Bently Nevada 3500/64M Dynamic Pressure Monitor

The Bently Nevada 3500/64M Dynamic Pressure Monitor delivers precise pressure-signal conditioning across four independent channels and integrates seamlessly with the 3500 protection platform. The module accepts high-temperature pressure-transducer inputs and generates dynamic-pressure measurements that engineers use for fast alarm logic and advanced machinery diagnostics.

Functional Overview

The 3500/64M processes one bandpass dynamic-pressure variable per channel, and it allows users to configure corner frequencies and a dedicated notch filter through 3500 Rack Configuration Software. The monitor also provides a stable recorder output that supports trend analysis within plant control systems.

Monitoring & Protection

Technicians rely on the 3500/64M to compare live pressure data with programmed alert and danger setpoints, and the module delivers real-time protection information for both operations and maintenance personnel. Each channel conditions its pressure-transducer signal and therefore enhances the accuracy of measured dynamic variables.

Technical Specifications

Inputs

Parameter	Specification
Channels	1–4 pressure-transducer inputs
Input Impedance (3-wire)	10 kΩ
Input Impedance (2-wire)	1.5 MΩ to 3.5 MΩ typical
Sensitivity	100 mV/psi (1.45 mV/mBar)

Outputs

Parameter	Specification
LEDs	OK, TX/RX, Bypass
Buffered Outputs	One coaxial connector per channel, short-circuit protected
Output Impedance	550 Ω
Recorder Outputs	+4 to +20 mA proportional to full scale
Voltage Compliance	0 to +12 VDC load range
Load Resistance	0 to 600 Ω
Resolution	0.3662 µA per bit
Accuracy	±0.25% at room temperature, –0.66% to +0.70% over full temperature range
Update Rate	≤100 ms

Transducer Power Supply

Type	Specification
3-wire	24 VDC
2-wire	3.3 mA current source @ 22 VDC nominal

Dimensions & Weight

Item	Specification
Module Dimensions	241 mm x 61 mm x 241 mm
Weight	1.5 kg

Origin

Item	Specification
Country of Manufacture	United States (Bently Nevada)

Application Value

Field technicians apply the 3500/64M in turbines, compressors, and high-energy industrial processes, since the monitor captures dynamic-pressure behavior with high precision and delivers dependable alarm performance.