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SV 34B User Manual 

3. 

SV 34B TECHNICAL SPECIFICATIONS  

 

Output signal 

Sound Pressure Level (SPL): 

114 dB, with respect to 20 

Pa in reference conditions 

Output frequency 

1000 Hz 

Accuracy:  

IEC 60942: 2003 standard, Class 1 

SPL Accuracy:  

0.5 dB 

Frequency accuracy:  

0.02 % 

Total Harmonic Distortion (THD)  < 0.75 %  

 

Reference conditions 

Temperature:  

23 

Atmospheric pressure:  

101.3 kPa 

Humidity:  

30-80% RH 

Effective microphone load volume: 

250 mm

3

, microphone type: 

Brüel&Kjaer 4134, SN:1591010 

 

General data 

Effective load volume sensitivity: 

0.00027 dB/mm3 

Level stabilization time:  

typical 7 sec., max. 10 sec. 

Microphone dimensions:  

½” (13.2 mm) or ¼” with reduction adapter SA 30 

Storage temperature range:  

-25 

C to +70 

C (-13 

F to +158 

F) 

CE classification:  

EN 61010-1: 2010, EN 61326-1:2013, EN 60942:2003
 

 

 

 
Working conditions 

Temperature range:  

from 0

C to +40

C (32 

F to 104 

F) 

Atmospheric pressure range:  

from 65 kPa to 108 kPa (19.2 inHg to 31.9 inHg) 

Humidity range:  

from 25% to 90% RH 

 

 
Environmental conditions influence (typical) 

Temperature coefficient:  

5·10

-3

 dB/

Pressure coefficient:  

1·10

-4

 dB/hPa 

Humidity coefficient:  

1.25

·10

-3

 dB/% 

 

 
Power supply 

Battery type:  

two LR03 (IEC)/AAA (ANSI) alkaline batteries 

Continuous operation time:  

30 hours  

Standby mode:  

approx. 2 years 

Minimal operating voltage:  

2.1 V DC 

 

Dimensions and weight 

Weight:  

305 g (10.9 oz) with batteries 

Dimensions:  

65 x 65 x 70 mm 

Содержание SV 34B

Страница 1: ...USER MANUAL SV 34B ACOUSTIC CALIBRATOR Warsaw 2019 03 20 Rev 1 01 Copyright 2019 SVANTEK All rights reserved...

Страница 2: ...3 1 1 Calibration 3 1 2 Accuracy of calibration 3 2 Acoustic calibrator SV 34B 5 2 1 General description 5 2 2 Using the calibrator 6 2 2 1 Button functions 6 2 2 2 Indicators 7 2 3 Replacing the bat...

Страница 3: ...libration factor 1 2 Accuracy of calibration Measuring equipment and measurement methods have deviations The measured variable is affected by environmental conditions temperature and humidity as well...

Страница 4: ...f 1kHz Class Type LS 1 2 Sound level meters dB 0 7 1 0 Acoustic calibrators dB 0 10 0 25 0 40 As shown in Table 1 the acoustic calibrator has unambiguously lower tolerances than the sound level meter...

Страница 5: ...f 1 kHz frequency is digitally generated and feeds the loudspeaker The sampled signal from the reference piezoresistive sensor indicates the level of currently generated signal in a feedback loop Base...

Страница 6: ...l 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 atmo...

Страница 7: ...continuous light Note Calibration should not be performed until the 114 dB diode light is continuous The diode called LOW BAT presents the batteries status When the combined battery voltage is less t...

Страница 8: ...charged batteries d put two new batteries in place of the discharged ones with polarization as indicated on the printed board and calibrator s case e carefully put on the cover so that the diodes fit...

Страница 9: ...c max 10 sec Microphone dimensions 13 2 mm or with reduction adapter SA 30 Storage temperature range 25 C to 70 C 13 F to 158 F CE classification EN 61010 1 2010 EN 61326 1 2013 EN 60942 2003 Working...

Страница 10: ...RF emission in the direction parallel to the axis of the calibrated microphone in the acoustic chamber The lowest level of noise immunity is parallel to the axis of the calibrated microphone in the a...

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