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JJG 574-2004 English PDF

US$369.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 574-2004: Verification Regulation of Impression Tonometers
Status: Valid

JJG 574: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 574-2004	English	369	Add to Cart	3 days [Need to translate]	Verification Regulation of Impression Tonometers	Valid	JJG 574-2004
JJG 574-1988	English	519	Add to Cart	4 days [Need to translate]	Verification Regulation of Impression Tonometers	Obsolete	JJG 574-1988

PDF similar to JJG 574-2004

Standard similar to JJG 574-2004

GB/T 36126 JJG 577 GB/T 1885 JJG 564 JJG 567

Basic data

Standard ID	JJG 574-2004 (JJG574-2004)
Description (Translated English)	Verification Regulation of Impression Tonometers
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A53
Classification of International Standard	17.100
Word Count Estimation	14,171
Date of Issue	2004-06-04
Date of Implementation	2004-12-01
Older Standard (superseded by this standard)	JJG 574-1988
Issuing agency(ies)	State Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to indentation tonometer (hereinafter referred to as tonometer) the initial verification, testing and use of follow-up inspection.

JJG 574-2004: Verification Regulation of Impression Tonometers

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Verification Regulation of Impression Tonometers National Metrology Verification Regulations of the People's Republic Indented tonometer Released on June.2004 Implementation of.2004-12-01 The General Administration of Quality Supervision, Inspection and Quarantine issued Indentation tonometer verification procedure Imp Replace JJG 574-1988 This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on June 4,.2004, and Implemented on December 1,.2004. Focal Point. National Pressure Measurement Technical Committee Drafting unit. Shanghai Institute of Metrology and Testing Technology This regulation entrusts the National Pressure Measurement Technical Committee to explain Drafters of this procedure. Wang Jinsuo (Shanghai Institute of Metrology and Testing Technology) Tu Limeng (Shanghai Institute of Metrology and Testing Technology) Dai Xiaohua (Shanghai Institute of Metrology and Testing Technology)

1 Scope (1) 2 Overview (1) 3 Metrological performance requirements (1) 3.1 Quality tolerance (1) 3.2 Sliding performance of the needle in the leg tube (1) 3.3 indication tolerance (1) 4 General technical requirements (3) 4.1 Appearance (3) 4.2 Zero alignment deviation (3) 5 measuring instrument control (3) 5.1 Verification conditions (3) 5.2 Verification project (4) 5.3 Verification method (4) 5.4 Verification result processing (5) 5.5 Verification cycle (5) Appendix A Indentation tonometer verification record format (6) Appendix B Verification Certificate (inside page) format (8) Appendix C Format of the verification result (inside page) (9) Indentation tonometer verification procedure

1 Scope

This procedure is applicable to the first verification, subsequent verification and use of the indentation tonometer (hereinafter referred to as tonometer). Test.

2 Overview

The tonometer is a special instrument for measuring the intraocular pressure of the human body. Its working principle is to target the cornea according to the pressure of a certain quality. Intraocular pressure is measured indirectly by the depth of depression, and each square on the scale is equivalent to a corneal depression depth of 1/20 mm. root According to the indentation depth value and the quality of the needle and the weight, the intraocular pressure value is obtained by checking the eye pressure conversion table. The structure of the tonometer is shown in Figure 1.

3 Metrological performance requirements

3.1 Quality tolerance 3.1.1 The assembly quality of the tonometer fixed weight, needle, hammer bow and pointer is 5.5g, and the allowable deviation should be in accordance with Table 1. Provisions. Table 1 Pointer indicates scale tolerance /g ±0.20 3.1.2 The total mass of the tonometer (except the handle) is 16.5g, and the allowable deviation is ±0.5g. 3.1.3 The weight of the tonometer attached weight should meet the requirements of Table 2. Table 2 Additional weight specification additional weight quality tolerance /g 7.5 2.0 4.5 9.5 ±0.02 3.2 The sliding performance of the needle in the leg tube The tonometer is tilted from the horizontal position. The angle of the needle should be automatically slid down in the leg tube within 28°. There should be no jamming. Or stick to the phenomenon. 3.3 indication tolerance The tonometer measures the indentation depth of the needle (0~0.90)mm, corresponding to the tonometer scale scale (0~18)

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Question 5: Should I purchase the latest version JJG 574-2004?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 574-2004 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.