Lab Equipment for Teaching Physics

Features

• Versatile medical application

• Educational focus on hands-on experience

• Comprehensive guidance




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Introduction

Pressure measurement is a critical aspect of both scientific and medical applications. While traditional methods such as pointer pressure gauges have been widely used, the integration of pressure sensors to convert pressure into an electrical signal offers a more accurate and efficient method for digital display and monitoring. The LEMI-65 Apparatus is specifically designed to explore the characteristics of pressure sensors and their applications in medical fields, particularly in measuring human heart rate and blood pressure.

This teaching apparatus is ideal for medical undergraduates and graduates, providing an in-depth understanding of how pressure sensors work, how to calibrate digital pressure gauges, and how to apply these technologies in clinical settings for monitoring human vital signs.

The LEMI-65 Apparatus allows students to conduct the following experiments:

1. Understand Gas Pressure Sensor Characteristics: Explore the working principle of the MPS3100 pressure sensor, which converts gas pressure into an electrical signal. Investigate its characteristics, such as linearity and accuracy, to better understand how pressure is measured and converted to digital values.

2. Construct a Digital Pressure Gauge: Learn how to use a gas pressure sensor, amplifier, and digital voltmeter to build a digital pressure gauge. Calibrate the constructed gauge using a standard pointer pressure gauge, ensuring the apparatus is accurate and reliable for medical measurements.

3. Measure Human Heart Rate and Blood Pressure: Use the pulse sensor to measure pulse waveforms and heartbeats. Combine these measurements with the digital pressure gauge to monitor and record human blood pressure. Understand the correlation between pulse frequency, heart rate, and blood pressure readings, essential for medical diagnostics.

4. Verify Boyle’s Law: (Optional) Explore the relationship between pressure and volume in a gas by conducting experiments to verify Boyle's Law. This experiment will help students understand the behavior of gases and their practical applications in pressure measurement.

5. Analyze Pulse Waveforms and Estimate Heart Rate: (Optional) Use an oscilloscope to observe and analyze body pulse waveforms, allowing for the estimation of heart rate, blood pressure, and other vital parameters. This experiment demonstrates how pulse data can be interpreted for clinical analysis.

The LEMI-65 Apparatus provides hands-on experience for students, enabling them to:

1. Gain practical knowledge of gas pressure sensors and their applications in medical diagnostics.

2. Learn how to construct and calibrate digital pressure gauges for accurate blood pressure measurement.

3. Understand the principles of blood pressure and heart rate measurement, essential for medical practices and healthcare.

4. Verify physical laws such as Boyle’s Law and explore their relevance in pressure measurement technologies.

5. Analyze pulse data to gain insights into human heart health and cardiovascular function.

The instruction manual includes clear experimental configurations and setup instructions for each experiment, step-by-step guidance for using the apparatus to measure heart rate, blood pressure, and verify Boyle’s Law, detailed explanations of the principles behind pressure measurement, heart rate analysis, and blood pressure monitoring, and examples of experiment results and data analysis to enhance learning and understanding.

For further exploration of pressure sensors, heart rate, and blood pressure measurement, refer to the Experiment Theory and Contents The LEMI-65 Apparatus is an invaluable tool for medical physics students, offering essential practical experience in vital sign monitoring and pressure measurement techniques.

Main Specifications

Parts List