0.01% Oil Quality Change Detection!!!

Equipment Condition Monitoring that Enables Preventative Maintenance and Reduces Operating Costs

The OQSx-G2 sensor is the world’s most precise oil condition monitoring sensor. Its real time oil condition analysis is so accurate and sensitive that it will immediately alert equipment operators to the earliest indications of a problem; well before any material equipment damage. This vital and reliable information is delivered to operators and managers instantly such that preventative maintenance can be actioned and expensive equipment damage and ultimately breakdowns avoided.

This exceptional functionality is achieved using Tan Delta’s unique next generation FSH™ core technology which is integrated in every OQSx-G2 sensor. This innovative and proven technology enables real-time, ultra-accurate, continuous analysis of any oil type, working in any application, from the largest engine or gearbox to turbines and hydraulics, with even the most subtle condition change of as little as 0.01% instantly detected and reported

Unlike other equipment monitoring systems such as vibration or particle counters which are only triggered by symptoms caused after significant damage is well underway and thus repair will already be costly, the OQSx-G2 sensitivity detects and reports trace changes in oil condition which characterize the earliest stages of equipment issues – typically before damage has occurred and thus the issue can be quickly diagnosed and corrected saving considerable cost. 

In addition to early detection of equipment issues OQSx-G2 delivers a broad range of additional benefits that include safely extending maintenance intervals through identification of when equipment needs maintenance rather than time-based schedules and the precise identification of oil end of life and thus a significant reduction in oil usage. In the final analysis, equipment operators see a significant reduction in immediate and long-term equipment operating costs coupled with increased reliability and extended equipment life.

The OQSx-G2 sensor is easy to install on any equipment operating in any environment and with any oil type. And with a typical investment pay back of well under 6 months and a maintenance free life of over 5 years, the financial rational is clear.

Tan Delta Systems offer a range of advanced oil condition-based equipment monitoring solutions, suitable for any industrial or commercial equipment monitoring application. Equipment operators can purchase complete ‘plug & play’ kits direct from us, which are delivered anywhere worldwide within days and can be fitted instantly to any equipment, or if preferred, through one of our network of fully trained and certified distributors. For equipment manufacturers interested in integrating deep-insight oil condition based equipment monitoring into their own products, we offer a range of customised solutions from standard sensors at volume pricing to totally integrated technology solutions suitable for high volume cost sensitive applications such as automotive.

About CIS Industrial Services

CIS Industrial Services ia leader in the supply of advance Oil Condition Monitoring technologies, Vibration Monitoring technologies, products, system and services.

Our products we represent are trusted by the worlds leading industrial and commercial companies to monitor Vibration, and Oil, helping to optimize equipment productivity, reduce operating cost, thereby remaining competitive in a global economy.

Should you wish to lean more about our Products and Services, please do not hesitate to contact Lourens Janse Van Rensburg via email: Lourens-cisindustrial@outlook.com or alternatively via phone: +27 (0) 79 512 8027

Is It Possible to Check if Your Motors are Defect Free?

YES, it’s possible to check if the windings, insulation, rotor, stator, power supply, and connectors are free of defects.


A study conducted in 1985 by the Electric Power Research Institute (EPRI) in association with GE found that motors failed 41% due to bearings failures, but 47% of the time due to rotor and stator failures.

1985 EPRI/GE Study EL 4263-286 Volume 1 Project 17

You Don’t Have to be Part of the Statistics

Motor Circuit Analysis (MCA) test the motor when it is off-line, thus making it Safe and a Convenient method to test you motor’s health. Motor Circuit Analysis (MCA) is a de-engergised test method to access the health of the motors in your plant.

This method can be initiated from the Motor Control Centre (MCC) or directly at the motor, itself. The advantages of testing from the Motor Control Centre (MCC) is that the entire electrical portion of the motor system, including the Connections and Cables between the test point and the motor is evaluated.

How Does It Work

The electrical portion of the 3 phase motor system is made up of the basic motor circuit, which is nothing more than 3 simple RCl circuits (resistive, capacitive, inductive). Each basic circuit represents one phase of the three-phase motor system. Each phase of the motor system is identical, each basic circuit should respond the same way to an applied signal.

Diagnostic with regards to failures can start as indicated in the below image, between turns in the same coil, between coils in the same phase, and phase to phase. Motor Circuit Analysis provides a Complete view of the motor in just minutes.

Typical Test Sequence

Traditional Megohmmeter – IS NOT ENOUGH

Megohmmeter insulation testing will only detect faults to ground. Only a portion of the Motor electrical winding failure begin as ground faults, they will go undetected using this method, alone. Moreover surge testing requires the application of high voltages, which can be destructive when testing a motor, making it unsuitable for troubleshooting and true Predictive Maintenance Testing.

Megohmmeter Vs. Digital Multimeter

Therefore,  when  testing  Three-phase  equipment  such  as  motorsgenerators,  or  transformers,  the  response  of  each  phase  is  compared  to  the  other  two.

Phase  resistance  is  evaluated  to  determine  connection  issues;  Inductance  is  evaluated  for  possible  rotor  problems;  Impedance  and  inductance  matching  are  used  to  detect  contamination  or  over-heating  of  the  windings;  Insulation  to  ground  tests  detect  conductor  to  ground  issues

Motor Circuit Analysis Is the Way Forward


Typical applications where Motor Circuit Analysis is most effective

  • AC/DC Motors
  • AC/DC Traction Motors
  • Generators/Alternators
  • Machine Tool Motors
  • Servo Motors
  • Control Transformers
  • Transmissions & Distributions Transformers

Motor Circuit should also be used for;

  • For Commissioning purposes
  • Troubleshooting
  • And, Reliability Testing

CIS Industrial Services – Expertise You Can Count On!!!

CIS Industrial Services has appointed Dickey Kruger during February, 2020.

Dickey Kruger has 17 years of experience in the field of Motor Circuit Analysis. He has a vast experience in the Mining Sector, diagnosing electrical drives, from a simple Motor driving a conveyor belt to a more complex machines such as, Continuous Miner for the under ground mining operations.

Should you wish to measure your Electrical drives in your plant effectively, please do not hesitate to get in touch with CIS Industrial Services to make use of this wealth of experience, assisting you, making sure your drive’s runs effectively as they were designed too.

About CIS Industrial Services.

CIS Industrial Services are a leader in the supply of advance Oil Condition Monitoring technologies, Vibration Monitoring technologies, Motor Circuit Analysis (MCA), Products, System and Services.

The products we represent are trusted by the world’s leading industrial and commercial companies to monitor Vibration, and Oil, helping to optimise equipment productivity, reduce operating cost, thereby remaining competitive in a global economy.

Should you wish to learn more about our Products and Services, please do not hesitate to contact Lourens Janse Van Rensburg via email: Lourens-cisindustrial@outlook.com or alternatively via phone: +27 (0) 79 512 8027

Accurate Real Time Monitoring

Tan Delta Oil Quality Sensor (OQSx)

The Oil Quality Sensor (OQSx) is your ideal solution for accurate real time oil condition monitoring. Quickly and easily installed, the OQSx detects all wear and contamination elements to an exceptionally high sensitivity level and provides an accurate statement of your oil condition second by second – in any oil type and in any application.


The OQSx accurately reports the precise condition of any oil in real time and is certified to a sensitivity of 15ppm.

ATEX Certified

The OQSx Ex II is fully certified, ATEX approval to BS EN 60079-0: 2012 and BS EN 60079-11:2013 x ic IIA T3 Gc.


Heavy Mobile Mining Equipment; Continuous Miners, Dump Trucks, Shovels, Drills. Transformers, Gearbox, Compressors, Engines, Hydraulics.

CIS Industrial Services (Pty) Ltd – Plant Uptime, Plant Safety, Asset Reliability.

For more information, please contact Lourens Janse Van Rensburg via mobile +27 (0) 79 512 8027 or alternatively via email: Lourens-cisindustrial@outlook.com.