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张力计


土壤水分张力计使用说明

Soil moisture tensiometer instructions

用途:

Application:

张力计是一种较为简单的土壤湿度仪器,它可以测量土壤中任意点的土壤湿度情况。

Tensiometer is a simple soil moisture measuring instrument that measures soil moisture at any point in the soil.

仪器操作简单,易于保养,是一种用于灌溉管理的可靠仪器。

The instrument is easy to operate and easy to maintain, making it a reliable instrument for irrigation management.

内容:

Content in prodcut package:

土壤张力计由两个部件组成:

The soil tensiometer consists of two parts:

张力计探测管 - 由聚碳酸酯管和透气陶瓷头加密封橡胶塞组成。在管内注入适量的水后埋入土壤中使用。

Tensiometer probe tube - consists of a polycarbonate tube , a permeable ceramic head and a sealing rubber stopper.
 Fill water into the tube and use it in the soil.

仪表 - 准确的不锈钢指针直读仪表,用于从探测管读数。(0-100 Kpa

Negative pressure meter  -    Stainless steel pointer direct reading meter for reading from the detector tube.
(0-100 kPa)  

特点:

Product characteristic :

低价格的测管。这意味着可以设置较多的观测点,易于更换补充。

Low price tube. More observation points can be set and it is easy to replace and add detector tube.

不锈钢指针直读仪表用于各张力计探测管的读数,直观,快速,准确。

The stainless steel pointer direct reading meter is used for the reading of tensionmeter on the detection tube,
which is intuitive, fast and accurate.

采用耐候性聚碳酸酯深管,强度高,寿命长。各部件均可拆卸,易于更换维护。

The weather resistant polycarbonate tube has high strength and long service life. Each component can be removed
for easy replacement and maintenance.

标准探测管的长度为: 1530456090120cm  (测量深度), 可以满足大部分情况的使用要求。

The length of the standard detector tube is 15, 30, 45, 60, 90, 120cm (measuring depth), which can meet the
requirements of most cases.

特殊长度可根据用户要求加工。

Special length can be produced according to customer requirements.

原理及使用方法:

Principle and method of use:

当土壤变干,与陶瓷头接触的土壤表面张力势趋于将管内的水分吸出,从而在管内顶部形成局部真空。当灌溉或降雨后,

水分被吸回管内使真空减少。

When the soil dries, the surface tension of the soil in contact with the ceramic head tends to suck out the
moisture in the tube, creating a partial vacuum at the top of the tube. When irrigated or rained, moisture is
drawn back into the tube to reduce the vacuum.

高真空值读数表明土壤干燥,读数偏低则表明土壤湿润。通常,在灌溉区域应布置一定数量的监测点。

High vacuum readings indicate that the soil is dry and low readings indicate that the soil is wet.

Usually, a certain number of monitoring points should be arranged in the irrigation area.

每一个点应有2-3支不同长度的张力计管。这样不仅可以了解每个点不同深度的水分含量而且可以了解水分在灌溉期间的运移情况。
There should be 2-3 different lengths of tension gauge tubes at each point. This not only allows you to understand
the moisture content at different depths of each point but also to understand the movement of water during irrigation.

该张力计系统仅需少量维护便可多年可靠使用。仪表无需标定和置零。

The tensiometer system can be used reliably for many years with minimal maintenance.

The meter does not need to be calibrated and zeroed.

使用时在田间定期直读并记录。例如每周两到三次,然后绘制成土壤水分变化曲线图。

Regularly read and record in the field during use. For example, two to three times a week, and then plotted as
a soil moisture curve.

测试结果应与从农业部门了解到的不同作物需水量结合,是灌溉者能够估计下一个灌溉周期的需水量以及能在灌溉日的前几天

做好准备。

The test results should be combined with the water requirements of the different crops . So the irrigator can
estimate the water demand for the next irrigation cycle and can be prepared before the irrigation .

负压值

Negative pressure value

建议土壤水分补偿点  

Recommended soil moisture compensation point

建议土壤水分饱和点

Recommended soil water saturation point



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