AEROCET 532 Manual Rev B
Page 19
5.3.4. Flow
The
Flow
screen is where a flow calibration is performed. When this screen is
selected, a warning will appear to use an external flow meter to adjust the AEROCET
532 flow to 2.83 LPM. Select OK to proceed or CANCEL to exit.
The pump will start automatically when you enter the
Flow
screen and stop when you
leave the screen. Use the following procedure to adjust the flow rate when a periodic
flow rate check (Section 8.3) indicates a flow rate error greater than
±
5%.
1. Remove the isokinetic inlet.
2. Connect a reference flow meter to the inlet fitting on the top of the unit and allow
the flow to stabilize.
3. Twist the dial clockwise to increase the flow rate and turn the dial
counterclockwise to decrease the flow rate until the measured flow rate is 2.83
LPM (0.1 CFM)
±
5%.
4. Press the dial to save the calibration. Press ESCAPE to cancel without saving.
Figure 16 -
Flow
Screen
The progress bar shows the pump pulse width modulation (PWM) as a percentage. A
green progress bar means the PWM is in a good place. An orange progress bar
indicates the filter is getting close to needing to be replaced. A red progress bar
indicates the filter needs to be replaced.
Figure 17 -
Flow
Screen Progress Bar Color Changes
