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Different methods of wiring measurement for PQWT Water detector

June 20,2024

Currently, many well-drillers use Water detector to locate water sources. Some individuals only measure a few points, with distances ranging from 1 to 5 meters, and only one profile is measured. This approach often leads to results that are sometimes accurate and sometimes not, and even when the instrument shows no issues, water sources may still not be found.

Why does this happen? Upon careful analysis, the main reasons are related to the wiring method during measurement, insufficient data points, and lack of understanding of local hydrogeological conditions. Below, I will share several efficient wiring methods for water-finding devices to help everyone more accurately locate water sources.

Straight Line Profile

Applicable scope: Suitable for most areas, it is the most commonly used wiring measurement method, suitable for detecting various types of groundwater and other targets.

Wiring method: According to terrain changes, arrange a straight line profile vertically or obliquely to detect the direction of groundwater or target objects. Set as many measurement points as possible, with the distance between points generally not less than twice the width of the target object. In most areas, it is recommended to measure a profile length of 10 to 30 points, with a point distance of 2 to 5 meters.

Features: Simple operation, can quickly determine the location and depth of the target object.

Key points: The arranged straight line should be as straight as possible, markings can be made with a ruler and spray paint. The number of measurement points should not be too few, it is recommended to be at least five times the width of the target (anomaly body).

Multi-profile - Planar Profile

Applicable scope: Suitable for situations where high precision in water finding is required and there is less information about the area.

Wiring method: Arrange multiple parallel and equidistant straight line profiles, usually requiring 3 or more, ensuring accurate point and line spacing to determine the direction and depth of anomalies. Each measurement line should have at least 14 measurement points, with a point distance of at least two meters.

Features: Compared with a single straight line profile, multi-profile wiring can more quickly determine the direction of anomalies and improve success rates.


Crossed Profile

Applicable scope: Suitable for areas with limited space or unclear exploration target directions.

Wiring method: First complete a straight line profile measurement, then rotate 45 to 90 degrees to measure a second straight line profile. Analyze the direction of anomalies through two profiles to improve the accuracy of well drilling locations.

Features: Combining two straight line profiles can confirm the existence of target objects multiple times, assisting in judging their approximate direction.

Circular Profile

Applicable area: Used for areas near point disturbance sources such as transformers and signal towers.

Wiring method: Center around the disturbance source for circular or semicircular arrangement of profile measurements, with the size of the circle set according to the size of the disturbance source.

Features: Effectively reduces interference, quickly locates the direction and position of exploration target objects.

Different wiring methods can obtain different underground information, with varying accuracy rates. The basic principle is to increase the number of measurement points and profiles as much as possible, follow the principle of "from known to unknown", and improve accuracy through multiple tests and comparative analysis. Additionally, a deep understanding of the local hydrogeological environment is extremely important, which requires accumulating usage experience and continuous learning. Please continue to follow our subsequent shares, and you can also review our previous articles.

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