screen.
A/C/CAL key
This key selects the frequency weighting characteristics, calibra­tion screen and recall screen. Pressing and holding this key in the measurement screen changes it to the menu screen.
POWER key
Turns the unit on and off.
A/C/CAL key
POWER key
2
Side View
Strap mount
External connector
This connector is composed of a DC out connector and an AC monitor output connector. (The connector can only be used for one purpose at a time.)
DC out connector
A DC signal corresponding to the sound level can be output from here. The signal after frequency weighting, time weighting, and logarithmic compression is output here (constant output when a DC output cable is connected). Connect the unit with the optional DC output cable to external equipment.
AC monitor output connector
An AC signal weighted with frequency weighting characteristic Z is output here (constant output when an AC monitor output cable is connected). output cable to external equipment. When 110 dB is displayed, output is 1 Vrms
(The upper limit of the output voltage is 1.8
Strap mount
Attach the hand strap here (see page 8). Pass your wrist through this strap when holding the unit for measuring.
External connector
Connect the unit with the optional
DC out connector AC monitor output connector
AC monitor
+60 0 mVr m s
- 400 mVrms
Vrm s
)
3
Rear View
Tripod mounting thread
Battery compartment
Tripod mounting thread
Mount the unit on a camera tripod with this thread.
Battery compartment
Insert two size AAA (IEC R03, LR03) batteries here.

Batteries

Inserting the Batteries
Important
Make sure the unit is turn off before inserting the batteries.
1.
Remove the battery compartment cover on the rear of the unit.
2. Insert two size AAA (IEC R03, LR03) batteries into the battery compartment. Insert correctly as indicated in the compartment.
3. Replace the battery compartment cover.
Press and pull in the arrow direction
Remove the battery compartment cover
4
Battery contact
Insert two size AAA (IEC R03, LR03) batteries
Battery contact
Important
Take care not to reverse the (+) and (-) polarity when inserting the batteries. If batteries are inserted with wrong polarity, the unit willnot operate.
Always use two identical batteries, and replace batteries only as a set. Mixing battery types or old and new batteries can lead to damage.
Remove the batteries from the unit when it is not used.
Do not subject the battery spring contacts to excessive stress. Doing so may weaken the elasticity of the battery spring contacts, resulting in electrical contact failure between the contacts and the batteries.
Battery life (at 23°C, using wide range)
Manganese batteries: approx. 3 hours Alkaline batteries: approx. 9 hours Battery life will be reduced by 20% when a DC output cable is connected.
Battery indication
Indicates battery charge. When the indicator starts to ash, cor­rect measurement is no longer possible. Replace the batteries with fresh ones.
Full charge Indicator flashing
If the indicator starts flashing during processing, processing will end at that point.
You cannot start processing with the START/STOP key when
the battery indication is ashing.
(replace the batteries)
Important
5

Attachments

Windscreen

We recommend attaching the windscreen to reduce wind noise.

Windscreen fall out prevention rubber

“fall out prevention rubber”)
Prevents the windscreen from dropping off the microphone. This is attached to the unit at the time of shipment.
Important
The windscreen can easily drop off the unit, so we recommend attaching the fall out pre­vention rubber.
Be sure to follow the instructions in the fol­lowing diagram when attaching or detaching the fall out prevention rubber. Turning it in the opposite direction may loosen the microphone and cause it to fall off.
Windscreen
(hereafter called
6
Fall out prevention rubber
Turn the fall out prevention rubber only in this direction.
FT3432 SOUND LEVEL METER

Silicon cover

The silicon cover protects the unit from shocks and also makes it easier to grip when held. Fit it to the unit with the windscreen removed, as shown in the following diagram.
Note
You cannot use external connector when the silicon cover is tted. You can attach the hand strap to the silicon cover strap mount.
MENU
POWER
NL-27
SOUND LEVEL METER
FT3432 SOUND LEVEL METER
START/STOP MODE A/C/CAL
START/STOP MODE A/C/CAL
FT3432 SOUND LEVEL METER
MENU
MENU
POWER
POWER
Silicon cover
START/STOP MODE A/C/CAL
strap mount
7

Hand strap

To help prevent dropping of the unit, pass your wrist through this strap when holding the unit for measuring. Attach the hand strap as shown below.
8
Strap mount
Hand strap
When you have not fitted the silicon cover
POWER
Silicon cover strap mount
When you have fitted the silicon cover
Note
Attach the hand strap to the silicon cover if you have tted the unit with the silicon cover.

Connecting external equipment

You can connect external equipment, such as a HIOKI Memory HiCorder to the external connector. Connect as shown in the following diagram.
Note
The connector has the ability to act as a DC out connector and an AC monitor output connector, but it can perform only one of these functions at a time.
External connector
FT3432 SOUND LEVEL METER
Memory HiCorder, DMM etc.
DC output cable CC-98D
START/STOP MODE A/C/CAL
Memory HiCorder etc.
AC monitor output cable
FT3432
CC-98A
MENU
POWER
9
State transition diagram (functions and operation
keys)
Startup Power on
Measurement screen
Frequency
weighting
characteristic A
Frequency
weighting
characteristic C
Calibration screen
Internal calibration
A/C/CAL key
A/C/CAL key
A/C/CAL key
START/STOP key
START/STOP key, or after the measurement time has elapsed
Reduce volume with the START/STOP key
Processing
screen
External calibration
Recall screen
A/C/CAL key
10
Raise volume with the MODE key
A/C/CAL key
Move the address down with the START/STOP key
Move the address up with the MODE key
Pressing the MODE key in the measurement screen or processing
screen changes the display in the following order.
Leq L
L
p
L
only appears when peak range is selected.
Cpeak
LE( L
max
Cpeak
) L
p
Press and hold the A/C/CAL
Menu screen
key
Press and hold the A/C/CAL key
Range setting
Change the setting with the START/STOP key or MODE key
Wide Peak
A/C/CAL key
characteristics
Setting time
weighting
A/C/CAL key
Setting
measurement
time
A/C/CAL key
Change the setting with the START/STOP key or MODE key
F S
Change the setting with the START/STOP key or MODE key 1 m 5 m 10 m 1 h 1 m
11
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