Bently Nevada 121M6470 Ranger Pro Wireless Condition Monitoring

Overview

The Bently Nevada 121M6470 is a wireless triaxial vibration sensor from the Ranger Pro series. It enables continuous, remote monitoring of rotating machinery. This sensor supports predictive maintenance by delivering high-resolution vibration and temperature data. It requires no wired infrastructure, making installation flexible and simple. The sensor suits various rotating assets like motors, pumps, compressors, gearboxes, and fans. Additionally, it integrates fully with System 1 software for advanced analysis.

Technical Specifications

• Model Number: 121M6470

• Sensor Type: Wireless Triaxial Vibration Sensor

• Measurements:

• Velocity and acceleration (X, Y, Z axes)

• Casing temperature

• Wireless Protocols: ISA100, WirelessHART

• Battery Life: Up to 5 years (depends on configuration and sampling rate)

• Mounting Options: Direct mount or tethered (for high-temperature zones)

• Size: Approx. 88 mm × 40 mm

• Weight: 230 grams

• Environmental Rating: Intrinsically safe (Class I, Division 1)

• Data Types: Timebase waveforms, FFT spectra, PeakDemod spectrum

• Velocity Spectra:

• Axes: X, Y, Z

• Frequency range (Fmin to Fmax): 5 to 2000 Hz

• Number of lines: 400, 800, 1600, 3200

• Units: in/s or mm/s (rms)

• Temperature Sensor Range: -40°C to 120°C (-40°F to 248°F)

• Resolution: 0.1°C

• Accuracy: ±1°C typical, ±3°C maximum

• Output Data Interfaces:

• Modbus (via device gateway)

• Generic Client Interface (GCI) for ISA100 devices

• HART IP for WirelessHART

• Measurement Intervals: 10 min, 20 min, 30 min, 1 h, 2 h, 3 h, 4 h, 6 h

• Wireless Network:

• Standards: ISA100.11a, WirelessHART

• Topology: Star (ISA100), Mesh (ISA100 or WirelessHART)

• Radio Standard: IEEE 802.15.4

• Frequency: 2.45 GHz ISM band

• Provisioning and Updates: Over-the-air or USB docking station

• Security: 128-bit AES encrypted packets

• Output Power: Typical 5.13 dBm

• Max RF Output Power: 4 mW/MHz

• Operating Temperature: -40°C to 85°C (-40°F to 185°F)

• Vibration Limit: 20 g peak

• Chemical Resistance: Stainless steel, high-temperature solvent- and UV-resistant PPS plastic

• Shock Resistance: 0.5-meter drop onto concrete

• Max Altitude: 3,000 meters (9,842 feet) outdoors