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BT-610-9800 Rev C
5.7.
Calibrate Flow Screen
The BT-610 has a factory calibrated flow rate of 0.1 CFM (2.83 LPM). Under normal
circumstances, the integrated flow control system will maintain flow /- 5% of this
flow rate. Use the following procedure to calibrate the flow rate when a periodic flow
rate check (Section 9.1.2) indicates a flow rate error greater than +/- 5%.
1. Connect a reference flow meter to the inlet fitting on the top of the unit.
2. Access the Calibrate Flow screen by pressing Menu then select Calibrate Flow. The
pump will start automatically when you enter the Calibrate Flow screen and stop
when you leave the screen. The system will wait several seconds for the flow to
stabilize. During this time, the unit will display
“Waiting...”
3. Afterwards, use the up and down arrow keys to adjust the flow until the reference
flow meter reads within tolerance. You will need to wait a few seconds after each
adjustment for the flow system and the reference meter to stabilize. Figure 20
shows an example of the Calibrate Flow Screen.
4. When the desired flow rate is reached, press ENTER to set the calibration.
5. Exit the Calibrate Flow screen by pressing the ESC button (the pump will stop).
CALIBRATE FLOW
ADJUST FLOW ▲▼
ENTER TO SET
Figure 20
– Calibrate Flow
5.8.
Set Sizes Screen
The BT-610 has six standard factory calibrated particle sizes. These standard sizes will
support most applications and provide the best size accuracy (+/- 10%). This unit also
supports custom sizes. These sizes are configured using the Set Sizes Screen (Figure
21). Custom size thresholds are interpolated using the standard size calibration curve.
Therefore, the size accuracy for custom sizes is somewhat reduced (+/- 15%).
SET SIZES
0.3µ 2.0µ
0.5µ 5.0µ
1.0µ 10.0µ
Figure 21
– Set Sizes Screen
The unit sorts sizes from small to large after each size change. Duplicate sizes are not
allowed. Any attempt to set two or more sizes to the same value will result in a
“DUPLICATE SIZES!” warning message.
5.9.
Set Clock Screen
To set the date and time select SET CLOCK from the menu. Figure 22 shows the Set
Clock Screen and the following table describes the date and time formats.
