1.可由手搖發電機提供電源，亦可使用電池
2.手搖發電機10秒以上，可提供短暫待測電量
3.測量範圍：30~130db(分貝)
4.符合國際規範IEC61672 Class2
5.A&C頻率加權測量選擇
6.時間加權選擇，快&慢選擇
7.自動換檔及手動換檔選擇
8.峰值鎖定及記錄測量中之最大/最小值
9.RS-232/USB連接介面及AC電壓信號輸出
10.尺寸：240×69×38mm
11.專利設計
FEATURES
Hybrid power, power supply from green power ( handy generator ) or battery. If power source come from " Green power ", battery is no need. Operate the generator 30 seconds will offer several minutes energy typically.
Main functions are designed to meet IEC 61672 class 2.
A & C weighting networks comply with standards.
0.5" standard microphone head.
Time weighting (Fast & Slow) dynamic characteristic modes.
RS232/USB coamputer interface.
Auto range & Manual range selection.
Available for external calibration adjustment.
Condenser microphone for high accuracy & long-term stability.
Memory function to store the Max. & Min. value.
Hold and Peak Hold functions.
Operation key used push button.
LCD display for low power consumption & clear read-out even in bright ambient light condition.
Using the durable, long-lasting components, including a strong, light weight ABS-plastic housing case.
Small and light weight design allow one hand operation.
Display
40 mm x 32 mm LCD (Liquid crystal display).
Function
dB ( A & C frequency weighting )
Time weighting ( Fast, Slow )
Hold, Memory (Max. & Min. )
Peak hold, RS232 output
Measurement Range
30 to 130 dB.
Resolution
0.1 dB.
Accuracy(23± 5 ℃)
* Meet IEC 61672 class 2, tested under Input signal level on 94 dB & frequency range from 31.5 Hz to 8 k Hz.
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.
Measurement Frequency
31.5 Hz to 8,000 Hz.
Microphone type
Electric condenser microphone.
Size of microphone
Out size, 12.7 mm Dia. ( 0.5 inch).
Weighting Network
Characteristics of A & C.
Time weighting (Fast, Slow)
Fast - t= 200 ms
Slow - t = 500 ms,
* "Fast" range is simulated the human ear response time.
* "Slow" range is easy to get the avg. values of vibration sound level.
* The "Fast" & "Slow" response range are designed to meet IEC 61672 class 2 requirement.
Calibrator
B & K (Bruel & kjaer), multi-fuction acoustic calibrator, model : 4226.
Output Signal
Serial data interface.
Output terminal
* Connect the optional RS232 cable UPCB-02 will get the RS232 plug ( D9 plug )..
* Connect the optional USB cable USB-01 will get the USB plug.
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.
