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VM-9515便攜式葉片測(cè)頻儀VM9515
執(zhí)行標(biāo)準(zhǔn): ISO2954-1975 ; GB3824-92
一.用途
VM-9515測(cè)頻儀主要用于測(cè)量汽輪機(jī)葉片的中心頻率和各階振型頻率,為葉片調(diào)頻提供依據(jù)。由于采用了ARM + DSP雙核技術(shù),使得本儀器特別適用于沖擊振動(dòng)的測(cè)量,以便快速提取大型結(jié)構(gòu)件的共振頻率,為結(jié)構(gòu)設(shè)計(jì)提供依據(jù)。
二.特點(diǎn)
1. 4.3寸SHARP真彩LCD,背光照明可調(diào);文字、圖形清晰可辨。
2. USB接口通訊能力。
3. 簡(jiǎn)單、方便的操作界面。
4. 靈活、小巧、輕便的加速度傳感器(不影響測(cè)量葉片頻率的準(zhǔn)確性)。
5. ARM + DSP雙核動(dòng)力,可快速測(cè)量葉片頻率、振動(dòng)頻譜和時(shí)域波形。
6. 儀器具有較寬的頻帶范圍:0.2 Hz~10 kHz(高端可擴(kuò)展)。
7. 儀器內(nèi)裝有大容量鋰電池,使用時(shí)間基本能滿足用戶一天的工作周期。
8. 實(shí)時(shí)快速的動(dòng)態(tài)頻譜分析、振動(dòng)特征分量的頻率和振幅顯示。
9. 配套的動(dòng)態(tài)頻譜分析應(yīng)用軟件,可將頻率數(shù)據(jù)、波形圖、頻譜圖存放在計(jì)算機(jī)使測(cè)量后的查看、分析、編輯和輸出更為方便。
三.主要技術(shù)指標(biāo)及功能
1 振幅測(cè)量范圍:0 ~ 50 m/ss。
2 振幅示值:以百分比(%)表示。
3 頻率測(cè)量范圍和準(zhǔn)確度
■ 整機(jī)頻率范圍由傳感器的頻率特性決定,本機(jī)配套的加速度傳感器頻率范圍為:1Hz ~ 10 kHz。
■ 二次儀表頻率范圍為:0.2 Hz ~ 10 kHz(高端可擴(kuò)展);
■ 測(cè)頻準(zhǔn)確度:
葉片頻率測(cè)量:優(yōu)于±0.02 % 。
葉片頻譜測(cè)量:優(yōu)于±0.05 % 。
4 電源
■ 內(nèi)置可充電鋰電池:4.2V /4200mAh;
■ 電池使用時(shí)間:不少于6小時(shí);
■ 電池充電時(shí)間:約5小時(shí);
■ 充電器:隨機(jī)配5V/5A適配器,充電電流為750mA,可同時(shí)給鋰電池和儀器充、供電;
■ 鋰電池電量百分比顯示,百分比誤差±5%。
5 工作環(huán)境條件和體積重量
■ 傳感器:-20 °C ~ +100 °C,相對(duì)濕度95%;
■ 儀 器:0 °C ~ + 50 °C,相對(duì)濕度85%;
■ 體 積:190mm×131mm×30mm;
■ 重 量:1.3kg。
VM-9515 portable blade frequency measurement instrument VM9515
Executive standard: ISO2954-1975; GB3824-92
Use a
Mainly used for center frequency measurement of turbine blade and the vibration mode frequency VM-9515frequency measuring instrument, provides the basis forblade frequency. Due to the adoption of the ARM + DSPdual core technology, measuring the instrument is particularly applicable to shock and vibration, so that therapid extraction of resonance frequency of large structure, provides the basis for the structure design.
Two
1 4.3 inch SHARP LCD, backlight lighting adjustable; text,graphics legible.
2 USB interface communication ability.
3 simple, convenient operation interface.
The acceleration sensor 4 flexible, compact, lightweight(does not affect the accuracy of frequency measurement of leaf).
5 ARM + DSP dual core power, fast measurement ofblade frequency, vibration frequency and time domain waveform.
6 the instrument has a wide frequency range: 0.2 Hz to 10 kHz (high-end extension).
The 7 instrument equipped with large capacity lithium battery, use the time to meet the basic work cycle of users a day.
Analysis of dynamic spectrum 8, real-time and fastfrequency and amplitude of vibration characteristic component of the display.
Dynamic spectrum of 9 supporting the analysis of application software, the frequency data, waveform,frequency spectrum measurement after stored in the computer to view, analysis, editing and output is more convenient.
Three. The main technical indicators and functions
1 amplitude measurement range: 0 ~ 50 m/ss.
2 amplitude values in percentage (%) said.
The 3 frequency measuring range and accuracy
■ the whole frequency range is determined by thefrequency characteristic of sensor, acceleration sensorfrequency range of the machine: 1Hz ~ 10 kHz.
■ two meter frequency range: 0.2 Hz to 10 kHz (high-endextension);
■ frequency measurement accuracy:
Blade frequency measurement is better than ± 0.02%.
Leaf spectrum measurement: better than 0.05%.
The 4 power supply
■ built in rechargeable lithium battery: 4.2V /4200mAh;
■ battery time: not less than 6 hours;
■ battery charging time: about 5 hours;
■ charger: random distribution of 5V/5A adapter, the charging current of 750mA, at the same time to the lithium battery charging, power supply and equipment;
■ lithium battery percentage, the percentage error of ± 5%.
5 working conditions and volume weight
■ sensors: -20 ° C to +100 ° C, 95% relative humidity;
■ instrument: 0 ° C ~ + 50 ° C, 85% relative humidity;
■ volume: 190mm * 131mm * 30mm;
■ weight: 1.3kg.