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GB/T 37250-2018 PDF English

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GB/T 37250-2018: Test method for response time of functional ceramics for oxygen sensor
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Basic data

Standard ID	GB/T 37250-2018 (GB/T37250-2018)
Description (Translated English)	Test method for response time of functional ceramics for oxygen sensor
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	Q32
Classification of International Standard	81.060.30
Word Count Estimation	6,646
Date of Issue	2018-12-28
Date of Implementation	2019-11-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration

Similar standards

GB/T 27979| JC/T 848.1| GB/T 37583|GB/T 37246|

GB/T 37250-2018: Test method for response time of functional ceramics for oxygen sensor

---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.
Test method for response time of functional ceramics for oxygen sensor ICS 81.060.30 Q32 National Standards of People's Republic of China Functional ceramic response time test method for oxygen sensors Published on.2018-12-28 2019-11-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Building Materials Federation. This standard is under the jurisdiction of the National Industrial Ceramics Standardization Technical Committee (SAC/TC194). This standard was drafted. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai Huaxun New Materials Technology Co., Ltd., Shanghai Applied Technology Xue, Shandong Industrial Ceramics Research and Design Institute Co., Ltd. The main drafters of this standard. Xia Jinfeng, Zhou Guohong, Zhan Hongqiang, Lu Jiashen, Zhang Wei, Gao Jianhua, Li Lei, Chen Changzhu, Jiang Danyu. Functional ceramic response time test method for oxygen sensors

1 Scope

This standard specifies the terms and definitions, principles, equipment, test equipment, specimens and tests for functional ceramic response time tests for oxygen sensors. Gas, test procedures and test reports, etc. This standard applies to functional ceramics for oxygen sensors.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 15289 Digital Storage Oscilloscope General Specification GB/T 20727 Measurement of fluid flow in closed pipes Thermal mass flowmeter

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Response time responsetime Oxygen sensor output voltage from 300mV to 600mV and from 600mV to a given gas flow rate and flow rate The time required for the 300mV change.

4 Principle

When the fuel burns, as the air-fuel ratio changes, the oxygen concentration also changes, resulting in 0mV~ on the chip oxygen sensor. The electromotive force varies between 1000 mV. This change lags behind the change in air-fuel ratio, which is the response time. Air-fuel ratio change The response time is characterized by the change time of the electromotive force.

5 equipment

5.1 oscilloscope The oscilloscope should meet the requirements specified in GB/T 15289. 5.2 Gas mass flow meter Gas mass flow meters that meet the requirements of GB/T 20727 are mixed with different concentrations of oxygen (propane) and nitrogen, or air-fueled. More than a controllable fuel engine.

6 test device

The test device is shown in Figure 1. The installation distance of the gas generator and sensor should be less than 1m. Gas flow in a gas generating device ...

GB/T 37250-2018 Cover page