Particle Strength Tester

A particle strength meter is a device used to measure the strength and hardness of granular materials and is widely used in the pharmaceutical, food, and chemical industries. This instrument accurately measures the strength and hardness of particles, providing data support for scientific research and industrial production.

Working Principle

A particle strength meter applies external force to deform or fracture granular materials, recording the force changes during this process to calculate the particle's strength and hardness. Its main operating principles involve the following aspects:

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

2. Deformation Measurement Technology: In addition to measuring pressure, some particle strength meters can also measure the deformation of particles during the force application. This is typically achieved using strain gauges or laser ranging, providing a basis for calculating parameters such as the particle's elastic modulus.

3. Data Processing and Analysis: The controller processes and analyzes the received pressure and deformation data to calculate parameters such as particle strength and hardness. Some instruments can also store and print measurement results, facilitating subsequent analysis.

Operation

The operation of a particle strength meter is relatively simple, but some details require attention. The following is a typical operating procedure:

1. Sample Preparation

Select a representative particle sample and ensure that it is free of impurities or particulate matter.

Place the sample in a fixture and clamp it securely. The choice of fixture should be based on the shape and size of the particles.

2. Setting Test Parameters

Select an appropriate test method based on the test requirements, such as compression, fracture, or shear.

Set appropriate test parameters, such as applied force and test time. These parameters should be adjusted based on the properties of the particle material and the test requirements.

3. Calibration

Before each test, the particle strength meter must be calibrated to ensure accurate measurement results.

Calibration typically involves zero-point calibration and standard material calibration. Zero-point calibration involves adjusting the instrument to a no-load state, ensuring the displayed value is zero. Calibration with standard materials uses standard particles of known strength and hardness. The instrument is then adjusted to ensure that the measurement results are consistent with the standard values.

4. Starting the Test

Press the Start button, and the controller will begin applying force and recording the deformation force of the particle material.

The load cell records the measurement data and transmits it to the controller for processing.

5. Reading the Results

After the test is complete, the controller automatically calculates and displays parameters such as the particle material's strength and hardness.

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

6. Cleaning the Instrument

After the test is complete, dust and debris should be removed from the instrument's surface and internal components.

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

Maintenance

Maintenance of the particle strength tester is crucial to maintaining its accuracy and stability. The following are some key maintenance measures:

1. Regular Cleaning

Dust and debris should be removed from the instrument's surface and internal components after each use.

Use a soft cloth to wipe the instrument surface; avoid using hard or rough cloths.

Be careful not to damage the instrument's surface or internal components when cleaning.

2. Lubricating Mechanical Components

Mechanical components require regular lubrication to maintain proper operation.

Apply lubricating oil or grease regularly, depending on instrument usage, to ensure smooth movement of the instrument's moving parts.

3. Regular Inspection and Calibration

Regularly inspect all instrument components for integrity. Replace any damaged or worn components promptly.

In particular, check the condition of key components such as the sensor and measuring head regularly to ensure proper operation.

Regularly calibrate the instrument to ensure accurate measurement results. Monthly calibration is recommended to maintain accuracy and stability.

4. Storage Environment

The particle strength meter should be stored in a dry, dust-free environment to avoid the effects of moisture and dust.

When storing, keep the instrument covered to prevent dust and debris from entering the interior.

Maintain an appropriate indoor humidity to prevent the instrument from getting damp.

5. Power Management

The particle density meter should use an appropriate power supply and ensure a stable power supply.

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

When not in use, turn off the power promptly to save energy and extend the instrument's life.

6. Long-Term Storage

When not in use for an extended period, store the instrument in a dry, dust-free location and keep the instrument surface clean.

Regularly power on and operate the instrument to maintain the proper functioning of its internal components.

It is recommended to power on and operate the instrument once a month to prevent damage from moisture or prolonged disuse.

7. Spare Parts and Consumables Management

To facilitate the repair and maintenance of the particle density meter, frequently used spare parts and consumables should be available.

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

This will shorten repair time and minimize disruption to normal operation.