Level instrument with magnet indicator tube heating mechanism and its error elimination method

Abstract

The invention relates to a level instrument. The level instrument with magnets and an indicating tube heating mechanism comprises a pedestal, an indicating tube heating structure, a temperature sensorfor detecting the temperature of an indicating tube, and a control unit, wherein the indicating tube is arranged inside the pedestal; a bubble is arranged inside the indicating tube, and the indicating tube is filled with liquid; the indicating tube heating structure comprises a thermally-conductive iron shell enwrapping the indicating tube, a metal scraping fork slidably sleeving the iron shell,and a driving mechanism for driving the metal scraping fork to do reciprocating movement; a yielding slot for observing the position of the bubble is formed in the iron shell; the control unit controls the driving mechanism to drive the metal scraping fork to move when the temperature sensor detects that the temperature of the indicating tube is lower than a set value; accommodating holes are formed in the pedestal; the magnets are arranged inside the accommodating holes. The level instrument has the advantages as follows: a ferromagnet can be reliably fixed, and when the ambient temperatureis relatively low, the indicating tube can be heated; the level instrument solves an error problem, caused by incapability of heating the indicating tube to resist temperature reduction, of the conventional level instrument.

Description

technical field [0001] The invention relates to a level, in particular to a level equipped with a heating mechanism for a magnet indicating tube. Background technique [0002] A spirit level is an instrument used to measure whether an object is level. In the patent document whose publication number is CN101970986A promptly discloses a kind of existing spirit level. The spirit level includes a base, and an indicating tube is arranged in the base, and the indicating tube is provided with air bubbles and filled with liquid. When in use, place the base on the object to be measured, and judge whether the object is level by observing the position of the air bubbles. The accuracy of the level meter is affected by the diameter of the indicating tube. The larger the diameter, the higher the accuracy. The higher the accuracy, the smaller the error, that is, the better the accuracy of the measured data. However, the level meter is suitable for the environment where the temperature i...

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Problems solved by technology

[0003] The invention provides a spirit level which can be reliably fixed on a ferromagnet and can heat the indicator tube when the ambient temperature is low, and is equipped with a magnetic indicator tube heating mechanism, which solves the problem that the existing spirit level cannot heat the indicator tube To resist the problem of error caused by temperature drop

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