FEED-THROUGH FOR GWR MEASUREMENTS IN TANKS

摘要

A coaxial feed-through device (feed-through 100) for coupling a received process connection (2) to a storage tank (tank 40) including an inner electrical conductor (probe) (10), an outer electrical conductor (20); and a dielectric sleeve disposed between the probe and the outer electrical conductor. The dielectric sleeve is configured to provide an upper coaxial transmission line segment (upper CTL segment) (100a) providing a substantially 50 ohm impedance and a lower coaxial transmission line segment (lower CTL segment) (110b) which includes one or more sub-segments (100 b1 or 100b2, 100b' or 100b'') having an impedance that is at least forty (40%) percent higher as compared to the substantially 50 ohm impedance.