Product Description

Overview

The Bently Nevada 70M303 is a wireless triaxial vibration and temperature sensor from the Ranger Pro series, engineered for continuous condition monitoring of rotating machinery. By eliminating the need for hardwired connections, it enables flexible deployment across motors, fans, pumps, and other balance-of-plant equipment. The 70M303 is configured with the industrial-grade ISA100.11a wireless protocol for secure, reliable mesh networking and seamless integration with Bently System 1 software.

Key Features

• Tri-Axial Vibration Sensing: Measures vibration along vertical, longitudinal, and transverse axes for full-spectrum fault detection.

• Surface Temperature Measurement: Monitors casing temperature simultaneously for thermal diagnostics.

• Industrial Wireless: ISA100.11a protocol with 128-bit AES encryption; can function as a network router to extend signal coverage.

• Rugged Construction: 316L stainless steel housing with PPS top, rated for IP67 ingress protection.

• Long Battery Life: Smart power management supports up to 5 years of operation depending on transmission frequency.

• Hazardous Area Rated: Certified for ATEX/IECEx intrinsically safe applications.

Performance Characteristics

Complete Motion Analysis: Captures acceleration and velocity in three axes, time waveforms, FFT spectra, and PeakDemod data for advanced diagnostics of bearing faults, misalignment, and structural resonance.

Frequency and Amplitude Range:

• Z-axis: 5 Hz to 10 kHz

• X/Y axes: 5 Hz to 4 kHz

• Peak Acceleration: ±20 g

Power and Configuration:

• Replaceable lithium battery with up to 5 years of operation

• Over-the-Air (OTA) configuration adjusts sampling intervals to optimize battery life

Environmental and Durability Ratings:

• Operating Temperature: -40°C to +85°C

• Ingress Protection: IP67

• Shock and Chemical Resistance: Withstands 0.5-meter drop and is resistant to UV and industrial solvents

Technical Specifications

Applications

The 70M303 is ideal for remote monitoring of rotating machinery where running cables is impractical. Typical use cases include motors, fans, pumps, compressors, and other balance-of-plant equipment. It is particularly effective for detecting early-stage bearing faults, structural resonance, and overheating in industrial environments.

FAQ

Q: Can the 70M303 operate in hazardous areas?
A: Yes, it is certified intrinsically safe for ATEX and IECEx Zone 0/Class I Division 1 environments.

Q: How long does the battery last?
A: Depending on sampling frequency and OTA configuration, the battery can last up to 5 years.

Q: How should the sensor be mounted?
A: Use the M6 x 1 mm threaded stud to attach the sensor securely to a flat, rigid metal surface. Proper mounting ensures accurate high-frequency vibration readings.

Q: Can it integrate with System 1 software?
A: Yes, the sensor transmits data wirelessly to System 1 for real-time monitoring and advanced analysis.