Well gauge: types and specifications

The principle of drilling aquifers is to deepen into the earth at a certain distance in search of fluid. In this case, quite often there is a need for accurate determination of the depth to the level with water.

For these cases, the well gauge was invented, which allows to cope with this task.

Types of instruments for these jobs

First, it should be noted that there are many ways to determine the depth of the well to the water level. They are quite simple and do not require special equipment, although there are those who even need a computer..

Therefore, to determine the method of measurement should be in accordance with the needs of a particular design and its technological features.

Simplest way

• Quite often, simple types of wells made according to the principle of Abyssinian wells are installed at dachas or on land plots. At the same time, water from such structures does not always flow by gravity, which makes it necessary to control how it appears in the pipe.
• It is worth noting that such wells are low cost and are often made with the desire to save. Given this, the owner of this design does not always find additional funds for the purchase of a level gauge, the price of which is usually greatly overestimated from consideration of the specifics of use.

• In such cases, the wizard cope with this task with the help of ordinary rope, to which the load is tied.
• It is lowered into the tube, plunging to the very needle.
• Then the rope is lifted back and checked for the presence of a wet track. Where it begins, and the upper edge of the aquifer will be located.
• After that, the rope is measured and receive the necessary data.

• It is worth noting that such a system has a lot of flaws and cannot be called perfect or accurate. However, it can determine the approximate depth to the level of occurrence of water.

Tip! If hired workers or employees of a company with which an agreement was signed to drill a well, use this method, then the payment terms should immediately be reconsidered, since this indicates a low level of professionalism. At the same time one should not think that having a good level gauge speaks of high skill.

Winch device

• These units are quite simple and reliable. They do not require special skills for their use and can be used by workers immediately after reading the instructions.
• The principle of their operation lies in the fact that a special cord is used as a winch, on which a marking strip is installed with an indication of the footage.
• Also attached to it are wires connected to the sensor at the end. It is worth noting that the control device itself looks like two bare contacts located at a certain distance from each other.

• On the winch coil itself, a power source is attached, for which you can use an ordinary battery such as Krone.
• It connects in one circuit with the sensor and the light generating source of noise signals. In their role can be light bulbs and a buzzer.
• It should be noted that such a system can be assembled by hand. To do this, it is enough to have knowledge of physics at the grade 8 level.
• The principle of operation of this device is based on the fact that when the sensor is lowered onto the cable into the well, it will be submerged in a certain area. As a result, his contacts will close and a signal will be heard above. In this case, the user should pay attention to the marker tape with marks, which will indicate the depth to the aquifer.

• The main advantage of such a system is its simplicity.
• It is also worth noting that the contacts of the sensor are located at such a level so as not to react to the increased humidity, and only work in direct contact with the liquid.
• A similar gauge for wells is often used for domestic purposes. However, some companies that provide drilling services actively use it as a primary or additional control.

• The simplicity of the device eliminates the occurrence of errors in the readings, and it almost completely eliminates the factor of incompetence of the staff.

Tip! If you can make such a device yourself, then you should use it. Factory products are expensive and do not always meet the requirements of some craftsmen.

Ultrasonic devices

• These devices can be called one of the most expensive. The fact is that for their use you may need a computer or its analog is supplied in the kit.
• It is worth noting that to determine the level of occurrence of the aquifer, using gauges for wells of this type, the action can only be a specialist who has undergone appropriate training.
• Most of these systems have a number of additional functions. The most important of which is the possibility of detecting damage in a column or pipe, and determine the specific depth of this defect.

• Given such capabilities, such systems are actively used in the re-entry of wells.
• They also found extensive use in drilling at the level of the artesian layer, since they can exercise control at great depth.
• One of the advantages that such downhole gauges have is that it is not necessary to make a deep dive for them to work. It is enough to install the sensor at the beginning of the well, and the rest of the work will be done by ultrasonic radiation. The wave will be reflected from the water and fall on the indicator, which will transfer the received data to the calculation module.

• There will be a detailed analysis of the speed of the waves and the time for their reflection, as a result of which the conclusion will be formed.
• Special attention should be paid to the fact that devices of this type of action allow remote monitoring. To do this, they establish compliance with communication modules, which enable them to maintain contact between the computational module and the sensor at a distance.
• Considering all the features of such devices, they are used mainly in deep well drilling or on an industrial scale.

• It should also be noted that there are simplified versions of these units that can only determine the distance to the liquid. A typical instruction manual for their operation states that they have standard settings and are able to work under certain conditions. This makes it very difficult to use such gauges, forcing craftsmen to use simple-type constructions.
• It should be said that all data on the water level in the well are recorded in its certificate. Therefore, in subsequent measurements, if it changes, then the documentation must be amended. Considering this, it is worthwhile to attract certified specialists for such operations, the conclusion of which will be the basis for the adjustment.

Tip! It is worthwhile to acquire such a unit only in cases when there is a need for constant monitoring of the well. Otherwise, it will lead to large and unnecessary costs.

Conclusion

After reviewing the video in this article, you can examine in detail the level gauges of various kinds and become familiar with their use. At the same time, based on the text presented above, one should come to the conclusion that neither the simplest nor the most complex control systems can combine the two main qualities. Accessibility and practicality in this combines only the winch type of construction.