Electrical noise, also known as electromagnetic interference, can destroy a clean signal from your measurement instrumentation (such as level sensors and pressure transducers). Protecting your sensors from electrical noise is a top priority. Luckily, this is a fairly simple task in most cases.
There are a couple of ways to keep electromagnetic interference (EMI) at bay. You need to use properly shielded cable, you must be careful when routing your cables, and your sensors need to be grounded properly. Finally, it’s important that the signal output is appropriate for the electrical environment.