VORRICHTUNG ZUR MESSUNG DES LINIENINTEGRALS EINER OERTLICH VERAENDERLICHEN MESSGROESSE.

摘要

The device uses an optical fibre extending along the measuring path so that its optical characteristic varies locally in accordance with the locally varying parameter value. The light passed through the optical fibre is detected via a detector coupled to an integrator providing an output corresponding to the line integral. Pref. a second optical fibre extends along the same measuring path, its output used to correct the integral for external interference.