LMEC-29 Pressure Sensor and Measurement of Heart Rate and Blood Pressure
Functions
1. Understand the working principle of the gas pressure sensor and test its characteristics.
2. Use gas pressure sensor, amplifier and digital voltmeter to construct a digital pressure gauge and calibrate it with a standard pointer pressure gauge.
3. Understand the principle of measuring human heart rate and blood pressure, use pulse sensor to measure pulse waveform and heartbeat frequency, and use the constructed digital pressure gauge to measure human blood pressure.
4. Verify Boyle’s law of the ideal gas. (Optional)
5. Use slow scanning long afterglow oscilloscope (need to be purchased separately) to observe the body pulse waveform and analyze the heart beat, estimate heart rate, blood pressure and other parameters. (Optional)
Main Specifications
| Description | Specifications |
| DC regulated power supply | 5 V 0.5 A (×2) |
|
Digital voltmeter |
Range: 0 ~ 199.9 mV, resolution 0.1 mVRange: 0 ~ 1.999 V, resolution 1 mV |
| Pointer pressure gauge | 0 ~ 40 kPa (300 mmHg) |
| Smart pulse counter | 0 ~ 120 ct/min (data hold 10 tests) |
| Gas pressure sensor | Range 0 ~ 40 kPa, linearity ± 0.3% |
| Pulse sensor | HK2000B, analog output |
| Medical stethoscope | MDF 727 |
Parts List
| Description | Qty |
| Main unit | 1 |
| Pulse sensor | 1 |
| Medical stethoscope | 1 |
| Blood pressure cuff | 1 |
| 100 mL syringe | 2 |
| Rubber tubes and tee | 1 set |
| Connection wires | 12 |
| Power cord | 1 |
| Instruction manual | 1 |
