Svantek SV 36 Class 1 Acoustic Calibrator
he SV 36 acoustic calibrator is a small, portable dual-range Class 1 device (sound source).
Powered by two LR03/AAA batteries, it contains a loudspeaker producing acoustic pressure of
defined level 94 db & 114 dB at frequency of 1 kHz.
Reference piezoresistive sensor 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 piezoresistive sensor indicates the
level of currently generated signal in a feedback loop. On the basis of information about the level
of the signal, actual values of pressure and temperature, microprocessor adjusts amplification of
the loudspeaker signal in order to produce appropriate sound pressure level in the calibrator’s
chamber.
Part No
1) Svantek Model SV 36 – Class 1 acoustic calibrator
- SV 36 class 1 sound calibrators meeting IEC 60942:2003
- Features an OPTIC SENSOR that detects microphone presence & turns on/off the calibrator
automatically
- Based on the reference sensors and microprocessor-controlled signal source including digital
Sound Pressure Level, Static Pressure and Temperature compensation
- Robust housing
Specification
Calibration signal parameters:
Sound Pressure Level (SPL) : 114 dB or 94 dB
Accuracy to IEC 60942:2003 : Class 1
SPL Tolerance : ± 0.3 dB
Frequency Tolerance : ± 0.2 %
Total Harmonic Distortion (THD): < 0.50 % for 94 dB
< 0.75 % for 114 dB
General Information
Effective load volume sensitivity : 0.00027 dB / mm3
Level stabilisation time : typically 15 s, max 30 s
Calibrated microphones : 1/2” and 1/4” with SA 30 adapter
Storage temperature range : -25°C ÷ +70°C
CE classification : EN 61010-1: 2010
EN 61326-1:2006
EN 61326:2006
EN 60942:2003
Working Conditions
Temperature range : from -10 °C to +50 °C
(related SPL error ≤ ±0.15 dB)
Atmospheric pressure range : from 65 kPa to 108 kPa
(related SPL error ≤ ±0.10 dB)
Humidity range : from 25 % to 90 % RH
(related SPL error ≤ ±0.05 dB)
Reference conditions
Ambient temperature : 23°C
Atmospheric pressure : 101.3 kPa
Humidity : 30 % ÷ 80 % RH
Effective microphone load : 250 mm3 for microphone type B&K 4134
Volume
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
Stand-by period : around two years
Minimal voltage requirements : 2.1 V
Svantek SV 36 Class 1 Acoustic Calibrator datasheet
Svantek SV 36 Class 1 Acoustic Calibrator user manual
