Information

As an important liquid level measurement equipment, the ultrasonic liquid level meter's probe is a key component to achieve high-precision measurement. This article will introduce in detail the types, working principles, selection considerations, and possible problems and solutions of ultrasonic liquid level meter probes during use.

1. Types of probes

a. Single crystal probe: Made of a single chip material, it has high sensitivity and stability.

b. Dual element probe: composed of two elements, used to suppress multipath effects and improve measurement accuracy.

c. Helical beam probe: It has a spiral beam shape and is suitable for measuring complex liquid surfaces.

d. Multi-band probe: supports multi-band operation and adapts to different liquids and measurement environments.

2. Working principle

a. Emitting ultrasonic waves: The probe emits ultrasonic signals, which propagate along the liquid surface.

b. Receive reflected signals: The probe receives the ultrasonic signals reflected back from the liquid surface.

c. Measure time difference: Use the time difference between sending and receiving to calculate the liquid level.

d. Multipath effect suppression: Use technologies such as dual crystals or spiral beams to suppress multipath effects and improve accuracy.

3. Selection precautions

a. Liquid properties: Select the appropriate probe according to the temperature, viscosity and other properties of the liquid.

b. Measuring range: Select the measuring range of the probe according to actual needs to avoid exceeding the working range.

c. Working environment: Consider the temperature, humidity and other factors of the working environment to select the appropriate probe type.

d. Installation position: The installation position of the probe has an impact on the measurement accuracy. Choose the appropriate installation position.

4. Possible related problems

a. The probe cannot work properly or the signal is unstable: - Possible reasons: The probe is damaged or improperly installed. -Solution: Check the status of the probe, reinstall it and make sure it is perpendicular to the liquid surface.

b. Large deviation in measurement results: - Possible reasons: multipath effect, liquid surface fluctuation, etc. -Solution: Use a probe that suppresses multipath effects to stabilize the liquid surface.

c. The probe is subject to external interference, resulting in false measurements: - Possible reasons: electromagnetic interference from nearby equipment. -Solution: Remove or isolate the interference source, and choose a probe with better anti-interference performance.

d. Performance degradation caused by probe aging: - Possible reasons: Probe aging due to long-term use. -Solution: Replace the probe regularly and pay attention to equipment maintenance.

5. Methods to solve the problem

a. Regular maintenance: Clean and inspect the probe regularly to ensure normal working condition.

b. Select an anti-interference probe: Choose a probe with strong anti-interference ability according to the working environment.

c. Avoid installing in areas with liquid level fluctuations: Avoid installing the probe in areas with large liquid fluctuations, which will affect the measurement accuracy.

Summary

The ultrasonic liquid level meter probe is the core component of liquid level measurement. Choosing the appropriate probe is crucial to ensure measurement accuracy. During selection and use, users need to consider factors such as liquid properties, working environment, and possible problems. Through reasonable selection and regular maintenance, the ultrasonic liquid level meter probe will provide stable and accurate data for liquid level measurement.