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类型:水分测定仪 品牌:南通中天精密仪器 型号:MP-306 测量范围:0～100%（m3/m3） 可测样品状态:固态 液态 外形尺寸:32*140（mm）
南通中天精密仪器有限公司是与南京水利科学研究院、江苏省农业科学院共同合作组建的从事精密仪器生产的*化公司。
公司生产的土壤水分测定仪、MP-406B、MP-306系列*土壤水分传感器、*土壤水分数据自动采集器、张力计和土壤溶液取样器等农业节水仪器为我国的农业、蔬菜生长、水利灌溉、节水工程开创了良好的发展前景。
MP-306土壤水分探测器
MP-306是由本公司*新研发的价廉物美、普及型的实用产品。
它是由集成电路和不锈钢结构组件构成。电路封闭在*水室内，测量时不锈钢针*土壤中。探头尾部的连接线输入适合的工作电压和输出探测的信号。
MP-306采用FDR原理。通过*的传输线产生高频信号，测量土壤参数。该传输线的阻*随土壤阻*的变化而变化。阻*包括表观界定常数和离子电导率。选用电信号的频率使离子的传导率的影响*小，以使传输线的阻*变化几乎*依赖于土壤介电常数的变化。这些变化产生一个电压驻波。驻波随探针周围介质的变化增加或减少。
MP-306利用振荡器产生的电压和探针返回电压的差值测量土壤的介电常数。因为*在制造过程中调节MP-306以产生一个与已知介电常数对应的一致的输出电压，所以每个MP-306无需系统标定即可互换使用。
采用世界*技术的土壤湿度传感器，精密，*，耐用。性能*群，价格合理，且无放射性污染。
1、 操作简便，直接连接到手持仪表或数据采集器。
2、 *材料，全密封，可长期埋设在地下任意深度，连续测量。
3、 *性质土壤及其它被测介质，易于标定。
4、 表层土壤湿度，即插即读，配备*延长工具可测量至80厘米深度。而且埋入深度可根据用户的要求自定。
5、 温室大棚，花卉蔬菜，草地牧场，节水农业，自动控制，*佳湿度探测器。
6、 20毫安工作电流，*。
技术参数：
测量参数：土壤容积含水量
测量精度：&plu*n;3%
量程：0～100%（m3/m3）
测量区域：90%的影响在围绕*探针的直径2.0cm、长为6cm的圆柱体内
稳定时间：通电后约10秒
响应时间：0.5秒内对99%的变化有响应
工作电压：9—12VDC,&plu*n;20%
工作电流：常规19mA *大21mA
输出信号：0～1.2V
密封材料：PVC
探针材料：不锈钢
电缆长度：标准长度3m*大长度30m
南通中天精密仪器有限公司
传真：
MP-306 Moisture Probe
MP-306 moisture probe is the latest development of our company which is affordable, cheap and fine .
It is made up of the integrated circuit and stainless steel structure components. The integrated circuit is closed in waterproof indoor, and the stainless steel needle is inserted in the soil when we use it. The probe end connecting input and output voltage for the work of the signal detection.
MP-306 uses FDR theory .It produces high-frequency signal through the special tran*ission line to measure soil parameters. The tran*ission impedance changes with soil impedance which includes superficial define constants and ionic conductivity. Choose the frequency of the signal tran*ission rate to make the ion has a minimal impact on the tran*ission impedance which varies almost only relies on the soil of dielectric constant change. These changes make a voltage standing wave. Standing wave changes with the surrounding media probe to increase or decrease.
MP – 306 measures the dielectric constant of soil by oscillator voltage and the difference of probe return voltage . Because only regulate MP - 306 in the manufacturing process to produce a output voltage which is in accordance with known dielectric constant , so each MP - 306 can exchange with no system calibration .
Product Introduction:
The MP-306 moisture probe adopts the advanced technology of soil moisture sensor, which is also precision, reliable and durable. It has super performance, reasonable price, and no radioactivity pollution.
1、The operation is simple which is directly connected to the handheld instruments or data collector.
2、It is all sealed with environment materials, which can be long-term buried in the underground to consecutive measurements in arbitrary depth.
3、When the special properties of soil and the other use the sensor, it will demarcate easily.
4、It plugs and views the moisture of the surface soil, which equipped with special insert extend tools that can measure to 80 centimeters deep. And embedding depth can be set according to the requirement of the user.
5、It is the * humidity detector for greenhouse, flowers and gr* vegetable shed ranch, water-saving agriculture, and automatic control.
6、The working current of it is 20 ma which is the world leader.
Technical Parameters:
Parameters: volumetric soil water content (VSW%)
Accuracy:&plu*n;3%
Range:0~100%(m³/m³)
Region:90% effect in the cylinder around the central probe with a diameter of 2.0cm and a length of 6cm
Stable Time: About 10 seconds after the electricity
Response Time: Response to 99% changes within 0.5 second
Working Voltage:9-12VDC，&plu*n;20%
Working Current: Standard: 19mA, Maximum: 20mA
Output Signal: 0~1V
Sealing Materials: PVC
Probe materials：Stainless Steel
Cable length: Standard: 3m,Maximum: 30m
Nantong Zhongtian Accurate Instrument Co., LTD
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友情链接： 深圳市元东发电子有限公司
