波兰SVANTEK声压校准器

liuxuyong

FEATURES
Type 1 sound calibrator IEC 60942:2003
Frequency 1 kHz
94 dB or 114 dB levels (SV 30A)
114 dB level (SV 31)
1/2” internal reference condenser microphone
Microphone presence detection
Built-in temperature and static pressure compensation
Automatic power on/off
Dimensions 65 x 65 x 70
2 x AAA batteries
Hand held, light weight and robust case
(only ca 300 grams including batteries)
Easy in use

Calibration signal parameters
Sound Level Pressure (SPL) 114 dB or 94 dB (SV 30A only) with respect to 20 μPa in
reference condition
Accuracy IEC 60942:2003 standard, Type 1
SPL accuracy ± 0.3 dB
Frequency 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 conditions
Ambient temperature 23 oC
Atmospheric pressure 101.3 kPa
Humidity 30 % ÷ 80 % RH
Effective microphone load volume 250 mm3 for microphone type B&K 4134
General
Effective load volume sensitivity 0.00027 dB / mm3
Level stabilisation time typically 7 seconds, maximum 10 seconds
Calibrated microphones 1/2” and 1/4” 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 from 25 % 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