Svantek SV 971A ເຄື່ອງວັດແທກລະດັບສຽງ (Class 1; 17–140 dBA; 5 Hz–20 kHz)
Applications: Sound measurements; Environmental noise; Occupational noise; Building acoustics.
Hardware Features:
Number of channels: 1.
Self-vibration detection: Yes.
Auto-calibration: Yes.
Bluetooth: Yes.
Communication Interfaces: USB, Bluetooth.
Display: Yes.
Keyboard: 8 keys.
Memory: uSD card 32 GB.
Battery type: 4 x AAA.
Operating time: 16-24 hours.
Operating temperature range: -10 °C to 50 °C (14 °F to 122 °F).
Humidity range: Up to 95 % RH, non-condensed.
Weight: 225 grams.
Size: 232.5 x 56 x 20 mm.
Sound Measurements Features:
Standards: Class 1: IEC 61672-1:2013; Class 1: IEC 61260-1:2014.
Type approvals: Pattern approval to IEC 61672.
Microphone type: ACO 7152.
Preamplifier type: SV 18A.
Linear operating range to IEC 61672: 24 dBA Leq ÷ 140 dBA Peak.
Total measurement range: 17 dBA Leq ÷ 140 dBA Peak.
Internal noise: < 17 dBA Leq.
Frequency range: 5 Hz ÷ 20 kHz.
Weighting filters: Frequency weighting: A, B, C, Z, LF.
Time constants: Time weighting: Slow, Fast, Impulse.
Exchange rates: 2, 3, 4, 5, 6.
Criterion levels: Adjustable.
Profiles per channel: 3.
Min logging step: 100 ms / 2 ms in RT60.
Statistics: Ln (L1-L99).
Statistics in octaves or third octaves: Yes.
Audio recording: Option.
Voice comments: Option.
1/1 octave: Option.
1/3 octave: Option.
RT60: Option.
STIPA: Option.
ຮັບສ່ວນຫຼຸດພິເສດຕາມປະລິມານ, ອັບເດດລາຄາຂາຍສົ່ງ ແລະ ການແຈ້ງເຕືອນສິນຄ້າໃໝ່ສົ່ງກົງເຖິງອິນບັອກຂອງທ່ານ.
ໂດຍການສະໝັກສະມາຊິກ, ທ່ານຍອມຮັບ ເງື່ອນໄຂການໃຫ້ບໍລິການ ແລະ ນະໂຍບາຍຄວາມເປັນສ່ວນຕົວ ຂອງພວກເຮົາ.
ເຂົ້າເຖິງຜູ້ຊ່ຽວຊານທີ່ໄດ້ຮັບການຢັ້ງຢືນຂອງພວກເຮົາໂດຍກົງ