Hydrogeological teaching equipmentCovering seepage meters, groundwater level simulation devices, water quality monitoring sensors, etc., their accuracy and integrity directly affect the effectiveness of teaching experiments. Scientifically formulating calibration cycles and standardizing storage conditions are the core measures to ensure the long-term stable operation of equipment. The specific management plan is as follows:

1、 Grading calibration cycle: precisely set according to equipment type

The calibration cycle should be combined with the equipment accuracy requirements, frequency of use, and component characteristics, and controlled by "classification and grading", taking into account both teaching practicality and calibration economy.

1. High precision sensing equipment

The core components of sensing equipment such as groundwater level gauges, conductivity meters, and osmometers are prone to drift due to environmental influences, and the calibration cycle should be set to once every 6 months. Calibration needs to rely on standard measuring devices, such as calibrating the range of the osmometer with a precision pressure source and calibrating the water quality sensor with a standard solution, to ensure that the measurement error is controlled within the allowable range of ± 2% in teaching; If the equipment is frequently used for training (more than 20 times a month), it can be shortened to calibrate once every 4 months to prevent accuracy degradation from affecting experimental data.

2. Mechanical simulation equipment

Mechanical equipment such as seepage testing instruments and aquifer simulation devices should be calibrated with a focus on structural sealing and transmission accuracy, and the calibration cycle can be set to once a year. The main calibration contents include pipeline airtightness (leak detection through pressure holding test), valve opening accuracy, and model boundary sealing. If there are problems such as abnormal seepage velocity and water level simulation deviation during the experiment, temporary calibration should be carried out immediately to avoid teaching experiment failure.

3. Auxiliary tool equipment

The calibration cycle for basic tools such as measuring cups, rulers, and pressure gauges can be extended to once every 12-18 months. In daily teaching, simple verification can be carried out through comparison methods, such as using standard measuring cylinders to calibrate experimental measuring cups, to ensure the accuracy of basic measuring tools.

2、 Standardized storage conditions: according toHydrogeological teaching equipmentCharacteristic classification control

The materials and structures of different devices have significant differences in storage environment requirements, and targeted storage plans need to be developed to reduce environmental losses.

1. Temperature, humidity, and cleanliness control

The overall storage environment should maintain a temperature of 15 ℃ -25 ℃ and a relative humidity of 40% -60% to avoid metal parts rusting and electronic component short circuits caused by high temperature and humidity. Sensing devices need to be stored separately in a drying oven with built-in desiccants and regularly replaced; Large equipment such as aquifer simulation devices need to be emptied of residual water in the pipeline, cleaned of metal contact surfaces, and coated with rust proof oil before storage to prevent pipeline blockage and component corrosion.

2. Special protection for structure and accessories

Precision sensing probes need to be covered with protective sleeves to avoid damaging sensitive components due to collisions; Pipeline accessories should be classified and labeled with specifications, and the interfaces should be sealed with sealing caps to prevent dust from entering and causing blockages; The electronic control module should be kept away from strong electromagnetic sources, and the power should be disconnected when stored. It should be regularly powered on for self inspection (once every quarter) to prevent the circuit board from becoming damp and malfunctioning.

3. Customized protection for special equipment

The equipment used for radioactive tracing experiments should be stored in a dedicated shielding cabinet and protected against radiation; The monitoring equipment for corrosive reagents should be cleaned before storage to prevent residual corrosion of the equipment. At the same time, it should be stored separately from the reagents to eliminate safety hazards.

3、 Full process management guarantee

establishHydrogeological teaching equipmentCalibration and storage ledger, recording each calibration time, results, and changes in storage environment, to achieve traceability management; Regularly conduct equipment status inspections (once a month) to promptly identify issues such as calibration expiration dates and abnormal storage environments; In response to the particularity of teaching equipment, customized calibration plans can be developed in collaboration with equipment manufacturers, taking into account the requirements of teaching scenarios and equipment accuracy standards, to ensure that the equipment is always in good teaching usable condition.