The Bentley 3500/40-01-00 is a 4-channel proximity monitor mainly used for vibration and displacement monitoring of rotating machinery. Below are its relevant parameter descriptions:1. **Input Signal**: Receives 1 to 4 signals from Bentley Nevada proximity sensors.2. **Input Impedance**:- Standard I/O (Input/Output module): 10kΩ.- TMR (Triple Module Redundancy) I/O: The effective impedance of three bus-connected TMR I/Os in parallel to one sensor is 50kΩ.3. **Accuracy**: ±0.33% FS for Direct/Gap/1X/2X.4. **Smax**: Maximum ±5%.5. **Power Consumption**: Rated power consumption is 7W.6. **Frequency Response**: Typically has a wide frequency response range from DC to 10kHz, accommodating low-frequency drift and high-frequency vibrations on sensors.7. **Sampling Rate**: Up to 20kHz per channel, capable of capturing detailed dynamic behaviors of monitored equipment, detecting even the smallest changes or anomalies in real-time.8. **Physical Characteristics**:- The monitor module (main board) measures 241.3mm × 24.4mm × 241.8mm (9.50in × 0.96in × 9.52in) and weighs 0.91kg (2.0lb).- The I/O module (non-screened) measures 241.3mm × 24.4mm × 99.1mm (9.50in × 0.96in × 3.90in) and weighs 0.20kg (0.44lb).In addition, the monitor can be configured for each channel through the 3500 Rack Configuration Software to achieve functions such as radial vibration, axial displacement, differential expansion, and shaft eccentricity. The front panel is equipped with OK, TX/RX, and Bypass LED indicators, as well as a user-programmable alarm feature allowing different alarm values to be set according to actual needs for machine protection.