Bently Nevada 70M403 Wireless Triaxial Accelerometer

Overview

The Bently Nevada 70M403 is a wireless triaxial accelerometer with a temperature sensor. It belongs to the Ranger Pro Wireless Condition Monitoring series. The sensor monitors vibration and temperature on rotating machinery. It uses the ISA100 wireless protocol for reliable communication. The device suits hazardous or hard-to-access industrial areas. It runs on a replaceable lithium-thionyl chloride battery with up to 5 years of life. The sensor supports direct mounting or tethering for high-temperature zones. It features an IP67 rating and CSA Class I, Division 1 hazardous area certification. The sensor integrates with System 1 software and Modbus through a gateway.

Technical Specifications

Model Number: 70M403
Sensor Type: Triaxial wireless accelerometer with temperature sensor

Frequency Range:

• Acceleration: 0.1 Hz to 20 kHz

• Velocity: 5 Hz to 2000 Hz

Acceleration Range: ±1g to ±20g
Temperature Range: −40 °C to +125 °C

Wireless Protocol: ISA100
Wireless Range: Up to 150 meters (line of sight)

Battery Type: Replaceable lithium-thionyl chloride
Battery Life: Up to 5 years (based on sampling and transmission)

Mounting Options: Direct mount or tethered for high temperatures
Environmental Rating: IP67; CSA Class I, Division 1 certified

Data Types: Velocity, acceleration, temperature, FFT spectra, PeakDemod spectrum

Acceleration Details:

• Z-axis frequency range: 5 Hz to 10 kHz (±3 dB)

• X and Y axes frequency range: 5 Hz to 4 kHz (±3 dB)

• Amplitude range: 0–200 m/s² (0–20 g)

• Units: g or m/s², peak or rms

• Frequency min (Fmin): 2, 5, 10, 100, 200 Hz

• Frequency max (Fmax): 200, 500, 1000, 2000, 5000, 10,000 Hz (10,000 Hz only on Z-axis)

• Measurement intervals: 10 min to 6 hours