MIKASE LABORATORY - PT MITRA KATIGA SEJAHTERA / SUPPLIER ALAT UJI KUALITAS UDARA, AIR, CUACA , KEBISINGAN SERTA GETARAN

Keterangan

The HD 2020 sound level calibrator is a portable, battery operated sound source, suitable
for sound level meters ( portable and laboratory) and acoustic stations. It allows calibrating
½ ” microphones with mechanical dimensions compliant with IEC 61094-1 ( “ Measurement microphones. Part 1: Specifications for laboratory standard microphones” ) and IEC 61094-4
( “ Measurement microphones. Part 4: Specifications for working standard microphones” ) . The calibration pressure levels of 94dB and 114dB can be selected by the keypad. The 1000 Hz frequency cannot be changed. If the microphone is absent or not inserted correctly into the calibrator cavity, the sound level will blink on the display. To conserve battery life, the instrument is provided with an automatic power off function: if you leave the instrument on with open cavity, it switches off automatically after 30 seconds. If the cavity is closed and the microphone is inserted, the instrument switches off 5 minutes after turning on, provided that you don’ t press any key. The calibrator display shows calibration pressure level, battery life, current date and time.

TECHNICAL SPECIFICATIONS
The calibrator HD 2020 falls in the characteristics of class 1 according to IEC 60942-2003
and meets the requirements of the ANSI S1.40-1984.
Coupling cavity: for standard 1/ 2” microphones ( 12.7 ± 0.03 mm) according to IEC 61094-1 and IEC 61094-4
Frequency: 1000 Hz
Frequency tolerance: 1% in the range -10...+ 50° C and 10% ...90% RH
Sound pressure level: 94.0 dB and 114.0 dB ± 0.2 dB at 1 kHz ( referred to 101.3 kPa, 23° C ± 3° C and 65% R.H.)
Reference conditions: 20° C, 50% RH, 101.3kPa, 10 mm3 cartridge volume
Stabilization time: 10s
Total distortion: