Machine Sentry®


Machine Sentry® has been developed to meet the needs of industry, built upon 43 years of learning and experience, refined to meet the needs of the “Expert User” with tools and techniques that allows the novice user to be just as effective with the correct level of automated diagnostic analysis support and expert web enabled supervision.

Essential support, where rotating equipment is vital to the efficient operation of the plant, can benefit from condition monitoring programs.

Machine Sentry® offers a cost effective solution whether this is for one asset or many.

We offer web enabled or direct expert analytical services either through fixed contract or ‘pay as you go’ methods eliminating the requirement to employ a condition monitoring specialist.

Machine Sentry® is easy to use and utilises readily available inexpensive hardware as the basis for its measurements.

Machine Sentry® is available with ATEX or IECEx certification making it suitable for use across a wide range of applications form the food and beverage to oil and gas industries.



The Machine Sentry System ADA™ the “Automated Diagnostic Assistant” saves time and improves quality of asset condition based decision making.

ADA™ the Automated Diagnostic Assistant

AVT advocate that your most valuable commodity is time. ADA™ the Automated Diagnostic Assistant is designed to save both time and money by automatically detecting the onset of a range of asset failure modes.

ADA™ can predict stage 2, 3 and 4 bearing failure as well as a wide range of common fault conditions that impact on the reliability of your assets. It helps set priorities for busy maintenance people and save time by indicating from a mass of data what might be important to improve reliability.

The ADA™ algorithms have been developed by AVT Reliability® vibration experts based upon thousands of hours of vibration data coupled with field experience. ADA™ acts as an aide to the on-site maintenance team identifying potential causes for concern.

Faults diagnosed include:

  • Bearing stage 2, 3, or 4
  • Unbalance (couple, static, dynamic and overhung)
  • Bent shaft
  • Resonance
  • Parallel, angular, or complex misalignment
  • Cocked bearing
  • Structural or rotating looseness
  • Blade or vane pass issues
  • Soft foot
  • Cavitation
  • Lack of lubrication
  • Gear misalignment
  • Gear backlash / eccentricity
  • Gear tooth broken
  • Gear tooth wear


Machine Sentry® uses a combination of ISO standard velocity, acceleration and statistical alarms to highlight assets which are of concern.

An expert at your fingertips

ADA™ is intended to benefit maintenance departments who are passionate about using predictive and / or preventative maintenance to improve reliability. Early action on the detected fault conditions will prevent some catastrophic failures that would have consumed costly materials and most importantly time to rectify.



Having highlighted an issue, ADA™ provides verification guidance to confirm the diagnosis.

Industrial Application Overview

Oil & Gas & Chemical Industry

The Oil and Gas a pioneer investor into condition monitoring in many forms have been at the forefront of leading proactive maintenance strategies.

Considering the onset of industrial digitalisation and operator challenges on effective data management and utilisation, they are questioning the value and typically high cost of traditional methods for condition monitoring.

Thereby Machine Sentry® is an ideal condition monitoring solution for the oil and gas industry and has already been adopted by a number of major oil companies. The system capability, web enabled instantaneous data analytics and low cost of implementation makes Machine Sentry® the solution of choice in this industry.

The MSM-1 vibration sensor is available with ATEX or IECEx certification and is suitable for use in many Zone 1 and Zone 2 classified areas (refer to certificate for details).

“I am really impressed with the speed at which the AVT Reliability® team have integrated with both our offshore and onshore teams, they have identified some high level areas of asset availability risk on both safety and production systems, this has allowed us to direct our resources to enable maximum focus which ultimately affects our bottom line. Their Machine Sentry® system is what gives AVT Reliability® the edge”.

– John Chappell, Maintenance & Reliability AESSEAL®.


Pharmaceutical, Food & Beverage Industry

The Pharmaceutical and Food & Beverage Industries are a long time user of the Machine Sentry System.   Utilising the CMMS system capability (Watch Keeping) and visual inspection as part of the Food Grade Lubricant management requirement to ensure compliance and good health and safety standards.

A natural extension of scope in many instances machine sentry was expanded to included condition based maintenance techniques such as Vibration, Oil and Thermal Analysis of critical assets.

Numerous challenges exist in regard to optimising assets within these industries over and above the compliance and legislative mandatory controls.   Often assets are running at high speed, exposed to challenging cleaning products and regimes/water, heat and contamination control a key driver within maintenance management programs.


Power Generation

Condition monitoring is widely used in the power generation industry.

Often the main assets are monitored utilising online systems feeding analytical data, alarms directly into plant control rooms.

The machine sentry suite/system offers the power industry a unique approach whereby Machine Sentry Online system can integrate with Machine Sentry Fixed, and Machine Sentry Mobile thereby offering the user a complete integrated reliability monitoring capability and if required direct reporting into ERP systems such as SAP.

An example feature and benefit is deployment on auxiliary assets on a power facility that are not directly reporting/integrated into the plant control rooms.

Machine Sentry® Fixed and ADA™ the Automated Diagnostic Assistant solution can offer that solution and is available as standard, as part of the Machine Sentry® solution which provides the equivalent of a Level II condition monitoring engineer continually monitoring data. ADA™ can predict stage 2, 3 and 4 bearing failure and detect a wide range of other common fault conditions. By highlighting potential problems and recommending verification checks, ADA™ can save hours of a maintenance engineer’s time without the need for intervention from an expert analyst.