Introduction
You can use the TSI 440 flowmeter or a single rotameter to measure the flow rate of your particle profiler.
When measuring the flow rate of the particle profiler, it’s important to use a buffer chamber to ensure accurate measurement. The buffer chamber is part of the zero filter and flow assembly. It is also part of your monitor’s service kit.
To understand how often you should perform this service activity, click here.
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Enter service mode so any fluctuations in the data caused from this activity can be excluded from air quality reports.
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The flow rate of the particle profiler is 1.0 ± 0.05 LPM (between 0.95 and 1.05 LPM).
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A constant 1.0 LPM flow is essential to ensure monitor is measuring correctly.
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Remove the TSP head from the top of the particle inlet and attach the flow adaptor on your flow assembly.
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Attach the flow assembly to a 0-2.5 LPM volumetric flowmeter.
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If using the single rotameter, connect the assembly to the top port of the flowmeter (negative flow).
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Attach a flow buffer chamber between the flowmeter and inlet to smooth the flow coming from the diaphragm pump.
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Ensure the flow meter is on a steady surface before reading the flow rate.
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Adjust the sample flow by pulling the adjustment knob outwards, turning the knob to increase/decrease flow, and pushing the knob back in to lock when desired flow has been reached.
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If the flow isn't correct, adjust the sample flow adjustment valve, which is located on the face plate of the pump module, until the flow reads 1.0 ± 0.05 LPM (between 0.95 and 1.05 LPM).
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On older monitors, the sample flow adjustment valve is positioned at the bottom of the enclosure under the PDI cover.
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If you can't reach 1.0 ± 0.05 LPM, there may be a leak, the sample and purge filters may be dirty, or the pump may need replacing.
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For further support, contact Technical Support.
For further support, contact Technical Support.
