Hexane is highly volatile and flammable. Without accurate measurements, any unexpected pressure variations could mean leaks, overfilling, or vacuum conditions, all of which could pose safety hazards if left unchecked. A competitor’s traditional differential pressure devices, installed to monitor levels of hexane in their bulk storage tank, were a decent solution until the weather changed. The capillary lines would experience measurement drift as the temperature outside changed from cold to hot and back again. As a result, plant operators experienced downtime for recalibration and ran into repeated production snags.