Speed monitoring system Powerlign® 2.0

powertorquefor machines

Overview From the invention of the Fast® coupling—the world’s first gear coupling—to today’s industrial couplings, Kop-Flex® delivers solutions based on decades of field experience. Powerlign® 2.0 is a digital torque-monitoring system built on nearly 30 years of customer insight, enabling data-driven condition monitoring for rotating machinery. Torque-meters measure power, speed and torque on critical equipment to detect performance deviations early and support proactive maintenance planning.

New Features

• Enhanced user interface and software: graphical outputs for trend analysis; sensor channel diagnostics; signal quality validation (coil, RTD, analog); noise correction and waveform integrity checks.
• Expanded communications: Modbus RS-485 standard, Modbus Ethernet and 4–20 mA options for DCS and plant integration.
• Improved safety and reliability: no electronics or electrical power in the rotating coupling; modular platform for serviceability.
• Smooth integration: patented architecture with full support for Distributed Control Systems (DCS) and PC/laptop data analysis.
• Alerts and fail-safe actions: configurable thresholds for alerts, alarms or closed-loop responses (shutdown or fuel/gas flow control).

Key Benefits

• Torque-trend monitoring for equipment performance evaluation and early fault detection.
• Digital phase-shift measurement without strain gauges.
• Single-source coupling and torque-meter supply to simplify procurement and support.
• Design simplicity reduces error — typical system precision ±1% of coupling full-scale torque.
• Safety: no electronics or electrical power in the coupling or coupling environment.
• Direct DCS connection via MODBUS (e.g., DeltaV); Ethernet available.
• Retrofit-friendly: instrumented spacer often inserted without disturbing existing flex half couplings.
• Configurable MODBUS protocol to match existing DCS.
• Potential cost savings through efficiency and fuel monitoring; supports NOx emissions reduction efforts.
• Interchangeable components with no field re-calibration required.
• Automatic temperature compensation; sensors rated for high-temperature operation.
• ATEX, CE and CSA certifications for explosion-proof sensors; intrinsically safe conditioning unit where specified.
• Reduced lead times and wiring cost; uses existing coupling guard; user-selectable imperial or metric units.

How it works Powerlign® uses an instrumented spacer with intermeshed pickup teeth mounted in the coupling spacer. Applied torque produces torsional twist measured as waveform signals. Two monopole sensors mounted to the coupling guard (stationary) detect the passing-tooth waveforms; boss plates welded to the guard position sensors and gaps are set with micrometers or feeler gauges. The conditioning unit receives the waveform, converts twist to torque using calibration constants, and monitors speed and temperature. Continuous temperature data is applied for automatic compensation. The conditioning unit is installed within specified cable distance of sensors to optimize accuracy and transmits data via RS-485 MODBUS (public or private), with an Ethernet option. Daily automatic self-checks correct electronic drift and minimize field calibration. Powerlign® can be configured to issue alerts, alarms or automatic control actions for closed-loop strategies.

Additional Data (table)
Capabilities | Powerlign | Powerwheel
Torque | No upper limit | No upper limit
Speed | Typically up to 8,000 rpm | Up to 20,000 rpm
Shaft Separation | 18 to 48 inches (0.5 to 1.2 m) | 5 to 180 inches (127 mm to 4.5 m)
Unbalanced Sensitivity | For less sensitive applications | For more sensitive applications
Retrofit Application | Well suited | Ideal

Technical characteristics / specifications

• Model name: Powerlign® 2.0 (digital torque monitoring system).
• Precision: typically ±1% of the coupling’s full-scale torque (system precision includes mechanical and electrical contributions).
• Sensors: two monopole sensors mounted on guard boss plates; waveform pickup from passing teeth.
• Sensor operating temperature: rated up to approximately 350°F (177°C) with automatic temperature compensation in the conditioning unit.
• Conditioning unit functions: waveform processing, twist→torque conversion, speed and temperature monitoring, 24-hour automatic self-check and drift correction.
• Communications: Modbus RS-485 (standard), Modbus Ethernet (option), 4–20 mA (option); public or private MODBUS protocol supported for DCS integration.
• Integration: full support for Distributed Control Systems (DCS) and PC/Laptop analysis; designed for close integration into control and monitoring architectures.
• Safety: no electronics or electrical power in the rotating coupling; ATEX, CE and CSA certifications for explosion-proof sensors and intrinsically safe conditioning unit where specified.
• Retrofit ranges: Powerlign® spacer lengths typically 18–48 in (0.5–1.2 m); Powerwheel covers 5–180 in (127 mm–4.5 m).
• Speed capability: Powerlign® typically up to ~8,000 rpm; Powerwheel up to ~20,000 rpm.
• Installation: sensors mounted to existing coupling guard via boss plate; gap set with micrometer/feeler gauges; boss plate orientation commonly 45° to avoid interference.
• Output types: digital MODBUS data and optional analog outputs (4–20 mA) for trending, alerts and closed-loop control actions.
• Calibration/maintenance: factory-calibrated design allows component swapping in the field without loss of precision; minimal field calibration required due to automatic compensation.