Description

Bently Nevada 170190-01 Dual Galvanic Isolator

The Bently Nevada 170190-01, also cataloged as the 170190 Dual Galvanic Isolator, operates as a dedicated hardware component for intrinsically safe transducer signal isolation within the Bently Nevada FieldMonitor system.

Hardware Specifications

Parameter	Specification
Model	170190-01
Brand	Bently Nevada
Product Type	Dual Galvanic Isolator
System Platform	FieldMonitor 1701 Machinery Protection System
Function	Two-channel galvanic isolation for intrinsically safe transducer installations
Supported Transducers	Proximity transducers including compatible 1701 series sensors
Channels	2 channels
Power Consumption	+24 VDC nominal input, +19 VDC to +33 VDC operating range
Operating Temp	-20 deg C to +70 deg C ambient air next to module
Storage Temp	-40 deg C to +85 deg C
Relative Humidity	5% to 95% non-condensing
Weight	Approximately 200 g
Signal Isolation	Galvanic isolation between hazardous field circuits and safe area circuits
Frequency Response	1 Hz to 5 kHz: +3% to +1%; 5 kHz to 10 kHz: 0% to -2%; 10 kHz to 20 kHz: -1% to -4%
Phase Shift	0 Hz to 200 Hz: <= 0.86 deg; 1 kHz to 10 kHz: <= 43.2 deg

Eddy-Current Probe Signal Isolation and Rotor Monitoring Interface

The 170190-01 Dual Galvanic Isolator processes proximity transducer signals used for machinery displacement and vibration monitoring. It maintains electrical separation between hazardous area sensor circuits and monitoring electronics. Therefore, the module supports intrinsically safe installations without external safety barriers.

The isolator maintains signal characteristics required for Bently Nevada eddy-current probe scaling. It supports accurate probe output transmission while preserving gap voltage information used for probe condition verification. The FieldMonitor architecture can evaluate probe operating conditions, including gap voltage validation with typical -10 VDC target references.

The module also supports rotor dynamics monitoring applications by maintaining stable signal transfer for shaft displacement and vibration measurements. Additionally, the galvanic isolation design reduces unwanted electrical interaction and improves cross-talk suppression between monitoring channels.

Frequently Asked Questions

Q: Can the 170190-01 directly replace external safety barriers in an intrinsically safe installation?
A: The 170190-01 provides galvanic isolation for compatible FieldMonitor transducer installations and removes the requirement for external safety barriers when applied within the approved system configuration.

Q: How many transducer signals can one 170190-01 module process?
A: The module provides two independent channels for connecting compatible proximity transducer signals.

Q: Does the 170190-01 require an external intrinsically safe ground connection?
A: The galvanic isolation design eliminates the need for a dedicated intrinsically safe ground when the module is installed according to the FieldMonitor system requirements.

Field Installation Guidelines

• Install the 170190-01 module only with compatible Bently Nevada FieldMonitor hardware and approved terminal bases.
• Verify the transducer type and wiring configuration before connecting field circuits.
• Maintain separation between hazardous area wiring and non-intrinsically safe wiring paths.
• Use appropriate cable shielding practices to reduce electrical noise during vibration and displacement signal transmission.
• Connect cable shields according to the system grounding specification and avoid creating unintended ground loops.
• Confirm probe polarity, signal routing, and gap voltage conditions before commissioning the monitoring channel.
• Provide sufficient enclosure ventilation and maintain environmental conditions within the specified operating range.

Specifications

• Brand: Bently Nevada

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems