技術(shù)參數(shù)
SM300土壤水分分析儀、檢測(cè)儀用途：
該儀器能夠?qū)Ω黝愅寥篮投喾N介質(zhì)的水分進(jìn)行測(cè)量，可以方便地連接到多種數(shù)據(jù)采集器、控制器和讀數(shù)表上，作為水分定點(diǎn)監(jiān)測(cè)或移動(dòng)測(cè)量的基本工具。SM300土壤水分溫度傳感器是一款的研究級(jí)土壤水分溫度傳感器，其體積含水量測(cè)量結(jié)果可以達(dá)到2.5%。SM300不僅可以適應(yīng)市場(chǎng)上多種控制器、數(shù)據(jù)采集系統(tǒng)的要求。低廉的價(jià)格使SM300土壤水分溫度傳感器能夠更廣泛地應(yīng)用在農(nóng)業(yè)生產(chǎn)領(lǐng)域。設(shè)計(jì)堅(jiān)固，不僅能夠作為便攜式儀器使用，而且能夠長(zhǎng)期安裝。作為便攜式儀器使用時(shí)，還能夠深入土鉆孔中，及時(shí)方便地測(cè)量剖面土壤水分溫度含水量。
SM300土壤水分分析儀、檢測(cè)儀特點(diǎn):
同步測(cè)量土壤水分和溫度
價(jià)格低廉，應(yīng)用領(lǐng)域廣泛
溫度和鹽分穩(wěn)定性高
容易和數(shù)據(jù)采集器進(jìn)行連接
SM300土壤水分分析儀、檢測(cè)儀組成:
HH2水分讀數(shù)表：讀取探頭水分測(cè)量值
可讀取和儲(chǔ)存數(shù)據(jù)；
水分探頭：圓柱式防水探頭；
2根不銹鋼探針；
軟件：數(shù)據(jù)與儲(chǔ)存，儲(chǔ)存文件直接可以導(dǎo)入EXCEL
便攜箱。
SM300土壤水分分析儀、檢測(cè)儀技術(shù)規(guī)格：
土壤水分含量 | |
測(cè)量范圍 | 0~50% vol可保證；可達(dá)到100%但是會(huì)降低測(cè)量 |
測(cè)量 | ±2.5% |
鹽分范圍 | 50~1000ms/m |
溫度范圍 | 0~60℃可保證 |
輸出 | 0~1.0V差分 |
感應(yīng)區(qū)域 | 約55×70mm直徑 |
土壤溫度 | |
±0.5℃ | |
測(cè)量范圍 | 0~40℃可保證測(cè)量 |
輸出 | 電阻5.8~28KΩ（10K精密電阻） |
常規(guī) | |
供電 | 5~14V，1秒約18mA |
防護(hù)等級(jí) | IP68 |
尺寸 | 143×40毫米直徑 |
重量 | 0.1Kg |
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SM300 - Soil Moisture and Temperature Sensor
· New research grade sensor
· Soil moisture AND temperature
· ±2.5% accuracy
· Good temperature and salinity stability
· Easy data logger connection (0 - 1V DC)
The SM300 Soil Moisture Sensor offers convenience and cost saving by combining soil moisture and temperature measurement. It can be used in all soil types, including saline soils. Engineered for reliability and high performance, the SM300 is well suited to both research and agricultural applications.
The SM300 Soil Moisture Sensor is a dual purpose soil moisture probe - it can be used both with the HH2 Meter for instant readings, or left in-situ for continuous monitoring with a data logger
Data logging
The SM300 Soil Moisture Sensor is compatible with all Delta-T Devices Loggers and its 0 to 1V DC output can be handled by most other types of logger. Temperature is measured by a 10k precision thermistor mounted in the sensor body - the SM300 should be fully buried to accurately measure soil temperature
Instant readings with the SM300 Kit
The SM300 Soil Moisture Sensor can be used with the Delta-T HH2 hand-held Moisture Meter in the SM300 Soil Moisture Kit to take instant moisture measurements (but the HH2 does not display temperature readings - the equilibration time would be too slow for instant measurements).
Easy installation
The SM300 Soil Moisture Sensor is buriable and its cylindrical shape makes it easy to install in augered holes (45mm diameter).The threaded base of the sensor can be connected to optional 50cm and 100cm extension tubes. The sharp twin pin design minimises soil and substrate disturbance and allows for superior contact for more accurate measurements.
Research
The SM300 Soil Moisture Sensor measures volumetric soil moisture content with 2.5% accuracy and temperature with 0.5 deg C accuracy. It offers precision and reliability at an affordable price.
Irrigation
Accuracy and ease of use make SM300 Soil Moisture Sensors well suited to irrigation applications. Readings can be used to optimise irrigation scheduling, or the SM300 can be installed as part of an automatic irrigation system. The sensor's compact size allows it to be installed in plant pots or grow bags.
SM300 Soil MoistureSensor improvements
The SM300 incorporates the following improvements over the earlier SM200 design:
? Improved ±2.5% accuracy
? Temperature sensor included
? White body to reduce solar heating effects
? Robust M12 connectors and cabling
SM300 Specifications
[1] Accuracy figures are quoted at an expanded uncertainty coverage level of k=2 and calculated using standard Monte Carlo techniques. [2] Maximum cable lengths: 100m for GP1 and DL6 data loggers, 100m for DL2e water content measurement, 25m for DL2e temperature. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
