Product Introduction

The Bently Nevada 170190-01E is a specialized dual galvanic isolator module designed to support intrinsically safe signal transmission for vibration and proximity sensors in hazardous environments. As part of Bently’s FieldMonitor product suite, 170190-01E enables the use of Proximitor, Velomitor, or accelerometer transducers in Zone 1 / Division 1 areas without the need for bulky external safety barriers. The module ensures that each input channel is galvanically isolated, maintaining signal integrity and protecting the system from ground loops or interference.

Within the Bently FieldMonitor architecture, 170190-01E is typically mounted on or near the 1701/06 Isolator Terminal Base, acting as the interface layer between field sensors and higher-level monitoring units. It preserves the intrinsic safety boundary by converting sensor signals under isolation, thereby enabling safe routing into standard instrumentation networks. By using 170190-01E, plant designers can simplify hazardous-area installations, improve maintainability, and maintain compliance with safety standards, while keeping the signal path robust and reliable.

Core Advantages and Technical Highlights

Intrinsic Safety without External Barriers:
170190-01E eliminates the need for external safety barriers by providing internal galvanic isolation in each channel, while ensuring signal integrity. This advantage simplifies installation, reduces component count, and enhances reliability in hazardous zones.

Dual-channel Isolation:
With two fully isolated channels, 170190-01E can interface multiple sensors simultaneously while preserving independence between signals. This helps prevent cross-talk or interference and supports efficient system layouts.

Seamless Integration into FieldMonitor System:
170190-01E is engineered to work directly with the 1701/06 Isolator Terminal Base and other internal I/O modules in the Bently FieldMonitor suite. This ensures compatibility of signal routing, diagnostics, and power with the existing architecture.

Compact and Lightweight Design:
Its relatively small footprint (120.7 × 50.8 × 251.5 mm) and light weight (~0.2 kg) mean that 170190-01E can be mounted inside cabinets or near sensor clusters without excessive space or structural impact.

Wide Temperature Range and Rugged Construction:
Rated to operate from –20 °C to +70 °C, 170190-01E can withstand a wide range of ambient conditions typical in industrial plants. Its construction is suitable for vibration and field conditions, maintaining stability under stress.

Full Hazardous Area Certification:
170190-01E carries certifications for Ex nA in North America and ATEX nA for Europe, allowing it to be safely deployed in areas classified as Zone 1 / Division 1. These approvals ensure compliance with international safety standards.

Enhanced Signal Protection:
By galvanically isolating sensor inputs from the rest of the system, 170190-01E provides protection against ground loops, surges, EMI, or other disturbances, improving measurement fidelity and system robustness.

Typical Application Scenarios

The dual galvanic isolator 170190-01E finds its home in rotating-machinery protection systems across power generation, oil & gas, petrochemical, and industrial plants. Key scenarios include:

• Turbine vibration monitoring: In turbine or generator assemblies, proximity (Proximitor) sensors often reside in hazardous or pressurized enclosures. 170190-01E allows those sensors to be safely tied into the Bently monitoring system without external barriers.

• Compressor packages: Accelerometers or velocity sensors installed near compressors can be isolated and fed into monitoring racks through 170190-01E, maintaining intrinsic safety.

• Offshore and petrochemical installations: In zone-classified areas (Zone 1), 170190-01E enables safe routing of sensor signals into control or monitoring rooms, bridging the hazardous-to-safe area boundary.

• Retrofit or expansion of existing vibration systems: When adding new sensors or replacing monitoring modules, 170190-01E simplifies integration by reducing barrier modules and offering plug-and-play connectivity.

• Critical asset monitoring in harsh environment units: Because of its ruggedness and certified safety rating, 170190-01E can be installed near machinery, reducing cable runs and simplifying wiring logistics.

In all these applications, 170190-01E adds value by enabling simpler hazardous-area design, ensuring reliable sensor isolation, reducing maintenance overhead, and supporting accurate condition-based monitoring.

Related Model Recommendations

• 170190-01 – A non-“E” variant of the dual galvanic isolator, functionally similar, suitable for installations where the “E” spec (enhanced or extended) is not required.

• 141380-01 – Another dual galvanic isolator variant within Bently’s suite, often interchangeable or used in complementary systems.

• 1701/06 Isolator Terminal Base – The mounting base that supports 170190-01E, providing wiring terminals and mechanical support.

• 1701/05 Terminal Base – For less critical or non-hazardous installations, this base works with traditional barriers instead of the galvanic isolator scheme.

• 1701/22 FieldMonitor Management Interface Module (FMIM) – Higher-level module in the signal chain that receives isolated signals and communicates them to DCS or SCADA.

• 1701/15 Proximitor Input Monitor – A module that reads Proximitor sensor signals; uses 170190-01E to safely route signals in hazardous areas.

• 1701/30 Dynamic Pressure Monitor – For monitoring pressure fluctuations in rotating machinery, this module may use the isolated sensor path provided by 170190-01E.

Each of these models works in conjunction with or around 170190-01E within the FieldMonitor system, supporting different layers of signal routing, monitoring, and safety architecture.

Installation, Commissioning and Maintenance Instructions

Installation preparation:
Before installing 170190-01E, ensure that the system is de-energized and that you comply with all safety and grounding practices. Prepare the 1701/06 Isolator Terminal Base first, checking for clean, tight terminal blocks and proper bonding. Use certified wiring rated for hazardous areas and maintain correct routing and shielding. Verify ambient temperature and space clearance to allow heat dissipation.

Commissioning:
Mount 170190-01E onto the Isolator Terminal Base, ensuring alignment and secure fastening. Connect sensor leads to input terminals and route the isolated output to the internal I/O or monitoring modules. Power the system and monitor LED or diagnostic indicators for proper module health. Validate channel isolation via insulation tests. Confirm that the transducer signals pass through correctly and that diagnostic values (open circuit, short, signal integrity) appear in the host monitoring system.

Maintenance suggestions:
Conduct periodic inspections for corrosion, loose terminations, or compromised insulation. Utilize built-in diagnostics in the host FieldMonitor system to detect deviations or anomalies in signal levels or isolation performance. If channel failure is detected, isolate power and replace 170190-01E with a certified spare, then retest isolation and signal paths. Avoid field-level repair; always replace with quality certified modules. Keep firmware and system diagnostics up to date to ensure compatibility and early fault detection.

Service and Guarantee Commitment

Bently Nevada provides full factory testing, calibration, and certification for every 170190-01E unit before shipment, guaranteeing performance and safety compliance. A warranty is included to cover manufacturing defects and workmanship over the agreed period.

If faults or malfunctions occur, Bently’s authorized service centers offer repair or replacement services, ensuring the returned module meets original specifications. Each repaired or exchanged 170190-01E is subjected to full functional and isolation tests before return to the user.

Technical support is available for configuration, diagnostics, integration, and troubleshooting, ensuring your 170190-01E performs reliably in mission-critical monitoring systems. With robust after-sales support and quality assurance, your investment in 170190-01E is backed by Bently’s commitment to safety, accuracy, and customer satisfaction.

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