Technical Applications for Accumetrics in Australia
In power generation and heavy industrial sectors, maintaining the integrity of synchronous motors and generators is critical for operational safety. Accumetrics systems excel in these demanding environments by providing continuous, high-resolution monitoring of rotor health without the mechanical wear associated with traditional slip rings. For facilities requiring early warning of insulation degradation, implementing the Accumetrics Earth Fault Resistance Monitor (EFREM) - End of Shaft or Mid Shaft allows engineers to track fault resistance and locate issues before catastrophic rotor damage occurs. Beyond ground fault detection, the broader telemetry range supports dynamic torque, temperature, and voltage measurements on drive shafts, gas turbines, and testing rigs, ensuring Australian engineers capture precise, noise-free data even near variable frequency drives.
Why Source Accumetrics from John Morris Group?
- High EMI Immunity: Designed with precision signal conditioning and on-rotor anti-alias filtering to preserve data integrity, making the systems highly effective near variable frequency drives and other electrically noisy environments.
- Contact-Less Digital Transmission: Utilises wireless induction power and digital data transfer, completely eliminating the need for wear-prone slip rings, bearings, or rotary transformers in long-term applications.
- Advanced Ground Fault Detection: Pioneering Earth Fault Resistance Monitors (EFREM) and Rotor Health Monitors replace outdated contact detectors, offering continuous, real-time tracking of insulation resistance on brushless synchronous machines.
- High-Resolution Measurement: Single and multi-channel systems feature 16-bit digital resolution and high sampling rates, capturing precise dynamic torque, strain, and temperature data from rotating shafts.
- Flexible Installation Options: Transmitters are mounted using customised split clamp-on collars or rugged aramid fibre straps, requiring minimal radial clearance and eliminating the need for permanent shaft modifications.
- Proven Engineering Heritage: With over three decades of specialist focus and the backing of PCB Piezotronics, the brand remains a trusted standard in rotating machinery monitoring. Discover their full capabilities on the official Accumetrics website.
We support these advanced telemetry systems locally with technical specification assistance, integration guidance, and ISO 9001 certified operations across Australia.
Frequently Asked Questions
What are the main advantages of digital rotor telemetry over traditional slip rings?
Digital wireless telemetry completely eliminates the physical sliding contacts found in traditional slip rings. This removes mechanical friction and wear, significantly reducing maintenance requirements while preventing signal degradation caused by dirt, corrosion, or vibration.
How does the Earth Fault Resistance Monitor (EFREM) protect synchronous generators?
The system continuously measures the insulation resistance from the field winding to the rotor ground on brushless AC machines. By providing real-time quantitative data on fault resistance, it enables operators to detect the early onset of ground faults and schedule maintenance before severe rotor damage or unexpected downtime occurs.
Can these telemetry systems operate in environments with high electromagnetic interference?
Yes, the equipment is specifically engineered for high EMI environments. By amplifying, anti-alias filtering, and digitising the sensor signals directly on the rotating shaft before wireless transmission, the systems maintain excellent data integrity even when installed near variable frequency drives or high-voltage components.
How are the wireless transmitters mounted onto rotating drive shafts?
Depending on the specific model and application, transmitters are securely mounted using either custom-machined split clamp-on collars or rugged aramid fibre straps. These methods require minimal radial clearance and allow for straightforward installation without permanent modifications to the existing shaft.
Are batteries required for continuous long-term rotor monitoring?
For long-duration or permanent installations, induction-powered telemetry systems are available. These setups use stationary pickup coils to wirelessly transfer power to the rotating electronics across an air gap, ensuring continuous, uninterrupted operation without the need for battery replacements.
What level of technical support is available for selecting telemetry equipment in Australia?
Our local engineering team assists with specifying the correct transmitters, receivers, and mounting configurations based on your precise shaft dimensions, RPM, and sensor requirements. We provide comprehensive guidance to ensure the chosen system integrates seamlessly into your testing facility or production environment.
