1.頻率/時間加權符合IEC 61672 class 2標準
2.內建外部VR校正，易於校正
3.自動關機/手動關機設定
4.可設定噪音劑量標準級別
5.採用高精度/長期穩定性電容式噪音麥克風
6.附攜帶式帆布儀器袋
7.附外接夾式噪音麥克風
8.綠色背光顯示
9.電源：1.5V 4號電池*6
10.記憶功能：最大/最小/讀值鎖定
☆規格：
1.快/慢-時間加權：
Fast-t快加權= 125ms，人耳模擬加權
Slow-t慢加權= 1s，振動聲平均值
2.SPL音壓位準量測：30.0-130.0dB
3.Dose噪音劑量量測：70.0～130.0dB
Threshold Level(Thr)自定位準模式：
70～90dB，調整解析度1dB
Criterion Level(Crit)標準位準模式：
80、84、85、90dB
Exchange Rat對比模式：
3, 4, 5 or 6 dB
FEATURES
Personal sound exposure meet IEC 61252
Frequency and Time weighting are designed to meet IEC 61672 class 2.
A & C weighting networks comply with standards.
LCD is dot-matrix with backlight and easy reading.
Combination Dose meter, Data-logger and Sound level meter.
0.5" standard microphone head.
Time weighting (Fast & Slow) dynamic characteristic modes.
Build External calibration VR.
User-defined measurement configurations. Selectable Criterion Level,
Exchange Rate, Threshold, Frequency Weighting, and Response Time setting.
Condenser microphone for high accuracy & long-term stability.
Memory function to store the Max. & Min. value.
Hold functions.
Real time Datalogger Records device of internal memory device (EEPROM) and an external memory device ( SD memory card ) ,Real time 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 second ).
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 download 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.
Can default auto power off or manual power off.
Noise Dose %，SPL measurements.
Microcomputer circuit, high accuracy.
Power by UM4/AAA ( 1.5 V ) x 6 batteries or DC 9V adapter.
RS232/USB PC COMPUTER
Heavy duty & compact housing case.
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
Dose：test noise exposure
Measurement Range
SPL：Auto 30 - 130 dB.
Dose：70～130dB
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 " 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.
