Svantek SV 35A Class 1 Acoustic Calibrator
SV 35A Class 1 Acoustic Calibrator produces an acoustic pressure of defined level 94 dB & 114 dB at
frequency of 1 kHz. The SV 35A is suitable for calibration of Class 1 and Class 2 sound level meters
and dosimeters with 1/2 microphones.
Unlike many others, the Svantek calibrators feature a robust housing that gives the comfort of a
secure grip to the user. The interior design of our acoustic calibrators is based on the reference
microphone and microprocessor controlled signal source including digital static pressure and
temperature compensation. Due to the feedback regulation control loop our calibrators do not
require any adjustments by the user and operate over a wide range of ambient temperature and
humidity assuring excellent stability of the calibration levels and their frequency. Each acoustic
calibrator is provided with a statement of the calibration which allows the user to be certain that
their instruments will measure correctly.
Part No
1) Svantek Model SV 35A – Class 1 acoustic calibrator: 1000 Hz/94 dB & 114 dB
SV 35A class 1 sound calibrators meeting IEC 60942:2003
- Frequency 1 kHz
- 94 dB or 114 dB levels
- Microphone presence detection
- Built-in reference microphone
- Built-in temperature and static pressure compensation
- Automatic power on/off
- Dimensions 65 x 65 x 70 mm
- Robust housing
Specification
Calibration signal parameters:
Sound Pressure Level (SPL) : 114 dB or 94 dB
Accuracy to IEC 60942:2003 : Class 1
SPL accuracy : ± 0.3 dB
Frequency accuracy : ± 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 61326-1:2013
EN 55022:2010
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 35A Class 1 Acoustic Calibrator datasheet
Svantek SV 35A Class 1 Acoustic Calibrator user manual
