Materials that are made in filaments or webs have to be produced under very carefully controlled conditions to ensure quality and consistency of the product over time. This is not a simple process, and it requires precision measurement of tension throughout the manufacturing process.
A tension transducer may also be known as a tension load cell, but they are the same component of the web tension control system. Any manufacturing and production of paper, laminates, coatings, steel and film will use this technology to maintain the correct tension range.
The load cell is the component that is able to measure changes in the system and convert that change into an electronic signal. This signal is then sent through to an analog or digital indicator where it is displayed. In a closed loop system, these changes recorded by the tension transducer are also used to adjust the tension by engaging and disengaging a brake to maintain the correct speed and tension on the roll for precise operation.
What to Consider
There are several different factors to consider when choosing a load cell for the system. These include:
- Manufacturer reputation – while this may not be the most costly component of the web tension control system, if it is not accurate, durable and built to stand up to the work conditions it will result in low-quality performance. The reputation of the manufacturer is a good indicator of their design, load cell performance and their ability to provide the right products for your industry.
- Capacity – the top manufacturers will provide a range of different tension transducer models to allow for different capacity ranges. By understanding what you need now in capacity and what you will need in the future, it is possible to select a load cell you can use for decades.
- Overload protection – this is critical as exceeding the maximum capacity of the load cell can easily occur. Some manufacturers offer up to 1000% overload protection which will help to extend the life cycle of the load cell and reduce the risk of failure.
Compare options and companies before choosing the right component. Check also for compatibility with your current system if you are in the market for a replacement part.
