QuickAir_OC8tm
Features
QuickAir_OC8tm is the only manually operated air measuring device which:
· Is able to measure process samples in place (no dipping and pouring)
· Provides an immediate digital readout
· Can easily be operated by unskilled operators
· Is capable of sampling process streams in place
· Is able to provide air measurements from 0.1% to 50%
QuickAir_OC8tm has many applications:
· Pulp and Paper
· Food
· Oil
· Pharmaceuticals
· Any application where precise
control of air content is required
QuickAir_OC8tm has many benefits:
· Timely identification of process problems
· Timely measurement of product quality
· Precise defoamer evaluations
· Improved environmental compliance
Specifications
Wetted Materials: 304SS
Measurement Range (Volume %): 0.1% to 50%.
Accuracy: (To obtain the specified accuracies, take the average of three samples.)
At low limit of 0.1%, actual air content may be between 0.075 and 0.125%.
At 10% air, actual air content may be between 9.9 and 10.1%.
At high limit of 50%, actual air content may be between 49 and 51%.
In general, Error = +/-( 0.025 + 0.00975 * Air)
Calibration: The tester is calibrated by running samples of 0% air (for example water with no entrained air). The microprocessor automatically calculates the calibration constant.
Seals: Buna Rubber
Weight: 7 lbs (3.2 kg)
Batteries: Three 9-volt, life 8-12 hours of continuous operation
Operating Limits:
Media Isolation: Cylindrical portion of the tester is compatible with fluids not corrosive to 304 SS, provided that the vent line is not exposed to corrosive fluids. The electronics enclosure is not environmentally isolated, and may not survive fluid spaying, submergence, or exposure to corrosive gases. The QuickAir must be stored in a clean, dry area when not in use.
Temperature: Cylinder portion of tester is limited to operation between 32 and 200 F. Operation above 120 F may require re-zeroing of pressure transducer due to temperature effect on the pressure transducer zero. The electronics may be stored at temperatures between 32 and 150 F, and may be operated at ambient temperatures between 40 and 110 F.
Pressure: The tester is designed to obtain samples at atmospheric pressure. During testing, the normal maximum pressure is approximately 60 psig (4 bar gauge). The pressure transducer is rated for a maximum operating pressure of 100 psig (6.8 bar gauge). It will remain linear to an overpressure of 200 psig (13.8 bar gauge), and will fail at 400 psig (27.2 bar gauge).
How it Works
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.
