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Teledyne API Ultrafine Particle Monitor - Model 651 Maintenance, Service, and Troubleshooting
07506C DCN6727 83
Figure 9-7
Model 651 Flow Schematic
The instructions below describe the procedure for checking the
aerosol sample flow. Use a similar procedure to check the auxiliary
and transport flows.
To check the aerosol flow, follow these instructions:
1. With the instrument powered on, press SETUP on the Home
screen, then press INLET FLOW.
2. Select 0.12 L/min as the setting. This value is nominal for the
aerosol sample flow. Your actual inlet flow value may be slightly
different, and depends on characteristics of the critical sample
flow orifice. The actual flow for your orifice is displayed as an