BENTLY 140734-01 Front Displacement Monitoring Detector

Input	4 independent channels for proximity transducers (eddy current sensors)
Output	4-20mA analog signals per channel
Power Supply	24V DC (derived from 3500 rack)
Frequency Response	0.1–5 kHz (vibration) / DC–100 Hz (position)

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Description
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Description

BENTLY 140734-01 Front Displacement Monitoring Detector

140734-01

The BENTLY 140734-01 (also known as the 3500/40M Proximitor Monitor) is a four-channel vibration and position monitoring module designed by Bently Nevada (now part of Siemens) for the 3500 Machinery Protection System. It serves as a critical component for real-time health monitoring of rotating machinery, such as turbines, compressors, and pumps, by converting signals from proximity transducers into actionable data. Below is a detailed breakdown of its technical specifications, functional capabilities, and practical applications.

Parameter	Specification
Model	140734-01 (3500/40M-01-00)
Type	4-channel proximitor monitor
Input	4 independent channels for proximity transducers (eddy current sensors)
Output	4-20mA analog signals per channel
Power Supply	24V DC (derived from 3500 rack)
Frequency Response	0.1–5 kHz (vibration) / DC–100 Hz (position)
Sensitivity	78.7 mV/g (vibration) / 8 mV/mil (position)
Operating Temperature	-30°C to +65°C
Physical Dimensions	241.3 × 107 × 43 mm (9.5 × 4.2 × 1.7 in)
Weight	0.8 kg (1.76 lb)
Compliance	CSA/US Class I Division 2, ATEX Zone 2 (optional variants)

140734-01

The BENTLY 140734-01 is a versatile vibration and position monitoring module that plays a pivotal role in modern industrial condition monitoring. Its four-channel design, rugged construction, and compatibility with the 3500 series make it ideal for safeguarding high-value machinery. While primarily sourced through third-party suppliers, its proven reliability and global support network ensure seamless integration into industrial workflows. For detailed technical documentation or customized solutions, contact Siemens’ industrial support teams or visit their official resource library.

140734-01

Installation

- Rack Mounting: Installed in Slot 2–15 of a 3500 series rack with proper grounding and cable routing to minimize EMI.
- Wiring: Connects to proximity transducers via screw terminals or pluggable connectors .
- Configuration
  - Software Programming: Use 3500 Rack Configuration Software to define monitoring functions, alarm setpoints, and relay logic.
  - Firmware Updates: Downloadable via the 3500 system’s communication gateway .

Troubleshooting
- Diagnostic Tools: Built-in self-tests verify sensor connectivity and signal integrity.
- Event Logging: Records alarm history for post-fault analysis via the 3500 system’s diagnostic interface .