農業灌溉水頭控制器檢測

農業灌溉水頭控制器檢測項目報價？??解決方案？??檢測周期？??樣品要求？

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GB/T 21402-2008農業灌溉設備.水頭控制器

本標準規定了壓力灌溉系統中水頭控制器的零部件要求以及安裝方法（簡稱為灌溉水頭控制器，其標準尺寸不大于200mm)。本標準僅適用于噴灌和微灌（小型噴灌、滴灌等）系統中水頭控制器的地上零部件。也可適用于一般性的灌溉水頭控制器。在一般性的灌溉水頭控制器上可安裝其他的灌溉控制和指令元件（例如電氣、電子、水力），但不能用于額外元件。本標準不適用于系統和/或元件中的灌溉水頭控制器有防凍要求的情況，例如干筒式水栓或其他形式的水栓。本標準沒有給出組成灌溉水頭控制器的單個元件的特殊設計及操作要求的說明，在其各自相關標準給出詳細說明。對于包含噴射農藥部件系統的灌溉水頭控制器，應設有防回流的元件及噴射檢測閥和其他安全設備（根據當地標準和條款要求），但本標準中沒有包含此類設備要求。

ISO 11738-2021農業灌溉設備. 水頭控制器

This document specifies requirements for the components and method of installation of pressurized irrigation system control heads, referred to hereinafter as irrigation control heads, with a nominal size of up to and including 200 mm (nominal size of an irrigation control head or nominal size of a component). This document is applicable only to the above-ground components of irrigation control heads for sprinkler irrigation and micro-irrigation (mini-sprinklers, drip irrigation, etc.). It is applicable to the basic irrigation control head, on which other irrigation control and command components (electrical, electronic and hydraulic) can be assembled, but does not deal with these additional components. This document is not applicable to systems and/or components that can be required to prevent the water from freezing in the irrigation control head, such as dry-barrel hydrants or other types of hydrants. This document does not specify construction or operating requirements for the indiv