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SV 33A USER MANUAL

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7

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

f) holding the cover with one hand fasten the fixing

screws

g) put on the rubber cover

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Summary of Contents for SV 33A

Page 1: ... 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 SV 33A Acoustic calibrator User s manual Warsaw March 2017 ...

Page 2: ...ccuracy of calibration 2 1 3 Classification of sound level meters and acoustic calibrators 2 2 Acoustic calibrator SV 33A 3 2 1 General description 3 2 2 Usage of the calibrator 4 2 2 1 Button functions 4 2 2 2 Indicators 5 2 3 Replacing the battery 6 3 SV 33A Datasheet 8 ...

Page 3: ... is burdened with an error Result obtained from such measurement is only an estimate of the real value of the measured quantity It is impossible to remove the error completely as the values given by the meter are discrete whereas the measured quantity is of continuous nature Hence the purpose of calibration is to limit this inevitable error to a certain acceptable level Maximum absolute value of t...

Page 4: ...ies it contains a loudspeaker producing acoustic pressure reference microphone for monitoring generated level pressure and temperature sensors for measurements of atmospheric conditions and a microprocessor system controlling the operation of the calibrator Sinusoidal waveform of 1 kHz frequency is digitally generated and feeds the loudspeaker Sampled signal from the reference microphone indicates...

Page 5: ... 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 It has been implemented in the case of inappropriate operation of the calibrator caused by external EM radiation subnormal atmospheric conditions etc or internal inappropriate system reset as a result of b...

Page 6: ...ater 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 For the room temperature environment ca 20 deg C the recommended acclimatization time is approximately as follows 30 minutes for the initial calibrator tempera...

Page 7: ...rator 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 b holding the cover unscrew four fixing screws with your fingers c take off the cover and remove discharged batteries ...

Page 8: ...f 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 f holding the cover with one hand fasten the fixing screws g put on the rubber cover ...

Page 9: ...x 10 sec Microphone dimensions and with reduction adapter SA30 Storage temperature range 25 C do 70 C CE classification EMC EN 50081 1 EN 50082 1 Safety EN 61010 1 2001 Working conditions Temperature range from 10 C to 50 C Atmospheric pressure range from 65 kPa to 108 kPa Humidity range from 25 to 90 RH no condensation Environmental conditions influence typical Temperature coefficient 5 10 3 dB C...

Page 10: ... In such a case certain acclimatization time is required For the room temperature environment ca 20 deg C the recommended acclimatization time is approximately as follows 30 minutes for the initial calibrator temperature 10 deg C 15 minutes for the initial calibrator temperature 0 deg C 2 minutes for the initial calibrator temperature 10 deg C Before reaching acclimatization time SV33A cannot be u...

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