Bently Nevada 121M6469-02 Wireless Triaxial Vibration

Overview

The Bently Nevada 121M6469-02 is a wireless triaxial vibration and temperature sensor from the Ranger Pro series. It continuously monitors rotating machinery and provides real-time vibration and temperature data across three axes (X, Y, Z). The sensor helps maintenance teams quickly detect imbalance, misalignment, and bearing wear before costly failures occur. Its robust design ensures reliable performance in harsh industrial environments.

Technical Specifications

• Model Number: 121M6469-02
• Sensor Type: Wireless triaxial accelerometer with integrated temperature sensor
• Measurement Axes: Acceleration (X, Y, Z), Velocity (X, Y, Z), Casing Temperature
• Sensing Element: Piezoelectric ceramic
• Amplitude Range: ±20 g peak
• Accuracy: ±5% (Z-axis @160 Hz), ±10% (X/Y axes @160 Hz)
• Transverse Sensitivity: 7% typical
• Velocity Frequency Range: 5 – 2000 Hz
• Velocity Amplitude Range: 0 – 50 mm/s (0–2 in/s), peak or RMS
• Temperature Range: −40 °C to +120 °C
• Temperature Accuracy: ±1 °C typical, ±3 °C maximum
• Wireless Protocols: ISA100 and WirelessHART
• Battery Type: Replaceable lithium-thionyl chloride battery
• Battery Life: Up to 5 years depending on sampling rate
• Mounting Options: Direct mount or tethered for high-temperature applications
• Environmental Rating: Intrinsically safe (Class I, Division 1)
• Ingress Protection: IP67 dust and water resistant
• Operating Temperature: -40°C to 85°C (-40°F to 185°F)
• Power: Replaceable lithium-thionyl chloride battery
• Data Output: Timebase waveforms, spectra, PeakDemod spectrum
• Software Integration: Compatible with Bently Nevada System 1 platform
• Case Material: 316 stainless steel body with impact-resistant PPS top