Self recording water level gaugeThe main types include float type, ultrasonic type, bubble type, pressure resistance type, and contact type. Among them, the float type water level gauge has high accuracy, simple structure, and reliability, and is the most commonly used type both domestically and internationally; Ultrasonic water level gauges and radar water level gauges use the propagation characteristics of sound waves or electromagnetic waves for measurement, and are suitable for various complex environments.

　　Self recording water level gaugeDuring use, various malfunctions may occur. Here are some common malfunctions and their solutions:

1、 Record anomalies

Record line interruptions or jumping fluctuations

Reason: It may be caused by mechanical jamming, recording paper movement failure, etc.

Solution: Check if the mechanical components are stuck, clean or replace the faulty components; Check the movement of the recording paper to ensure that it can move smoothly.

The recorded curve shape does not conform to hydrological laws

Reason: It may be caused by instrument malfunction or environmental factors.

Solution: Check if the instrument is functioning properly and eliminate any malfunctions; Assess the impact of environmental factors (such as drastic temperature changes and mechanical vibrations) on the records and take corresponding measures for correction.

2、 Instrument malfunction

Float inlet water

Reason: The float seal is not tight or damaged by external forces.

Solution: Check the sealing condition of the float and replace the damaged float; Correct the buoyancy changes caused by water ingress to ensure measurement accuracy.

Recording pen turned over

Reason: Improper adjustment of the recording pen or mechanical component failure.

Solution: Adjust the adjustment mechanism of the recording pen to ensure that it moves within the normal range; Check if the mechanical components are faulty and replace the faulty parts.

Mechanical component damage

Reason: Long term use or external impact can cause damage to mechanical components.

Solution: Regularly check the wear of mechanical components and replace damaged parts in a timely manner; Avoid external impact on the instrument to ensure its normal operation.

3、 Time error

The self recording clock is not allowed to move

Reason: Internal mechanical structure failure or insufficient battery power of the self recording clock.

Solution: Check the internal mechanical structure of the self recording clock, repair or replace faulty components; Replace the battery to ensure the normal operation of the clock.

Timeline deviation

Reason: Due to time errors, the recorded curve deviates from the timeline.

Solution: Correct the recorded curve at the correct time to ensure the accuracy of the recorded data.

4、 Environmental interference

Severe temperature fluctuations

Reason: Severe temperature changes can cause deformation or unstable performance of instrument components.

Solution: Perform temperature compensation on the instrument to ensure measurement accuracy at different temperatures; Install the instrument in an environment with minimal temperature changes.

Mechanical vibration

Reason: External vibration causes recording distortion or instrument damage.

Solution: Install the instrument in a location away from the vibration source; Perform shock-absorbing treatment on the instrument, such as installing shock-absorbing pads.

5、 Compare and revise requirements

Exceeding the limit of the difference from manual observation values

Reason: There are system errors or manual observation errors in the instrument.

Solution: When the difference between the self recorded water level and manual observation exceeds the specified allowable error (such as ± 2cm), the instrument needs to be calibrated or adjusted; Simultaneously improve the accuracy of manual observation.

Data correction processing

Applicable scenarios: When recording anomalies, instrument malfunctions, time errors, environmental interference, and other situations result in recording distortion.

Operational requirements: The degree of impact should be evaluated based on the actual situation, and the records should be corrected by modifying formulas or referring to other reliable data.