Level gauge zero-position inspection tester

Abstract

The invention discloses a level gauge zero-position inspection tester. The zero-position inspection tester comprises a flat panel and an instrument body, and the instrument body comprises a rectangular base, a core rod and hold-down devices; the two side faces of the rectangular base are two parallel planes and perpendicular to the bottom face, V-shaped grooves are formed in the upper end and the lower end of the middle of the front face of the rectangular base, the center line of the rectangular base is perpendicular to the bottom face and in parallel with a working face at the back side of the rectangular base, and the two hold-down devices are used for pressing the core rod tightly and fixing the core rod into the V-shaped grooves of the rectangular base. The rectangular base and two core standard components of the core rod form the instrument body in an integrated mode, the instrument body is erected on the flat panel by depending on self weight, rigidity is good, and the zero position of a level gauge can be inspected stably and reliably. By means of the technical scheme, an arc-shaped stand column and a complex fastening device of a traditional old level gauge zero-position inspection tester are omitted, and a core rod is further omitted, so that the level gauge zero-position inspection tester has the advantages of being simple in structure, easy to machine and manufacture, convenient to operate, good in rigidity, stable and reliable in measured data, convenient in instrument periodic verification and the like.

Description

technical field [0001] The invention belongs to the field of measuring standard instruments, and relates to a level meter zero-position checker. Background technique [0002] The traditional old-fashioned level zero checker listed in the current national metrology verification regulations includes a flat plate, an arched column, a parallel square column, two mandrels and a fastening device. The bow-shaped column uses a complex fastening device to fix the parallel square column and a mandrel on the flat plate, and the other mandrel is placed on the two V-shaped blocks on the flat plate. When in use, place the bottom plane and the bottom V-shaped surface of the level to be tested on the flat working surface and the mandrel supported by the two V-shaped blocks respectively, and then attach the side flat working surface and the side V-shaped surface of the level to be tested respectively. The side working surface of the closely parallel square column and the outer circular work...

AI Technical Summary

Problems solved by technology

It has a complex structure and is inconvenient to operate. The parallel square column and mandrel are separately fixed on the plate, and the measurement data is unstable due to poor rigidity. It is very troublesome to check

Images