Features:
- Passive two‑wire design; outputs voltage directly proportional to vibration velocity; requires no external power; less sensitive to impact excitation.
- Measures bearing housing, casing, or structural vibration relative to free space; minimum operating frequency 4.5 Hz (270 cpm).
- M10×1 stud mounting (circular base); top‑mount connector; 90° ±2.5° mounting angle; no agency approvals.
The 74712-03-10-02-00 uses moving‑coil technology, a mature and reliable method for vibration measurement. Inside the transducer, a coil moves within a magnetic field relative to the housing. This motion generates a voltage that is directly proportional to the vibration velocity. Because the transducer has no built‑in electronics, it requires no external power supply – a significant advantage for portable measurement applications and for installations where running power cables is difficult. The output signal is a low‑impedance voltage that can be sent over long cables without significant degradation.
The 74712-03-10-02-00 is specifically designed to measure absolute vibration – that is, the motion of a bearing housing, machine casing, or structural element relative to free space (inertial reference). This is distinct from relative vibration measurements (e.g., shaft vibration measured by proximity probes). Absolute velocity measurement is essential for assessing the overall dynamic behavior of machine casings, foundations, and support structures.
The 74712-03-10-02-00 is built for demanding industrial environments. Its mechanical construction is rated for high‑temperature operation (specific temperature range not provided in this document, but the "high‑temperature" designation indicates suitability for steam turbine casings, gas turbine exhausts, and other hot spots). The mounting base is circular with an M10×1 stud – a metric thread common in European and Asian machinery. The connector is top‑mount, allowing cable routing directly upward from the transducer.
The 74712-03-10-02-00 Bently Nevada Transducer may still be available for purchase and support from Apter Power beyond
End-Of-Life (EOL)by the manufacturer (OEM).
Bently Nevada 74712-03-10-02-00 Transducer Manuals,
Datasheets,Drivers,Link
Important Notice:Other accessories,manuals,cables,calibration data,software,etc.are not
included with this equipment unless listed in the above stock item description.All prices are
shown in USD.
Bently Nevada 74712-03-10-02-00 Transducer Specs
General
- Manufacturer GE /Bently Nevada
- Model 74712-03-10-02-00
- Condition New Original ready stock
- Product Family
9200-01-01-10-00,9200-01-05-10-00
Important Notice:Other accessories,manuals,cables,calibration data,software,etc.are not
included with this equipment unless listed in the above stock item description.All prices are
shown in USD.
- High-Temperature Environments: Particularly suitable for areas with extremely high operating temperatures (up to 204°C), such as steam turbines, thermal network pumps, or high-temperature fans.
- Industrial Applications: Widely used in power plants, petrochemical plants, and various heavy industrial facilities requiring monitoring of equipment imbalance, misalignment, or mechanical looseness.
- Advantages: Due to its moving-coil technology, it is less susceptible to shock-induced interference than solid-state accelerometers, and because it does not require external power, it is also commonly used for portable measurements.
- Vibration Monitoring: Outputs a DC voltage signal proportional to the vibration velocity (standard sensitivity 20 mV/mm/s) to determine the machine's health status.
- Early Failure Warning: Monitors changes in absolute vibration to help diagnose common faults such as rotor imbalance and misalignment.
- Trip Protection: The signal can be connected to a Bently Nevada 3500 or 3300 monitoring system to trigger an alarm or automatic shutdown interlock when vibration exceeds safety limits..
- Mounting Angle (03): Represents the sensor's installation direction and minimum operating frequency limit (usually vertical, horizontal, or at a specific angle; installation must strictly adhere to the calibrated angle to ensure accuracy).
- Upgrade Recommendation: When upgrading from an existing system, note that the 74712 is a moving-coil design. For most modern installation environments, Bently Nevada recommends considering an upgrade to the Velomitor series, which utilizes solid-state technology, offering a wider frequency response and better long-term stability.