SL-4035SD 記錄型數字噪音計（SD卡

產品特性：
* 測量範圍：30 dB to 130 dB.
* 測量項目：SPL, Leq.
* 分辨率：0.1 dB
* 頻率範圍：31.5 Hz to 8 KHz
* 頻率加權：A and C
* 時間加權：Fast and Slow
* 數值鎖定：凍結顯示屏顯示數值
* 讀取：最大值最小值
* SD 卡：SD 記憶卡，1 GB~16 GB
功能規格：
1. 日期時間設定( 年/ 月/ 日/ 小時/ 分鐘)
2. SD 卡小數點設置
3. 自動關機設置
4. 嗶嗶聲音提示設置開關ON/OFF
5. 採用時間設置
6. SD 記憶卡格式化
* 24 小時Leq 遇到測量時間設定
* 麥克風類型：1/2 英寸電容式麥克

頻率加權網絡特點：
A 加權：將實際強度噪音轉換為人耳感受噪音強度值，用於環保及與人類聽覺相關之活動
C 加權：接近FLAT 響應
實際線性強度噪音，用於品管/ 實驗/ 試驗等

精度：(23 ± 5°C)
型號：
SL-4035SD
31.5Hz ± 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   ± 5.1 dB

FEATURES

• Frequency and Time weighting are designed to meet IEC 61672 class 2.

• The meter with programmable integrating time provides precise linearity over a wide range (100dB) and displays Leq and SPL measurements.

• A & C weighting networks comply with standards.

• 0.5" standard microphone head.

• Time weighting (Fast & Slow) dynamic characteristic modes.

• Build External calibration VR.

• Auto range & Manual range selection.

• Condenser microphone for high accuracy & long-term stability

• Memory function to store the Max. & Min. value.

• Hold and Peak Hold functions.

• Real time SD memory card Datalogger, it Built-in Clock and Calendar, real time data recorder , sampling time set from 1 second to 3600 seconds.

• Manual datalogger is available ( set the sampling time to 0 ), during execute the manual datalogger function, it can set the different position ( location ) No. ( position 1 to position 99 ).

• Innovation and easy operation, computer is not need to setup extra software, after execute datalogger, just take away the SD card from the meter and plug in the SD card into the computer, it can down load the all the measured value with the time information ( year/month/date/ hour/minute/second ) to the Excel directly, then user can make the further data or graphic analysis by themselves.

• SD card capacity : 1 GB to 16 GB.

• LCD with green light backlight, easy reading.

• Can default auto power off or manual power off.

• Data hold, record max. and min. reading.

• Microcomputer circuit, high accuracy.

• Power by UM3/AA ( 1.5 V ) x 6 batteries or DC 9V adapter.

• RS232/USB PC COMPUTER interface.

• Heavy duty & compact housing case.

• Leq, SEL, SPL, MAX-L, and MIN-L measurements..

一般規格

Circuit

• Custom one-chip of microprocessor LSI circuit.

Display

• LCD size : 52 mm x 32 mm

• LCD with green backlight ( ON/OFF ).

Measurement Type

• SPL : Sound pressure level,

• Leq : Equivalent Continuous Noise Level.

Measurement Range

• 30 to 130 dB.

Resolution

• 0.1 dB.

Function

• dB ( A & C frequency weighting )

• Time weighting ( Fast, Slow )

• Peak hold

• Data hold Record ( Max., Min. )

Accuracy(23± 5 ℃)

• Characteristics of " A " frequenc weighting network meet IEC 61672 class 2.
  Under 94 dB input signal, the accuracy are :

• 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

• Remark : The above spec. are tested under the environment RF Field Strength less than 3 V/M & frequency less than 30 MHz only.