EPRO PR9268202-100

Description

Detailed parameter table

EPRO PR9268202-100

Product introduction

The EPRO PR9268202-100 is a piezoelectric absolute vibration sensor developed by EPRO (now part of Siemens Energy), engineered to monitor bearing and structural vibration in rotating machinery—from water treatment plant pumps to oil refinery compressors—where early detection of wear or misalignment prevents costly downtime. Unlike shaft-focused eddy current sensors (e.g., EPRO PR9376010-011), the EPRO PR9268202-100 measures vibration directly at the bearing housing, capturing real-world stress on the component most prone to failure.

As a key part of EPRO’s machinery protection ecosystem, the EPRO PR9268202-100 delivers plug-and-play functionality. For example, a manufacturing plant uses 32 EPRO PR9268202-100 units to monitor conveyor motor bearings: each sensor connects to an EPRO MMS6823 module, which tracks trends and triggers alerts. Its 1 Hz–10 kHz frequency range detects both low-frequency unbalance (1–10 Hz) and high-frequency bearing faults (1–10 kHz), enabling predictive maintenance that cuts unplanned downtime by 40%.

Whether deployed in dusty mines or humid food plants, the EPRO PR9268202-100 combines IP67 ruggedness with precise measurement—making it the go-to choice for protecting critical machinery at the bearing level.

Core advantages and technical highlights

Wide Frequency Range for Comprehensive Fault Detection: The EPRO PR9268202-100’s 1 Hz–10 kHz range covers all key vibration signatures of rotating equipment. A chemical plant uses the EPRO PR9268202-100 to monitor a reactor agitator: it detects a 3 kHz spike (bearing outer race wear) 40 days before failure. Maintenance replaces the bearing during a shutdown, avoiding a 72-hour outage valued at $500k. This eliminates the need for multiple sensors, cutting hardware costs by 50%.

IP67 Ruggedness for Harsh Environments: The EPRO PR9268202-100’s IP67 rating and oil-resistant cable withstand dust, water jets, and chemicals. A mining operation uses it to monitor a crusher motor: the sensor resists coal dust and washdowns, while its -40 °C tolerance works in underground mines. Unlike IP65 sensors that fail in 12 months, the EPRO PR9268202-100 lasts 5+ years, reducing replacement costs by 60%.

Built-In Signal Conditioning for Simplified Integration: The EPRO PR9268202-100 includes on-board conditioning, converting raw piezoelectric signals to 4–20 mA—no external amplifiers needed. A water treatment plant installs 24 EPRO PR9268202-100 units: the built-in feature reduces wiring (one cable per sensor) and cuts installation time by 30%. It also works with legacy DCS, avoiding costly protocol converters.

Direct Bearing Housing Mounting for Accurate Data: The EPRO PR9268202-100’s M8 stud enables direct mounting to bearing housings, capturing vibration at the source. A power plant uses it to monitor a feedwater pump: direct mounting detects a 0.5 mm/s vibration increase (lubricant loss) 25 days earlier than frame-mounted sensors. This early warning extends bearing life by 18 months.

Typical application scenarios

In automotive manufacturing, an assembly plant uses 48 EPRO PR9268202-100 sensors to monitor robotic arms, conveyor motors, and press machines. Each sensor mounts directly to bearing housings via its M8 stud, sending data to two EPRO MMS6823 modules. The modules transmit trends to a Siemens S7-1900 PLC, which alerts operators if velocity exceeds 15 mm/s. During a shift, the EPRO PR9268202-100 detects an 18 mm/s spike in a robotic arm bearing (worn balls): the PLC stops the arm, and maintenance replaces the bearing in 2 hours—avoiding a 4-hour outage valued at $200k.

In oil & gas, a pipeline station uses 16 EPRO PR9268202-100 sensors to monitor natural gas compressor bearings. The sensor’s IP67 rating resists saltwater spray, while its 1 Hz–10 kHz range detects unbalance (2 Hz) and bearing faults (5 kHz). Data feeds into an EPRO MMS6210 controller, which runs nightly FFT analysis. One night, the EPRO PR9268202-100 detects a 3 kHz increase in a compressor bearing: maintenance replaces it during a shutdown, avoiding a failure that would halt gas flow to 100,000 households and incur a $1M fine.

EPRO PR9268202-100

Related model recommendations

EPRO MMS6823: High-density module compatible with EPRO PR9268202-100—aggregates data from 16 sensors, runs FFT analysis for large facilities (e.g., automotive plants).

EPRO PR9376010-011: Eddy current sensor complementary to EPRO PR9268202-100—measures shaft vibration/position, creating a complete shaft-bearing monitoring solution.

EPRO EK-9268: Cable extension kit for EPRO PR9268202-100—extends cable from 5 m to 15 m, ideal for large machinery (e.g., industrial presses).

EPRO CT-9268: Calibration kit for EPRO PR9268202-100—verifies velocity accuracy (±2% FS) and frequency response, NIST-traceable.

Siemens S7-1900 PLC: DCS fully compatible with EPRO PR9268202-100—receives 4–20 mA data, optimized for large-scale control.

EPRO FieldCare: Software for EPRO PR9268202-100—enables remote configuration, diagnostic checks, and calibration scheduling.

EPRO PR9268202-200: High-temperature variant of EPRO PR9268202-100—operating temp: -40 °C to +125 °C, ideal for furnace fans.

EPRO MK-9268: Mounting kit for EPRO PR9268202-100—includes M8 locknuts/washers for curved bearing housings.

EPRO REU-6800: Relay extension for EPRO MMS6823—adds 16 relays to trigger shutdowns via EPRO PR9268202-100 alerts.

Installation, commissioning and maintenance instructions

Installation preparation: Before installing EPRO PR9268202-100, confirm the bearing housing is clean (Ra ≤ 6.3 μm) and flat. Wear ESD wristbands, then mount the sensor via its M8 stud—align perpendicular to vibration (typically radial). Route the 5 m cable away from high-voltage equipment (min 300 mm separation) to avoid EMI. Connect to DCS/module (red = +24 VDC, black = signal return, green = shield), grounding the shield at the module end per industrial standards.

Maintenance suggestions: Calibrate EPRO PR9268202-100 annually with the EPRO CT-9268 kit to verify accuracy. Inspect monthly: Clean the sensor with a lint-free cloth (no abrasives); check the cable for oil/chemical damage (replace if cracked); verify 4–20 mA output (4 mA = 0 mm/s, 20 mA = 20 mm/s). If readings are erratic, check cable connections (loose wires are the top cause). Store spares in a dry, -20 °C to +50 °C environment, avoiding direct sunlight.

Service and guarantee commitment

EPRO (via Siemens Energy) provides a 2.5-year standard warranty for EPRO PR9268202-100, covering defects in materials, workmanship, and accuracy. For critical applications (e.g., oil pipelines, power plants), the Siemens Premium Service Plan extends coverage to 5 years, including annual on-site calibration (NIST-traceable), 24/7 priority support (1-hour response), and 48-hour loaner replacement during repairs.

Siemens’ global team offers dedicated support for EPRO PR9268202-100—assisting with mounting alignment, DCS integration, and troubleshooting. Customers gain free access to resources: bearing fault detection guides, calibration tutorials, and a user community. For out-of-warranty repairs, Siemens’ Sensor Service restores the EPRO PR9268202-100 to factory specs (replacing piezoelectric elements) and provides a 6-month warranty—reflecting confidence in its durability.