Hioki FT3432-20 Instruction Manual
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Hioki FT3432-20 Instruction Manual

Hioki FT3432-20 Instruction Manual

Sound level meter
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FT3432
  Instruction Manual
SOUND LEVEL METER
EN
Feb. 2017 Revised edition 3  
FT3432A981-03 17-02H
GlobalTestSupply
www.
.com
Find Quality Products Online at:
sales@GlobalTestSupply.com

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Summary of Contents for Hioki FT3432-20

  • Page 1 FT3432   Instruction Manual SOUND LEVEL METER Feb. 2017 Revised edition 3   FT3432A981-03 17-02H GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 2 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 specifications, contact your dealer or Hioki representative. Confirm that these contents are provided. •...
  • Page 3 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 Disrega rd i ng i nst r uct ions printed here incurs the risk of...

  • Page 4: Table Of Contents

    Contents 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) ....

  • Page 5: Precautions

    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.

  • Page 6: Outline

    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.

  • Page 7: Controls And Functions

    Controls and Functions Front Panel Microphone Preampli er FT3432 SOUND LEVEL METER MODE key START/STOP MODE A/C/CAL A/C/CAL key START/STOP key MENU POWER key POWER Microphone/preamplifier Microphone and preamplifier are integrated in a single enclosure. An extension cable cannot be used. START/STOP key Press to start or stop processing.
  • Page 8 Side View Strap mount External connector DC out connector AC monitor output connector 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.

  • Page 9: Batteries

    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.
  • Page 10 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.

  • Page 11: Attachments

    Attachments Windscreen We recommend attaching the windscreen to reduce wind noise. Windscreen fall out prevention rubber (hereafter called “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 pre-...

  • Page 12: Silicon Cover

    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 fitted.

  • Page 13: Hand Strap

    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. Strap mount Hand strap When you have not fitted the silicon cover POWER Silicon cover strap mount When you have fitted the silicon cover...

  • Page 14: Connecting External Equipment

    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.

  • Page 15: State Transition Diagram (Functions And Operation Keys)

    State transition diagram (functions and operation keys) Startup Pressing the MODE key in the measur Power on Processing screen changes the display in the follo screen Cpeak Measurement only appears when peak range i START/STOP key Cpeak screen START/STOP key, or Frequency Press and after the measurement...
  • Page 16 Pressing the MODE key in the measurement screen or processing wer on Processing screen changes the display in the following order. screen Cpeak only appears when peak range is selected. START/STOP key Cpeak START/STOP key, or Press and after the measurement hold the Menu screen time has elapsed...

  • Page 17: Measurement Screen And Processing Screen

    Measurement screen and processing screen Measurement time Elapsed time Address number Battery indica- Processing tion mark Bar graph, lev- el range scale Sound level Sound level under range overload indi- indication cation Processing re- Processing re- sult under range sult overload indication Processing re- indication...
  • Page 18 Processing result overload indication Appears during processing when the sound level exceeds the measurement range, and remains until the next process starts (when a processing result is shown). Level indication Shows the sound level (L ) and each processing result (L , and L ) as digits.

  • Page 19: Power On And Off

    Power on and off Press the POWER key for 0.5 seconds or more to turn the power on or off. Measurement Selecting frequency weighting characteristics In the measurement screen, press the A/C/CAL key to select either frequency weighting characteristic A or C. (See the state transition diagram on page 10) Processing (measurement) Press the START/STOP key to start the processing.

  • Page 20: Calibration

    Calibration Internal calibration (calibration with an electronic signal) Calibration with the built-in oscillator (1 kHz, sinusoidal wave). In the measurement screen, press the A/C/CAL key to switch to the internal calibration screen. (See the state transition diagram on page 10) Internal calibration screen “Int”, “Cal”, and “94.0dB”...

  • Page 21: Menu Settings

    Menu settings In the measurement screen, press and hold the A/C/CAL key to switch to the menu screen (not available during processing). Range setting Press the START/STOP key or the MODE key to select the fol- lowing range settings. Wide: Measurement range: 30 to 137 dB, L cannot Cpeak...
  • Page 22 Setting time weighting characteristics Press the START/STOP key or the MODE key to select the following settings. F (fast), S (slow) Press the A/C/CAL key to switch to the measurement time settings. Press and hold the A/C/CAL key to return to the measurement screen.

  • Page 23: Sleep Mode

    Sleep mode With the measurement screen being shown and no key is pressed for 10 minutes, the unit enters sleep mode and the sleep mode screen appears. Power consumption is 30% of normal in sleep mode. Situations where the unit will not enter sleep mode The unit will not enter sleep mode in the following situations, even if no key is pressed for 10 minutes.

  • Page 24: Recalling Stored Data

    Recalling stored data In the measurement screen (frequency weighting characteristic C), press the A/C/CAL key three times to show the recall screen (see the state transition diagram on page 10). The most recent processing result is shown. Measurement time Elapsed time Address Shows that this is the recall...

  • Page 25: Initializing

    10 m (10 minutes) Time weighting characteristics F (Fast) Level range Wide Address Error When an error is displayed on the LCD screen, repair is neces- sary. Please contact your dealer or Hioki representative. GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 26: Specifications

    Specifications Applicable legislation The Japan measurement law - Sound level meter JIS C 1509-1:2005 class 2 IEC 61672-1:2013 class 2 JIS C 1516:2014 CE Marking WEEE Directive Chinese RoHS (units shipped to China only) Measurement functions Processing type Sound level L Equivalent continuous sound level L Sound exposure level L Maximum Sound level L...
  • Page 27 Measurement frequency range 20 Hz to 8 kHz Reference frequency 1 kHz Reference sound pressure level 94 dB Frequency weighting characteristics A and C Time weighting characteristics F (fast) and S (slow) Level range Wide range 30 to 130 dB Peak range* 60 to 130 dB * Peak range is used when measuring peak sound level.
  • Page 28 screen. DC out connector DC output: 3 V (full scale), 25 mV/dB Output impedance: 50 Ω Load impedance: 10 kΩ or more AC monitor output connector AC output: +600 mVrms 1 Vrms (at 110 dB) -400 mVrms (Upper limit: 1.8 Vrms) Overload: +2 dB Output impedance: 600 Ω...
  • Page 29 Environmental conditions for operation -10°C to 50°C (14°F to 122°F) 10% to 90% RH (No condensation) Environmental conditions for storage -10°C to 50°C (14°F to 122°F) 10% to 90% RH (No condensation) Dimensions Approx. 120 mm(H)×63 mm(W) ×23.5 mm(D) (4.72”(H)×2.48”(W)×0.93”(D)) Weight Approx.
  • Page 30 23.5 FT3432 SOUND LEVEL METER START/STOP MODE A/C/CAL MENU POWER Left Side View Front View Right Side View Rear View Dimensional Drawings Unit: mm GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 31: Description For Iec 61672-1

    Description for IEC 61672-1 Standard Description Remark paragraph also Performance specifications General 5.1.4 Configuration & normal mode 9.2.1 b) Configuration of operation • FT3432 • WS-14 • Windscreen fall o ut p r eve nt io n rubber • Silicon cover ( Attachments) Nor mal mode of operation Power on and off Unit powered...
  • Page 32 5.1.13 Reference SPL 9.2.5 a), 94.0 dB reference level range, 9.3 a), b), Wide range Reference orientation, reference Fig. 1 Reference position of microphone. incidence direction and reference point position 5.1.14 Operating of the hold facility and Mea su rement: the means for clearing a display Maximum time- that is held. weighted sound level L m a x weighted peak sound level 5.1.15 Dummy microphone: Design 9.3 g) C a p a c i t a n c e o f goal and tolerance dummy microphone: 19 pF...
  • Page 33 5.2.4 Data for correction - with and 9.2.4 d) Fig. 2 Frequency 5.2.5 without windscreen - for : 9.2.5 b) resp onse of t he - Deviation of average frequency microphone UC-52 response to uniform frequency (including the case response. reflection) - Case reflection and microphone Fig. 4 Influence of diffraction WS-14 on acoustic Including values for expanded p e r fo r m a n c e of uncertainties.
  • Page 34 5.6.3 Self-noise at the more sensi- 9.3 h) Dummy microphone tive ranges with dummy micro- (19 pF) phone Maximum value Equal to 5.6.1 Typical value A: 19 dB C: 24 dB Time weighting F and S 5.7.1 Description of time weightings 9.2.2 d) F, S that are provided 5.10 - 5.11 Overload and Under-range indication 5.10.1 Operation & interpretation of 9.2.5 k) M e a s u r e m e n t overload indicators...
  • Page 35 5.16 Analogue and digital outputs 5.16.1 Electric output connector (AC 9.2.5 p) Frequency weight- output) ing: Z +600 mVrms 1 Vrms -400 mVrms (at 110 dB) Output range: 1.8 Vrms or less Output impedance: 600 Ω Load impedance: >10 kΩ Electric output connector (DC Frequency weight- output) ing: A, C Output voltage: 3.0 V (at 130 dB), 25 mV/dB Output range: 0.5 to 3.2 V Output impedance:...
  • Page 36 5.20 Power supply 5.20.2 Maximum and minimum power 9.3 j Maximum: 3.6 V supply voltage Minimum: 1.8 V 5.20.3 Battery types & battery life 9.2.3 a) Batteries 5.20.4 Operation from an external 9.2.3 c) power supply 5.20.5 Public power supply voltage 9.2.3 d) Environmental, electrostatic and radio frequency criteria 6.1.2 Time interval for needed to 9.3 l) T e m p e r a t u r e stabilize after environmental...
  • Page 37 Effect of optional accessories 9.2.6 a) Fig. 4 Influence of (windscreen) WS-14 on acoustic p e r fo r m a n c e of FT3432 Statement of conformance with Compliant with IEC optional accessories (wind- 61672-1 (JIS C 1509- screen) 1), with Windscreen WS-14 mounted Operation of 1/1 - 1/3 octave 9.2.6 c) band filters Details about connection & ef- 9.2.6 d)
  • Page 38 9.2.2 c) Description of the frequency 5.1.10 Refer to 5.1.10 weightings 5.4.12 Refer to 5.4.12 9.2.2 d) Description of the time weight- 5.7.1 Refer to 5.7.1 ings 9.2.2 e) Identification of the level ranges 5.1.12 Refer to 5.1.12 (A-weighted @ 1 kHz) 9.2.2 f) Operation of the level range 5.1.12 Refer to 5.1.12 control 9.2.2 g) Description of the display and...
  • Page 39 9.2.4 d) Data for correction - with and 5.2.4 - Refer to 5.2.4 - without windscreen - for : 5.2.5 5.2.5 - Deviation of average frequency response to uniform frequency response. - Case reflection and microphone diffraction Including values for expanded uncertainties. In 1/3 octave frequencies for 63 Hz to 1 kHz and 1/12 octave fre- quencies for 1 kHz to 16 kHz 9.2.5 Operating the sound level meter 9.2.5 a) Reference direction 5.1.13 Refer to 5.1.13 9.2.5 b) Procedure to measure sound, 5.1.6...
  • Page 40 9.2.5 j) Operation of the reset function or Measurement results and overload (measurement val- peak ues, overload indi- cation, under-range indication) are reset when a new mea- surement is started. Time required for measurement initial- ization: < 1 second 9.2.5.k) Operation & interpretation of 5.10.1 Refer to 5.10.1 overload indicators 9.2.5 l) Operation of user-selectable 5.14 Refer to 5.14 thresholds...
  • Page 41 Information for testing 9.3 a) Reference sound pressure level 5.1.13 Refer to 5.1.13 9.3 b) Reference level range 5.1.13 Refer to 5.1.13 9.3 c) Microphone reference point 5.1.13 Refer to 5.1.13 9.3 d) For A-weighted sound levels: 5.2.7 Refer to 5.2.7 Adjustment data for multi-fre- quency sound calibrator and/or electrostatic actuator 9.3 e) Nominal A-weighted sound lev- 5.5.9 Refer to 5.5.9 els at the upper and lower limits of the linear operating range on each level range. - For frequencies 31.5 Hz, 1, 4, 8 and 12.5 kHz 9.3 f) Starting point for the level lin-...

  • Page 42: Iec61672-1 (Jis C 1509-1) Frequency Response

    IEC61672-1 (JIS C 1509-1) Frequency Response "Nominal "Exact "UC-52 "FT3432 "FT3432 "Total "Wind "Total "Total frequency frequency Frequency Frequency Electrical Response screen Response expanded (Hz)" (Hz)" Response Response Response (dB)" effect (WS-14 uncertainty" (dB)" (dB) (dB)" (dB)" combined) case reflec- (dB)"...
  • Page 43 "Nominal "Exact "UC-52 "FT3432 "FT3432 "Total "Wind "Total "Total frequency frequency Frequency Frequency Electrical Response screen Response expanded (Hz)" (Hz)" Response Response Response (dB)" effect (WS-14 uncertainty" (dB)" (dB) (dB)" (dB)" combined) case reflec- (dB)" tion" 3750 3758.4 -0.4 -0.1 -0.1 0.3 4000...

  • Page 44: Reference Incidence Direction And Reference Point Position

    Reference incidence direction and reference point position Reference direction of incidence Reference point position Center of diaphragm plane Fig. 1 Reference incidence direction and reference point position Frequency Response The frequency response of a sound field microphone is ex- pressed as the frequency response in the reference direction of incidence (0º). The diagram below shows an example for the frequency response of the microphone UC-52. -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 1 000 10 000...

  • Page 45: Effect Of Windscreen Ws-14

    Effect of Windscreen WS-14 The windscreen WS-14 reduces measurement errors due to wind noise. The WS-14 characteristics are shown below. Frequency weighting A FT3432 With WS-14 Wind velocity (m/s) Frequency weighting C FT3432 With WS-14 Wind velocity (m/s) Fig. 3 Wind noise reduction effect GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 46 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 1 000 10 000 100 000 Frequency (Hz) Fig. 4 Inf luence of WS-14 on acoustic performance of FT3432 (Referenced to FT3432 characteristics) GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...

  • Page 47: The Greatest Susceptibility Configuration For Radio Frequency Fields

    The greatest susceptibility configuration for radio frequency fields FT3432 SOUND LEVEL METER Memory HiCorder, START/STOP MODE A/C/CAL MENU Option cable POWER FT3432 Polarization direction is parallel to drawing plane Antenna Operation mode: normal operation Connection pattern - Option cable Fig. 5 The greatest susceptibility configuration for radio frequency fields GlobalTestSupply www.

  • Page 48: Statement Of Conforming To The Basic Statement

    Statement of conforming to the basic statement Tab. 1 Statement of conforming to the basic statement Immunity to AC power The specification of IEC 61672-1 class 2 is frequency fields satisfied Immunity to RF fields The specification of IEC 61672-1 class 2 is satisfied Emissions The specification of IEC 61672-1 class 2 is satisfied Adjustment data for sound calibrator Tab. 2 Adjustment data for sound calibrator Frequency (Hz) Correction (dB)

  • Page 49: Directional Characteristics

    Directional Characteristics The directional characteristics of FT3432 is a measure of its dif- fering sensitivity for sound waves arriving from various angles. Since the electret condenser microphone used in the FT3432 is a pressure-sensitive type, it should be equally sensitive in all directions. However, refraction and cavity effects cause a certain microphone directional response at high frequencies. Fig. 6 Directional Characteristics with Horizontal Direction 350° 0° 10° 20° 340° 330° 30° 320° 40° 310° 50° -5dB 300° 60° 500 Hz -10dB 290° 70° 1 kHz -15dB 280° 80° 2 kHz 270° 90° 4 kHz 260°...
  • Page 50 Tab. 4 Tab. 5 Directional Characteristics with Horizontal Directional Characteristics with Vertical Di- Direction rection Frequency [Hz] Frequency [Hz] 501 1000 1995 3981 7499 15849 501 1000 1995 3981 7499 15849 0º 0º 10º -0.07 -0.01 -0.08 -0.03 -0.05 -0.23 10º -0.02 0.00 -0.05 0.06 0.10 -0.40 20º...

  • Page 51: Random Incidence Response

    Random incidence response 1 000 10 000 100 000 Frequency (Hz) Fig. 8 Random incidence response GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 52 16-01 EN GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
  • Page 53 GlobalTestSupply www. .com nd Quality Products Online at: sales@GlobalTestSupply.co...

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