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epro PR9268/203-100 — Velocity / Seismic Sensor
The PR9268 is from epro GmbH (Germany) — a different instrument family from the PR6423/PR6425/PR6426 eddy-current probes that dominate this list. The PR9268 series is epro’s electrodynamic velocity transducer / seismic sensor — a housing-mounted pickup that measures absolute bearing / casing vibration (velocity) rather than the relative shaft displacement measured by eddy-current probes. The string PR9268/203-100 is a configurable variant. Manufactured by epro (an Emerson company). Typically used as a genuine spare for existing epro monitoring installations.
- epro PR9268 velocity transducer / seismic sensor
- Measures absolute bearing/casing vibration (velocity)
- Different instrument type from PR6423/6425/6426 probes
- Configuration /203-100
- Machinery protection / condition-monitoring spare
Key Features & Functions
Velocity / Seismic Measurement
Measures absolute vibration (velocity) of a bearing housing or casing — complementary to the relative shaft-displacement measurement of eddy-current probes.
Housing-Mounted Pickup
Mounts on the machine casing/bearing housing rather than sighting a shaft target, which suits different measurement points on the same machine train.
Probe System Integration
Works as part of the epro MMS measurement system, feeding signals to the associated monitor cards.
Configurable Variants
Option codes specify variant and connection choices, allowing matching to a given installation.
Technical Specifications
| Model Number | PR9268/203-100 |
|---|---|
| Brand | epro GmbH (Germany) |
| Series | PR9268 (velocity transducer / seismic sensor) |
| Item Type | Electrodynamic velocity / seismic sensor |
| Measurement | Absolute bearing/casing vibration (velocity) |
| System Compatibility | epro MMS machinery protection systems |
| Variant Code | /203-100 (confirm) |
Source note: PR9268 is an epro velocity/seismic sensor series — a different
instrument type from the PR6423/PR6425/PR6426 eddy-current probes. The exact sensitivity,
frequency range and the meaning of the /203-100 variant code were not individually confirmed from an official datasheet and must be verified
before ordering or replacing.
Typical Application Scenarios
- Casing/Bearing Vibration Monitoring: absolute vibration measurement on machine housings.
- Steam & Gas Turbines: bearing-housing vibration on turbine trains.
- Compressors & Pumps: casing vibration measurement.
- Machine Protection Systems: vibration signals for alarm/trip logic.
- Spare Part Replacement: replacing sensors in existing epro installations.
Frequently Asked Questions
What is the epro PR9268/203-100?
It is an epro PR9268 velocity (seismic) sensor — variant /203-100 — used with epro MMS machinery protection systems.
How is PR9268 different from PR6423/PR6425/PR6426?
They are different instrument types: the PR64xx are eddy-current probes (shaft displacement/speed), while the PR9268 is a velocity/seismic sensor measuring absolute casing vibration. Confirm each item’s exact role in the epro datasheet.
Where is it mounted?
Velocity/seismic sensors mount on the bearing housing or machine casing, not sighting a shaft target. Confirm mounting guidance in the epro datasheet.
What does it connect to?
It is part of the epro MMS measurement system and works with the associated monitor cards. Confirm exact sensor/card matching in the epro datasheet.
Where can I find the official datasheet?
Official technical documentation is available from epro and authorized distributors. Verify all specifications there before purchase.
