Introduction

Now that you know how to read a pressure gauge on paper, you will read three pressure gauges in the lab. Watch the following video on setting up your lab and refer to the lab instructions below to complete your lab.

Lab Materials

- FRL and pressure gauge
- 2 pressure gauge fittings
- 2 shutoff valves
- Hoses

Lab Instructions

1. Make sure you are wearing safety glasses.
2. Open the schematic for this lab: Schematic Trainer Lab #2-1.pdf
3. Before you connect air to your trainer, make sure both orange shutoff valves are off. After you have shutoff the valves, connect the black hose with the silver connection to the air supply.
4. Open the 1st orange shutoff valve, and leave the second orange shutoff valve closed. If you can't remember which one is #1 and #2, reference the video. (#1 Orange shutoff valve is before the FRL; #2 Orange shutoff valve is after the FRL.)
5. You should be reading pressure on all 3 gauges. Please tell me in your video what the beginning pressure is for Gauge #1, the Gauge #2 on the FRL, and Gauge #3.
6. In your video, adjust Gauge 2 on the FRL to read 50 PSI. Remember, counterclockwise lowers the pressure; clockwise raises the pressure. Also, remember that you must lift the adjustment knob on the FRL up, so that you can see the orange band before you can make adjustments. (Reference Trainer Lab #1 Video if you have questions on how to use the FRL.) Once you have adjusted the FRL to read 50 PSI, show me what gauge #1 reads, what the gauge on the FRL reads, and what gauge #3 reads.
7. Now adjust the gauge on the FRL to read 40 psi. In your video, show me what the reading on gauge #1 is, the gauge on the FRL, and what gauge #3 reads.
8. Shut off the #1 shutoff valve and open the #2 shutoff valve to relieve pressure from the system. Return the trainer to its original condition.

Submission

To complete this lab, submit your video according to the criteria in the rubric. When you submit your video, make sure I see your face. I will deduct points if I don't see glasses on your face.

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