噪音聲級記錄器MSL-388SD特
*頻率和時間加權(quán)的設計符合IEC61672-2。
*標準加權(quán)網(wǎng)絡符合標準。
* LCD具有點陣背光，易于閱讀。
*數(shù)據(jù)記錄器和聲級計。
* 0.5“標準傳聲器探頭。
*時間加權(quán)（快-慢）動態(tài)特性模式。
*高精度、長期穩(wěn)定的電容傳聲器。
*存儲和最小值的內(nèi)存。
*持有功能。
*外部記錄裝置
*存儲設備（SD存儲卡），實時Datalogger，內(nèi)置時鐘和日歷，實時數(shù)據(jù)記錄器，采樣時間設置，從5、10、30、60、120、300、1800、3600秒。
*手動數(shù)據(jù)可用（設定采樣時間為0秒）。*創(chuàng)新設計，易于操作，計算機不需要設置額外程序，執(zhí)行數(shù)據(jù)采集器，只是把SD卡從表和插入SD卡插入電腦，它可以下載所有測量值和時間信息（年/月/日/小時/分鐘/秒）到Excel，然后用戶可以自己進行進一步的數(shù)據(jù)或圖形分析。
* SD卡容量：1 GB到16 GB。
*能自動關(guān)機或手動關(guān)機。
* 4-20mA模擬信號輸出。
*微機電路，精度高。
* UM4 / AAA電源（1.5 V）x 6電池或直流9V適配器。
* PC機接口。
*重型及小型外殼。
噪音聲級記錄器MSL-388SD規(guī)格參數(shù)
| Circuit | Custom one-chip of microprocessor LSI circuit. |
| Display | LCD size : 50 mm x 30 mm LCD with green backlight ( ON/OFF ). |
| Measurement Type | SPL : Sound pressure level |
| Measurement Range | SPL：30-80,50-100,80-130 , Auto 30 - 130 dB. |
| Resolution | 0.1 dB. |
| Function | dB ( A & C frequency weighting ), Time weighting ( Fast, Slow ), Data hold Record ( Max., Min. ). |
| Accuracy (23 ± 5 ℃) | Characteristics of " A " frequency weighting network meet IEC 61672 class 2. Under 94 dB input signal, the accuracy are : |
| 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. |
| Data hold | To freeze the measurement value. |
| Time weighting (FAST &SLOW) | Fast - t = 125 ms * "Fast" range is simulated the human ear response time weighting. Slow - t = 1 s * "Slow" range is easy to get the average values of vibration sound level. | |
| Function selector SPL | range： 30-80dB, 50-100dB, 80-130dB Auto range：30～130dB. | |
| Frequency | 31.5 to 8,000 Hz. | |
| Microphone type | Electric condenser microphone. | |
| Microphone size | Out size, 12.7 mm DIA. ( 1/2 inch). | |
| Calibration VR | Build in external calibration ( key ), easy to calibrate on 94 dB level by key button. * Calibrated via external SOUND CALIBRATOR ( SC-941, SC-942, optional ). | |
| Calibrator | B & K (Bruel & kjaer), MULTIFUNCTION ACOUSTIC CALIBRATOR Type 4226. | |
| Datalogger Sampling Time Setting range | Auto Manual | 5,10,30,60,120,300,600,1800, 3600 seconds @ Sampling time can set to 1 second, but memory data may loss. Push the data logger button once will save data one time. @ Set the sampling time to 0 second. |
| Memory device | external memory device ( AC Adapter only ) : SD memory card. 1 GB to 16 GB. | |
| Advanced setting | * Set clock time ( Year/Month/Date,Hour/Minute/ Second ) * Set sampling time * Auto power OFF management * Set beep Sound ON/OFF * Decimal point of SD card setting * SD memory card Format | |
| Over Indication | Show " ". | |
| Data Hold | Freeze the display reading. | |
| Memory Recall | Maximum & Minimum value. | |
| Sampling Time of Display | Approx. 1 second. | |
| Data Output | RS 232/USB PC computer interface. * Connect the optional RS232 cable, UPCB-02 will get the RS232 plug. * Connect the optional USB cable, USB-01 will get the USB plug. | |
| Power off | Auto shut off saves battery life or manual off by push button. | |
| Operating Temperature | 0 to 50 ℃. | |
| Operating Humidity | Less than 85% R.H. | |
| Power Supply | * Alkaline or heavy duty DC 1.5 V battery ( UM4, AAA ) x 6 PCs, or equivalent. * DC 9V adapter input. ( AC/DC power adapter is optional ). | |
| Power Current | Normal operation ( w/o SD card save data and LCD Backlight is OFF) : Approx. DC 16 mA. | |
| When SD card save the data but and LCD Backlight is OFF) : Approx. DC 16 mA. | ||
| * If LCD backlight on, the power consumption will increase approx. DC 8 mA. | ||
| Weight | 250 g/ 0.55 LB. (without battery) | |
| Dimension | 132 x 80 x 32 mm. ( 5.2 x 3.1 x 1.3 inch ). | |
| Accessories Included | * Instruction manual 1 PC * Plug of 4 to 20 mA output ( SKT-AS385 )… 1 PC * Micophone with clip 1 PC | |
| Optional Accessories | * Sound calibrator ( 94 dB ), SC-941. * Sound calibrator ( 94/114 dB ), SC-942. * Sound wind shield ball, SB-01 * SD Card ( 4 GB ) * USB cable, USB-01. * RS232 cable, UPCB-02. * Data Acquisition software, SW-E2005. * AC to DC 9V adapter. | |
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