Figure 1 A true all-rounder for level measurement: VEGAPULS 6X – the radar sensor used by RENOLIT both for liquids in small IBCs and bulk solids in the outdoor 23 metre-high silos.
Optimisation of production processes is an ongoing task in plastics manufacturing, and this is also the case at RENOLIT. Traceability and reproducibility of processes are therefore key requirements for the manufacturer. With innovative level and pressure measurement technology from VEGA, important steps are now being taken at RENOLIT, especially towards climate neutrality.
Produced according to individual formulations that best meet customer requirements, RENOLIT’s plastic films and other products represent the highest level of functionality. This requires highly accurate dosing of base materials – such as polymers, additives or colourants – under consistent process and ambient conditions. Since plastics production is very energy-intensive, measuring energy consumption is becoming increasingly important. VEGA sensors for level, flow and pressure play an important role here.
Universal level measurement– one sensor for all container types
Figure 2 Double security: On this process vessel, a VEGAFLEX 81 guided radar sensor ensures precise interface measurement and VEGASWING 63 vibrating level switch provides reliable overfill protection.
At RENOLIT, raw materials are stored in liquid intermediate bulk containers (IBCs) with a capacity of 1,000 litres or in large outdoor silos for bulk solids with a capacity of up to 200 cubic metres. Levels must be monitored with millimetre precision, without opening or modifying the containers. The VEGAPULS 6X monitors a wide variety of measuring points, ensuring correct quantities of each component are supplied at all times. Since RENOLIT started using VEGAPULS 6X universally, procurement has become much easier – optimal stocking ensures production runs efficiently and without interruption.
Energy savings thanks to flow measurement with pressure sensors
Optimal raw material storage isn’t the only source of significant savings potential. Along more than 300 metres of PVC film production line, energy consumption is continuously monitored. A key contribution comes from the temperature control units of the calender rollers, where three VEGADIF 85 differential pressure transmitters precisely monitor the flow of heating water – ensuring optimal temperature conditions, consistent product quality, and thermal energy consumption closely aligned with actual demand.
Figure 3 Economical and accurate pressure measurement technology: To ensure product quality, the flow rate of heating water is precisely monitored with VEGADIF 85 differential pressure transmitters. This measurement also guarantees that the thermal energy input precisely matches the requirement.
The transmitters are each mounted with a gate valve, allowing servicing or replacement without interrupting the ongoing process. With two VEGADIF 85 sensors, static pressure and differential pressure can be measured simultaneously – an advantage, as static pressure is an important component for optimal process flow in the calendar, now monitored without additional sensors
Tracking down remaining energy guzzlers – with VEGA measurement technology
New software modules optimising the standby mode of all electrical devices have allowed RENOLIT to reduce energy loss by 60 percent. To reduce consumption further, the company has left no stone unturned in optimising remaining energy guzzlers like cooling and heating processes. RENOLIT will continue to rely on VEGA’s level and pressure instrumentation – and thus on exact, reliable measured values that make end products traceable and indicate where, when, and at what temperatures and speeds the plastics were produced.
Curious to learn more? Meet our team of friendly industry experts at CHEMUK 2026. On Stand G20, we will have live demonstrations of point level detection systems, guided wave radar, non-contact radar, pressure measurement solutions and more. Bring us your toughest measurement challenges, and let’s solve them together.
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