It is the first system to measure nip pressure, pro?le and importantly the cover temperature while the paper machine is running. The actual conditions in a pressed nip can now be analyzed. The NipVision glass fiber sensors are very small, non-aging, flexible and chemically resistant. They lie inside the cover, so that the roll application and dimensions remain unchanged. The sensors are so sensitive that they can detect the presence of paper in the nip.The information from the sensors are transmitted to a computer which plots the profile across the width of the machine and over time. With specific software the conditions in the nip are shown simultaneously and synchronously. The system is powered through induction, allowing NipVision to constantly transmit information, 24 hours a day, while the paper machine is running.The NipVision is the only system which can measure temperature within the cover, while the paper machine is running.