Dynamic Pressure Monitoring Module – Bently Nevada 3500 Framework Compatible

The module is fully compatible with the Bently Nevada 3500 monitoring framework and supports seamless operation alongside various 3500 series modules. It is designed for dynamic pressure measurement and protection in high-temperature, high-frequency machinery applications such as compressors, turbines, and combustion systems.

Core Functions

4-channel dynamic pressure signal acquisition

Configurable bandpass filtering with selectable low-frequency mode / high-frequency mode

Alarm and danger threshold triggering for machinery protection

4–20 mA recording output for integration with control and monitoring systems

Sensor Input Characteristics

Input type: 2-wire / 3-wire dynamic pressure sensors
(suitable for high-temperature pressure transmitters)

Sensitivity: 100 mV/psi (≈ 1.45 mV/mBar)

Input Impedance

3-wire system: 10 kΩ

2-wire system: typically 1.5 MΩ – 3.5 MΩ

Frequency Response & Signal Processing

Low-frequency mode:

10th-order high-pass + 10th-order low-pass filter

Attenuation up to 200 dB/decade

High-frequency mode:

6th-order high-pass + optimized low-pass filter

Attenuation up to 120 dB/decade

Supports notch filter configuration via software to suppress specific interference frequencies

Measurement Range

Dynamic pressure: 0 – 64 psi

Measurement range is software configurable to match application requirements

Outputs

4–20 mA analog recording output, suitable for DCS / PLC / historian systems

Alarm and danger relay outputs for machinery protection and shutdown logic

Power Supply

Supply voltage: 24 VDC

Typical power consumption: ~9 W

Communication & System Integration

Communicates via Bently Nevada 3500 framework backplane

Compatible with condition and status monitoring software through the 3500 system architecture

BENTLY 3500/64M 140734-05 Dynamic Pressure Monitor

Environmental Conditions

Operating temperature: –40 °C to +85 °C

Relative humidity: 5% to 95%, non-condensing

Mechanical Specifications

Dimensions (T × W × D): 2.6 cm × 25.5 cm × 24.6 cm

Standard 3500 series module form factor

Weight: approximately 1.05 kg