Supercharge Your Innovation With Domain-Expert AI Agents!

Gauge block upright isothermal measuring method for calibrating or correcting digital-display height indicator indication error

A technology of indication error and measurement method, applied in the field of temperature measurement, can solve problems such as difficulty in meeting requirements in workshops, and achieve the effects of low cost, convenient and quick taking and placing of measuring blocks, and simple structure

Active Publication Date: 2012-06-06
YUNNAN INST OF MEASUREMENT TEST TECH RES
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the reality is that there are very few such laboratories, and ordinary laboratories cannot meet the requirements, and it is even more difficult to meet the requirements in the workshop.

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
  • Gauge block upright isothermal measuring method for calibrating or correcting digital-display height indicator indication error
  • Gauge block upright isothermal measuring method for calibrating or correcting digital-display height indicator indication error
  • Gauge block upright isothermal measuring method for calibrating or correcting digital-display height indicator indication error

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: Calibrate a 1000mm altimeter whose MPE is (3+L / 300) μm. In the laboratory, the instrument to be calibrated is placed on a 00-grade granite reference plate, and then according to the measuring range of the altimeter to be calibrated, select 50mm, 150mm, 300mm, 400mm, 500mm, 600mm, 700mm, 800mm, 900mm, 10 standard gauge blocks of 1000mm, put the gauge block into the gauge block groove of the vertical isothermal device of the gauge block, and place the 10 standard gauge blocks upright on the reference plate close to the digital display altimeter through the vertical isothermal device of the gauge block, Synchronously isothermal with the digital display altimeter until the temperature difference between the two at the same height is less than 0.2°C, and then calibrate the indication error of the instrument according to the method stipulated in the national metrology verification regulations.

[0023] Such as figure 1 , 2, 3, the gauge block upright isotherma...

Embodiment 2

[0028] Example 2: An 800mm altimeter whose MPE is (2+L / 300) μm is tested. In the laboratory, place the tested altimeter on the 00 grade granite reference plate, and then select 50mm, 150mm, 300mm, 400mm, 500mm, 600mm, 700mm, 800mm according to the measuring range of the tested digital display altimeter 8 standard gauge blocks, put the gauge block into the gauge block groove of the vertical isothermal device of the gauge block, and place the 8 standard gauge blocks upright on the reference plate close to the digital display altimeter through the vertical isothermal device of the gauge block. When the digital display altimeter isothermally synchronized until the temperature difference between the two at the same height is less than 0.15°C, then the display error of the instrument is verified according to the method stipulated in the national metrology verification regulations.

[0029] Such as Figure 4 , 5 As shown, the gauge block upright isothermal device used in the test i...

Embodiment 3

[0030] Embodiment 3: Calibrate a 1000mm altimeter whose MPE is (1.4+L / 400) μm. In the workshop, place the calibrated altimeter on the 00-grade granite reference plate, and then select 50mm, 100mm, 125mm, 150mm, 175mm, 200mm, 250mm, 300mm according to the measurement range of the calibrated digital display altimeter , 15 standard gauge blocks of , 400mm, 500mm, 600mm, 700mm, 800mm, 900mm, and 1000mm, put the gauge block into the gauge block groove of the gauge block vertical isothermal device, and tighten the 15 standard gauge blocks through the gauge block vertical isothermal device The digital display altimeter is placed upright on the reference plate and isothermally synchronized with the digital display altimeter until the temperature difference between the two at the same height is less than 0.1°C, and then according to the method stipulated in the national metrology verification regulations, the indication value error of the instrument to calibrate.

[0031] The gauge bl...

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 gauge block upright isothermal measuring method for calibrating and testing, belonging to the technical field of calibrating and testing. A calibrated or corrected instrument is put on the reference surface plate of a laboratory or a workshop, a gauge block with the corresponding size is chosen according to the measurement range and is put into an upright isothermal device to be arranged on the reference surface plate in an upright manner by abutting a tested instrument; the gauge block and the calibrated instrument are upright isothermal until temperature difference of the gauge block and the calibrated instrument is smaller than an allowable value, and then instrument calibration or correction is carried out with the method specified by JJG. The adopted gauge block upright isothermal device is a rectangular block structure or columnar structure device which is provided with a plurality of parallel gauge block slots vertical to the bottom edge, a metering testing standard gauge block can be arranged in the slot and is kept to be upright. The method can cause the gauge block and the calibrated instrument to be in the same upright temperature zone as muchas possible, which not only can lower requirements on calibrating or correcting temperature environment, but also can improve the calibrating or correcting result reliability; in addition, the invention has the advantages of simple structure and low cost, is convenient, quick, practical, effective and the like.

Description

Technical field [0001] The invention relates to an upright isothermal measurement method of a measuring block for verifying or calibrating the indication error of a digital display altimeter, and belongs to the technical field of measurement and testing. Background technique [0002] According to the provisions of the National Metrology Verification Regulations JJG929-1998 "Digital Display Altimeter", when verifying or calibrating the digital display altimeter, it is necessary to put the gauge block (the standard device used for verification or calibration) together with the instrument to be inspected. After isothermal for a certain period of time, the verification or calibration is carried out. For instruments whose maximum allowable error (MPE) does not exceed (3+L / 300) μm, it needs to be placed in a room with an ambient temperature of (20±1) °C and a temperature change of no more than 0.5 °C per hour, and isothermal for more than 12 hours; Instruments with a allowable er...

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): G01B5/02
Inventor 陈明王振军
Owner YUNNAN INST OF MEASUREMENT TEST TECH RES
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com