英國(guó)Delta-T便攜式土壤水分儀HH2-ML3 ML3-Kit
產(chǎn)品概述
英國(guó)Delta-T便攜式土壤水分儀HH2-ML3/ML3-Kit是一款科研級(jí)土壤水分測(cè)量工具，采用FDR（頻域反射）原理設(shè)計(jì)，能夠快速準(zhǔn)確地測(cè)量各類(lèi)土壤和多種介質(zhì)的體積含水量。該儀器由HH2讀數(shù)表和ML3傳感器組成，具有便攜性強(qiáng)、操作簡(jiǎn)便的特點(diǎn)，適合野外定點(diǎn)監(jiān)測(cè)或移動(dòng)測(cè)量任務(wù)。其堅(jiān)固的設(shè)計(jì)既支持短期便攜使用，也可長(zhǎng)期安裝于監(jiān)測(cè)點(diǎn)。236
技術(shù)原理
儀器通過(guò)傳感器發(fā)射特定頻率的電磁波，電磁波沿探針傳輸至底部后返回，系統(tǒng)通過(guò)檢測(cè)探頭輸出電壓的變化，結(jié)合土壤介電常數(shù)與含水量的相關(guān)性，計(jì)算出土壤的實(shí)際含水量。這一技術(shù)顯著提升了在鹽堿土等復(fù)雜環(huán)境中的測(cè)量穩(wěn)定性，可適應(yīng)最高2000mS/m電導(dǎo)率的土壤條件。1519
核心組件
ML3傳感器采用圓柱式防水設(shè)計(jì)，配備4根不銹鋼探針，標(biāo)準(zhǔn)電纜長(zhǎng)度為5米（可擴(kuò)展至25米）。HH2讀數(shù)表配備16×2行液晶顯示屏和7個(gè)操作按鍵，支持?jǐn)?shù)據(jù)存儲(chǔ)并通過(guò)RS232接口連接電腦導(dǎo)出數(shù)據(jù)。套裝包含便攜箱、預(yù)打孔工具及備用探針，方便野外作業(yè)。3723
性能特點(diǎn)
• 測(cè)量范圍覆蓋0~100%體積含水量，在0~50%范圍內(nèi)典型精度為±1%
• 內(nèi)置溫度傳感器，溫度測(cè)量精度±0.5℃（0~40℃）
• 改進(jìn)的白色外殼設(shè)計(jì)有效降低輻射熱影響
• 支持?jǐn)?shù)據(jù)導(dǎo)出至Excel表格，便于后續(xù)分析61624
應(yīng)用領(lǐng)域
廣泛應(yīng)用于農(nóng)業(yè)科研、灌溉管理、生態(tài)監(jiān)測(cè)等領(lǐng)域，特別適合高爾夫球場(chǎng)、體育場(chǎng)館等精細(xì)化管理的場(chǎng)景。其可靠性和易用性使其成為全球土壤水分研究的常用工具。1523
Product Overview
The Delta-T HH2-ML3/ML3-Kit portable soil moisture meter is a research-grade instrument from the UK, employing FDR (Frequency Domain Reflectometry) technology to measure volumetric water content in various soils and substrates. Comprising an HH2 readout unit and ML3 sensor, this robust system is designed for both portable field use and permanent installation, offering flexibility for moisture monitoring tasks. 2322
Technical Principle
The sensor emits electromagnetic waves through its probes, analyzing the voltage output reflected from the substrate. By correlating dielectric permittivity changes with moisture content, it delivers stable measurements even in saline soils with conductivity up to 2000mS/m. The white housing minimizes solar heating interference. 51419
Key Components
The ML3 sensor features a waterproof cylindrical body with four stainless-steel probes and 5-meter standard cable (extendable to 25m). The HH2 unit includes a 16×2 LCD, 7-button interface, and 227-2186 data point storage capacity. The kit comes with a carrying case, auger tool, and spare probes for field efficiency. 3723
Performance Highlights
• Measures 0~100% volumetric water content with ±1% typical accuracy (0~50% range)
• Integrated temperature sensor (±0.5℃ accuracy at 0~40℃)
• Optimized cable design for easy deployment and transport
• Data export via RS232 for spreadsheet compatibility 61624
Applications
Ideal for agricultural research, precision irrigation, and ecological studies, this system is particularly valued in turf management applications like golf courses and sports fields, combining operational simplicity with reliable performance. 1523
英國(guó)Delta-T便攜式土壤水分儀HH2-ML3 ML3-Kit
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