JB/T 9944-2011Digital readouts for magnetic scale transducers (English PDF)

1 Foreword

JB/T 9944-2011 was issued by Ministry of Industry and Information Technology of the People's Republic of China on 20 December 2011 and has been in force since 1 April 2012.

It replaces the earlier edition JB/T 9944-1999.

The JB/T prefix marks a recommended standard. It is not law in itself: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it.

2 Scope Preview

Digital readouts for magnetic scale transducers are covered by JB/T 9944-2011, a recommended Chinese machinery industry standard. It gives terms and definitions for the magnetic scale digital display instrument, its basic parameters and functions, the requirements on it, electrical safety performance, environmental adaptability, the continuous running test, the test methods, the inspection rules and the provisions for marking and packaging. The standard applies to digital display instruments for magnetic scale linear displacement sensors and magnetic scale angular displacement sensors, which the text calls the DRO. Issued by the Ministry of Industry and Information Technology, it replaces JB/T 9944-1999 and is classified J42 and 17.040.30. Among the standards it quotes are GB 5226.1-2008 and GB/T 9969-2008.

JB/T 9944-2011 falls under ICS 17.040.30, in the field of metrology and measurement.

This catalogue holds 163 other JB/T standards in that field.

In this catalogue, JB/T standards carry edition years from 1967 to 2026.

3 Normative references

GB/T 191-2008 — Packaging - Pictorial marking for handling of goods

GB/T 2423.1-2008 — Environmental testing for electric and electronic products - Part 2: Test methods - Tests A: Cold

GB/T 2423.2-2008 — Environmental testing for electric and electronic products - Part 2: Test methods - Tests B: Dry heat

GB/T 2423.3-2006 — Environmental testing for electric and electronic products - Part 2: Testing method - Test Cab: Damp heat, steady state

GB/T 2423.5-1995 — Environmental testing for electric and electronic products - Part 2: Test methods - Test Ea and guidance: Shock

GB/T 2423.10-2008 — Environmental testing - Part 2: Test methods - Test Fc: Vibration (sinusoidal)

GB/T 3168-1993 — Numerical control of machines. Symbols

GB 4208-2008 — Degrees of Protection Provided By Enclosure (IP Code)

GB/T 4857.5-1992 — Packaging-Transport packages-Vertical impact test method by dropping

GB/T 4879-1999 — Rustproof packaging

GB/T 5048-1999 — Moistureproof packaging

GB 5226.1-2008 — Electrical safety of machinery - Electrical equipment of machines - Part 1: General requirements

GB/T 6388-1986 — Transport package shipping mark

GB/T 6587.8-1986 — Line frequency and voltage tests for electronic measuring instruments

GB/T 9969-2008 — General principles for preparation of instructions for use of industrial products

GB/T 13384-2008 — General specifications for packing of mechanical and electrical product

GB/T 14436-1993 — General Principles of Industrial Product Guarantee Documents

GB/T 17626.2-2006 — Electromagnetic compatibility (EMC) - Testing and measurement techniques - Electrostatic discharge immunity test

GB/T 17626.4-2008 — Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient/burst immunity test

GB/T 17626.5-2008 — Electromagnetic compatibility - Testing and measurement techniques - Surge immunity test

GB/T 17626.11-2008 — Electromagnetic compatibility - Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests

4 Where this standard sits

It cites 21 standards, among them GB/T 191-2008, GB/T 2423.1-2008, GB/T 2423.2-2008, listed in full above.

One other standard in this catalogue cites it: JB/T 9943-2011.

5 About this standard

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

English translation: about 15 pages

6 Related standards

Other editions:

JB/T 9944-1999 (earlier edition)

Standards on related subjects:

GB/T 10932-2024 — Screw thread micrometer

GB/T 1218-2018 — Depth micrometer

GB/T 1957-2006 — Tolerances and general features for plain limit gauges

JB/T 5610-2025 — Laser interferometer

JB/T 9942-2012 — Angle grating encoder

JB/T 9943-2011 — Magnetic linear transducer

7 Classification and status

International classification (ICS): 17.040.30

Chinese Standard Classification (CCS): J 42

Prefix JB/T: recommended standard.