Bently Nevada 31148071 Prox Sensor - Vib/Shaft Meas, Rot Eqpt, Rugged/High Res

1. Product Overview and Design Features​

The Bently Nevada 31148071 is a high-performance vibration monitoring transducer designed for critical machinery protection in industrial automation systems. This robust device incorporates advanced seismic sensing technology to accurately measure casing vibration in rotating equipment such as turbines, compressors, and pumps. Featuring a durable stainless steel housing with IP67 environmental protection, the transducer ensures reliable operation in extreme conditions including exposure to moisture, corrosive chemicals, and temperature fluctuations from -50°C to +120°C. The unit utilizes a precision-engineered internal piezoelectric accelerometer that generates a proportional 4-20 mA output signal relative to vibration velocity. Its integral electronics include signal conditioning circuitry that provides excellent noise immunity and stable performance in electrically noisy industrial environments. The transducer's two-wire loop-powered design simplifies installation while maintaining compatibility with most control systems. These engineering features make the 31148071 particularly suitable for continuous monitoring applications where early detection of mechanical faults is essential for preventing catastrophic equipment failures in energy, oil and gas, and manufacturing industries.

​2. Technical Specifications and Application Advantages​

This vibration transducer delivers exceptional technical performance with a frequency response range of 4-1000 Hz and a measurement range of 0-100 mm/s (0-4 in/s) velocity. Key parameters include a sensitivity of 4 mA/mm/s, overall accuracy of ±2% full scale, and a maximum output of 22 mA for fault indication. The device operates on a 12-30 VDC power supply with reverse polarity protection and features a 1000 Vrms transient protection for enhanced reliability. Its rugged construction meets API 670 standards for machinery protection systems while providing linear output within ±1% across the operating temperature range. The transducer's integrated electronics provide built-in diagnostics including open circuit detection and overload protection. These specifications translate to significant application advantages: reduced maintenance costs through early fault detection, minimized unplanned downtime with continuous monitoring capability, and improved safety through reliable machinery protection. The device's compatibility with existing control systems allows for seamless integration into both new installations and retrofit projects across power generation, petrochemical, and heavy industrial applications where equipment reliability directly impacts operational continuity and safety compliance.

​3. System Integration and Functional Benefits​

The 31148071 offers comprehensive functional benefits through its sophisticated integration capabilities with Bently Nevada's monitoring systems and third-party PLC/DCS platforms. The transducer's velocity output signal enables direct connection to control systems for real-time vibration monitoring, while its rugged design ensures consistent performance in high-vibration environments. Key functional advantages include automatic fault reporting through scaled output signals, simplified calibration via external potentiometers, and long-term stability requiring minimal maintenance. The device's broad frequency coverage captures essential mechanical faults including imbalance, misalignment, and rolling element bearing defects. These capabilities provide plants with reduced insurance premiums through certified safety performance, compliance with international machinery protection standards (ISO 10816), and enhanced operational intelligence through trendable vibration data. The transducer's robust construction ensures reliable operation throughout its 5-year service interval, making it an ideal solution for critical applications where measurement reliability directly impacts plant safety and profitability.

Packaging & Shipping

Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.

With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are

perfectly.

we are major in PLC,Sensors,HIM,Transmitters.

Best Supply Brands As Following:1)Bently nevada.2)+GF+.3)Rosemount.4)ABB.5)Allen-Bradley.6)Foxobro.Good working environment, perfect team, sincere cooperation →→ Achieve u and our success !!!