Bently Nevada 1701/25 FieldMonitor Seismic Input Monitor

The 1701/25 FieldMonitor seismic input monitor from Bently Nevada captures casing vibration signals inside machinery protection systems. Plant engineers install this monitor whenever velocity transducers must feed a protection rack directly in the field. Consequently, it delivers conditioned seismic data for bearing and gearbox health evaluation.

Key Technical Specifications

The table below outlines the main physical and electrical parameters of the 1701/25 monitor.

Parameter	Specification
Product Type	FieldMonitor Seismic Input Monitor
Compatibility	Bently Nevada machinery protection systems
Dimensions	Approximately 200 mm x 130 mm x 60 mm
Weight	Approximately 0.9 kg (2.0 lbs)
Mounting	Field enclosure or panel mounting base
Interface	Backplane bus and seismic transducer input terminals
Connectors	Multi-pin connector and coaxial input ports
Component Count	Multiple signal conditioners, integrators, filters, and driver circuits
Energy Storage	On-board capacitors for signal and voltage stabilization
Input Channels	Multiple seismic transducer input channels
Signal Types	Velocity and acceleration input support
Operating Temperature	0 degrees C to 60 degrees C
Storage Temperature	-40 degrees C to 85 degrees C
Humidity	5% to 95% non-condensing

Functional Overview

This monitor receives casing vibration signals and conditions them for protection processing. Therefore, it supplies bearing and gearbox health data from velocity and acceleration sensors. The 1701/25 also integrates acceleration signals to produce velocity readings where needed. Meanwhile, its onboard energy storage stabilizes signals during transient voltage fluctuations.

Installation and Handling Notes

Always verify sensor sensitivity settings before connecting transducers to the 1701/25. In addition, use low-noise coaxial cable to protect signal integrity. Tighten all connectors fully to prevent intermittent data loss. Finally, confirm channel readings during commissioning.