Máy đo và phân tích độ ồn Hangzhou Aihua AWA 6291 Real Time Signal Analyzer

No

Model

AWA6291

1

Name

Real Time Signal Analyzer

2

Fulfils Standards

IEC 61672 class 1 and IEC 61260 class 1

3

Microphone

1/2" Prepolarized Condenser Mic. Model AWA14423 (sensitivity: 50 mV/Pa)

4

Preamplifier

AWA14601

5

Frequency Range

10 Hz ~ 20 kHz

6

Range Gain

-10 dB, 0 dB, 10 dB, 20 dB, 30 dB, 40 dB.

Range Error: ≤0.1 dB.

7

Self-generated Noise

<18 dB(A), 23 dB(C), 28 dB(Z)

8

Meas. upper Range

140 dB

9

Peak C Sound Level Measuring Range

50~143 dB

10

Frequency Weighting.

Parallel (simultaneous) A, C, Z. Realized by digital filtering

11

Time Weighting

Parallel F, S, I, Peak C+, Peak C-

12

A/D Bits

24 bits

13

Level Linearity Range

>90 dB

14

Sampling Frequency

48 kHz

15

Display

240×160 graphic LCD, with EL back-lit

16

Display Refresh

1 Hz for value; 10 Hz for graph

17

Main Parameters of Integrating Measurement

Lxyp, Lxyi, Lxeq,1s, Lxeq,T, LAE, E, Cpeak+, Cpeak-, LAFmax, LAFmin, LAFeqT, LASeqT, LAIeqT

Note: X is A, C, Z and Y is F, S, I

18

Main Parameters of Airport Noise Meas

LEPN,Td,Lmax

19

Display Resolution

0.1 dB

20

Real-time Analysis Speed

Approx. 47 times/s (It can simultaneously complete all center frequencies and A, C, Z weighting.)