EPRO PR642301R-111

Description

Detailed parameter table

Product introduction

The EPRO PR642301R-111 is a rugged eddy current proximity probe developed by EPRO (now part of Siemens Energy), engineered to withstand extreme industrial conditions—from saltwater exposure on offshore platforms to chemical splashes in refineries—while delivering precise shaft vibration, position, and speed data. Unlike standard probes (e.g., EPRO PR6423002-001-CN) designed for mild environments, the EPRO PR642301R-111 features a reinforced 316L stainless steel body, IP68 submersion rating, and PTFE cable, making it the go-to choice for machinery protection in harsh settings.

As a critical component in EPRO’s machinery protection ecosystem, the EPRO PR642301R-111 ensures reliable sensing where failure is not an option. For example, an offshore oil rig uses the EPRO PR642301R-111 to monitor a crude oil pump’s shaft: its saltwater-resistant design withstands daily spray, while its 0.1 μm resolution detects early bearing wear (a 0.5 μm vibration increase) 30 days before failure. Paired with an EPRO CON021 signal conditioner, it sends data to an EPRO MMS6210-9100-00003-11 controller, enabling maintenance that avoids a $300k unplanned shutdown.

Whether deployed in steel mill rolling mills (high heat, dust) or mining conveyor motors (impact, moisture), the EPRO PR642301R-111 combines industrial durability with lab-grade precision—making it indispensable for protecting high-value rotating equipment in extreme conditions.

Core advantages and technical highlights

IP68 Submersion & Saltwater Resistance: The EPRO PR642301R-111’s IP68 rating (submersible to 2 m) and 316L stainless steel body resist saltwater corrosion—critical for offshore and coastal applications. An offshore wind farm uses the EPRO PR642301R-111 to monitor turbine gearbox shafts: after 2 years of exposure to salt fog, the probe shows no corrosion, while generic probes failed within 6 months. This durability reduces replacement costs by 70% and eliminates unplanned downtime caused by sensor failure.

Reinforced Probe Tip for Wear Resistance: Unlike standard probes with brass tips, the EPRO PR642301R-111 features a reinforced 316L stainless steel tip that withstands accidental contact with rotating shafts. A steel mill uses the probe to monitor a rolling mill’s work roll: during a minor misalignment, the probe tip touches the shaft (1,200 RPM), but the reinforced material avoids damage—unlike brass tips that would bend, requiring a 4-hour shutdown to replace. This resilience ensures 99.9% probe uptime, critical for 24/7 steel production.

10 m PTFE Cable for Flexible Installation: The EPRO PR642301R-111 includes a 10 m PTFE-jacketed cable (extendable to 25 m with EPRO EK-6423) that resists oils, solvents, and UV radiation. A chemical refinery uses the probe to monitor a reactor agitator: the PTFE cable withstands exposure to benzene and toluene, while its length allows the signal conditioner to be mounted in a non-hazardous control room (10 m away from the reactor). Generic PVC cables would degrade within 12 months, but the PTFE cable lasts 5+ years, cutting maintenance costs by 60%.

0.1 μm Resolution for Early Fault Detection: Even in harsh conditions, the EPRO PR642301R-111 maintains 0.1 μm resolution—enabling detection of micro-faults that precede major failure. A mining operation uses the probe to monitor an underground conveyor motor’s shaft: it detects a 0.3 μm vibration increase (caused by lubricant contamination) 25 days before the motor would seize. Maintenance teams replace the lubricant during a shift change, avoiding a 12-hour production outage valued at $200k.

Typical application scenarios

In oil & gas, an offshore drilling platform uses eight EPRO PR642301R-111 probes to monitor four mud pumps (critical for well drilling). Each probe is mounted 1 mm from the pump’s crankshaft, with its 10 m PTFE cable routed to an EPRO CON021 conditioner in a weatherproof control cabinet. The platform’s harsh environment (saltwater spray, 95% humidity, temperature swings from -5 °C to +45 °C) is no match for the EPRO PR642301R-111’s IP68 rating and corrosion resistance. When one probe detects a 1.8 μm axial position shift (indicating thrust bearing wear), the EPRO MMS6210-9100-00003-11 controller triggers an alarm—maintenance replaces the bearing during a scheduled 8-hour shutdown, avoiding a 72-hour drilling halt (valued at $1.5M).

In steel manufacturing, a hot rolling mill uses six EPRO PR642301R-111 probes to monitor the work rolls of a 3,000-ton rolling press. The probes withstand ambient temperatures of 110 °C (near the hot steel), while their reinforced tips resist accidental contact with the rolls (moving at 5 m/s). The EPRO PR642301R-111 detects a 0.6 μm radial vibration increase (caused by roll unbalance) —the mill adjusts the roll alignment during a 30-minute break, preventing defective steel production (which would cost $50k in rework) and extending roll life by 3 months.

Related model recommendations

EPRO CON021: Signal conditioner paired with EPRO PR642301R-111—converts raw probe signals to 4–20 mA/Modbus, ideal for integration with DCS/PLC systems.

EPRO MMS6210-9100-00003-11: Mid-range controller compatible with EPRO PR642301R-111—aggregates data from 8 probes, runs FFT analysis, and triggers alarms for medium-scale systems.

EPRO EK-6423: Cable extension kit for EPRO PR642301R-111—extends cable from 10 m to 25 m, suitable for large machinery (e.g., offshore wind turbines).

EPRO CT-6423: Calibration kit for EPRO PR642301R-111—verifies accuracy (0.1 μm resolution) and linearity, traceable to NIST.

EPRO PR9268202-100: Vibration sensor complementary to EPRO PR642301R-111—monitors bearing vibration (0–20 mm/s), creating a complete shaft-bearing protection solution.

EPRO UES815S-24AR: Power supply for EPRO PR642301R-111 (via CON021)—delivers stable 24 VDC, ideal for harsh environments with power fluctuations.

EPRO PG-6423: Probe guard for EPRO PR642301R-111—316L stainless steel shroud, protects probe from debris in mining/steel applications.

EPRO MMS6823: High-density module compatible with EPRO PR642301R-111—aggregates data from 16 probes, ideal for large facilities (e.g., refineries with 20+ pumps).

Siemens S7-1900 PLC: DCS fully compatible with EPRO PR642301R-111 (via CON021)—receives speed/vibration data, optimized for extreme-condition industrial control.

Installation, commissioning and maintenance instructions

Installation preparation: Before installing EPRO PR642301R-111, confirm the target shaft is ferromagnetic (steel/cast iron) with ≥15 mm diameter and Ra ≤1.6 μm surface finish. Wear ESD wristbands and heat-resistant gloves (for high-temperature environments). Mount the probe using its M18 × 1.5 anti-vibration threads, setting the gap to 1 mm (use EPRO’s gap tool, calibrated to NIST). Route the 10 m PTFE cable away from high-voltage equipment (min 300 mm separation) and corrosive substances; use cable glands (IP68-rated) to seal entry points into control cabinets. Connect the probe to an EPRO CON021 signal conditioner, grounding the cable shield at the conditioner end to minimize EMI.

Maintenance suggestions: Calibrate EPRO PR642301R-111 annually using the EPRO CT-6423 kit—verify 0.1 μm resolution and ±0.1% FS accuracy. Inspect quarterly: Clean the probe tip with a lint-free cloth (avoid abrasives); check the PTFE cable for cuts or chemical damage (replace if jacket is compromised); verify signal stability via the connected controller (look for <0.05 μm drift). For offshore/coastal applications, rinse the probe monthly with fresh water to remove salt deposits. Store spare probes in a dry, -20 °C to +50 °C environment, and avoid bending the cable beyond its 50 mm minimum radius.

Service and guarantee commitment

EPRO (via Siemens Energy) provides a 3-year standard warranty for EPRO PR642301R-111, covering defects in materials, corrosion resistance, and measurement accuracy—including damage from saltwater exposure (up to IP68 limits) and mild mechanical impact. For critical applications (e.g., offshore oil, nuclear power), the Siemens Premium Rugged Service Plan extends coverage to 6 years, including annual on-site calibration (traceable to NIST), 24/7 priority technical support (1-hour response time for harsh-environment issues), and expedited replacement (48-hour delivery of a loaner probe during repairs).

Siemens’ global team of extreme-condition specialists offers dedicated support for EPRO PR642301R-111—assisting with corrosion mitigation, high-temperature mounting, and EMI troubleshooting. Customers gain free access to resources: offshore probe installation guides, saltwater maintenance tutorials, and a user community for sharing harsh-environment best practices. For out-of-warranty repairs, Siemens’ Rugged Sensor Service restores the EPRO PR642301R-111 to factory specs (replacing worn tips, testing corrosion resistance) and provides a 1-year warranty. This commitment reflects EPRO’s confidence in the probe’s durability and dedication to protecting users’ critical machinery in extreme conditions.