Bentley 3300/95-010704000213450200030100 Four-channel Vibration/Displacement Monitoring Module Detailed Product Description

I. Product Overview

Bentley 3300/95-010704000213450200030100 is a high-performance four-channel monitoring module of the 3300 series TSI (Turbo Generator Monitoring Instrument) system under Baker Hughes, Bently Nevada. It belongs to the advanced functional card of the classic 3300 product line, designed for multi-parameter, high-precision, and multi-channel condition monitoring of critical rotating machinery. This model is a customized long-code configuration, integrating multi-parameter monitoring capabilities such as radial vibration, axial displacement, differential expansion, and shaft eccentricity, supporting complex configurations and flexible alarm logic. It is widely used in core units such as steam turbines, gas turbines, centrifugal compressors, and large motors in industries like power, petrochemicals, and metallurgy, providing continuous online monitoring, fault diagnosis, trend analysis, and safety interlock protection, in accordance with API 670 Fourth Edition standards.

II. Model Code Interpretation (3300/95-010704000213450200030100)

3300: Bentley 3300 modular TSI system, rack-mounted, supports hot-swapping and multi-module combination;

95: Function code, a four-channel multi-function monitoring module, supports 4 independent inputs, configurable as vibration, displacement, differential expansion, eccentricity, and other monitoring functions;

The subsequent long code (010704000213450200030100): Factory customized configuration code, defining range combinations, frequency response, input types, output configuration, alarm logic, certification level, communication protocol, hardware version, etc., including: standard vibration range (0–2 mm), medium-high frequency response (1–800 Hz), compatible with 8 mm eddy current probes, dual-channel analog output, four-channel relay alarms, basic CE certification, no explosion-proof safety barrier, standard communication interface, industrial-grade temperature range, etc. custom settings.

III. Core Functions

Four-channel independent multi-function monitoring: 4 completely independent inputs, each channel can be flexibly configured as radial vibration (peak-to-peak / effective value), axial displacement, differential expansion, shaft eccentricity, bearing vibration, etc., channels can be paired or configured independently, suitable for multi-parameter synchronous monitoring requirements;

Multi-parameter high-precision measurement: compatible with 3300 XL 8 mm eddy current probes, accurately measuring vibration, displacement, clearance, etc., with high linearity and strong stability, meeting API 670 accuracy requirements;

Wide-band signal processing: supports 1–800 Hz frequency response, covering low-speed to medium-high-speed units (60–48,000 CPM) of fundamental frequency and harmonic vibrations, capturing rotor imbalance, misalignment, rubbing and other fault characteristics;

Multi-level alarms and flexible interlocks: each channel independently sets two levels of alarms (ALERT, DANGER), supports signal abnormalities, probe faults, over-limit alarms; four independent relay contacts, can be customized for alarm logic, directly connected to the unit interlock circuit;

Intelligent fault diagnosis (OK circuit): built-in probe / cable / preamplifier fault monitoring circuit, accurately distinguishes real mechanical faults, probe break / short circuit, signal out-of-tolerance, power abnormality, poor contact, effectively avoiding false alarms and false shutdowns;

Standard industrial signal output: The backplane provides isolated analog output (-1~-17 VDC), can be connected to DCS/PLC systems; Supports digital communication interface, capable of uploading monitoring data to the upper computer or state monitoring software;

Flexible parameter configuration: range, sensitivity, frequency response, alarm threshold, alarm delay (0–10 seconds adjustable), filtering type, channel function allocation, etc. parameters, support local buttons or remote software configuration;

Strong anti-interference and high reliability: input/output/power electrical isolation, built-in electromagnetic shielding layer, strong anti-EMI/RFI interference ability; wide temperature design, suitable for harsh industrial environments; metal panel + flame-retardant enclosure, shock-resistant, corrosion-resistant, oil-resistant.

IV. Technical Parameters

(1) Measurement Parameters

Channel number: 4 independent (CH1–CH4);

Vibration range: 0–2 mm (0–80 mil) peak-to-peak, configurable as RMS value;

Displacement/difference expansion range: 0–5 mm (customizable), suitable for shaft position and expansion difference monitoring;

Sensitivity: 8 V/mm (200 mV/mil), linear error ≤ ±0.5% FS;

Frequency response: 1–800 Hz (-3 dB), mid-high frequency flat response;

Accuracy: vibration ±0.5% FS, displacement ±1% FS;

Resolution: 0.001 mm (high precision mode);

Alarm delay: 0–10 seconds programmable (default 3 seconds);

Signal filtering: low pass / high pass / band pass selectable, default 800 Hz low pass.

(2) Electrical Parameters

Power supply: -24 VDC (±10%), programmable as -18 VDC; power consumption ≤ 3 W;

Probe input: compatible with 3300 XL 8 mm eddy current probe (330101/02/03/04), input impedance 10 kΩ, supports probe fault monitoring;

Analog output: -1 to -17 VDC isolation, output impedance 100 Ω, linear error ≤ ±0.2% FS;

Relay output: 4 independent (each channel 1 warning + 1 danger), contact capacity 250 VAC/3A passive dry contact;

Signal isolation: 2500 Vrms isolation between input/output/power, anti-common-mode interference;

Communication interface: supports RS232/RS485, compatible with Modbus protocol, capable of remote data transmission and configuration.

(3) Environmental and Mechanical Parameters

Operating temperature: -40℃ to +70℃ (wide temperature design);

Storage temperature: -40℃ to +85℃;

Relative humidity: 0%–95% (no condensation);

Installation: 3300 standard 19-inch rack slot, supports hot swapping, no need to stop the machine for module replacement;

Size: approximately 220 mm (depth) × 120 mm (width) × 83 mm (height);

Weight: approximately 1.3 kg;

Protection grade: IP20 (in the rack);

Enclosure: metal panel + flame-retardant engineering plastic, shock-resistant, corrosion-resistant, oil-resistant.

(V) Certification and Compliance

Electromagnetic compatibility: CE (EN 61000-6-2/4), industrial-grade EMC certification;

Industry standards: API 670 Fourth Edition (petrochemical machinery protection standard);

Explosion-proof certification: None (applicable to ordinary industrial areas);

Quality system: ISO 9001 certification.

V. Structural Design

(1) Rack-mounted modular architecture

Compatible with 3300 series standard racks (4–14 slots), directly inserted into vacant slots, supports hot swapping, module replacement without machine shutdown, maintenance is convenient. Front panel integrates high-brightness LED status lights (OK, ALERT, DANGER, BYPASS) and simple operation buttons, can view parameters and alarm status locally; The back panel layout is clear, including 4-channel probe input terminals, analog output terminals, relay contact terminals, power interface, communication interface. The wiring is neat, facilitating debugging and maintenance.

(II) Independent Circuit Design for Four Channels

The four signals are processed by completely independent circuits. Each channel has an independent signal conditioning unit, linearization unit, filtering unit, alarm comparison unit, and OK monitoring unit. There is no crosstalk between channels, ensuring high stability and low failure rate, thus ensuring the accuracy of multi-parameter synchronous measurement.

(III) Enhanced Anti-interference and Reliability Design

Triple electrical isolation for input/output/power, with an internal electromagnetic shielding layer, effectively suppressing EMI/RFI interference generated by industrial site motors, frequency converters, and high-voltage equipment; The OK circuit monitors faults such as disconnection, short circuit, and poor contact of probes, cables, and preamplifiers in real time, quickly identifying abnormalities and alarming; The wide temperature design is suitable for harsh conditions such as high and low temperatures and humidity; The metal casing is shock-resistant and corrosion-resistant, extending the service life.

Six. System Compatibility

(1) Hardware Compatibility

Compatible with 3300 series chassis (3300/05), power module (3300/12/13), system monitoring module (3300/03);

Compatible with 3300 XL 8 mm eddy current probes, extension cables, preamplifiers, components can be interchanged without separate calibration;

Analog output compatible with mainstream DCS/PLC systems (such as Siemens, Honeywell, Yokogawa);

Relay contacts compatible with alarm lights, buzzers, interlock circuits;

Communication interface supports connection with upper computers and data acquisition devices, enabling remote monitoring.

(2) Software Compatibility

Support System 1 status monitoring software, enabling real-time data collection, trend analysis, fault diagnosis, historical data storage and report generation;

Compatible with 3300 series configuration software, allowing remote configuration of module parameters, calibration of probes, and viewing of alarm logs;

Support local button configuration, enabling basic parameter settings and alarm configuration without software.

Seven. Typical Application Scenarios

Power Industry: Multi-parameter monitoring of steam turbines / nuclear power turbines / gas turbines / generators / feedwater pumps in thermal power plants (vibration + displacement + misalignment), providing comprehensive protection for core units;

Petrochemical Industry: Vibration and shaft position monitoring of centrifugal compressors, process turbines, large pump sets, flare gas compressors, ensuring continuous production;

Metallurgical Industry: Vibration and eccentricity monitoring of blast furnace fans, large motors, rolling mill transmission high-speed rotating equipment, preventing equipment failures;

General Industry: Multi-parameter online monitoring, preventive maintenance, and safety interlock protection of key rotating equipment in papermaking, cement, pharmaceutical industries.

Eight. Installation and Maintenance

(1) Installation Key Points

Module installation: Insert the module into the vacant slot of the 3300 chassis to ensure good contact of the back panel connector and fix the panel screws;

Probe installation: 3300 XL 8 mm probe is installed vertically on the radial (vibration) or axial (displacement / misalignment) of the shaft, with a static gap set at 1.27 mm (standard value), the probe cable is firmly fixed to avoid vibration wear;

Wiring standard: The probe cable is connected to the input terminals CH1–CH4 of the module, the analog output is connected to the DCS/PLC, the relay contact is connected to the alarm / interlock circuit, the communication interface is connected to the upper computer, the wiring is firm without loosening;

Power-on configuration: Connect the -24 VDC power supply of the chassis, set the channel functions, range, alarm threshold, filtering parameters, alarm delay through local buttons or configuration software, save parameters for effect.

(2) Daily Maintenance Regular inspections: Daily checks on the LED status lights on the front panel (the light remains on normally for normal operation, and turns on for alarm), the tightness of the connection terminals, and the heat dissipation condition of the modules;

Annual calibration: Every year, use standard gap blocks to calibrate the vibration and displacement accuracy, ensuring the measurement error is ≤ ±0.5% FS;

Cleaning and dust removal: Every quarter, clean the dust from the module panel and the slot of the rack to ensure good heat dissipation and avoid short circuits caused by dust accumulation;

Spare parts management: Use the original 3300 XL probe, extension cable, and module to avoid measurement deviations or failures caused by non-original components.

IX. Usage Notes

General area use: Without explosion-proof design, it is strictly prohibited to use in flammable and explosive hazardous areas;

Probe matching specification: It must be matched with the 3300 XL 8 mm eddy current probe system. It is not allowed to mix 5 mm/11 mm probes; otherwise, the range and sensitivity will not match;

Gap installation standard: The static gap of the probe must be strictly installed at 1.27 mm. Installing too close may cause shaft collision and wear, while installing too far will result in weak signal and poor linearity;

Channel configuration restrictions: The four-channel function configuration must comply with the module hardware configuration and cannot exceed the customized coding-defined function range;

Prohibition of unauthorized modification: It is not allowed to privately change the cable length, dismantle the module, or replace non-original components. Otherwise, the module will fail and lose the warranty;

Power-off operation safety: When connecting, inspecting, or replacing the module, the power supply of the rack must be cut off to prevent short circuits or electric shock accidents.