เครื่องวัดความดังเสียง เครื่องวัดเสียง Sound Meter - เครื่องวัดระดับความดังเสียง Sound Level Meter 840028 (SPER SCIENTIFIC USA)
Sound Level Meter with PC Interface Big backlit display, PC Interface & background sound absorber
"High accuracy meets ANSI S1.4 and IEC 651 Type 2 standards"
840028 : เครื่องวัดเสียง Graphic Display Sound Meter ยี่ห้อ Sper Scientific, USA
Advanced Features::
Covers 30 ~ 130 dB in the A scale and 35 ~ 130 dB in the C scale with a resolution of 0.1 dB and an accuracy of ±1.5 dB. Meets ANSI S1.4 and IEC 651 Type 2 standards, and includes A & C decibel frequency weighting scales, fast or slow response, AC or DC output, low battery indicator, peak function and can be calibrated in compliance with OSHA using Acoustical Calibrator : SC05.
Contains many advanced features including: An even larger LCD display with an analog bar graph, auto-ranging, min/max functions and a USB computer interface. Another special function allows you to accurately measure equipment noise in the presence of high background noise. Comes ready to use with a windscreen, 9V battery, instructions, and a hard shell carrying case. N.I.S.T. traceable certificate of calibration available.
Specifications:
|
Display: | |
3½ digits LCD
Bargraph Display: 50dB display range (1dB resolution) | |
|
Range: | |
6 ranges in 10 dB step: 30 ~ 80dB, 40 ~ 90dB, 50 ~ 100dB,
: 60 ~ 110dB, 70 ~ 120dB, 80 ~ 130dB | |
| Auto Range: | |
30 ~ 130dB | |
| Accuracy: | |
±1.5 dB | |
| Frequency: | |
31.5 Hz to 8 KHz | |
| Resolution: | |
0.1dB | |
| Microphone Size: | |
6mm (diameter) Electric Condenser Microphone | |
| Measurement Weightings: | |
Level A: 30dB ~ 130dB | |
| Level C: 35dB ~ 130dB | |
| Response: | |
Fast - readout is maximum value at 0.2 seconds
Slow - readout is maximum value at 1.5 seconds | |
| Output Signal: | |
AC - 0.707Vrms at full scale
DC - 10mV per dB | |
| Quasi-Analog Bar Indicator: | |
1dB display steps, 50dB display range, updated every 50ms | |
| Operating Temperature: | |
32 to 122°F (0 to 50°C) | |
| Operating Humidity: | |
10 ~ 90% Relative Humidity | |
| Power Supply: | |
One 9V battery (approximate life: 20 hours alkaline) | |
Optional Accessories:
Data Acquisition Software - 840052
USB Cable - 840054