Technical parameters:
|
Model |
NM14 |
NM24 |
NM34 |
|
Measuring Range |
30～130dBA, 35～130dBC |
||
|
Accuracy |
±1.5dB |
||
|
Frequency |
31.5HZ-8.5KHZ |
||
|
Dynamic Range |
50dB |
||
|
AC/DC Signal output |
√ |
||
|
Automatic power-off |
√ |
||
|
Low-power display |
√ |
||
|
Overload alarm |
√ |
||
|
Digital bit and resolution |
5Digits & 0.1dB |
||
|
Selection of Dynamic feature |
Fast/Slow |
||
|
Microphone |
1/2 inch Condenser Microphone |
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|
Frequency weighting characteristics |
A & C |
||
|
Selectable measuring level |
√ |
||
|
Maximum value lock |
√ |
||
|
RS232 interface |
- - |
√ |
|
|
Perpetual calendar |
- - |
√ |
|
|
Sampling frequency |
2 times/sec |
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