Description

The SGR570 PTO (Power Take-off) Torque Transducers are perfect for monitoring torque in PTO-driven applications, such as agricultural machinery and industrial equipment. PTO can be used to power various different equipment, these can include pressure washers, log splitters, mulchers, shredders or generators. The Torque Transducer allows you to accurately measure the torque and speed of a tractors PTO Spline drive shaft and ensures that the drive shaft is operating safely, not losing efficiency, or maybe in need of servicing.

Operating Principles

The SGR series transducers operate using a four-element strain gauge wheatstone bridge, which is connected to a miniature shaft mounted analog to digital converter and microcontroller. The microcontroller conditions and measures the strain gauge bridge output as close to the gauges as possible, eliminating any possible external noise pick up in the gauge wiring.

The shaft mounted electronic module is wirelessly powered by a radio frequency source which drives a stator coil, the output of which is received by a rotor coil on the shaft thus making the system completely contactless. This eliminates the need for slip rings and their associated wear and noise problems.

The shaft microcontroller outputs a digital serial stream that is transferred back from rotor to stator by modulating the impedance of the rotor coil and detecting the impedance changes at the stator coil. A secondary high-performance microcontroller receives the serial stream from the shaft microcontroller, which then performs calibration and temperature compensation before outputting the results digitally via RS232, CAN bus or USB. A 16-bit digital to analog converter also outputs the sensors data as a fully calibrated and compensated analog voltage or current.

Key Benefits

• Transducers up to 2000Nm
• Compatible with all PTO spline types
• Accurate measurement of torque and speed for testing equipment that use the PTO shafts
• Anti rotation eye hook, to stop transducer spinning around with the shaft.
• User configurable limit outputs
• Accuracy ±0.1%
• High mechanical overload 400%
• Overrange reading 250%
• High digital sample rate of 4000 samples per second
• Digital outputs – RS232 and USB (standard), CANbus and Ethernet (optional).
• Compatible with TorqView Advanced Torque Monitoring Software
• Non contact signal transmission, no slip rings to wear out
• Lifetime Warranty

Features

• BIT Self-diagnostics – Diagnostic system checks internal systems and operational conditions for faults, and monitors torque, speed and temperature for overscale conditions.
• Transducer status LED and simple “Sensor status” output pin, provides transducer health feedback.
• Sensors to monitor shaft temperature for better compensation and accuracy.
• Transducer Control software is provided to setup and configure the transducer.
• 3 analog channels are individually configurable, allowing changes to scaling and data assignment.
• Ability to connect up to 10 transducers using USB.
• Minimal side and end load errors
• Low linearity deviation of ± 0.05 % FSD
• Low hysteresis error of ± 0.05 % FSD
• Zero variation in torque signal with rotation (cyclic variation)
• Wide power supply range 12-32vDC

First Annual Re-calibration is included in the purchase price. Units must be returned to Omni Instruments Ltd for Re-calibration