Bently Nevada 200157-01-05 Accelerometer | 316L Stainless Steel

Product Overview

The 200157-01-05 is a premium piezoelectric accelerometer from Bently Nevada, designed to provide high-accuracy vibration data for machinery protection and diagnostic systems. This transducer is optimized for a wide range of industrial applications, offering a linear response across a broad frequency spectrum. A key advantage of this model is its compact and lightweight design, with a total weight of only 58 g ±2 g, which ensures minimal mass loading on small or thin-walled machine components, preserving the integrity of the vibration signal.

Advanced Monitoring Capabilities

Engineered for precision, the 200157-01-05 delivers a sensitivity of 10.2 mV/(m/s²) at 80 Hz and covers a frequency band from 10 Hz to 10,000 Hz. With a resonant frequency exceeding 20 kHz and a measuring range of ±25 g, it is capable of capturing both low-frequency structural vibrations and high-frequency bearing or gear mesh signatures. Despite its light 58g frame, it maintains exceptional stability with a thermal drift of less than 0.1% per °C and a transverse sensitivity restricted to ≤7%.

Technical Specifications

Mechanical Integrity & Durability

The 200157-01-05 is built to endure the harshest factory floor conditions. The 58g housing is constructed from corrosion-resistant 316L stainless steel and is hermetically sealed to prevent moisture ingress, even in 100% condensing humidity. It features a robust shock limit of 5,000 g peak and can operate in temperatures ranging from -40 °C to +105 °C. The mounting interface uses a 3/8-24 female thread, requiring a torque of 2.7–6.8 N·m to ensure a rigid mechanical connection for high-frequency signal transmission.

Electrical Connectivity & Performance

This accelerometer features a low quiescent current of less than 800 µA and a stable output bias of +2.5 V ±0.23 V. The connector is designed for extreme durability, rated for over 10,000 mating cycles. To maintain signal purity, Bently Nevada recommends a maximum cable length of 10 meters for minimal signal loss, though longer runs are possible with appropriate cabling. Its lightweight 58g profile combined with these electrical traits makes it ideal for permanent installations in power plants, refineries, and paper mills.

Technical FAQs

Q1: How does the 58g weight benefit my monitoring system?
A1: A lighter sensor has a higher mounted resonant frequency and reduces "mass loading," which can artificially dampen the actual vibration of smaller or high-speed machine parts.

Q2: Is this sensor suitable for chemical processing environments?
A2: Yes, the use of 316L stainless steel and hermetic sealing makes the 200157-01-05 highly resistant to corrosive chemicals and industrial fluids.

Q3: What mounting torque should be used?
A3: For optimal high-frequency response, the sensor should be torqued between 2.7 and 6.8 N·m. Under-torquing can lead to signal distortion at high frequencies.