Temp. compensation arrangement for bellows gas meter - has temp. dependent arrangement varying transmission ratio by regulating distance between variable coupling plates

摘要

Bellows movement is transferred to a coupling wheel which turns a crank (2), involves varying the transmission ratio of a transmission by a temp. dependent arrangement (15, 16). A continuously variable coupling between transfer (6) and magnetic coupling (30) wheels has a stage coupled to the transfer wheel with a plate (10) contg. a pair (11, 12) of wedge plates. The plates of the pair are always equidistant from a main plane but the distance varies with temp. USE/ADVANTAGE - Ensures temp. compensation over calibration validity period in excess of decade.