噪音声级记录器MSL-388SD是专业为记录噪音声级数据的记录型噪音声级计,不仅可以测量噪音声级还可以记录噪音数据,广泛用于噪音测量记录应用。
噪音声级记录器MSL-388SD特
*频率和时间加权的设计符合IEC61672-2。
*标准加权网络符合标准。
* LCD具有点阵背光，易于阅读。
*数据记录器和声级计。
* 0.5“标准传声器探头。
*时间加权（快-慢）动态特性模式。
*高精度、长期稳定的电容传声器。
*存储和最小值的内存。
*持有功能。
*外部记录装置 *手动数据可用（设定采样时间为0秒）。
*创新设计，易于操作，计算机不需要设置额外程序，执行数据采集器，只是把SD卡从表和插入SD卡插入电脑，它可以下载所有测量值和时间信息（年/月/日/小时/分钟/秒）到Excel，然后用户可以自己进行进一步的数据或图形分析。
* SD卡容量：1 GB到16 GB。
*能自动关机或手动关机。
* 4-20mA模拟信号输出。
*微机电路，精度高。
* UM4 / AAA电源（1.5 V）x 6电池或直流9V适配器。
* PC机接口。
*重型及小型外壳。

噪音声级记录器MSL-388SD规格参数

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.