Automatic Shut Off; Backlighting Setting - Chauvin Arnoux C.A 1224 Notice De Fonctionnement

Enter the length of the duct in the case of a rectangular duct:
modify each of the 4 digits with SELECT and validate with OK.
Proceed the same way with the width or the diameter in the
case of circular duct.
The measurement is displayed on the screen.
To modify the measurement unit once in the FLOW function,
follow the measurement unit choice procedure above.
To escape the FLOW function, press ON / OFF / ESC.
3.4 Making an air flow calculation with the C.A 825 cone
This function is available only if you possess an air flow
measurement cone C.A 825. Otherwise refer to paragraph 3.3
Making air flow calculation
Press SELECT to enter the menu.
Scroll down the menu with SELECT.
When C.A 825 CONE appears, enter with OK.
The air flow is immediately displayed.
For a measurement in supply, insert the vane in the cone with the
arrow (on the top of the vane) turned toward the outside of the cone.
For a measurement in exhaust, insert the vane in the cone with
the arrow turned toward the inside of the cone.
3.5 Hold, minimum and maximum values
To freeze the measurement on the screen, press HOLD / MIN
/ MAX one time.
For air velocity, press HOLD / MIN / MAX another time to
display the values min and max.
Press a second time to display the values for temperature.
To escape this function, press ON / OFF / ESC.
3.6

Automatic shut off

Press SELECT to enter the menu.
Scroll down the menu with SELECT.
Press OK to enter.
Choose the time you want for automatic shut off by pressing
SELECT.
3.7

Backlighting setting

Press one time backlighting button for level 1.
Press a second time for level 2.
Press a third time to switch off it.
3.8 Sound
Press SELECT to enter the menu.
Scroll down the menu with SELECT.
Press OK to enter.
Press SELECT to active / deactivate sound.
Press OK to validate your choice.
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