Guizhou Yuanmiao Automation Equipment Co., Ltd.: 1Yr

Anshun, Guizhou, China; Main products: ABB Triconex Foxboro LAM, Bentley Motorola Schneider, Kollmorgen HIMA ALSTOM, Reliance GE HONEYWELL NI、ICS

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Home > Products > Bently Nevada > BENTLY 125840-01 A vibration monitoring module in the 3500 series monitoring system

BENTLY 125840-01 A vibration monitoring module in the 3500 series monitoring system

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Product Details

Material	Other, Global universal model	Condition	Other, Global universal model
Task	Other, Global universal model	Mathematical Model	Other, Global universal model
Signal	Other, Global universal model	Customized	Non-Customized
Structure	Other, Global universal model	Operating temperature	-40℃~+85℃
Humidity	5%~95% (non-condensing)

Product Description

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125840-01 is a vibration monitoring module in the Bently Nevada 3500 series monitoring system, primarily designed to collect and analyze vibration signals from rotating machinery, providing critical data support for equipment condition assessment and fault diagnosis. The following is a compilation of relevant content from its user manual:

Product Overview

As a core monitoring component of the 3500 system, this module can connect to accelerometers, velocity sensors, or displacement sensors to real-time monitor parameters such as radial vibration, axial vibration, and bearing vibration of equipment. Through built-in signal conditioning circuits and digital processing units, it converts raw vibration signals into quantifiable vibration values (e.g., peak-to-peak, RMS) and compares them with preset thresholds to trigger abnormal alarms. Its high sampling rate and wide frequency response range enable it to capture various signals from low-frequency vibrations to high-frequency impacts, making it suitable for condition monitoring of critical rotating equipment such as steam turbines, fans, and pumps.

Technical Parameters

Power Supply: 24V DC input, typical power consumption ≤ 3.5W.
Channel Configuration: 4 independent vibration input channels, supporting single-ended or differential input.
Sensor Compatibility:

Accelerometers: Sensitivity 10mV/g to 100mV/g, measurement range ±50g (peak-to-peak);
Velocity sensors: Sensitivity 10mV/mm/s to 100mV/mm/s, measurement range 0-200mm/s (RMS);
Displacement sensors (eddy current): Compatible with Bently 3300 series probes, measurement range ±2mm (peak-to-peak).

Frequency Response: 0.1Hz to 10kHz (-3dB), with selectable filtering bands via software.
Sampling Rate: 25.6kHz per channel, supporting continuous sampling and trigger sampling (e.g., triggered by excessive vibration).
Measurement Accuracy: ±1% full scale (at 25°C), resolution 0.001mm/s (velocity) or 0.01μm (displacement).
Isolation Performance: Optoelectronic isolation between channels and between channels and backplane, isolation voltage 2500V AC (1 minute), common-mode rejection ratio ≥100dB.

Operating Environment:

Operating temperature: -40°C to 70°C;
Storage temperature: -50°C to 85°C;
Relative humidity: 5% to 95% (non-condensing);
Vibration resistance: 5g (10Hz-2000Hz);
Shock resistance: 25g (11ms half-sine wave).

Mechanical Specifications: Approximately 100mm × 150mm × 35mm (half-height module), weight about 0.35kg.

Functional Features

Multi-Parameter Monitoring: A single channel can simultaneously calculate characteristic parameters such as vibration peak-to-peak, RMS, peak, and kurtosis, meeting different fault diagnosis needs (e.g., kurtosis for early impact fault detection).
Spectral Analysis Function: Built-in Fast Fourier Transform (FFT) module, capable of generating real-time vibration spectra (0-5kHz) to identify characteristic frequencies such as rotational frequency and harmonic frequency, assisting in judging fault types like unbalance and misalignment.
Programmable Alarm Logic: Each channel supports two-level alarms (warning, danger) with thresholds configurable via software. Alarm triggering can link to relay outputs (requires modules like 3500/33).
Data Recording and Playback: Supports continuous recording of vibration trend data (sampling interval adjustable from 1-60 seconds) and can store vibration waveforms at the trigger moment (e.g., 1 second before to 3 seconds after exceeding the threshold) for post-analysis.
Synchronized Acquisition: Synchronizes with keyphasor modules (e.g., 125800-01) in the 3500 system to achieve phase correlation between vibration signals and rotational speed, supporting order analysis and shaft centerline trajectory plotting.

Installation and Wiring

Installation Position: As a half-height module of the 3500 system, it is installed in slots 3-14 of the full-size rack or slots 3-7 of the mini rack, requiring communication with the 3500/20 RIM module.
Wiring Method:

Sensor Input: Connect sensors via rear terminals. For differential input, distinguish between positive and negative poles, with the shield layer grounded at a single point;
Synchronization Signal Input: Connect synchronization pulses output by the keyphasor module for phase reference;
Analog Output: 4-20mA signals (corresponding to vibration values) connect to DCS or recorders, with impedance ≤500Ω.

Company Profile

Guizhou Yuanmiao Automation Equipment Co., Ltd.

Main products: Covering globally renowned brands: Bently Nevada, Triconex, Woodward, Foxboro, Westinghouse, Reliance, Schneider Modicon, ABB, AB (Allen-Bradley), Motorola, GE Fanuc, Yaskawa, Bosch Rexroth Rexroth, ACSO, YOKOGAWA, Rexroth, NI, ICS Triplex, Kollmorgen, Mitsubishi, MOOG, Emerson, B&R B&r, SST, ALSTOM, KUKA EPRO, LAM HIMA dark Horse, HONEYWELL, prosoft, AMAT, SIEMENS, etc. The product categories include: DCS system accessories, robot system spare parts, large servo system spare parts, etc., which are widely used in power, chemical, metallurgy, intelligent manufacturing and other fields.

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Guizhou Yuanmiao Automation Equipment Co., Ltd.: Contact nameyezi
Chat Now; AddressXixiu District, Anshun, Guizhou

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Product Categories

ABB	Bently Nevada	TRICONEX	GE
ICS Triplex	HIMA	MOTOROLA	WOODWARD
HONEYWELL	Foxboro	Schneider Modicon	YOKOGAWA
EPRO	MOOG	Westinghouse	Reliance
Emerson	B&R	ALSTOM	LAM
KONGSBERG	FANUC	National Instruments	Kollmorgen
Other Brands	Rexroth	PROSOFT	Vibro-meter
Allen-Bradley	ZYGO	Praxis	METSO

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125840-01 | BENTLY | A vibration monitoring module in the 3500 series monitoring system

BENTLY 125840-01 A vibration monitoring module in the 3500 series monitoring system

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