Abstract: A cable fill composition for an optical fiber cable, said cable fill composition comprising (i) a Fischer-Tropsch derived base oil; and (ii) a thickening system, wherein the thickening system comprises at least one block copolymer. The cable fill composition of the present invention provides improvements in rheological characteristics, low temperature properties, and colour stability properties, as well as minimizing the levels of additives such as antioxidants and pour point depressants which need to be used.

Abstract: A circuit configuration compensates for disturbance variables in a measurement pickup which has a measured-variable dependent resistance that is added from a fundamental resistance, which is independent of measured variables, and a measuring resistance, which is dependent on measured variables. The fundamental resistance and the measuring resistance are disturbance variable-dependent in opposite directions. A bridge circuit has two measurement pickups using difference evaluation to eliminate the disturbance variable dependency of the fundamental resistance. A bridge voltage controller sets the bridge diagonal voltage in the opposite direction to the disturbance variable dependency of the measuring resistance, and thus compensates for the disturbance variable-dependency of the measuring resistance.