GB/T 20524-2018Agriculture and forest microclimate measuring instrument (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 20524-2006 "Agricultural and Forestry Microclimate Observatory". This standard is compared with GB/T 20524-2006, the main technology The changes are as follows.

--- Revised the terms "gradient observation", "photosynthetically active radiation" and "microclimate" (see 3.1, 3.2 and 3.3, 2006 editions 3.1, 3.2 and 3.3);

--- Added the term "total radiation" (see 3.4);

--- Revised the technical requirements "composition" (see 4.1, version 4.1 of 2006);

--- Revised the technical requirements "structure" (see 4.2.1, 4.2.1 of the 2006 edition);

--- Revised the technical requirements "functions" (see 4.3, 4.3 of the 2006 edition);

--- Change the technical requirements "performance" to "technical indicators", and add technical requirements for water temperature, wind direction and soil moisture in this part.

(See 4.4, 4.4.4, 4.4.5 and 4.4.8, 4.4 of the 2006 edition);

--- Revised the maximum allowable error of the technical indicator "air temperature" (see 4.4.1, 4.4.1 of the 2006 edition);

--- Change the technical indicator "relative humidity" to "air humidity" and modify the maximum allowable error (see 4.4.2, 2006 edition) 4.4.2);

--- Modified the measurement range of the technical index "wind speed", the maximum allowable error, the starting wind speed, and removed the wind resistance (see 4.4.6, 2006). Version 4.4.4);

---Modified the "insulation resistance" in the technical requirements "Electrical Safety" (see 4.5.1, 4.5.1 of the 2006 edition);

--- Revised the technical requirements "maximum allowable error of clock travel time" (see 4.6, 4.6 of 2006 edition);

--- Modified the power supply adaptability "DC power supply" (see 4.7.2, 4.7.2 of the 2006 version);

--- Revised the environmental adaptability "work environment" (see 4.8.1, 4.9.1 of the 2006 edition);

--- Increased test methods "water temperature", "soil moisture" and "wind direction" (see 5.4.1, 5.4.3 and 5.4.4);

--- Change the test method "performance" to "technical indicators", and test the technical indicators such as "air temperature", "air humidity" and "wind direction" The preparation and test methods refer to relevant standards (see 5.4, 5.4 of 2006 edition);

--- Removed the logo "National Production License Mark" (see.2006 version 7.2.4).

1 Scope

This standard specifies the technical requirements, test methods, inspection rules and packaging of the agriculture and forestry microclimate observer (hereinafter referred to as the agriculture and forest microclimate instrument). With signs and shipping, storage, stacking.

This standard applies to the development, production and acceptance of agricultural and forest microclimate instruments.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 191-2008 packaging storage and transportation icon

GB/T 4857.3-2008 Basic test for packaging and transport packages - Part 3

GB/T 6587-2012 General specification for electronic measuring instruments

GB/T 11463 Electronic Measuring Instrument Reliability Test

GB/T 13264-2008 Small batch count sampling test procedures and sampling tables for percentage of non-conforming products

GB/T 13384-2008 General technical conditions for mechanical and electrical product packaging

GB/T 19565-2017 total radiation meter

JJG (meteorological) 002-2015 automatic weather station platinum resistance temperature sensor

JJG (Weather) 003-2011 Automatic Weather Station Humidity Sensor

JJG (meteorological) 004-2011 Automatic weather station wind direction wind speed sensor

3 Terms and definitions

The following terms and definitions apply to this document.