Bently Nevada 70M403 Condition Monitoring

Product Overview

The Bently Nevada 70M403 is an advanced wireless triaxial accelerometer and temperature sensor, serving as a cornerstone of the Ranger Pro Wireless Condition Monitoring series. Designed to eliminate the high costs of cabling, this sensor provides comprehensive 3-axis vibration data and surface temperature monitoring for rotating machinery. 

Technical Specifications

• Model Number: 70M403

• Sensor Configuration: Triaxial Accelerometer (X, Y, Z axes) + Temperature

• Frequency Range:

• Z-axis: 5 Hz to 10 kHz (±3 dB)

• X/Y-axes: 5 Hz to 4 kHz (±3 dB)

• Amplitude Range: 0 to 20 g (0 to 200 m/s²)

• Temperature Range: -40°C to +125°C

• Wireless Protocol: ISA100 Wireless (Line of sight range up to 150 meters)

• Battery: Replaceable Lithium-thionyl chloride (Up to 5-year life)

• Data Types: Acceleration, Velocity, Temperature, FFT Spectra, and PeakDemod Spectrum

• Environmental Protection: IP67; CSA Class I, Division 1 (Hazardous Area Certified)

• Measurement Intervals: Configurable from 10 minutes to 6 hours

Key Features & Engineering Advantages

• True Triaxial Monitoring: Unlike single-axis sensors, the 70M403 captures vibration in all three planes simultaneously, providing a complete picture of machine movement and fault signatures such as misalignment or unbalance.

• Advanced Diagnostics: Beyond simple overall values, this sensor provides FFT spectra and PeakDemod data. PeakDemod is critical for early-stage detection of rolling element bearing faults and gear mesh issues.

• Hazardous Area Reliability: With its Class I, Div 1 certification, the sensor can be safely deployed in explosive environments, such as oil and gas processing plants or chemical refineries.

• Flexible Installation: The sensor supports direct stud mounting for the most accurate high-frequency response, or tethered mounting for components where surface temperatures exceed the sensor's electronics limits.

• Long-Term Autonomy: The power management system and high-capacity lithium battery allow for up to five years of maintenance-free operation, significantly reducing the total cost of ownership.