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Technical specifications for PR9268-301-100
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Manufacturer:Emerson
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Product Category:Machinery Monitoring Systems
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Spare Part Number:PR9268-301-100
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Estimated shipping dimensions:18x18x8cm
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Weight:0.75 kg
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Tariff Code:8537101190
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Counliy of origin:USA
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Measuring orientation:Horizontal; up to 100 degC
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Cable construction:Armored
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Cable length:5 m
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Cable termination:Open ends
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Frequency range:4 to 1000 Hz
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Natural frequency:4.5 +/-0.75 Hz at 20 degC
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Sensitivity:28.5 mV/(mm/s) +/-5%
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Damping:0.56 at 20 degC; 0.42 at 100 degC
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Measuring-circuit resistance:1875 Ohm +/-10%
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Insulation resistance:>1 MOhm at 500 V AC
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Inductance:<90 mH
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Capacitance to housing:<1.2 nF including cable
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Maximum lifting/sinking current:1.8 mA
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Operating temperature:-20 to +100 degC
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Ingress protection:IP55
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Minimum cable bend radius:35 mm
Information
Overview
Manuals
Common Applications
Product Precautions
Emerson PR9268-301-100 is pr9268 electrodynamic velocity sensor. It converts horizontal machine-case velocity into a self-generated electrical signal for continuous monitoring and protection.
- Designed for horizontal measuring axes
- Includes a five-metre armored open-ended lead
- Operates without an external transducer supply
- Supports absolute vibration velocity measurement
PR9268-301-100 operates with AMS 6500 A6120 or compatible monitor, Horizontal machine-case mounting point, Field terminal and shield arrangement, Velocity alarm and trend configuration.
Engineered applications include Horizontal turbine casing vibration, Compressor bearing-housing monitoring, Motor and gearbox case motion, Balance-of-plant protection.
Important Notice: Align the sensing axis horizontally, maintain full base contact, support the five-metre cable and verify polarity plus channel scaling before automatic protection is restored.
Apter Power PR9268-301-100 Manuals and Guides
Apter Power PR9268-301-100 Measurement-System Technical Reference PDFApter Power PR9268-301-100 Installation, Loop Check and Acceptance Workbook PDFThe first document provides model-specific technical and measurement-system reference data. The second is a separate field workbook for mounting, wiring, commissioning and acceptance records.
Horizontal turbine casing vibration
Measures lateral case motion at turbine bearings.
Compressor bearing-housing monitoring
Feeds horizontal housing velocity to the protection rack.
Motor and gearbox case motion
Supports rotating-equipment condition trending.
Balance-of-plant protection
Provides a direct case-seismic input for alarms and shutdown logic.
Read the applicable Emerson machinery-monitoring instructions before work. Verify PR9268-301-100 and the installed PR9268 horizontal case-seismic measurement configuration.
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Confirm the full PR9268-301-100 marking, horizontal measuring orientation and assigned machine location before removal.
2
Place the monitored machine and protection logic in the approved maintenance state before sensor work.
3
Use the three M6 through bores or M4 blind-hole threads without exceeding the documented 10 mm blind-thread depth.
4
Support the 5 m armored cable and maintain at least the documented 35 mm bending radius.
5
Preserve the measuring axis and housing contact surface; do not introduce tilt, rocking or loose mounting.
6
Identify both open-ended cable conductors and preserve shield and polarity continuity to the monitor channel.
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Measure the sensor circuit and insulation condition before reconnecting it to the monitoring input.
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Run the machine under controlled conditions and verify velocity response, phase behavior and alarm logic.
Technical notes
Align the sensing axis horizontally, maintain full base contact, support the five-metre cable and verify polarity plus channel scaling before automatic protection is restored.
FAQ View All FAQ
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What measurement or system function does PR9268-301-100 perform?PR9268-301-100 is a pr9268 electrodynamic velocity sensor. It converts horizontal machine-case velocity into a self-generated electrical signal for continuous monitoring and protection.
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Which installed hardware must be paired with PR9268-301-100?Use PR9268-301-100 with the documented PR9268 horizontal case-seismic measurement components: AMS 6500 A6120 or compatible monitor, Horizontal machine-case mounting point, Field terminal and shield arrangement.
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How should the Measuring orientation value for PR9268-301-100 be verified?Confirm the complete nameplate and order code before work; the documented measuring orientation is Horizontal; up to 100 degC.
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What connection detail is critical when installing PR9268-301-100?Preserve every conductor, connector and shield identity, then follow the model-specific connection arrangement described in the controlling Emerson document.
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How is PR9268-301-100 mechanically installed without changing measurement behavior?Use the three M6 through bores or M4 blind-hole threads without exceeding the documented 10 mm blind-thread depth.
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What commissioning test should be completed for PR9268-301-100?Run the machine under controlled conditions and verify velocity response, phase behavior and alarm logic.
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What configuration record should be retained when replacing PR9268-301-100?Retain the as-found position, cable construction, cable or channel identity, gap or scaling value, diagnostics and final functional-test result.
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Can PR9268-301-100 replace a similar Emerson model without engineering review?No direct substitution should be assumed; verify the full order code, measuring function, interface, cable or channel arrangement and the approved PR9268 horizontal case-seismic measurement configuration.
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