1. Go to SETUP and then CONFIGURE, then go to CAL CONFIG MENU and change the
“lower/higher air sample difference” to 20 fpm. This will allow you to successfully
calibrate with values of a minimum of 20 fpm difference.
2. While in CAL CONFIG MENU, change the “sensor difference” from 10% to 3%.
3. While in CAL CONFIG MENU, adjust the red low air alarm to the desired setting such
as 60 fpm. Then adjust the yellow “CAUTION or WARNING” to 63 fpm. Then adjust
the “CAUTION or WARNING” air reset to 3 fpm. This sets the alarm condition and can
be altered as desired.
4. To complete the CAL CONFIGURATION, be sure to enter “DONE”.
5. To start the calibration mode, use the Labconco 1000 Manual and enter
“CALIBRATION” mode on the display from the SETUP menu.
6. Follow the instructions on the display and alter the low face velocity by altering the sash
position to its most open position. Measure the average face velocity and enter the low
value on the display. Be careful not to block the opening. The low exhaust velocity
calibration will take about 5 seconds.
7. Now alter the high exhaust velocity by altering the sash position to a lower open position.
Measure the average face velocity and enter the high value on the display. The high
value must be at least 20 fpm greater than the low value. The high exhaust velocity
calibration will take about 5 seconds.
8. Be sure to enter “DONE” after successfully completing the low and high calibration set
points.
9. Once calibration is completed go to “RUN” and hit “ENTER”. The value should read
close to the high calibration set point where the sash was left in its last position.
10. Recheck the face velocity with an anemometer to confirm the display on the digital
airflow monitor at various sash positions.
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