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INSTRUMENTATION FOR
SOUND AND VIBRATION MEASUREMENTS
SV 33A
Acoustic calibrator
User's manual
Warsaw, March 2017
SVANTEK Sp. z o.o.
www.svantek.com
e-mail: office @ svantek.com.pl
02-872 Warszawa, ul. Strzygłowska 81
tel./faks: +48 22 51 88 300
VAT EU PL5270105272
REGON 002175672
KRS 000192065
Registered in the Warsaw District Court, XII Economic Department
Initial Capital 100 000 PLN
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Summary of Contents for Svantek SV 33A
- Page 1 INSTRUMENTATION FOR SOUND AND VIBRATION MEASUREMENTS SV 33A Acoustic calibrator User’s manual Warsaw, March 2017 SVANTEK Sp. z o.o. www.svantek.com e-mail: office @ svantek.com.pl 02-872 Warszawa, ul. Strzygłowska 81 tel./faks: +48 22 51 88 300 VAT EU PL5270105272 REGON 002175672...
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Page 2: Table Of Contents
1.1. Calibration ....................2 1.2. Accuracy of calibration ................. 2 1.3. Classification of sound level meters and acoustic calibrators ....... 2 Acoustic calibrator SV 33A ................... 3 2.1. General description ..................3 2.2. Usage of the calibrator ................. 4 2.2.1. -
Page 3: Introduction
SV 33A USER MANUAL 1. Introduction 1.1. Calibration One of the fundamental questions that are most frequently asked while taking a measurement is whether its result is accurate. Proceeding with a measurement without having a positive answer to this question may result in obtaining data of no practical use and wasting our time. -
Page 4: Acoustic Calibrator Sv 33A
2. Acoustic calibrator SV 33A 2.1. General description The SV 33A acoustic calibrator is a small, portable one-range Class 1 device (sound source), see Picture 1. Powered by two LR03/AAA batteries, it contains a loudspeaker producing acoustic pressure, reference microphone for monitoring... -
Page 5: Usage Of The Calibrator
The button is used to turn ON and OFF the device. In this case the button pushing has immediate effect. Either when the SV 33A is ON or OFF pressing the button over 10 seconds and releasing it will cause full reset of the system. Normally this function is not necessary. -
Page 6: Indicators
Full reset of the system 2.2.2. Indicators There are two LED to indicate the state of the SV 33A calibrator. One of them is titled “114 dB” and shows the state of the generated level. After the calibrator is put on the microphone and switched on, acoustic pressure inside the calibrator’s chamber is adjusted to the desired level. -
Page 7: Replacing The Battery
SV 33A USER MANUAL Picture 4. The top view of the SV 33A calibrator with one diode on 2.3. Replacing the battery The battery should be replaced as follows: a) remove the rubber cover on the button and diodes’ side... - Page 8 SV 33A USER MANUAL d) put new batteries in place of the discharged ones with polarization as indicated on the printed board and calibrator’s case e) put on the cover so that the diodes fit the corresponding holes in it...
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Page 9: Sv 33A Datasheet
SV 33A USER MANUAL 3. SV 33A Datasheet Output signal 114 dB, with respect to 20 Pa in reference Sound Pressure Level (SPL): conditions Accuracy: IEC 60942: 2003 standard, Class 1 0.3 dB SPL Accuracy: 0.02 % Frequency accuracy: Total Harmonic Distortions (THD): < 0.75 % Reference conditions 23 C... - Page 10 SV 33A USER MANUAL Warning: In the case of water condensation inside calibrator SV 33A can generate significantly lower acoustic pressure then specified. Condensation can appear when cold device is moved to the warmer environment. In such a case certain acclimatization time is required.
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