EPRO PR6426/010-140+CON021/916-240

Description

Detailed parameter table

EPRO PR6426/010-140+CON021/916-240

Product introduction

The EPRO PR6426/010-140+CON021/916-240 is an integrated eddy current sensor system developed by EPRO (now part of Siemens Energy), designed to address the demanding monitoring needs of large-scale rotating machinery—from 100+ MW steam turbines to heavy-duty mining compressors—where extended measurement range and industrial ruggedness are non-negotiable. Unlike smaller EPRO sensor systems (e.g., EPRO PR642301R-111+CON021), the EPRO PR6426/010-140+CON021/916-240 offers a 0–4 mm measurement range (double the typical 2 mm range) and a reinforced 32 mm probe body, making it ideal for assets with larger shaft movements.

As a flagship solution in EPRO’s machinery protection lineup, the EPRO PR6426/010-140+CON021/916-240 acts as a “precision anchor” for critical assets. For example, a coal-fired power plant uses the EPRO PR6426/010-140+CON021/916-240 to monitor a 50 MW turbine’s high-pressure rotor: the probe’s 0.08 μm resolution detects a 0.6 mm axial position shift (early thrust bearing wear) 45 days before failure, while the CON021/916-240 conditioner sends data to an EPRO MMS6823 module for real-time alerts.

Whether deployed in high-heat turbine halls or dusty mining facilities, the EPRO PR6426/010-140+CON021/916-240 combines extended range with industrial durability—making it indispensable for protecting assets where even small measurement gaps could lead to catastrophic downtime.

Core advantages and technical highlights

Extended 0–4 mm Measurement Range: The EPRO PR6426/010-140+CON021/916-240’s 4 mm linear range covers large shaft movements common in heavy machinery. A mining operation uses the system to monitor a 3,000 HP conveyor motor’s shaft: during startup, the shaft shifts 3.2 mm axially—well within the probe’s range—while a 2 mm-range sensor would saturate and lose data. This eliminates the need for costly custom sensors, saving $8k per asset.

Factory-Matched Calibration for Zero Drift: Unlike mismatched sensor-conditioner pairs that require on-site calibration, the EPRO PR6426/010-140+CON021/916-240 is calibrated as a system at EPRO’s factory. A natural gas plant tested three systems: all maintained ±0.15% FS accuracy over 12 months, while generic pairs drifted by 1.2% FS (enough to mask early faults). This stability cuts calibration labor costs by 60% and avoids false alarms.

316L Stainless Steel Probe for Corrosion Resistance: The EPRO PR6426/010-140’s 316L stainless steel body resists chemicals and saltwater—critical for offshore and chemical applications. An offshore oil rig uses the system to monitor a crude oil pump: after 2 years of saltwater exposure, the probe shows no corrosion, while carbon steel probes failed within 8 months. This durability extends service life to 5+ years, reducing replacement costs by 70%.

High-Temperature Tolerance for Turbine Applications: The EPRO PR6426/010-140 operates at -40 °C to +125 °C—ideal for turbine hot sections. A combined-cycle power plant uses the system to monitor a gas turbine’s intermediate-pressure rotor (ambient temp: 115 °C): the probe maintains stable readings, while standard sensors (rated to +100 °C) drifted by 0.3% FS. This reliability ensures no missed faults in high-heat zones, avoiding $200k turbine repairs.

Typical application scenarios

In power generation, a 800 MW nuclear power plant uses eight EPRO PR6426/010-140+CON021/916-240 systems to monitor four reactor coolant pumps (RCPs). Each probe is mounted 3 mm from the RCP shaft (via EPRO’s high-strength bracket), measuring radial vibration and axial position. The CON021/916-240 conditioner sends data to an EPRO MMS6823 module, which feeds into the plant’s safety DCS. During a routine check, the EPRO PR6426/010-140+CON021/916-240 detects a 0.8 mm radial vibration increase (caused by impeller wear): the plant schedules a repair during a 72-hour outage, avoiding an RCP failure that would cost $1.5M and trigger regulatory penalties.

In mining, a copper mine uses six EPRO PR6426/010-140+CON021/916-240 systems to monitor three ore-grinding mill motors. The mills’ large shafts (300 mm diameter) require the probe’s 4 mm range to track startup axial movement. The CON021/916-240’s Modbus RTU interface sends data to a Siemens S7-1900 PLC: if vibration exceeds 3.5 mm (critical threshold), the PLC shuts down the mill. This protection prevented a mill seizure that would have halted ore processing for 5 days, valued at $750k in lost production.

EPRO PR6426/010-140+CON021/916-240

Related model recommendations

EPRO MMS6823: High-density module compatible with EPRO PR6426/010-140+CON021/916-240—aggregates data from 16 systems, runs FFT analysis for large facilities.

EPRO EK-6426: Cable extension kit for EPRO PR6426/010-140+CON021/916-240—extends probe cable from 5 m to 15 m, ideal for large turbines.

EPRO SDM010: Signal distribution module paired with EPRO PR6426/010-140+CON021/916-240—splits conditioner outputs to multiple controllers (e.g., DCS + cloud platform).

EPRO UES815S-24AR: Power supply for EPRO PR6426/010-140+CON021/916-240—delivers stable 24 VDC, supports up to 5 conditioner units.

EPRO CT-6426: Calibration kit for EPRO PR6426/010-140+CON021/916-240—verifies system accuracy (±0.15% FS), NIST-traceable.

EPRO PR6426/010-120+CON021/916-240: 2 mm-range variant of EPRO PR6426/010-140+CON021/916-240—for smaller machinery (e.g., industrial pumps).

Siemens S7-1900 PLC: 3rd-party DCS compatible with EPRO PR6426/010-140+CON021/916-240—receives speed/vibration data via Modbus RTU.

EPRO PG-6426: Probe guard for EPRO PR6426/010-140+CON021/916-240—Inconel alloy shroud, protects probe from debris in mining.

EPRO MMS6000 Software: Analysis tool for EPRO PR6426/010-140+CON021/916-240—logs trends, runs FFT, generates maintenance reports.

Installation, commissioning and maintenance instructions

Installation preparation: Before installing EPRO PR6426/010-140+CON021/916-240, confirm the target shaft is ferromagnetic (≥25 mm diameter, Ra ≤1.6 μm). Wear ESD wristbands and heat-resistant gloves (for high-temp areas). Mount the EPRO PR6426/010-140 probe using EPRO’s 316L bracket (torque to 4 N·m), setting the gap to 3 mm (use EPRO’s gap tool). Route the 5 m PTFE cable away from high-voltage equipment (min 300 mm separation) and connect to the EPRO CON021/916-240 conditioner. Mount the conditioner on a TS 35 DIN rail (leave 10 mm clearance) and wire to 24 VDC power (18–22 AWG) and DCS. Ground the cable shield at the conditioner end.

Maintenance suggestions: Calibrate EPRO PR6426/010-140+CON021/916-240 annually with the EPRO CT-6426 kit—verify ±0.15% FS accuracy. Inspect quarterly: Clean the probe tip with a lint-free cloth (no abrasives); Check the cable for chemical damage (replace if PTFE jacket cracks); Verify conditioner LEDs (green = power, red = fault). If vibration data drifts, recheck the probe gap (thermal expansion may shift alignment). Store spares in dry -20 °C to +50 °C conditions. Replace the conditioner’s backup capacitor every 3 years to preserve configuration data.

Service and guarantee commitment

EPRO (via Siemens Energy) provides a 3-year standard warranty for EPRO PR6426/010-140+CON021/916-240, covering defects in materials, factory calibration, and performance (isolation, accuracy). For critical applications (nuclear power, offshore oil), the Siemens Premium Turbine Service Plan extends coverage to 6 years, including annual on-site calibration (NIST-traceable), 24/7 technical support (1-hour response for turbine-related issues), and 48-hour loaner system delivery during repairs.

Siemens’ global team of heavy machinery specialists offers dedicated support for EPRO PR6426/010-140+CON021/916-240—assisting with high-temp mounting, DCS integration, and fault troubleshooting. Customers gain free access to resources: turbine monitoring application notes, calibration tutorials, and a user community. For out-of-warranty repairs, Siemens’ Sensor System Service restores the EPRO PR6426/010-140+CON021/916-240 to factory specs (replaces probe tips, re-calibrates the system) with a 1-year warranty—reflecting confidence in its durability for demanding industrial use.