CJ/T 112-2008Integrated circuit card diaphragm gas meter (English PDF)

Foreword

This standard shall, from the date of implementation, replace CJ/T 112-2000

"Integrated circuit card diaphragm gas meter for household use".

In the development process, this standard makes reference to EN 1359 "Gas

meter - Diaphragm gas meters". This standard is the revision of CJ/T 112-2000

"Integrated circuit card diaphragm gas meter for household use". As compared

with CJ/T 112-2000, the main changes are as follows.

- ADD the application scope of integrated circuit card diaphragm gas meter;

INCREASE the maximum flow rate from 10 m3/h to 160 m3/h; CHANGE

the standard name into "Integrated circuit card diaphragm gas meter";

- CANCEL the memory card;

- CANCEL the IC card gas meter using AC power supply;

- ADD the service life requirements for built-in battery;

- ADD the appearance requirements for IC card gas meter;

- In the environmental requirements, ADD the requirements for IC card gas

meter storage temperature;

- CHANGE the enclosure protection level from IP31 to IP53;

- ADD the electrostatic protection requirements;

- ADD the quiescent current and maximum operating current requirements;

- ADD the conversion error requirements;

- ADD the security requirements.

This standard was proposed by the Ministry of Housing and Urban-Rural

Development Standard Quota Study Institute.

This standard shall be under the jurisdiction of the Ministry of Housing and

Urban-Rural Development Urban Gas Standard Technical Unit - North China

Municipal Engineering Design and Research Institute.

The main drafting organizations of this standard. Urban Construction Research

Institute, Dandong Sikai Electronic Development Co., Ltd., Zhengzhou Anran

I&C Equipment Co., Ltd., Hangzhou Pioneer Electronic Technology Co., Ltd.,

Shandong Jining Lanwei Intelligent Network Center, Dandong Thermal

Integrated circuit card diaphragm gas meter

1 Scope

This standard specifies the technical requirements, test methods, inspection

rules, marking, packaging, transportation and storage of IC card diaphragm gas

meters with a maximum flow of 160 m3/h.

This standard is applicable to the design, production, testing and acceptance of

IC card diaphragm gas meter (hereinafter referred to as gas meter).

2 Normative references

The provisions in following documents become the provisions of this Standard

through reference in this Standard. For the dated references, the subsequent

amendments (excluding corrections) or revisions do not apply to this Standard;

however, parties who reach an agreement based on this Standard are

encouraged to study if the latest versions of these documents are applicable.

For undated references, the latest edition of the referenced document applies.

GB/T 2423.17 Environmental testing for electric and electronic products -

Part 2. Test method - Test Ka. Salt mist (GB/T 2423.17-1993, eqv IEC

60068-2-11.1981)

GB/T 2828.1 Sampling procedures for inspection by attribute - Part 1.

Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot

inspection (GB/T 2828.1-2003, ISO 2859-1.1999, IDT)

GB/T 2829 Sampling procedures and tables for periodic inspection by

attributes (Apply to inspection of process stability)

GB/T 4208-1993 Enclosure protection class (IP code) (eqv IEC 529.1989)

GB/T 6968 Diaphragm gas meters

GB/T 17626.2-2006 Electromagnetic compatibility (EMC) - Testing and

measurement techniques - Electrostatic discharge immunity test (GB/T

17626.2-2006, IEC 61000-4-2.1995, IDT)

GB/T 17626.3-2006 Electromagnetic compatibility (EMC) - Testing and

measurement techniques - Radiated radio frequency electromagnetic field

immunity test (GB/T 17626.3-2006, IEC 61000-4-3.2002, IDT)

CJ/T 3074-1998 Electronic controller of household gas burning appliances

CJ/T 3075.2-1998 Laboratory of gas burning appliances - Test equipment

and device

JJG 577 Verification regulation of diaphragm gas meter

3 Terms and definitions

The following terms and definitions apply to this standard.

3.1

IC card diaphragm gas meter

It refers to the gas meter which uses the diaphragm gas meter as the basic

gas meter and the IC card as the media and is added with controller, having

the function of gas pre-purchase.

3.2

Basic gas meter

It refers to the diaphragm gas meter used in the IC card diaphragm gas meter.

3.3

Control unit

It refers to the device used to read the basic gas meter data, display and

control.

3.4

Minimum operating voltage

It refers to the minimum set voltage to ensure the normal operation of

controller.

3.5

Total pressure loss

It refers to, after the gas meter is installed with control valve, the pressure

loss between the gas inlet and gas outlet under the specified conditions.

3.6

30 N, the connection line and the connection part shall not be separated or

deformed.