CiDRA AIRtrac, Installation, Operation & Support Manual

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21798-01-EN Rev 02 Page 33
5
OPERATION
Instruction for Use
Once the AIRtrac is installed and operational, no operator intervention
except replacing the battery in the hatch-mounted sensor is required
(see Section 4.3.4). The in-cab display shows the battery status. Only
trained service personnel should access the AIRtrac Mobile system.
Operating Controls
The AIRtrac Mobile system does not contain any operator controls
and automatically provides data for drum rotation, concrete
temperature, air % and battery charge level provided the following
conditions are met:
•
A minimum of approximately two (2) yards of concrete in the
drum
•
The drum is rotating in the charge direction between 0.5 rpm
and 6 rpm
•
The concrete slump is greater than approximately 2 inches
•
The concrete water-to-cement ratio (w/c) is greater than
approximately 0.3
Once the above conditions are met, the AIRtrac Mobile sensor will
begin initialization. Initialization is complete when the drum is rotated
in the charge direction, between 0.5 and 6 rpm, for eight (8)
revolutions. Once the eight (8) revolutions are achieved the concrete
air percent and temperature will be displayed.
In-Cab Display
The in-cab display shows concrete air content (%), concrete
temperature (

F or

C), drum speed (rpm) and sensor battery charge
level (% remaining).
The In-Cab Display (Option 1, see Section 4.5.1) has four pushbuttons
as shown in Figure 23.
Figure 23: Display Pushbuttons
Press left-most button to display the menu. Press the left/right arrow
buttons to navigate through a menu. Press the right-most return key to
select a highlighted menu item. At any time when the menu is