Particle strength tester is a device used to measure the strength and hardness of granular materials, widely used in fields such as medicine, food, and chemical engineering. This instrument can accurately measure the strength and hardness of particles, providing data support for scientific research and industrial production.

1、 Working principle

The particle strength tester calculates the strength and hardness of particles by applying external force to cause deformation or fracture of the particle material, recording the changes in force values during this process. Its main working principle involves the following aspects:

1. Pressure sensing technology: The instrument is equipped with high-precision pressure sensors inside to measure the pressure value applied to the particles. The sensor converts the measured analog signal into a digital signal and transmits it to the controller for processing.

2. Deformation measurement technology: In addition to measuring pressure values, some particle strength measuring instruments can also measure the deformation of particles during the process of force. This is usually achieved through strain gauges or laser ranging, providing a basis for calculating parameters such as the elastic modulus of particles.

3. Data processing and analysis: The controller processes and analyzes the received pressure and deformation values to calculate parameters such as particle strength and hardness. At the same time, some instruments can also store and print measurement results, making it convenient for users to conduct subsequent analysis.

二、操作方法

The operation method of the particle strength tester is relatively simple, but some details need to be noted. The following is a typical operational process:

1. Prepare samples

Select representative particle samples to ensure that there are no impurities or particulate matter in the samples.

Place the sample in the fixture and clamp it tightly. The selection of fixtures should be based on the shape and size of the particles.

2. Set test parameters

Select appropriate testing methods based on testing requirements, such as compression, breakage, or shearing.

Set appropriate testing parameters, such as the magnitude of applied force, testing time, etc. The settings of these parameters should be adjusted according to the properties of the granular material and testing requirements.

3. Calibration instrument

Before each test, it is necessary to calibrate the particle strength tester to ensure the accuracy of the measurement results.

Calibration methods typically include zero point calibration and standard substance calibration. Zero point calibration is to adjust the instrument to a no-load state, ensuring that the displayed value is zero. The standard material calibration criterion is to use standard particles with known strength and hardness for calibration, adjust the instrument to make the measurement results consistent with the standard value.

4. Start testing

Press the start button, and the controller will start applying force and record the deformation force of the granular material.

The force sensor records the measurement data and transmits it to the controller for processing.

5. Read results

After the test is completed, the controller will automatically calculate and display parameters such as strength and hardness of the granular material.

Users can read and record these results as needed for subsequent analysis.

6. Clean the instrument

After the test is completed, the dust and debris on the surface and internal components of the instrument should be cleaned in a timely manner.

Avoid using irritating or corrosive cleaning agents to prevent damage to the instrument.

3、 Maintenance and upkeep

The maintenance of particle strength testers is crucial to ensure their accuracy and stability. Here are some key maintenance measures:

1. Regular cleaning

After each use, the surface and internal components of the instrument should be promptly cleaned of dust and debris.

Use a soft cloth to wipe the surface of the instrument, avoiding the use of hard or rough fabrics.

Be careful not to damage the surface and internal components of the instrument during cleaning.

2. Lubricate mechanical components

The mechanical part needs regular lubrication to maintain its normal operation.

Regularly apply lubricating oil or grease according to the usage of the instrument to ensure the smooth movement of its moving parts.

3. Regular inspection and calibration

Regularly check whether all components of the instrument are intact, and replace them promptly if they are damaged or worn.

Especially for key components such as sensors and measuring heads, their status should be regularly checked to ensure the normal operation of the instrument.

Regularly calibrate instruments to ensure the accuracy of measurement results. It is recommended to calibrate the instrument once a month to ensure its accuracy and stability.

4. Storage environment

The particle strength tester should be placed in a dry and dust-free environment to avoid the influence of moisture and dust on the instrument.

When storing, the instrument should be covered to prevent dust and debris from entering the interior of the instrument.

Maintain appropriate indoor humidity to prevent instruments from getting damp.

5. Power management

The particle strength tester should use an appropriate power supply and ensure stable power supply.

Avoid using excessive voltage or current to prevent damage to the instrument.

When not in use, the power should be turned off promptly to save energy and extend the lifespan of the instrument.

6. Long term storage

When not in use for a long time, it should be stored in a dry and dust-free place, and the surface of the instrument should be kept clean.

Regularly power on and operate the instrument to maintain the normal operation of its internal components.

It is recommended to turn on the instrument once a month to prevent damage caused by moisture or prolonged disuse.

7. Spare parts and consumables management

For the convenience of repairing and maintaining the particle strength tester, commonly used spare parts and consumables should be prepared.

Establish a spare parts and consumables management system, regularly check inventory status, and promptly replenish required spare parts and consumables.

This can shorten the repair time and reduce the impact on normal use.

4、 Application Fields

1. Medical field

In the pharmaceutical process, it is necessary to test the particle strength of raw materials to ensure that they meet production requirements.

It can also be used to test the stability of drugs during packaging, transportation, and storage.

2. Food sector

In the food industry, it can be used to detect physical properties such as brittleness and hardness of food.

For example, in the production process of candies, cookies, and other foods, it is necessary to test the strength and hardness of the particles to ensure their taste and quality.

3. Chemical industry field

In chemical products, it can be used to detect the strength and hardness of particulate materials such as catalysts and fillers.

The strength and hardness of these particulate materials are of great significance for their performance and stability in chemical reactions.

4. Materials Science

In the field of materials science, it can be used to study the mechanical properties and deformation behavior of granular materials.

By testing the strength and hardness of different granular materials, their internal structure and microscopic mechanisms can be revealed, providing theoretical basis for material design and application.

5. Environmental Engineering

In environmental engineering, it can be used to detect the strength and hardness of particulate materials such as soil and sediment.

The strength and hardness of these particulate materials have a significant impact on their performance and stability in the environment.

5、 Common faults and troubleshooting methods

During the use of particle strength testers, some common malfunctions may be encountered. Here are some common faults and their troubleshooting methods:

1. No display on the monitor

Check if the power is connected and if the power cord is securely plugged in.

Check if the monitor connection cable is loose or damaged.

If all of the above are normal, it may be a malfunction of the monitor itself, and the manufacturer needs to be contacted for repair or replacement.

2. Inaccurate measurement values

Check if the instrument has been calibrated and confirm if the calibration results are qualified.

Check if the fixture is clamping the sample and if the sample is placed correctly.

Check whether the sensor is damaged or contaminated, and clean or replace it if necessary.

3. The instrument has loud noise

Check whether the mechanical components are loose or damaged, and tighten or replace them if necessary.

Check if the lubrication is sufficient and add lubricating oil or grease if necessary.

Check if the motor is working properly. If there are any abnormal sounds or vibrations, contact the manufacturer for repair.

4. The instrument cannot be started

Check if the power supply is functioning properly and if the power cord is securely plugged in.

Check if the fuse is blown and replace it if necessary.

If all of the above are normal, it may be an internal circuit fault of the instrument and the manufacturer needs to be contacted for repair.