Acoustic Calibrator

The SV 30A type 1, two levels acoustic calibrator is the State of the Art instrument. The design of this calibrator is based on the dedicated ½" condenser microphone and microprocessor controlled signal source including digital static pressure and temperature compensation. These both features assure excellent stability of the calibration levels and their frequency. The SV 30A calibrator offer exceptional price versus performance ratio on the world market.

With the SV30A acoustic calibrator it is possible to calibrate the ½" microphones and ¼" microphones using SA30 diameter reduction.

FEATURES
  • Type 1 sound calibrator IEC 60942
  • Frequency 1 kHz
  • 94 dB or 114 dB levels
  • PTB type approval
  • ½" internal reference condenser microphone
  • Microphone presence detection
  • Automatic power on/off
  • Dimensions 65 x 65 x 70
  • 2 x AAA batteries
  • Easy in use
  • Hand held, light weight and robust case
    (only ca 300 grams including batteries)

 

SV 30A Technical specifications

Calibration signal parameters

Sound Level Pressure (SPL)

114  dB or 94 dB with respect to 20  µPa in reference condition

Accuracy IEC 60942:2003 standard, Type 1
SPL accuracy ± 0.3 dB
Frequency accuracy ± 0.02 %
Total Harmonic Distortion (THD) less than 0.25 % for 94 dB level and 
less than 0.75 % for 114 dB level

Reference conditions

Ambient temperature

23 oC

Atmospheric pressure 101.3 kPa
Humidity 30 % ÷ 80 % RH
Effective microphone  load volume 250 mm3, microphone type B&K 4134

General

Effective load volume sensitivity

0.00027 dB / mm 3

Level stabilization time typically 7 seconds, maximum 10 seconds
Calibrated microphones ½" and ¼" with SA 30 adapter
Storage temperature range -25 oC ÷ +70 oC

CE classification

EMC: EN 50081-1, EN 50082-1
Safety: EN 61010-1:2001

Working conditions

Temperature range 

from -10 oC to +50 oC (related SPL error ≤  ±0.15 dB)

Atmospheric pressure range from 65 kPa to 108 kPa (related SPL error ≤  ±0.1 dB)
Humidity range up to 90 % RH   (related SPL error ≤  ±0.05 dB)

Power supply

Battery type

2 x LR03 (IEC) / AAA (ANSI) alkaline batteries

Continuous operating time

40 hours for 94 dB level,
30 hours for 114 dB level

Stand-by period around two years (auto switch ON / OFF)
Minimal voltage requirements 2.1 V

Overall weight and dimensions

Weight

305 grams including batteries

Dimensions 65 x 65 x 70 millimetres

SV 30A - 10 Reason Why to Choose

  1. The State of the Art instrument. 
     
  2. Type 1 calibrator. 
     
  3. Excellent parameters, thanks to reference ½" condenser microphone and microprocessor controlled signal source including digital static pressure and temperature compensation 
     
  4. Exceptional price versus performance ratio on the world market. 
     
  5. Instrument can calibrate ½" microphones like also ¼" microphones with SA30 diameter reduction. 
     
  6. Easy in use, microphone presence detection. 
     
  7. Battery saving, automatic power on/off by photo detector. 
     
  8. Long time operating on one battery set (2 years standby/40 hours continuous operation time) 
     
  9. Ergonomic shape. 
     
  10. Robust case.