Apollo Ultrasonic  oil tank gauges

Established by the company’s Managing Director, Gerard Jones – every Apollo product benefits from over 4 decades experience in the design, development and manufacture of fuel and liquid storage products.

The launch of the original Apollo Ultrasonic, Dunraven Systems revolutionised the storage tank monitoring sector in Ireland, the UK and beyond. Benefitting from contactless, wireless, measurement technology, the Apollo Ultrasonic quickly became a byword for reliable and dependable storage tank monitoring.

Today’s Apollo range builds upon the success of the original Apollo Ultrasonic. Apollo products are now specified and fitted by more independent storage tank manufacturers than any other comparable product. Dunraven Systems’ current product portfolio includes the revolutionary Apollo Smart heating oil energy monitor; Apollo Visual, which uniquely offers both local and remote measurement capability as standard; and of course Apollo RMS, the depot based, remote tank monitoring system.

As a business, Dunraven Systems is committed to continuous product innovation and service enhancement – a commitment that ensures the company will continue to maintain its position at the forefront of industry developments.


The introduction of the Apollo Ultrasonic electronic oil tank contents gauge almost a decade ago, transformed the measurement and monitoring of storage tanks across Ireland and the UK.

In the intervening years, the company can rightfully claim to have established a number of industry and technological firsts:

Apollo Ultrasonic The first ultrasonic oil tank contents gauge to be successfully commercialised in Ireland and the UK.

Apollo RMS The first, depot based remote tank monitoring system to utilise contactless, ultrasonic tank measurement technology

Apollo Visual The first and only oil tank contents gauge to benefit from inbuilt local and remote reading capabilities as standard.

Apollo MaxFill Designed for use with any Apollo tank monitor, MaxFill is the only in-production handheld, ultrasonic tank monitoring system.

Apollo Smart The world’s first heating oil energy monitor, allowing oil heating consumers to monitor energy consumption, tank levels, fuel costs and CO2 emissions.

As an acknowledged market leader in the design and development of ultrasonic fuel tank monitors, Dunraven Systems recognizes that you can’t stay ahead by standing still. Hence, the company’s commitment to product research and development is ongoing, and the company continues to invest in and prioritise the development of new product technologies.