Description
- EPRO PR9268/601-000 | Industrial Electrodynamic Sensor Unit
Unboxing & Physical Snapshot
- Brand & Model: EPRO PR9268/601-000
- Product Type: Electrodynamic velocity sensor for absolute casing vibration measurement on rotating machinery.
- Primary Applications: Steam turbines, gas turbines, hydro turbines, compressors, pumps, and fans requiring continuous machinery vibration monitoring.
- Sensor Orientation: Horizontal mounting version with ±30° operating orientation range depending on installation conditions.
- Cable Configuration: Integrated armored cable, approximately 5 m length, with Harting connector termination.
- Approximate Physical Dimensions: Approximately 105 × 58 × 58 mm sensor body; overall installed dimensions depend on cable routing and connector clearance.
- Estimated Shipping Weight: Approximately 1.0–1.1 kg (2.2–2.4 lb) including protective packaging.
- Housing Material: Aluminum alloy industrial housing with armored cable protection.
- Measurement Principle: Moving-coil electrodynamic velocity sensing with internal seismic mass assembly.
- Protection Rating: IP55 for PR9268/60x-000 series configurations.
- What’s in the Box:
- EPRO PR9268/601-000 electrodynamic velocity sensor
- Integrated armored cable
- Harting connector assembly
- Protective packaging
- Calibration documentation when supplied
Product Introduction
Rotating equipment protection begins with accurate mechanical vibration measurement. The EPRO PR9268/601-000 is a horizontal electrodynamic velocity sensor designed to measure absolute casing vibration on critical turbomachinery assets. Its internal seismic mass and coil arrangement generate an electrical signal proportional to vibration velocity, allowing machinery monitoring systems to detect abnormal operating conditions.
This sensor is a calibrated mechanical instrument, not a programmable electronic module. Handle it accordingly. Inspect the armored cable, connector pins, mounting thread, and sensor body before installation (transport shock can affect measurement performance even when no external damage is visible). Verify mounting direction and monitoring system input compatibility before commissioning.
Core Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | EPRO / Emerson |
| Model Number | PR9268/601-000 |
| Product Type | Electrodynamic Velocity Sensor |
| Measurement Application | Absolute casing vibration monitoring |
| Sensor Orientation | Horizontal |
| Cable Length | Approximately 5 m armored cable |
| Connector Type | Harting plug termination |
| Measurement Principle | Moving-coil electrodynamic sensor |
| Sensitivity | 22.0 mV/mm/s ±5% (Pin 3, 100 Ω load) |
| Alternative Sensitivity | 16.7 mV/mm/s ±5% depending on output pin/load |
| Frequency Range | 10–1000 Hz |
| Natural Frequency | 8 Hz ±1.5 Hz at 20°C |
| Transverse Sensitivity | ≤0.10 at 80 Hz |
| Mechanical Vibration Limit | ±1500 μm (up to ±2000 μm) |
| Amplitude Linearity | <2% |
| Maximum Continuous Acceleration | 10 g |
| Maximum Intermittent Acceleration | 20 g |
| Resistance | 3270 Ω ±10% / 3770 Ω ±10% depending on pin |
| Inductance | ≤160 mH |
| Operating Temperature | -20°C to +200°C |
| Humidity Range | 0–100% RH non-condensing |
| Protection Rating | IP55 |
| Weight | Approximately 1050 g |

EPRO PR9268/601-000
Global Compliance & Industry Certifications
Expected regulatory approvals and compliance considerations for the EPRO /601-000 include:
- CE Mark — supports EMC compliance for industrial machinery monitoring applications.
- ATEX/IECEx — available for applicable certified configurations used in hazardous-area environments.
- UL/cUL Recognition — may apply depending on the complete monitoring system installation and regional requirements.
- RoHS Compliance — applicable to current manufacturing revisions.
- Marine approvals such as DNV GL — require inclusion within a certified marine machinery monitoring package.
ATEX and IECEx approval is important for turbine halls, refineries, and chemical facilities where explosive atmospheres may exist. The approval applies to the complete certified installation, including associated equipment, wiring, and barriers.
Verify specific lot certifications with OEM.
Long-Term Storage & Asset Preservation Guide
- Keep the /601-000 sealed in its original protective packaging until installation. The Harting connector and cable termination require protection from moisture and contamination.
- Maintain storage humidity below 60% RH. Oxidized contacts can increase signal resistance and create unstable vibration readings.
- Store the sensor away from impact hazards and strong vibration sources. Internal moving-coil assemblies require mechanical stability during long-term storage.
- Avoid tightly bending the armored cable. Maintain the factory cable shape where possible to prevent internal conductor stress.
- Record the serial number, calibration data, cable condition, and inspection date in the spare asset database.
Physical Installation Prerequisites
- Install the /601-000 on a clean, flat machinery casing surface.
- Confirm horizontal orientation requirements before mounting.
- Use the correct mounting hardware and torque specification.
- Route the armored cable away from high-current motor cables, variable-frequency drive wiring, and strong electromagnetic sources.
- Maintain at least 50 mm clearance above and below cabinet-mounted monitoring equipment where natural convection cooling is used.
- Ensure signal grounding and shielding follow the machinery protection system design.
- Inspect the Harting connector locking mechanism before operation.
- Verify the monitoring input channel is configured for an electrodynamic velocity sensor.
Buyer’s FAQ (Logistics & Compliance Focus)
Q: What HS Tariff Code is commonly used for the EPRO /601-000?
A: Vibration measurement sensors are commonly evaluated under HS classifications related to measuring and inspection instruments, often within headings such as 9031. Final classification depends on the destination country’s customs interpretation and declared function.
Q: Does Country of Origin affect procurement and customs documentation?
A: Yes. COO records affect customs clearance, supplier traceability, and regulated facility audit requirements. Maintain the original EPRO label, packaging records, and calibration documentation with the spare asset.
Q: Should shipping insurance be purchased for this vibration sensor?
A: Recommended. The sensor contains calibrated mechanical components that may suffer hidden shock damage during transport. Coverage should reflect replacement cost rather than shipping weight.
Q: Does the /601-000 include firmware or require software loading?
A: No. This is a self-powered electrodynamic velocity sensor and does not contain firmware or user-programmable memory. Verify only the sensor calibration, wiring arrangement, and monitoring system compatibility before installation.



Start Chat