The IIoT always starts with a sensor of some type. After all, things cannot capture states or carry out actions unless they are fitted with sensors. These two activities and a connection to the web, are what make these objects ‘intelligent’ without the help of humans. Keller, a leading manufacturer of pressure sensors, is a key partner when it comes to implementing IIoT solutions. After fitment to an object, sensors are connected to local and global communication networks. The final step in the process is to analyse the data on networked computers, or in the cloud.
Smart tank management with fuel prices updated daily
Alongside water and drinks, fuels are a liquid ideally suited to being managed by means of smart processes. The remote monitoring of fuel levels in heating oil, diesel and petrol tanks is a great support to mineral oil companies, petrol station owners and property managers alike.
Keller has developed the EasyOil remote monitoring system in partnership with a Swiss mineral oil supplier. This system has found its niche in the market and is the key selling point for customers in 80% of the contracts concluded for heating oil deliveries. The order process is thus: the pressure and level of oil are measured at the lowest point in the tank, the current content in litres is calculated according to the shape of the tank and the data is transmitted via GSM. A special feature of this application is the customer-specific software. In addition to the current data such as fill level, consumption and order history, it also contains oil prices, which are updated twice a day. This combined information optimises the order process, allowing customers to stockpile when the price of oil is low or the tanker is close by.
Since there is a risk at petrol stations that an electric spark could cause the gaseous atmosphere to explode, any pressure transmitter taking measurements in this type of environment must be intrinsically safe. For this application, the GSM-3 remote transmitter has been extended to include a box with built-in safety barriers that limit the electric output of the measurement system within the Ex zone, thus preventing sparks.
IIoT processes are highly-customised and are undergoing continuous development. Keller has worked with international companies to develop numerous smart customer-specific total solutions in various sectors and applications.
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