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Overview

The Bently Nevada 1701/25-01 is a 2-channel Seismic Input Monitor.
It accepts acceleration or velocity transducer signals and conditions them for measurement.
Users can configure alert and danger alarm setpoints per channel.

Key Capabilities

• Processes signals into direct, RMS, and integrated measurements
• Supports filtered measurements for velocity and acceleration
• Provides real-time parameter values for control system display
• Embedded self-tests monitor device and transducer integrity
• Generates “Not OK” alerts for fault detection

Measurement Options

• Velocity: Direct, RMS, Integrated, Filtered versions
• Acceleration: Direct, RMS, Integrated, Filtered versions
• Each channel can only measure velocity or acceleration
• Channels are configurable independently via software

Alarm and Delay Features

• Alert and Danger alarms with programmable delays (0.15–20 s)
• Supports non-latching alarms and adjustable hysteresis (0.5% full scale)
• Alarm trip multiply factor selectable: None, 1.5, 2, or 3
• Timed OK channel defeat for operational flexibility

Signal Processing

• Velocity filtering: 3 Hz to 5,500 Hz with adjustable high/low pass
• Acceleration filtering: High-pass 3–200 Hz, low-pass 1.1–14.05 kHz
• Ensures signals are correctly conditioned before output

Full-Scale Ranges

• Velocity: Peak 0–0.5 to 0–2 in/s, RMS 0–0.5 to 0–2 in/s
• Acceleration: Peak 0–2 g to 0–10 g, RMS 0–2 g to 0–10 g
• Integrated measurements configurable per channel

Protection and Barriers

• Internal galvanically isolated barriers (require 1701/06 base)
• Optional external Zener and isolated barriers for added protection

Applications

• Machinery monitoring and vibration analysis
• Seismic measurement for industrial equipment
• Data acquisition for operations and maintenance teams

Ordering Information

• Model: 1701/25-01
• Channels: 2
• Transducer compatibility: Acceleration or velocity
• FieldMonitor™ Series for industrial vibration monitoring

Details