Quick Air_OC4: How it Works

Product and Process Engineering Concepts

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The sample is collected directly from the process fluid by a piston and cylinder sampling arrangement. Referring to the Figure 1, as the Compression Handle is moved, the Sample Piston is pulled into the Cylinder. The Compression Piston follows, and enters the bottom of the Cylinder to isolate the sample. As the Compression Handle is moved further, the Sample Piston comes up against a stop. However, the Compression Piston continues to move, thereby compressing the sample. Figure 2 shows the position of the Sample Piston when a sample has been collected. The Compression Handle automatically holds the sample at a steady pressure due to the over-center lever arrangement. A flush-diaphragm pressure sensor (not shown) in the Sample Piston measures the pressure, and a linear position transducer (not shown) measures the movement of the Compression Piston. A microprocessor calculates the air content using the ideal gas law and displays the result digitally. The test takes only a matter of seconds.

Figure 1. Sampling

Figure 2. Testing




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