Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Heat conduction mechanism for temperature compensation test device of weighting transducer

A technology of weighing sensor and temperature compensation, applied in the direction of weighing temperature compensation device, weighing equipment testing/calibration, etc. The effect of holding time, saving energy and accelerating heat balance

Inactive Publication Date: 2010-08-11
METTLER TOLEDO (CHANGZHOU) PRECISION INSTR CO LTD +2
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the test, the load cell is directly placed in the thermostat of the test force machine, and the temperature is raised and lowered and kept warm at the above temperatures. After the temperature is balanced, the preload, linearity, repeatability and balance of the loaded weight are performed. The test time for creep characteristics and other tests is generally about 22 hours per piece, and the temperature rise and fall of the load cell and the holding time are about 19 hours. Due to the long auxiliary time of thermal balance, the entire test time is long, not only consumes a lot of energy, Moreover, the production efficiency is low, which is the bottleneck problem of manufacturing load cells at present.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heat conduction mechanism for temperature compensation test device of weighting transducer
  • Heat conduction mechanism for temperature compensation test device of weighting transducer
  • Heat conduction mechanism for temperature compensation test device of weighting transducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] As shown in Figures 1 to 2, the heat conduction mechanism of the load cell temperature compensation test device of the present invention is composed of two groups of conduction clamping mechanisms that are symmetrically installed on the test platform 1 and have the same structure. The conduction clamping mechanism of the present invention It includes a base 2 , a conduction plate 10 , a heat sink 9 , a fan 8 , a cylinder 6 , a bracket 7 and a spring 14 , and the cylinder 6 is installed on the base 2 . In order to adjust the position of the cylinder 6 and meet load cells of different sizes, the rear end of the cylinder 6 is installed on the cylinder mounting plate 4, and the base 2 is L-shaped, as shown in Figures 3 and 4, the vertical position of the base 2 of the present invention There are vertical grooves 2-1 on the plate, and two waist-shaped holes 2-2 on the bottom plate. The connecting bolts are set in the vertical grooves 2-1 of the base 2 and screwed into the scr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a thermal conduction mechanism of a weighting sensor temperature compensating testing device, which consists of two groups of conduction fastening devices symmetrically arranged on a test platform and having same structure, wherein each conduction fastening device comprises a base, a conduction board, a cooling plate, a fan, an air cylinder, a bracket and a spring, the air cylinder is arranged on the base, the piston rod of the air cylinder is connected with the rear part of the bracket, fastening pieces pass through supporting seats at two sides of the cooling plate to be connected in threaded holes at two sides of the bracket in a screwed way, and springs are also arranged between the supporting seats of the cooling plate and the bracket, the rear part of the cooling plate is provided with the fan, and the front end of the cooling plate is provided with the conduction board; two conduction boards on the two conduction fastening devices correspond to each other, and a distance a for placing a weighting sensor is left between the two conduction boards. The invention can enable the weighting sensor to quickly reach thermal equilibrium of tested temperature while carrying out temperature compensation test to the weighting sensor, thereby saving energy and greatly enhancing the test efficiency of the test.

Description

technical field [0001] The invention relates to a heat conduction mechanism of a weighing sensor temperature compensation testing device, belonging to the technical field of weighing sensor temperature compensation testing. Background technique [0002] Even if the load cell uses the same batch of strain gauges, it will cause errors due to the slight temperature difference between the strain gauges. This temperature difference will affect the bridge zero output and sensitivity of the load cell, thereby affecting the weighing accuracy. Therefore, it is usually necessary to perform temperature compensation on the load cell, and the temperature-compensated load cell can only be loaded into the weighing apparatus after being tested. When performing temperature compensation tests on load cells, it is generally necessary to alternate tests under multiple temperature conditions such as -10°C, 20°C and 40°C. In the test process, the load cell is directly placed in the thermostat of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01G23/48G01G23/01
Inventor 何家平方超
Owner METTLER TOLEDO (CHANGZHOU) PRECISION INSTR CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products