Guizhou Geological Survey's Dewatering Test Solution

Application Overview
Groundwater level and temperature measurement is particularly important for the mining industry, groundwater exploration, and hot spring water temperature and level monitoring industries. China is rich in groundwater resources, and in many areas, groundwater is the main source of water for human production and life. This requires strengthening the monitoring of deep wells to guide the rational use of water by humans. Real-time monitoring of changes in the dynamic water level of deep wells is also beneficial for earthquake monitoring, providing big data support for geological and seismological industry monitoring. The WH311 deep well water level measuring instrument is an ultra-low power consumption, IP68 high protection level, wired communication, and multi-sensor acquisition monitoring device. Suitable for harsh monitoring environments, it can realize data acquisition, storage, alarm, and transmission of underground wells, fire safety, dam health, water supply and drainage networks, etc., especially suitable for underground well applications.

System Overview
The WH311 groundwater level measuring instrument relies on a deep well water level sensor probe, has the advantages of fast construction speed and real-time long-distance transmission, integrates front-end detection and back-end real-time display, realizes groundwater level monitoring, can monitor groundwater level and temperature data, and the supporting paperless recorder can record data in real time, generate various reports and curves, providing data analysis and decision-making basis for customers. This system is an important means of understanding the changes in groundwater, understanding the groundwater extraction situation, and guiding the protection of groundwater resources.

Application Challenges:
  1. Complex environmental conditions: Equipment often faces complex environments such as high temperature and high pressure, requiring instruments to have excellent anti-interference ability and durability.
  2. Continuous operation: The system needs to run continuously, so the monitoring system must have high reliability and stability to ensure long-term continuous monitoring.
  3. Data integration and real-time performance: It is necessary to integrate and analyze various monitoring data in real-time to enable rapid response and adjustment, ensuring the safe and efficient operation of the system.
  4. High-precision and high-stability products are required.
  5. Maintenance difficulty: The equipment is difficult to maintain, and monitoring instruments need to be easy to maintain and repair to reduce downtime.

Solution Advantages:
  1. High anti-interference ability: Our instrument design has strong anti-electromagnetic interference ability, which can work stably around the equipment, ensuring the accuracy and reliability of the data.
  2. Durability and stability: Using high-quality materials and advanced manufacturing processes, the instrument can operate stably for a long time in high-temperature and high-pressure environments, reducing failure rates and maintenance costs.
  3. Real-time data processing: Equipped with a high-performance data processing unit, it can collect, process, and display monitoring data in real time, supporting quick decision-making and response.
  4. Supports intelligent system integration: Our solution integrates advanced sensors and intelligent control systems to achieve comprehensive monitoring and control of multiple parameters, optimizing production and transmission processes.
  5. IP68 protection level, polyurethane steel wire cable tensile force to cope with deep-water pressure environments.
  6. Convenient maintenance design: The instrument is designed for easy installation and maintenance, reducing maintenance time and costs and improving the overall operating efficiency of the system.
7Provides an intelligent solution for recording liquid level signals.

I. Specific Requirements

Unit: Guizhou Provincial Geological Bureau 111 Geological Team

Operating environment: Yudongxia geothermal water extraction test, deep well depth 1000 meters, water temperature within 90℃.
Monitoring requirements: Real-time display of deep well water level during the water extraction test to provide a basis for calculating geothermal resource exploitation; automated monitoring, improving office efficiency, and reducing manpower input;
      Ensure data accuracy, timeliness, and effectiveness;
      Ensure long-term operation under 1000 meters of water and below 90℃.

II. Measurement and Analysis

Due to the special nature of the measurement of deep well water level monitoring, non-contact methods such as radar level meters and ultrasonic level meters cannot effectively transmit signals, while magnetic float and bubble type measurements have depth limitations.
Now, the WH311 deep well probe uses a laser static pressure principle (laser calibration of zero point full scale), which greatly simplifies the measurement process and reduces the cost of on-site data acquisition. The WH311 is easy to install, and only needs to fix the level probe 3-5 meters above the deep well pump when the pump is lowered into the well. Suitable for deep well water level measurement and monitoring, solving the problem of difficult deep well water level measurement, with the following points to meet user needs:

1	Component Structure	Built-in monitoring components: Water level monitoring and water temperature monitoring are completed by one probe.
2	Accuracy	Measurement sensitivity and range: It can accurately measure the subtle fluctuations of groundwater level and temperature, and can also monitor a larger range of water level and temperature fluctuations.
3	Waterproof Performance	The WH311 probe is designed with a fully welded integrated structure to ensure normal operation under 1000 meters of water, and each unit will pass a 20MPa waterproof test (equivalent to 2000 meters of underwater waterproof);
4	Steel Wire Cable	Signal transmission uses a high-strength polyurethane steel wire cable (during the laying process, be sure to pay attention to the protection of the cable) to ensure that the temperature and liquid level measurement signals are real-time, high-precision and stable output;
5	Protect the Deep Well Pump	Real-time display of deep well water level and temperature, and with high and low liquid level alarm function, it can be linked with the deep well pump to realize the low-level stop pump function, preventing the deep well pump from burning out.
6	Power Supply Selection	Two power supply requirements can be achieved: AC 220V power supply; DC 24V outdoor portable battery;

*Water extraction test monitoring equipment and transmission system requirements
Install one set of automatic groundwater monitoring equipment that can measure and record elements such as water level and water temperature, and can automatically record data; the automatic recorder housing is made of stainless steel, with a simple structure and small size; the monitoring frequency is optional (1S-4 minutes), and the data storage capacity is not less than 200,000 entries; data can be exported directly as a table.

III. Scheme Design Diagram and Installation Instructions

IV. Wiring Instructions

1. The liquid level and temperature probe WH6 displays the real-time liquid level on the top and the real-time temperature on the bottom.

2. It has a recording function to record the data, and the data can be exported and generated as a table using a random U disk.

V. Guizhou Geological Bureau 111 Geological Team successfully signed a contract using Wanhe Instrument's solution

VI. On-site Construction Drawings

VII. Product Photos

VIII. Product Certification (For detailed certification information, please visit: www.whsensors.com)

1. Inspection and Certification Group Inspection Report
2. CE FCC Certification
3. RoHS Certification
4. Calibration Certificate from Intertek SGS Third-Party
5. Shenzhen Metrology Institute 0.25-level Inspection Certificate

IX. Product List