.PQWT S300 and S500 are Chinese devices recently designed for groundwater exploration. The operation of these devices is based on the measurement of normal changes in ground voltage (mV) and their output is usually displayed as red and blue curves, which show the electrical changes in the ground. Of course, in the output, specific unit is not displayed.
One of the features of this device is lightness and portability, no need for complex equipment, speed and ease of use even for non-specialists. The obtained data only represent the relative changes of the electric field and not the actual layers of the earth or the amount of water. The fact that there is no need for an expert to work with the device can question its validity.
Device limitations:
- No consideration of actual geology, soil and rock type, or thickness of layers
- Low accuracy and dependent on user interpretation
- Suitable only for rough screening of potential water areas and not accurate drilling decisions
Geological units have a wide range of electrical values and these values depend on several factors; Including:
- Dimensions and material of soil and rock particles
- Rock type and water saturation
- Location close to power lines or masts
- How to collect and read data
These factors can strongly influence exploratory decisions. The S300 and S500 appeal to some semi-experts and those looking for quick results simply by offering an attractive, easy-to-pick-up color model. But this appeal is different from scientific validity and real accuracy.
On the other hand, water exploration experts who have scientific training and field experience, such as senior experts and PhD in geophysics, by understanding the geology of the area and using professional electrical and geophysical devices, can perform accurate analysis of layers, soil type and water content of the earth.
Standard geophysical methods, such as electrical and TM devices with Wener and Schlumberger arrays, are performed by trained professionals and are based on clear and provable scientific principles:
- Measuring the electrical resistance of soil and rock at different depths
- Detailed analysis of ground layering, soil and rock type, and water content
- Providing reliable output for engineering and drilling decisions
Advantages:
- High accuracy and reliability
- Scientific and repeatable documents
- Detailed analysis of geology and subsurface conditions
Limitations:
- Heavier and time-consuming equipment
- Need specialized knowledge and professional experience
🔹 Important note: in case of implementation and analysis of the obtained information by non-expert, expert and scientific people, it cannot be expected that accurate and reliable results will be obtained.
With the use of professional experts and a high level of science, the use of proper equipment for land measurement and a long history in this field, the Flat Kare company has been able to stabilize its position and gain customer satisfaction.