EQ15土壤水势测量�?参数-价格-中国粉体罐�/title>

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$(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <div><span><strong><strong>EQ15土壤水势测量�?/strong></strong></span></div><div><span><strong>名称９�/strong>土壤水势测量� <strong>型号９�/strong>EQ15 <strong>产地９�/strong>德国</span></div><div><div><p><span><strong>用途：</strong><strong>EQ15土壤水势测量�?/strong>是一种全新的土壤水势测量仪器。水势是在等温条件下，从土壤中提取单位水所需要的能量，单位是� (1 bar=100kPa)。在土壤中，水势是决定水流方向和速度的主要因素，它是判断土壤水分对植物有效性的标志。不同土壤的水势可以直接相互比较。准确测定水势，在研究土壤水分的流动，植物的抗旱生理，自动控制节水灌溉，土壤湿度监测等方面有十分重要的意义、�/span></p><p></p><p><span><strong>原理９�/strong>EQ15平衡式土壤水势传感器由两部分组成：平衡传感器和含水量测量器。平衡传感器由一种特殊材料组成，这种材料具有两个特点：很稳定的含水量和水势之间的关系，高度透水性� 良好的透水性保证其水势和被测量的土壤同步变化。含水量测量器随时测量平衡传感器中的含水量，因含水量和水势之间的关系已知，测得含水量即测得土壤水势。含水量测量器被固定在平衡传感器内，探头周围的环境量稳定不变，从而避免了测量含水量时常见的土壤密度，石头，根系的影响，保证水势测量的精确度、�/span></p><p><span>与传统土壤水势测量仪的比较：目前市场上可见的测量水势的仪器和方法从精度，测量范围，稳定性方面都有不同缺陷，不能完全满足实地使用的要求。传统张力计测量范围�?0~-0.8bar)� 只可以在湿润土壤中使用，而且易损坏；干湿球湿度计受温度变化影响大，精度低，不宜户外使用；石膏块精度低，稳定性低，受土壤pH值影响大、�/span></p><p><span><strong>平衡式土壤水势张力仪具有不可替代的优点：</strong></p><p>��测量范围大，包括了植物可生存的全部范围；</p><p>��精度高，误差小于5kPa：�/p><p>��使用简单，无需任何保养和维修措施，完全适于户外长期使用：�/p><p>��测量精度不受土壤理化性质的影� (碱性土壤除�?：�/p><p>��可用数采进行多探头连接、�/span></p><p><span><strong>技术规格：</strong></span></p><table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><tbody><tr><td colspan="2"><p><span><strong>平衡式土壤水势传感器</strong></span></p></td></tr><tr><td><p><span>测量范围</span></p></td><td><p><span>0~-1500 kPa�?~-15 bar（�/span></p></td></tr><tr><td><p><span>测量精度</span></p></td><td><p><span>��10 kPa�?~-100 kPa），读数10%�?100~-1500 kPa（�/span></p></td></tr><tr><td><p><span>适用温度</span></p></td><td><p><span>工作温度0~40℃，存放温度-30 ~ +70℃，可留置于冻土�?/span></p></td></tr><tr><td><p><span>适用土壤</span></p></td><td><p><span>非盐性土壤（土壤溶液的电导率<1 mS/cm（�/span></p></td></tr><tr><td><p><span>电源</span></p></td><td><p><span>5~15VDC，每次测量消�?3mA��5科�/span></p></td></tr><tr><td><p><span>输出</span></p></td><td><p><span>模拟式输�?00~800mV</span></p></td></tr><tr><td><p><span>尺寸</span></p></td><td><p><span>17��4��2厘米，其中须插入土壤的为前端�?.5厘米</span></p></td></tr><tr><td><p><span>重量</span></p></td><td><p><span>350克（不含电缆（�/span></p></td></tr><tr><td colspan="2"><p><span><strong>手持读数�?/strong></span></p></td></tr><tr><td><p><span>显示</span></p></td><td><p><span>液晶显示屏上直接显示当前水势倻�/span></p></td></tr><tr><td><p><span>键盘</span></p></td><td><p><span>7个按�?/span></p></td></tr><tr><td><p><span>电源</span></p></td><td><p><span>3节AA碱性电池供甴�/span></p></td></tr><tr><td><p><span>工作温度</span></p></td><td><p><span>-20~+70ℂ�/span></p></td></tr><tr><td><p><span>尺寸</span></p></td><td><p><span>127��83��42毫米</span></p></td></tr><tr><td><p><span>外壳材质</span></p></td><td><p><span>ABS工程塑料</span></p></td></tr></tbody></table><p><span><strong>产地：德囼�/strong></span></p></div></div><p><span>Email: </p><p> Shanghai@Dianjiangtech.com(</span><span>上海<span>) </p><p> Beijing@Dianjiangtech.com(</span>北京<span>)</p><p> Kunming@Dianjiangtech.com(</span>昆明<span>)</p><p> Hefei@Dianjiangtech.com(</span>合肥<span>) </span></p><p><span>扫描点将科技官方微信，获取更多服务：</span></p><p><span></span></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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