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PRECISION 28000
Signal Conditioning
System
 
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28302B Dual Vibration Amplifier for Rotation Machinery
The Precision 28302B Dual Vibration Amplifier is designed to
condition signals from rotating machinery. The card accepts inputs from
single-ended or differential piezoelectric accelerometers, IEPE accelerometers or remote
velocity sensors.
Fixed AD and DC sensitivities are provided in engineering
units to represent either acceleration, velocity, or displacement. Programmable
high-pass and low-pass filters remove unwanted out-band signals from the
acceleration and velocity outputs. The 28302B provides simultaneous buffered AC
outputs for acceleration, velocity and displacement, as well as, one DC output
for acceleration, velocity or displacement.
The 28302B provides two channels per card with up to 32
channels in a single 28000 system chassis or mix with other 28000 signal
conditioning card. Control of all 28000 system cards is via the Ethernet or via
the 28000 graphical user interface resident on a host computer.
28302B Dual Vibration Amplifier Features
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Two channels per card, 32 channels per 28016 chassis
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16 channels per 28008 chassis
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Isolated or grounded single-ended Piezoelectric input
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Balanced differential Piezoelectric input
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IEPE input with IEPE power
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Remote charge converter (RCC) input w/IEPE power
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Remote velocity sensor input
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Five filtered AC outputs: two acceleration, two velocity
and one displacement
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One DC output: acceleration, velocity or displacement
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Programmable alarm level with relay contact output senses
acceleration, velocity or displacement levels
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Internal shunt calibration capacitors with 0.1% accuracy
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Two overload detectors (Pre-filter, charge converter and displacement out)
28302B Single Channel Block Diagram
Click to enlarge
Download the
Spec Sheet
from the Reference Library
Related 28000 cards for rotating machinery testing:
For dynamic strain conditioning, the
28454A Quad Conditioner with Balanced Current Excitation
accommodates single arm static or dynamic strain gages, RTDs or other 2-wire or
4-wire resistive transducers that require constant current excitation.
For RPM measurements, the
28524 Quad Frequency-to-Voltage Converter Module provides conditioning for
pulse, rate and frequency transducers.
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Product Information
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Application Examples:
Rotating machinery
Acceleration, velocity and displacement
measurements
Other Piezoelectric and IEPE transducer
conditioning applications
Reference
The following Specifications
are available in Precision Filters'
On-line Library
for downloading:
28104A Quad Bridge Conditioner
28108 Octal Wideband Bridge Conditioner
28144 Quad-Channel Wideband Transducer
Conditioner with Voltage and Current Excitation
28208 Octal Thermocouple Conditioner
28302B Dual
Vibration Amplifier
27304 Quad Dual Mode Charge Amplifier
28314 Quad Dynamic Charge/IEPE Conditioner
with LDTEDS
28316C Isolated IEPE Accelerometer
Conditioner with LDTEDS
28454A Quad Conditioner Specifications
28524 Quad Frequency to Voltage Converter
Modules
28608B Octal Programmable Filter Amplifier
28708 Octal
AC/DC Amplifier
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