Description
Product Introduction
The Bently Nevada 170190-01 is a specialized 2-channel Dual Galvanic Isolator module designed for use with the Bently Nevada 1701 FieldMonitor system in classified hazardous area applications. Installed within the 1701 system architecture, the 170190-01 provides galvanic isolation between hazardous-area field sensors (such as Proximitor dynamic vibration probes or Keyphasor speed sensors) and safe-area monitoring electronics.
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Engineered to fulfill Intrinsically Safe (IS) requirements, the 170190-01 filters out electrical noise, suppresses high ground-loop potential, and conditions dynamic AC/DC vibration signals without requiring separate zener barriers or an intrinsically safe earth ground connection.
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Key Technical Specifications
| Parameter | Value |
|---|---|
| Catalog / Part Number | 170190-01 |
| Manufacturer | Bently Nevada (Baker Hughes / GE) |
| System Family | Bently Nevada 1701 FieldMonitor System |
| Function | 2-Channel Dual Galvanic Isolator |
| Supported Inputs | Proximitor Sensors, Keyphasor Transducers, Internal/External Sensors |
| Operating Voltage | +24 V DC Power Input |
| Operating Temp | -20°C to +70°C (-4°F to +158°F) |
| Weight | ~0.20 kg (0.44 lbs) |
| Certifications | CSA / NRTL / C, ATEX Hazardous Area Approved |
Application Scenarios & The “Trench” Experience
During maintenance on an offshore platform gas compression train located in a Zone 1 hazardous area, instrument engineers experience ground-loop noise that destabilizes baseline vibration signals. Traditional Zener barriers require a dedicated, low-resistance IS ground connection that is difficult to maintain in salt-spray marine environments. Replacing aging barrier loops with the 170190-01 Dual Galvanic Isolator isolates field sensor wiring magnetically and optically from the safe-area rack. This eliminates the need for an IS safety ground while suppressing ground-loop interference, restoring clean dynamic signal delivery to the FieldMonitor processor.
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- Offshore Oil & Gas Facilities: Provides intrinsically safe signal conditioning for probes mounted in classified Zone 1/Class I, Div 1 locations.
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- Refinery & Chemical Processing: Eliminates ground-loop noise across high-temperature gas export compressors.
- Turbine Shaft Speed Monitoring: Conditions low-voltage Keyphasor speed signals across isolated boundary zones.
- Legacy 1701 System Upgrades: Replacement isolator for retrofitting or repairing legacy FieldMonitor installations.
170190-01
170190-01
Transparency SOP: Quality Assurance & Testing
- Visual & Structural Inspection: Edge/DB-style interface connectors, circuit board isolation barriers, and mounting clips are checked for physical damage, corrosion, or thermal degradation.
- Backplane & Terminal Base Alignment Test: Inserted into a Bently Nevada 1701 test terminal base to verify mechanical seating and connection integrity.
- Galvanic Isolation & Dynamic Signal Audit:
- Galvanic Isolation Test: High-potential test (>500V DC) executed between hazardous field terminal side and safe-area signal side to confirm barrier integrity.
- 2-Channel Dynamic Signal Continuity: Calibrated AC/DC dynamic signals are passed through both channels to verify flat frequency response and zero baseline distortion across the monitoring band.
- Final ESD Packaging: Cleaned, fitted with protective contact caps, sealed in anti-static shielding bags, and packaged in heavy-duty foam containers.
The Veteran’s Tech Trap Guide (Crucial Value-Add)
- ⚠️ 1701 FieldMonitor vs. 3500 System Difference: The 170190-01 belongs to the 1701 FieldMonitor product line. It is not a direct rear I/O card for standard 3500 series racks (e.g., 3500/42M or 3500/45). Verify system model numbers prior to ordering.
- ❗ No External IS Ground Required: Unlike passive Zener safety barriers, galvanic isolators like the 170190-01 do not require a dedicated intrinsically safe earth ground connection. Do not attach unnecessary ground straps across isolated terminal barriers.
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- ⚠️ Sensor Compatibility Verification: Ensure the specific 170190-01 variant matches your transducer types (e.g., internal Proximitor vs. external sensor interface). Mismatching transducer power requirements can lead to sensor power clipping.
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- ❗ Shield Termination in Hazardous Areas: Always land cable shields according to the system installation manual—typically grounded at the safe-area terminal base and isolated/floating inside the field junction box.
Frequently Asked Questions (FAQ)
Q: What is the primary function of the Bently Nevada 170190-01? A: It is a 2-channel dual galvanic isolator for the 1701 FieldMonitor system, providing galvanic signal isolation and explosion-proof/intrinsically safe protection for field vibration transducers.
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Q: Does the 170190-01 require external Zener safety barriers? A: No. The 170190-01 provides built-in galvanic isolation, eliminating the requirement for separate external safety barriers or dedicated IS grounds.
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Q: How many channels does a single 170190-01 isolator support? A: Each 170190-01 module supports 2 independent sensor channels (e.g., two Proximitor inputs or Keyphasor channels).
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Q: Is the 170190-01 compatible with the Bently Nevada 3500 rack system? A: No. The 170190-01 is designed specifically for the 1701 FieldMonitor system and its corresponding isolator terminal bases.
Q: What warranty is provided on surplus or reconditioned 170190-01 modules? A: All New Surplus and reconditioned Bently Nevada 170190-01 modules include a full 12-month replacement warranty from the invoice date.
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