This series of Integrated Electronics Piezo-Electric (IEPE)

accelerometers are optimized for obtaining high quality

vibration signals in harsh industrial environments. Their piezo

sensing elements provide exceptional dynamic range,

frequency range and linearity, while their integrated

amplifiers boost the signal, making them relatively immune

to electrical noise.

Features

• Rugged stainless design, corrosion resistant

• Hermetic seal, case isolated

• ESD protection

• Reverse wiring protection

• EMI / RFI shielded

• Hazardous area certifications

Benefits

• Able to fit in small spaces

• Light weight for walk around programs

• Cross wiring does not harm sensor

• Prevents ground loops in permanent mount applications

• Can be hosed down or submersed with proper connector

• Can be used in applicable certified hazardous areas Compliance

• See individual accelerometers for compliance.

Description

This series of Integrated Electronics Piezo-Electric (IEPE)

accelerometers are optimized for obtaining high quality

vibration signals in harsh industrial environments. Their piezo

sensing elements provide exceptional dynamic range,

frequency range and linearity, while their integrated

amplifiers boost the signal, making them relatively immune

to electrical noise.

They require an industry standard constant-current power

supply, and provide an output voltage proportional to the

acceleration signal. So they can interface to a wide variety of

condition monitoring systems.

Within the series are options for 100 or 500 mV/g sensitivity,

top-exit or side-exit connector, and several hazardous-area

certification levels.

Overview

The evolution of our accelerometer sensors, velocity-sensing tools, pressure sensors,

and vibration sensors can be traced back to our velocity sensors.

These high-sensitivity units offer a self-generating moving-coil design used by geologists

to measure movement in the Earth’s crust. Today, we still refer to “seismic” sensors for

condition monitoring or general purpose in a nod to their origin.

These early sensors led to the introduction of different types of accelerometers,

including rugged solid-state piezoelectric accelerometers, ushering in today’s integrated

capacitive configurations that deploy signal processing circuitry for output signals using

velocity rather than acceleration.

Our capacitive calibration experience and expertise in how accelerometers work across

the dynamic range, developed over decades, offer a selection of first-rate, high-sensitivity

casing-mounted capacitive accelerometers and velocity sensors with a variety of models

for specific applications.

Bently Nevada’s line of accelerometers, velometers, and other acceleration and velocity

sensing tools each come with features to help keep your machinery in its best condition.

Both can handle extreme heat. The velocity sensor is made to be self-powered,

radiation-resistant, and flexible to suit your plant, while the acceleration sensor protects

from electrical hazards and offers portable data collectors.

• Withstands Extreme Heat

• Flexible and Reliable

• Radiation Resistant

• Sense Low-Frequencies

• Isolates Electricity

• Withstands Extreme Heat

• Monitors Gearmesh Frequencies

• Fully Compatible with Portable Data Collectors

ADRE System Product Features

The ADRE comes with a variety of features to best suit your needs, including easy-to-create

database software and a 3500 rack based configuration importer to provide high-speed

communication with the monitoring system.

Quick Configuration Software – Allows even novice users to create an Sxp-ready database

to configure ADRE and begin receiving data within minutes.

Impact Hammer Kit – Determines the transfer function and other response characteristics of

rotating machines and mechanical structures.

3500 Rack Importer – Sxp software with time-saving 3500 rack-based machine monitoring

system configuration importer ensures seamless communication with 3500 Series monitoring system.

Overview

The field-proven ADRE† Machine Data Acquisition System handles a broad

range of data acquisition tasks, enabling users to spend minimal time reducing

machinery data and more time interpreting it.

This rugged multi-channel machine DAQ combines fast processing power with

ease-of-use for professional machinery diagnosticians. Viewing options in the data

logging system include automatic waveform selection for plots, multiple cursors for

all plot types, and a static/couple vector option on polar plots for balancing.

The Single Board Computer offers faster boot speed, lower power requirements,

SAS disk drive technology, and a reinforced mounting case for better shock resistance.

This highly portable monitoring system is as useful for machine asset condition monitoring

and assessment tasks on the test stand as well as in the field in real-time.

Inputs

Inputs to the system are processed using three CPU modules to provide

triple modular redundancy (TMR). Each CPU processing module processes

two unique speed input channels, for a total of six speed channels for

the system. The processing modules also monitor an array of 32 discrete (DI)

and process variable (PV) signal inputs. Twelve channels of this input signal

array may be configured either as discrete inputs or 4-20 mA analog inputs.

Remaining channels in the array are reserved for discrete input signals only.

Outputs

Machinery shutdown functionality of the 3701/55 ADAPT ESD system is

actuated by TMR relay output modules. Each relay output module has five

relays with a level of configurability that accommodates a variety of applications

and requirements. Four of the five relays in each module are used to annunciate

system logic. The remaining relay reflects the OK/NOTOK status of the associated

protection path. The Bently Nevada Monitor Configuration software provides a

graphical interface to configure relay logic. The state of each relay is determined

by the system inputs and configured system logic in conjunction with thecontrol

state of the relay. Relay control states depend on the application, and may be

set as normally energized/de-energized and independent one-out-of-one, (1oo1),

voting or TMR two-out-of-three, (2oo3), voting. Each CPU module in the system

has two, internally powered, 4-20 mA recorder outputs controlled by the full-scale

speed set by the user through the Monitor Configuration software.