描述
技術參數：
| 傳感器 | 1/2英寸電容式麥克風 |
| 測量範圍 | 30~130dB |
| 測量精度 | ±1.5dB |
| 頻率響應 | 31.5Hz~8.5KHz |
| 頻率加權特性 | A/C |
| AC\DC信號輸出 | 有 |
| 低電提示 | 有 |
| 超載提示 | 有 |
| 解析度 | 0.1dB |
| 動態特性選擇 | Fast/Slow |
| 最大值鎖定 | 有 |
包裝規格
| 電源 | 9V電池 |
| 產品淨重 | 225g |
| 產品尺寸 | 221*66*33mm |
Features:
| This unit was designed according to | the IEC651 TYPE & ANSIS1.4 TYPE2 for sound level meters |
| Instantancous | sound measure function |
| Measurement range: | 30-130 decibel |
| With two equivalent weighted | sound pressure levels A and C |
| characteristic modes | Fast & Slow dynamic |
| AC and DC signed output for | frequency analyzer level recorder, FFT analyzer, graphic recorder etc. |
Specifications:
| Microphone | 1/2 inch Electret Condenser |
| Measuring Leve | 30~130 dBA 35~130 dBC |
| Accuracy | ±1.5dB |
| Frequency Range | 31.5Hz~8.5KHz |
| Standard According to | IEC651 TYPE 2 & ANSIS1.4 TYPE 2 |
| Frequency Weighting | A & C |
| Level Range Bar Graph | √ |
| Range Selection | 4 modes |
| Range Over Indication | √ |
| Battery Indication | √ |
| Backlight Displa | √ |
| Max & Min Hold Function | √ |
| Digit & Resolution | 5 digits & 0.1dB Display: 0.5 secretary |
| Bar graph: | 50 dB scale at 1 dB step fro monitoring |
| Level ranges: | 30-80dB; 50-100dB; 60-110 dB; 80-130dB |
| Over indicate over range: | Under indicate less than lower limit for the range |
| AC output: | 0.707 Vrms at FS output impendance approx 600 ohm |
| DC output: | 10mV / dB output impedance approx 100 ohm |
| Time Weighting | Fast / Slow |
| Max: Maximum hold | √ |
| Auto Power Off | √ |
| External power supply | √ |
| Sampling Frequency | 2 times / sec |
| Self calibration time: | 10 secs(every turn on) |
| Operating condition | Temperature :0-40℃ ; Humidity: 10% to 80%RH |
| Storage Condition | Temperature: -10 to 60℃ ; Humidity: 10% to 70% RH |
Diagram and LCD Description：
 |
1. Electret Condenser Microphone 2. LCD Display 3. Power Switch 4. Level range control switch: 30dB~80dB 50dB~100dB 60dB~110dB 80dB~130dB 5. Maximum value hold swithc. (MAX) 6. Frequency weighting select switch A: A weighting for general sound level measurements. C; C-weighting for checking the low frequency content of noise 7. Time weighting select switch Fast: For normal measurements Slow: For checking average level of fluctuating noise 8. AC output terminal: 0.707 Vrms Corresponding to each range step. 9. DC output terminal: output 10mV / dB 10. Calibration control 11. External DC 60V power supply terminal 12. Battery Door 13. Tripod mounting screw 14. Windscreen |
 |
LCD Display: 1. Level range 2. Instantanceous sound pressure level 3. Low battery mark. 4. Maximum value is held during measuring 5. Measure Value 6. Measure Unit 7. Frequency weighting A/C 8. Level range Bar graph 9. Rang over 10. Slow time weighting 11. Fast time weighting 12. Range under |
Calibration Procedures:
Pls use a Standard Acoustic Calibrator
| 1. Make the setting: Display: SPL(dBA) Time/Weighting: Fast/Level range: 60~110dB /Measurement mode: MAX function disable |
| 2. Insert the microphone carefully into to the 1/2 inch hole of the Calibration |
| 3. Turn on the Calibrator and adjust the Protentiom eter in side the battery compartment of the unit (shown in the diagram 1), The level of the units ( show in the diagram 1), The level display will indicate the desired level(94.0) our products are all well calibrated before shipment (Recommended recalibration cycle; 1 year ) |
Operation guide:
| 1. Turn on power ( pls install battery first before power on) |
| 2. Select the desired response and weighting, also select desired rang. |
| 3. If weighting for general mosie sound level, pls select dBA. |
| 4. If the sound source consists of the short brusts of only catching sound peak, set response to FAST, to measuring average sound level. use the slow setting |
| 5. When MAX mode is chosen, The instrment captures and hold the maximum noise level. |
