Operating; Language Selection; Measurement Procedure; Specific Functions - Chauvin Arnoux C.A 1224 Notice De Fonctionnement

2. OPERATING

2.1

Language selection

When the device is off, keep the SELECT button pressed and
then press the ON / OFF button.
Press SELECT to choose English or French, press OK to
validate.
2.2

Measurement procedure

1. Activate the device by pressing the ON / OFF button.
2. Choose the desired measurement unit for temperature and
air velocity (See Menu).
3. Choose the variable to be measured: air velocity and
temperature or air flow (see Menu).
4. Place the probe in the correct air flow direction. For more
accurate results, try to keep the axis of the vane within 20°
of the air flow direction.
5. Wait a few seconds for the measurements to stabilise.
6. If necessary, freeze the display by pressing HOLD.

3. SPECIFIC FUNCTIONS

3.1

Choosing the measurement units

Press SELECT to enter the menu.
Scroll down the menu with SELECT.
When UNITS appears, enter with OK.
Scroll down the air velocity measurements units by pressing
SELECT.
Press OK to validate your choice.
Proceed the same way with the temperature measurements
units.
3.2 Making an average calculation
Press SELECT to enter the menu.
When AVERAGE appears, enter with OK.
To start the average calculation press OK.
Press OK again to stop the calculation. The result is displayed
on the screen.
To start another calculation, proceed the same way.
To escape the function, press "ON / OFF / ESC".
3.3 Making an air flow calculation
Press SELECT to enter the menu.
Scroll down the menu with SELECT.
When FLOW appears, enter with OK.
Choose the type of duct: RECT. for rectangular or CIRC. for
circular with SELECT and validate with OK.
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