|
Calibration signal parameters |
| Sound Level Pressure (SPL) |
114 dB or 94 dB with respect to 20 µPa in reference condition |
| Accuracy |
IEC 60942:2003 standard, Type 1 |
| SPL accuracy |
± 0.3 dB |
| Frequency accuracy |
± 0.02 % |
| Total Harmonic Distortion (THD) |
less than 0.25 % for 94 dB level and
less than 0.75 % for 114 dB level |
|
Reference conditions |
|
Ambient temperature |
23 oC |
| Atmospheric pressure |
101.3 kPa |
| Humidity |
30 % ÷ 80 % RH |
| Effective microphone load volume |
250 mm3, microphone type B&K 4134 |
|
General |
| Effective load volume sensitivity |
0.00027 dB / mm 3 |
| Level stabilization time |
typically 7 seconds, maximum 10 seconds |
| Calibrated microphones |
½" and ¼" with SA 30 adapter |
| Storage temperature range |
-25 oC ÷ +70 oC |
|
CE classification |
EMC: EN 50081-1, EN 50082-1
Safety: EN 61010-1:2001 |
|
Working conditions |
|
Temperature range |
from -10 oC to +50 oC (related SPL error ≤ ±0.15 dB) |
| Atmospheric pressure range |
from 65 kPa to 108 kPa (related SPL error ≤ ±0.1 dB) |
| Humidity range |
up to 90 % RH (related SPL error ≤ ±0.05 dB) |
|
Power supply |
|
Battery type |
2 x LR03 (IEC) / AAA (ANSI) alkaline batteries |
| Continuous operating time |
40 hours for 94 dB level,
30 hours for 114 dB level |
| Stand-by period |
around two years (auto switch ON / OFF) |
| Minimal voltage requirements |
2.1 V |
|
Overall weight and dimensions |
|
Weight |
305 grams including batteries |
| Dimensions |
65 x 65 x 70 millimetres |
작성일 : 11-04-22 16:37
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