THÔNG SỐ KỸ THUẬT MÁY ĐO ĐỘ ỒN ÂM THANH LUTRON SL-4012 (30~130 dB)

*** Các sản phẩm tương đương cùng dòng:
| SPECIFICATIONS | |
| Display | 52 mm x 32 mm LCD (Liquid Crystal Display), 5 digits. |
| Function | dB (A & C frequency weighting), Time weighting(Fast, Slow), Hold, Memory ( max. & min. ), Peak hold, AC & RS232 output. |
| Measurement Range | 30 – 130 dB. |
| Resolution | 0.1 dB. |
| Accuracy (23 ± 5 ℃) | Frequency weighting meet IEC 61672 class 2, calibrating input signal on 94 dB(31.5 Hz to 8 kHz), then the accuracy of frequency weighting is specified as following: 31.5 Hz – ± 3.5 dB, 63 Hz – ± 2.5 dB, 125 Hz – ± 2.0 dB 250 Hz – ± 1.9 dB, 500 Hz – ± 1.9 dB, 1 kHz – ± 1.4 dB 2 kHz – ± 2.6 dB, 4 kHz – ± 3.6 dB, 8 kHz – ± 5.6 dB |
| Frequency Weighting Network | Characteristics of A & C. |
| A weighting – The characteristic is simulated as “Human Ear Listing” response. Typical, if making the environmental sound level measurement, always select to A weighting. |
|
| C weighting – The characteristic is near the “FLAT” response. Typical, it is suitable for checking the noise of machinery (Q.C. check) & knowing the sound pressure level of the tested equipment. |
|
| Frequency | 31.5 Hz to 8,000 Hz. |
| Calibrator | B & K (Bruel & kjaer), multi-fuction acoustic calibrator, model : 4226. |
| Microphone type | Electric condenser microphone. |
| Size of microphone | 1/2 inch standard size. |
| Range selector | Auto range : 30 to 130 dB. |
| Manual range : 3 range, 30 to 80 dB, 50 to 100 dB, 80 to 130 dB, 50 dB on each step, with over & under range indicating. | |
| Time Weighting (Fast & Slow) | Fast – t= 200 ms, Slow – t = 500 ms,
* “Fast” range is simulated the human ear response time weighting. * The “Fast” & “Slow” time weighting range are designed to IEC 61672 class 2 requirement. |
| Output Signal | * AC output – AC 0.5 Vrms corresponding to each range step. Output impedance – 600 ohm. * RS232 output. |
| Output terminal | Terminal 1 : RS232 computer interface terminal. Terminal 2 : AC output terminal. * Terminal socket size : 3.5 mm dia. phone socket. |
| Calibration VR | Build in external calibration VR, easy to calibrate on 94 dB level by screw driver. |
| Operating Temp. | 0 ℃ to 50 ℃ ( 32℉ to 122℉ ). |
| Operating Humidity | Less than 80% RH. |
| Power Supply | 006P DC 9V battery ( Alkaline or heavy duty type ). |
| Power Consumption | Approx. DC 6mA. |
| Dimension | 268 x 68 x 29 mm ( 10.6 x 2.7 x 1.1 inch). |
| Weight | 295 g/0.65 LB. |
| Standard Accessories | Instruction Manual ………………………………………..1 PC. |
| Optional | Sound Calibrator, model : SC-941 ( 94 dB ). SC-942 ( 94dB, 114 dB ). Carrying case : CA-06 Wind shield ball, SB-01 RS232 cable, Model : UPCB-02 USB cable, Model : USB-01 Application software, Model : SW-U801-WIN |
MÔ TẢ MÁY ĐO ĐỘ ỒN ÂM THANH LUTRON SL-4012 (30~130 dB)
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