Startup
The AFA1000 must be field-calibrated once the
room air supply and exhaust is balanced. When
the unit is powered up, the following sequence
of events occurs:
1. The alarm performs a self-test of its
functions, LEDs and audible alarm
(approximately 3 seconds)
2. At the end of the delay, the unit will do one
of two
things:
a. If the monitor has been calibrated,
the unit enters normal operating mode
(displays airflow velocity, LED’s and audible
alarm enabled).
b. If the unit has not been calibrated,
the monitor will display “ Requires set up,
press Enter to continue”
Installation &
Calibration Guide
Airflow Monitor
AFA1000/2 MK3
Calibration
1. Press Enter from the “Requires set up” screen or if the monitor is in
the Run screen Press and Hold the Enter button for 5 seconds until
the Main Menu is displayed.
2. Using the + / - buttons select SET UP, then select CALIBRATION,
then enter the password (factory default password is 0-0-0-0, press
Enter to continue.
3. Open the sash to the normal operating height and measure the
face velocity using a calibrated instrument. Using the + / -buttons
enter the measured face velocity then press Enter, the monitor will
then sample the airflow for 5 seconds.
4. If the airflow sample is unstable the monitor will display “Deviations
too High”, follow the instructions to repeat the sample or quit the
calibration.
5. If the sample is accepted, lower the sash by half and measure the
face velocity using a calibrated instrument. Using the + / - buttons
enter the measured face velocity and press Enter, the monitor will
then sample the airflow for 5 seconds.
6. If the calibration is successful the monitor will return the Main
Menu, select RUN to go to normal operating mode.
7. If the airflow sample is unstable the monitor will display “Deviations
too High”, follow the instructions to repeat the sample or quit the
calibration.
Temperature Electronics Ltd. Unit 2, Wren Nest Road, Glossop SK13 8HB UK
T. +44 (0) 1457 865 635 F. +44 (0) 1457 868 843 E. [email protected]
w. www.tel-uk.com
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