Tan Delta Systems Limited is a global leader in the development and supply of advanced oil condition monitoring technologies, products and systems.

Based in Sheffield, United Kingdom, our products are trusted by the world's leading industrial and commercial companies to monitor oil condition in real time across a broad variety of applications. Our products help them optimise equipment productivity, reduce operating costs, thereby remaining competitive in a global economy.

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Tan Delta are experts in oil condition monitoring. Years of continuous technology and product development coupled with hundreds of accumulated man years of field experience with customers endows us with a unique knowledge base. This unique capability is deployed on a daily basis for the benefit of our customers working in a wide variety of industries and applications.

Tan Delta expertise allows customers to enjoy the significant benefits of oil condition monitoring.

Continuous development keeps our customers competitive through leading edge oil condition monitoring solutions that reduce costs and increase productivity.

Chris Greenwood, Tan Delta


Technology defines why our products are adopted by world leading companies. Our technology delivers exceptional oil quality monitoring characteristics unmatched by other sensors. Patented techniques, developed and refined over many years, ensures ultimate performance and with absolute reporting accuracy.

Oil condition is affected by a combination of wear and contamination. Within each of these factors, multiple independent elements are at play: particles, water, acid, viscosity, TBN to name just a few. Our technology ensures that nothing is missed and all wear and contamination factors are reliably detected, quantified and accurately reported – all in real time.

Our customers want a simple, clear and accurate statement of real time oil condition. We provide this through a Tan Delta Number (TDN) scale whereby oil condition is reported as a single number on a scale of 1200 to 0. The TDN ensures accurate and reliable data which in turn makes implementation of a cost saving, productivity increasing oil condition monitoring system simple and easy.

  • Exceptional sensitivity to any change in oil condition/quality no matter the cause – wear or contamination.
  • Works with any oil in any application.
  • Extremely accurate and precise real time oil condition reporting.
  • Patented techniques ensure the ultimate performance to even the slightest condition change.
  • Sophisticated sensor technology, complemented with simple and accurate real time oil condition statements.
  • A unique Tan Delta Number reported as a single number from 1200 to 0.

Oil Lifecycle

As soon as you break the seal and pour your new oil out of its container, it's already beginning to change.

Overtime the condition of the oil is affected by many factors such as water, soot, acid and particles. As these factors are introduced be it through general wear or contamination they all reduce the effective performance of your oil reducing how efficiently it lubricates your equipment.

Oil Quality Sensor (OQSx)

The Oil Quality Sensor (OQSx) can detect changes in your oil quality no matter what the cause, giving you a quick and simple way of ensuring your equipment is being properly protected by your oil. By using our patented method the Oil Quality Sensor (OQSx) is able to accurately monitor the condition of your oil.

Traditionally, dielectric sensors are used to measure the capacitance of the oil, which changes as the oil wears. As the Oil Quality Sensor (OQSx) measures both capacitance and conductance of the oil the increased sensitivity allows the sensor to detect the very early stages of deterioration or damage to the oil, allowing timely planning of any intervention that may be needed.

Another key benefit of the Oil Quality Sensor (OQSx) is the stability of the readings at different temperatures and will provide accurate readings in both hot and cold oil. Small and robust, the Oil Quality Sensor (OQSx) can be installed on any equipment, in any environment, and be configured to any oil type.


All Tan Delta products are engineered and quality manufactured for long term continuous operation in the harshest commercial and industrial environments. Each product is carefully engineered and tested to withstand the long term effects of extreme shock, vibration, heat, cold, thermal shock, electrical interference and many more factors.

Our uncompromising product engineering is complemented by aerospace standard quality manufacturing with 100% multi-point testing of each and every product. The result are products which our customers trust to deliver years of reliable service in any environment.


Technology defines why customers around the world choose Tan Delta. This is why we are continuously investing in the development of new technologies and products which will deliver even greater commercial benefits and opportunities to our customers in the future.

Tan delta systems

Tan Delta Systems Limited provides products and systems which enable equipment operators to significantly reduce operating costs whilst simultaneously increasing productivity. The result is improved operating productivity and cash flow.

We understand how important optimal oil management is to the efficient operation of most equipment; and therefore the profitability of your business. Tan Delta oil condition monitoring uses advanced, patent protected, technology to tell you the exact condition of any oil to a high degree of accuracy in real time. This reliable and accurate information enables automatic notification and scheduling of optimal maintenance intervals based upon actual need. At the same time our system provides a highly effective and reliable early warning system for any unexpected issues which may lead to premature and or unexpected equipment wear and or failure.

Our solutions work with any oil type and are easy to fit to any equipment operating in any environment. Tan Delta oil quality monitoring is the choice of equipment operators around the world.

Tan delta systems

Tan Delta Systems Limited fournit des produits et systèmes qui permettent aux opérateurs de matériel de réduire sensiblement les coûts d'exploitation tout en augmentant la productivité. Le résultat est amélioré d'exploitation productivité et flux de trésorerie.

Nous comprenons l'importance huile optimal management est pour le bon fonctionnement de la plupart des appareils ; et donc la rentabilité de votre entreprise. Condition d'huile Tan Delta surveillance des utilisations avancées, brevets protégés, la technologie pour vous dire l'état exact de n'importe quelle huile à un degré élevé de précision en temps réel. Ces informations fiables et précises permettent la notification automatique et la programmation des intervalles d'entretien optimale basées sur les besoins réels. En même temps notre système fournit un système d'alerte rapide très efficace et fiable des problèmes inattendus qui peuvent conduire à une usure prématurée et ou imprévu équipement et ou l'échec.

Nos solutions fonctionnent avec n'importe quel type d'huile et sont faciles à s'adapter à n'importe quel matériel fonctionnant dans n'importe quel environnement. Surveillance de la qualité de la huile Tan Delta est le choix des conducteurs d'équipement dans le monde entier.

Tan delta systems

Tan Delta Systems Limited ofrece productos y sistemas que permiten a los operadores de equipos para reducir significativamente los costos de operación, mientras que simultáneamente aumenta la productividad. El resultado es una mejora de la productividad de operación y flujo de caja.

Entendemos lo importante que es la gestión óptima de aceite es para el buen funcionamiento de la mayoría de los equipos; y por lo tanto la rentabilidad de su negocio. Tan Delta condición del aceite de monitoreo utiliza una avanzada, protegidos por patentes, la tecnología que le diga la condición exacta de cualquier aceite con un alto grado de precisión en tiempo real. Esta información confiable y precisa permite la notificación automática y la programación de los intervalos de mantenimiento óptimas basadas en necesidades reales. Al mismo tiempo, nuestro sistema proporciona un sistema de alerta temprana altamente eficaz y fiable para cualquier problema inesperado que puede conducir a un desgaste prematuro y equipos o inesperado y o el fracaso.

Nuestras soluciones funcionan con cualquier tipo de aceite y son fáciles de adaptarse a cualquier equipo que funciona en cualquier entorno. Monitoreo de la calidad del aceite de Tan Delta es la elección de los operadores de equipos de todo el mundo

Tan delta systems

Tan Delta Systems Limited oferece produtos e sistemas que permitem que os operadores de equipamentos para reduzir significativamente os custos operacionais, enquanto simultaneamente aumentar a produtividade. O resultado é maior produtividade operacional e fluxo de caixa.

Nós entendemos o quão importante é a gestão de óleo ideal para o funcionamento eficiente da maioria dos equipamentos; e, portanto, a rentabilidade do seu negócio. Delta Tan monitoramento do estado do óleo usa avançado, protegido por patente, a tecnologia para dizer-lhe a condição exata de qualquer óleo a um alto grau de precisão em tempo real. Esta informação confiável e precisa permite notificação automática e programação de intervalos ideais de manutenção com base em necessidades reais. Ao mesmo tempo, o nosso sistema fornece um sistema de alerta precoce altamente eficaz e confiável para quaisquer problemas inesperados que podem levar a desgaste prematuro e equipamentos ou inesperado e ou fracasso.

Nossas soluções de trabalhar com qualquer tipo de óleo e são fáceis de ajustar a qualquer equipamento que opera em qualquer ambiente. Delta Tan monitoramento da qualidade do óleo é a escolha dos operadores de equipamentos de todo o mundo.

Tan delta systems


Tan delta systems

يوفر تان دلتا سيستمز ليمتد المنتجات والأنظمة التي تمكن مشغلي المعدات لخفض كبير في تكاليف التشغيل مع زيادة الإنتاجية في وقت واحد. تم تحسين الإنتاجية نتيجة التشغيل والتدفق النقدي.ونحن نفهم مدى أهمية إدارة النفط المثلى للكفاءة تشغيل معظم المعدات؛ وبالتالي فإن ربحية عملك. تان دلتا حالة النفط مراقبة يستخدم المتقدمة، وبراءات الاختراع المحمية والتكنولوجيا ان اقول لكم حالة بالضبط من أي زيت على درجة عالية من الدقة في الوقت الحقيقي. تمكن هذه المعلومات موثوقة ودقيقة الإخطار التلقائي وتحديد مواعيد فترات الصيانة المثلى على أساس الحاجة الفعلية. وفي الوقت نفسه يوفر نظامنا نظام إنذار مبكر فعالة للغاية ويمكن الاعتماد عليها لأي مشاكل غير متوقعة مما قد يؤدي إلى سابق لأوانه وغير متوقع أو ارتداء معدات وأو الفشل.حلولنا تعمل مع أي نوع النفط وسهلة لتناسب أي معدات تعمل في أي بيئة. تان دلتا مراقبة نوعية النفط هو اختيار مشغلي المعدات في جميع أنحاء العالم.

Tan delta systems


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