Bently Nevada 74712-03-10-02-00 Seismoprobe Velocity Transducers

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Product Overview 

The Bently Nevada 74712-03-10-02-00 is a high-temperature, two-wire Seismoprobe® velocity transducer designed to measure absolute (relative to free space) vibration of bearing housings, casings, and structural components on rotating and reciprocating machinery . It is the high-temperature version of the standard 9200 velocity sensor, extending the maximum operating temperature. This transducer uses proven moving-coil technology to generate an output voltage directly proportional to the vibration velocity of the target surface . Unlike accelerometer-based sensors that integrate electronic circuits, the moving-coil design has reduced sensitivity to shock excitation, making it an excellent choice for applications with transient or impact events . Additionally, because moving-coil sensors are self-generating and require no external power, they are convenient for both permanent monitoring installations and portable periodic measurement applications .

Key Features

➙High-Temperature Operation–Rated for continuous operation from -29°C to +204°C (-20°F to +400°F) , making it suitable for harsh thermal environments such as gas turbines, steam turbines, and process compressors where standard sensors would fail .

➙Moving-Coil Technology–Uses a self-generating moving-coil sensing element that requires no external power source, simplifying installation and making it ideal for portable measurement applications .

➙Low Shock Sensitivity–Unlike integrated accelerometer-based velocity sensors, the moving-coil design is less sensitive to shock and impact excitation, providing more reliable measurements in applications with transient events .

➙Low-Frequency Response–The 03 option provides a minimum operating frequency of 4.5 Hz (270 cpm) , enabling accurate vibration monitoring on slow-speed machinery such as cooling tower fans (100-300 rpm) and air-cooled heat exchangers .

➙High Sensitivity–Provides a nominal sensitivity of 20 mV/mm/s (500 mV/in/s) ±5% , generating a strong signal proportional to vibration velocity for accurate machinery health assessment .

➙Robust Mechanical Design–Constructed to withstand harsh industrial environments with excellent resistance to contamination, oil, and moisture. The transducer can survive mechanical shocks up to 50 g (peak) along its non-sensitive transverse axis .

Technical Specifications

Transducer Mounting Angle: 03 - 90 ±2.5, 4.5 Hz (270 cpm)

Mounting Base: 10 - Circular; M10X1 stud

Connector: 02 - Top Mount

Agency Approval: 00 - No Approvals

Sensitivity: 20 mV/mm/s (500 mV/in/s) ±5%

Dynamic Range (Displacement): 2.54 mm (0.100 inches) peak-to-peak

Shock Resistance: 50 g peak acceleration along the non-sensitive (transverse) axis

Transverse Sensitivity: 10% or less of axial sensitivity

Applications

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       Email : sales6@askplc.com

     Whatsapp : +86 17359287459