Svantek SV30A class 1

The SV 30A - two levels acoustic calibrator and the SV 31 - one level acoustic calibrator are the State of the Art instruments. The design of both calibrators is based on the dedicated 1/2” condenser microphone and microprocessor controlled signal source including SV 30A SV 31digital static pressure and temperature compensation. These both features assure excellent stability of the calibration levels and their frequency. The SV 30A and SV 31 calibrators offer exceptional price versus performance ratio on the world market.   TECHNICAL SPECIFICATIONS Calibration signal parametersSound Level Pressure (SPL)   114 dB or 94 dB (SV 30A only) with respect to 20 μPa in       reference conditionAccuracy    IEC 60942:2003 standard, Type 1SPL accuracy     ± 0.3 dBFrequency accuracy   ± 0.2 %Total Harmonic Distortion (THD) less than 0.25 % for 94 dB level and       less than 0.75 % for 114 dB level Reference conditionsAmbient temperature    23oC Atmospheric pressure   101.3 kPaHumidity    30 % ÷ 80 % RHEffective microphone load volume 250 mm3 for microphone type B&K 4134 GeneralEffective load volume sensitivity 0.00027 dB / mm3Level stabilisation time   typically 7 seconds, maximum 10 secondsCalibrated microphones  1/2” and 1/4” with SA 30 adapterStorage temperature range  -25oC ÷ +70 oCCE classification   EMC: EN 50081-1, EN 50082-1      Safety: EN 61010-1:2001 Working conditionsTemperature 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   from 25 % to 90 % RH  (related SPL error ≤  ±0.05 dB) Power supplyBattery type     two LR03 (IEC) / AAA (ANSI) alkaline batteriesContinuous operating time   40 hours for 94 dB level,      30 hours for 114 dB levelStand-by period   around two years (auto switch ON / OFF)Minimal voltage requirements  2.1 V Overall weight and dimensionsWeight     305 grams including batteriesDimensions    65 x 65 x 70 millimetres