Drying method is the most classic measurement method, the operation is simple and intuitive, but the measurement does not have continuity. And sampling will interfere with the continuity of soil moisture in the field. The sampling holes left in the field will cut off some roots of the crop and affect the movement of soil moisture;
The neutron method can be periodically repeated at different depths in situ without destroying the soil, but the vertical resolution of the instrument is poor, surface measurement is difficult, and radiation hazards are healthy.
The gamma ray method and the neutron meter method have many advantages, and they have higher vertical resolution than the neutron meter, but the gamma ray also harms human health.
The sensor method is used to measure soil moisture. Its accuracy is affected by the design of the sensor, process manufacturing, etc. It is still in the further development stage.
The frequency domain reflectometry method and the time domain reflectometry method are the most commonly used. They all have the advantages of mature technology, high precision, and portability. Compared with TDR, FDR has more unique advantages in terms of moisture measurement methods because it has more stability, is less affected by salt, is more energy-efficient, has less limited cable length, can be continuously measured in situ, and has no radiation.
Using a multifunctional soil moisture recorder to measure, it can quickly measure the moisture content in the soil, but its measurement accuracy is affected to a certain extent by the nature of the soil and the salt content of the soil, even if the soil is used as such. Water thermometers to measure This method is a more versatile method of operation.
Fiberglass Duct Rodder
Fiberglass duct rodder or push rodder and commonly called python rod by its nature passing through under ground ducts by ups,down negotiating the duct curvature thus very convinient to pull the cables,wires inside the duct,also it can be used to locate the duct block or damage portion identifications.Its has high safety aspects to use underground applicartions because of its non conductivity of electricity,sets a major safety to site workers.
It has been built with rigid sturdy steel tubular fabrication for easy usage at site and can be self coiled in the tubular frame and easily roll like trolley on ground by its wheels fitted at bottom.
Specifications of duct rodder:
Specification
Rod Diameter
(mm)
4-16mm
Rod Length
(m)
15-500m
Color
blue,yellow,red,white,etc
Material
Rod Inner
extruded by fiberglass and high strength resin at high temperature
Rod Outer
high density polyethylene coating
Iron Frame
steel with high-temperature sprayed plastic or spray coating
Wheel
rubber
Brake
yes
Drawing Head
copper
Physical Characters
Technology
pultrusion
Work Situation Temperature
-40°C to +80°C
Tensile Modulus
>30000MPA
Package
Inside
plastic woven strip wind around the frame
Outside
carton box and wooden box
Fiberglass Duct Rodder,Fiberglass Duct Rod,Yellow Fiberglass Duct Rodder,Portable Fiberglass Duct Rodder,Duct Rodder
Hebei Long Zhuo Trade Co., Ltd. , https://www.hblongzhuo.com