\r土壤水分温度测试仪<\/span>QS-WT<\/span>能**检测土壤水分和土壤温度，测量迅速，结果直读，可以<\/span>对各种类型的土壤进行野外流动测试，能够满足农业、林业、环境保护、水利、气象等部门对<\/span>土壤监测、节水灌溉、温室控制**农业的<\/span>工作需求。<\/span><\/span>
\r<\/span><\/strong>
\r二、检测原理：<\/span><\/span><\/strong>
\r水分测量采用标准的频域反射原理，<\/span>仪器发射特定频率的电磁波，电磁波沿<\/span>传感器<\/span>探针传输到达土壤底部后返回，检测探头输出的电压，由输出电压和水分的曲线模型关系自动计算出土壤的含水量数值；温度测量采用接触式硅半导体传感方式；<\/span><\/span><\/strong>
\r<\/span><\/strong>
\r三、功能特点：<\/span><\/span><\/strong>
\r*<\/span>直接测量<\/span>土壤含水量和温度<\/span>并显示数值，快速准确<\/span><\/span>
\r*<\/span>测量范围宽区域设计，<\/span>可以检测<\/span>土壤、粮食、烟丝、蒸气及各种液体<\/span>的温度<\/span><\/span>
\r*<\/span>便携式设计，手持即可操作<\/span><\/span>
\r*LCD<\/span>液晶数字显示器，显示<\/span>清晰、直观<\/span><\/span>
\r*<\/span>内置高容量可充电电池，配备快速充电器<\/span><\/span>
\r*<\/span>测试速度快，<\/span>0.<\/strong>5<\/span>秒钟即可测试出结果。<\/span> <\/span>
\r*<\/span>可根据用户需要设定自动关机时间，出厂设置<\/span>3<\/span>分钟待机自动关机功能<\/span> <\/span>
\r*<\/span>节电的<\/span>5<\/span>秒钟探头预热测量模式；<\/span><\/span>
\r*<\/span>专用手提式机箱，方便野外检测 <\/span><\/span>
\r*<\/span>温度传感器采用硅半导体，测量迅速，准确度高，稳定性高，<\/span>300uA<\/span>超低电流设计、超低耗电，比同类节电上千倍<\/span><\/span>
\r*<\/span>传感器信号输出采用标准的电流环传送技术，抗干扰能力强，传送距离远<\/span><\/span>
\r*<\/span>水分传感器材料为聚四氟乙烯，密封防水耐酸碱抗腐蚀，可以长期埋入土中免维护<\/span><\/span>
\r*<\/span>水分传感器经过严格标定，受土质影响小，各种土质、地区都能使用<\/span><\/span>
\r<\/span><\/strong>
\r四、水分测量技术指标：<\/span><\/strong> <\/span><\/span>
\r◆<\/span>测试类型：体积含水量<\/span><\/span>
\r◆<\/span>测试范围：0<\/span>～**<\/span><\/span>（<\/span>m^{3<\/span><\/sup>/ m3<\/span><\/sup><\/span>）<\/span><\/span>
\r◆<\/span>反应时间：<\/span><0.<\/strong>5<\/span>秒<\/span><\/span>
\r◆<\/span>探头长度：不锈钢部分6.5cm<\/span><\/span>
\r◆<\/span>电缆长度：<\/span>1.7<\/span>米**可延长到<\/span>50<\/span>米）；<\/span><\/span>
\r◆<\/span>测试的**误差：≤2% <\/span><\/span><\/span>
\r◆<\/span>相对百分误差：≤3% <\/span><\/span>
\r◆<\/span>水分测量原理：传感器频域反射<\/span><\/span>
\r◆<\/span>探头输出电压：0-2.5<\/span>伏<\/span><\/span>
\r◆<\/span>工作电压：12<\/span>或24VDC<\/span><\/span>
\r◆<\/span>按键方式：薄膜轻触式<\/span><\/span>
\r◆<\/span>显示方式：<\/span>LCD<\/span>液晶、数字直读<\/span><\/span>
\r◆<\/span>工作环境：温度：<\/span>-30<\/span>～<\/span>70<\/span>℃<\/span>  <\/span><\/span>湿度：<\/span>≤<\/span>90%RH<\/span>
\r<\/span><\/strong>
\r五、温度测量技术指标：<\/span><\/strong><\/span><\/strong>
\r◆<\/span>测温范围：<\/span>-50<\/span>℃～<\/span>65<\/span>℃<\/span><\/span>
\r◆<\/span>准确度：<\/span>±0.3<\/span><\/span>℃<\/span>满度±0.1<\/span><\/span>℃<\/span>  <\/span><\/span>
\r◆<\/span>灵敏度：±0.1<\/span><\/span>℃<\/span><\/span>
\r◆<\/span>传感器：<\/span>硅半导体<\/span><\/span>
\r◆<\/span>显示方式：<\/span>LCD<\/span>液晶<\/span><\/span>
\r◆<\/span>按键方式：薄膜轻触式<\/span><\/span>
\r◆<\/span>温度测量原理：接触式硅半导体传感<\/span><\/span>
\r◆<\/span>工作电源：<\/span>1.5V<\/span>、<\/span>300uA<\/span>
\r◆3<\/span>分钟自动关机<\/span><\/span>
\r◆<\/span>探头长度：25cm<\/span><\/span>
\r◆<\/span>电缆总长：168 cm<\/span><\/span><\/span>
\r<\/span><\/strong>
\r六、仪器配置：<\/span><\/span><\/strong>
\r数据采集主机<\/span>QS-WT<\/span>、水分传感器<\/span>QS<\/span>、温度传感器<\/span>QS<\/span>、充电器、手提箱、说明书、合格证、保修卡、<\/span>手提箱<\/span><\/span>
\r \r<\/p><\/div>}