There is more to a load cell than is it an alloy steel load cell or stainless steel load cell? Load cells also have a lot of different sealing types. What’s the difference? How do you choose what load cell to buy?
The majority of us aren’t industry experts on load cell production. But when you comprehend the fundamentals subsequently selecting the best one will be considerably less difficult. Let’s begin with straightforward weighing jobs. At the very least, the majority of load cells are environmentally sealed. What does that suggest? It implies that the internal gauge area is protected with potting, and determined by design you might find either a rubber boot or glued metal plate guarding that location too. Environmentally sealed load cells are designed for simple indoor/outdoor use-not frequent moisture contact. You’ll see these cells produced from a variety of material; aluminum, alloy or stainless-steel.
If your job is at a greater risk for moisture contact you might want to think about a welded seal design. Nearly all welded seal designs are stainless-steel. You’ll find a metal plate or cup welded directly to the gauge area and they can be utilized in many applications where minimal moisture is a factor.
However for those really wet jobs…look for something that’s hermetically sealed. Hermetic sealing implies that something is resistant to gas or air. These exclusively stainless-steel cells not only have a welded seal to safeguard the strain gauge but also extra defense against moisture in the cable entry area-well suited for heavy wash down tasks. With regards to deciding on the best cell there are plenty of other factors to consider too. But this is a basic overview for starters.