| 摘要 |
FIELD: machine building. ^ SUBSTANCE: flow metre consists of case (1) with calibrated channel, wherein there is installed turbine (8) and inductive sensor in form of coil of inductivity (12) with core (11). A direct magnet is secured on the core. Coil (12) envelopes part of core (11) projecting above the case; the core is built-in to a wall of the case and comes through with a minimal diametre gap to periphery of screw lugs (10) of the turbine. Depending on medium the core can be covered with anti-corrosion coating. The case of the flow metre is made out of material with essentially lower magnetic permeability, than materials of the core and screw lugs (10), while diametre of the core is manifold less, than thickness of the case (1) and less, than a pitch between similar coils of the turbine. The inductivity coil is electrically tied with a pulse counter through amplifier-signal shaper (16). ^ EFFECT: upgraded accuracy and reliability of measurement. ^ 4 cl, 1 dwg |
