Bently Nevada 170172-050-00 FieldMonitor Proximitor Monitor Module Product Specification
170172-050-00 is a dual-channel proximitor monitoring module belonging to Bently Nevada FieldMonitor decentralized machinery condition monitoring series, originally manufactured in the United States and designed to be plugged into the dedicated 1701 series terminal base rack instead of traditional centralized 3500 chassis, realizing near-equipment decentralized signal collection for rotating machinery monitoring. Optimized for eddy current proximity transducer systems including 3300XL and 2100 series probes, this module completes raw displacement signal conditioning, static gap and dynamic vibration calculation, programmable alarm judgment and multi-path signal output, serving core machinery protection and condition trending for steam turbines, centrifugal compressors, large feed pumps and industrial blowers across thermal power, petrochemical and metallurgical industries. The suffix 050 stands for factory preset standard measuring range configuration matching mainstream 8mm proximity probes with standard 7.87V/mm transducer sensitivity, complying with API670 machinery protection specification and holding ATEX, CSA and Class I Div.2 hazardous area certifications for installation in explosive industrial environments.
Description
Bently Nevada 170172-050-00 FieldMonitor Proximitor Monitor Module Product Specification
1. Product Overview
170172-050-00 is a dual-channel proximitor monitoring module belonging to Bently Nevada FieldMonitor decentralized machinery condition monitoring series, originally manufactured in the United States and designed to be plugged into the dedicated 1701 series terminal base rack instead of traditional centralized 3500 chassis, realizing near-equipment decentralized signal collection for rotating machinery monitoring. Optimized for eddy current proximity transducer systems including 3300XL and 2100 series probes, this module completes raw displacement signal conditioning, static gap and dynamic vibration calculation, programmable alarm judgment and multi-path signal output, serving core machinery protection and condition trending for steam turbines, centrifugal compressors, large feed pumps and industrial blowers across thermal power, petrochemical and metallurgical industries. The suffix 050 stands for factory preset standard measuring range configuration matching mainstream 8mm proximity probes with standard 7.87V/mm transducer sensitivity, complying with API670 machinery protection specification and holding ATEX, CSA and Class I Div.2 hazardous area certifications for installation in explosive industrial environments.
2. Core Functional Description
2.1 Independent Dual-channel Configurable Measurement
The module is equipped with two fully electrically isolated measuring channels, Channel 1 and Channel 2, which can be independently set via dedicated FieldMonitor configuration software without any hardware modification. Primary applicable measurement modes cover radial shaft vibration monitoring, axial thrust position measurement and rotor static eccentricity detection; each channel supports customized full-scale measuring range according to actual probe installation clearance and equipment operating parameters. When configured for vibration mode, it extracts alternating vibration amplitude, average static gap value and 1X rotational frequency component from input proximitor signals; under thrust position mode, it tracks continuous axial floating displacement of rotating shaft to prevent rotor and casing friction damage caused by excessive axial movement. Two channels run separately with zero cross-talk interference to monitor two different mechanical parameters simultaneously on one single module.
2.2 Two-tier Programmable Alarm Logic System
Every measuring channel supports independent setup of Alert pre-alarm and Danger shutdown alarm thresholds with adjustable alarm delay time ranging from 0 to 60 seconds for filtering transient abnormal signal interference. Alert status is used to trigger early warning prompts for on-site operation and maintenance staff to arrange planned overhaul; Danger alarm can drive passive dry contact switching output for access to equipment emergency shutdown interlock circuit to avoid catastrophic mechanical breakdown. All threshold values, delay parameters and channel bypass status can be modified online remotely through upper configuration software without powering off the module; bypass function is commonly activated during sensor disassembly and equipment maintenance to shield false open-circuit alarms temporarily.
2.3 Diversified Multi-form Signal Output
Three standard output modes are integrated for seamless docking with industrial control systems and portable testing instruments. First, each channel reserves coaxial buffered signal output on front panel to export original conditioned waveform signal for on-site orbit inspection and portable vibration analyzer measurement with built-in short-circuit protection to avoid internal circuit damage from external wiring faults. Second, isolated 4–20mA linear analog output per channel corresponds proportionally to full configured measuring span, directly connecting to DCS/PLC analog input modules for real-time data acquisition and historical trending storage. Third, internal backplane bus transmits all measured data, alarm status and self-diagnosis fault information to FieldMonitor system communication adapter, which converts data into Modbus RTU protocol over RS485 bus for remote upper computer centralized monitoring and data management; multiple 1701 series modules can be cascaded on one communication bus to build distributed monitoring network.
2.4 Continuous Built-in Self-diagnosis Mechanism
After power-on startup, the module automatically executes cyclic full-range self-check covering internal power circuit, channel input loop, external probe open/short-circuit fault and backplane communication link. Front panel is fitted with three LED status indicators: green RUN lamp keeps steady lighting under normal working condition; yellow CH FAULT lamp illuminates once corresponding channel detects probe disconnection, short circuit or abnormal input voltage; red ALARM lamp lights up when measured value exceeds preset Danger threshold. All detected fault codes and abnormal status will be uploaded via backplane bus to upper monitoring system for rapid troubleshooting and maintenance positioning.
3. Electrical Performance Specifications
The module draws operating power from matched 1701 terminal base backplane with rated input voltage of 24VDC, allowing wide fluctuation range of 18VDC~36VDC adapting unstable on-site industrial power supply, total typical power consumption under full-load dual-channel operation is controlled below 3.2W. Designed for standard -24VDC powered proximitor system with calibrated sensitivity of 7.87V/mm (200mV/mil) for AISI4140 steel target material, each input channel features rated input impedance of 10kΩ to match all original Bently Nevada proximity probes and certified extension cables.
For measurement precision, static gap reading error is controlled within ±0.4% full scale and dynamic vibration amplitude accuracy is within ±0.5% full scale under normal ambient temperature; built-in temperature compensation circuit limits full-temperature drift error within ±0.35% FS across working temperature range. Configurable active filter options include low-pass gap filter with fixed cutoff frequency and variable bandwidth vibration filter from 5Hz to 4kHz to eliminate power frequency interference and high-frequency mechanical clutter signals. All 4–20mA analog output circuits achieve electrical isolation over 500VAC between channel and internal core circuit to prevent reverse voltage damage from DCS side wiring faults.
4. Environmental and Mechanical Parameters
Approved operating ambient temperature scope is -20℃ ~ +70℃, storage temperature for spare part warehouse ranges from -40℃ ~ +85℃; applicable relative humidity is 5%~95% non-condensing to avoid internal circuit condensation and corrosion under high-humidity, oil mist industrial environment. Mechanical structure is verified to continuously withstand 10Hz~1800Hz vibration from adjacent running rotating equipment, suitable for installation inside bearing pedestal cabinets with dust and high temperature conditions.
Module overall dimension is 126.8mm × 21.5mm × 104.2mm with net weight around 0.32kg, adopting standard plug-in card structure exclusively matching 1701 series shared terminal base rack; aluminum alloy shielding shell effectively improves anti-electromagnetic interference performance against surrounding high-power inverter and heavy-current power cable field interference.
5. System Matching & On-site Application Guide
170172-050-00 must be installed onto matched original Bently Nevada 1701 terminal base for power supply and field wiring access, mismatched base accessories will lead to abnormal signal acquisition and precision deviation. Only factory-calibrated original proximity probes and extension cables are permitted for matching; arbitrarily cut, spliced or non-original third-party cables will destroy inherent calibration curve and trigger measurement drift or unexpected protection trip. During commissioning, complete channel function definition, range setting and alarm threshold programming via official FieldMonitor configuration software after finishing sensor field wiring. Multiple modules installed on same terminal base shall follow power load calculation rules to avoid overload damage to base power unit, and field communication wiring needs shielded twisted-pair cable with single-point grounding to guarantee stable data transmission.
6. Quality Assurance and Warranty Terms
Each finished 170172-050-00 module passes strict factory full-function aging test, temperature cycle impact test and precision calibration before factory delivery. Standard warranty period for brand-new original product is 12 months calculated from delivery date; within valid warranty period, manufacturer provides free repair service for non-artificial damaged faults under specified installation and normal operating environment.
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