330780-90-05工控備件
結構振動
說明Bently Nevada Velomitor壓電速度傳感器設計用于測量絕對（相對于自由空間）軸承箱、殼體或結構振動。330500是一種專用壓電加速度計，在固態設計中集成了嵌入式集成電子器件。由于330500采用了固態電子器件，并且沒有移動部件，因此它不會受到機械退化和磨損的影響，并且可以垂直、水平或以任何其他角度安裝傳感器放置測量外殼如果您正在測量機器外殼以確定放置傳感器的位置，請考慮您想要獲得的測量類型。大多數常見的機器故障，如不平衡或未對準，都源于轉子，通常會導致轉子振動增加。如果集成330500 Velomitor輸出以測量位移，則來自干擾和傳感器電路的電噪聲會被放大。噪聲會降低330500換能器的性能，并產生不準確的位移數據。為了獲得高質量的數據，將傳感器放置在能夠通過軸承箱或機殼最好地檢測機器振動的位置。選擇一個位置、接地和屏蔽，使振幅和頻率響應最大化，并減少不代表實際機器振動的數據。Bently Nevada提供工程服務，以確定安裝傳感器的最佳位置。如需幫助，請聯系Bently Nevada客戶服務或訪問Bently.com。文件：141632 Rev.N 330500 Velomitor壓電速度傳感器數據表Bently Nevada機械狀態監測規范參數規定為+20°C至+30°C（+68°F至+86°F），頻率為100 Hz，除非另有說明。在規定范圍外操作傳感器可能導致錯誤讀數或機器監控丟失。電靈敏度3.94mV/mm/s（100 mV/in/s）±5%。
頻率響應
4.5 Hz至5 kHz（270 cpm至300 kcpm）±3.0 dB。6.0 Hz至2.5 kHz（360 cpm至150 kcpm）±0.9 dB。在工作溫度范圍內，溫度靈敏度通常為-14%至+7.5%。速度范圍1270 mm/s（50 in/s）峰值。橫向靈敏度小于靈敏度的5%。振幅線性度±2%至152 mm/s（6 in/s）峰值。安裝諧振頻率大于12 kHz。輸出偏置電壓-12±3.0 VDC，參考引腳A溫度過高。動態輸出阻抗小于2400? 寬帶噪聲本底（4.5 Hz至5 kHz）0.004 mm/s（160μin/s）rms，標稱接地外殼隔離電纜最大長度305米（1000英尺），部件號02173006，無信號衰減。環境限制工作溫度范圍-55°C至1121°C（-67°F至1250°F）。沖擊生存能力5000 g峰值，最大相對濕度100%非浸沒；箱子是密封的。基本應變靈敏度0.005 in/s/μ應變。磁場敏感性<51μin/s/高斯（50高斯，50-60Hz）。典型體重142克（5.0盎司）。直徑25.3 mm（0.995英寸）。高度63.2 mm（2.49英寸）。外殼材料316L不銹鋼。連接器2針Mil-C-5015氣密密封，316L不銹鋼外殼。安裝扭矩最大32-46 kg cm（24-40 in-lb）極性當傳感器殼體朝連接器移動時，針腳A相對于針腳B變為正。
structural vibration
Explain that Bently Nevada Velomitor piezoelectric velocity sensors are designed to measure absolute (relative to free space) bearing housing, housing, or structural vibration. The 330500 is a special piezoelectric accelerometer with embedded integrated electronic devices integrated in the solid-state design. Since the 330,500 uses solid state electronic devices and has no moving parts, it will not be affected by mechanical degradation and wear, and can be installed vertically, horizontally or at any other angle to place the measurement housing If you are measuring the machine housing to determine the location of the sensor, please consider the type of measurement you want to obtain. Most common machine failures, such as imbalance or misalignment, originate in the rotor and usually result in increased rotor vibration. If the 330,500 Velomitor output is integrated to measure displacement, electrical noise from the interference and sensor circuits will be amplified. Noise will degrade the performance of the 330500 transducer and produce inaccurate displacement data. In order to obtain high-quality data, place the sensor at the position where the machine vibration can be best detected through the bearing housing or casing. Select a location, ground, and shield to maximize amplitude and frequency response and reduce data that does not represent actual machine vibration. Bently Nevada provides engineering services to determine the best location to install the sensor. For assistance, contact Bently Nevada Customer Service or visit Bently com。 Document: 141632 Rev. N 330500 Velomitor Piezoelectric Speed Sensor Data Sheet Bently Nevada Mechanical Condition Monitoring Specification The parameters are specified as+20 ° C to+30 ° C (+68 ° F to+86 ° F), and the frequency is 100 Hz, unless otherwise specified. Operating the sensor outside the specified range may result in incorrect readings or loss of machine monitoring. Electrical sensitivity 3.94mV/mm/s (100 mV/in/s) ± 5%.
frequency response
4.5 Hz to 5 kHz (270 cpm to 300 kcpm) ± 3.0 dB. 6.0 Hz to 2.5 kHz (360 cpm to 150 kcpm) ± 0.9 dB. In the operating temperature range, the temperature sensitivity is usually - 14% to+7.5%. Speed range 1270 mm/s (50 in/s) peak. The transverse sensitivity is less than 5% of the sensitivity. Amplitude linearity ± 2% to 152 mm/s (6 in/s) peak. The installation resonant frequency is greater than 12 kHz. The output bias voltage is - 12 ± 3.0 VDC, and the temperature of reference pin A is too high. The dynamic output impedance is less than 2400 ? broadband noise background (4.5 Hz to 5 kHz) 0.004 mm/s (160 μ In/s) rms, with a maximum length of 305 meters (1000 feet) for a nominal grounded enclosure isolation cable, part number 02173006, and no signal attenuation. Ambient limits Operating temperature range - 55 ° C to 1121 ° C (- 67 ° F to 1250 ° F). Impact survival capacity 5000 g peak, maximum relative humidity 100% non immersion; The box is sealed. Basic strain sensitivity 0.005 in/s/μ strain. Magnetic field sensitivity<51 μ in/s/Gauss (50 Gauss, 50-60Hz). Typical weight 142 g (5.0 oz). 25.3 mm (0.995 inch) diameter. Height 63.2 mm (2.49 in). The shell material is 316L stainless steel. Connector 2-pin Mil-C-5015 hermetically sealed, 316L stainless steel housing. The maximum installation torque is 32-46 kg cm (24-40 in lb) Polarity When the sensor housing moves toward the connector, pin A becomes positive relative to pin B.
