CiDRA AIRtrac, Installation, Operation & Support Manual

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21798-01-EN Rev 02 Page 5
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INTRODUCTION
Introduction
CiDRA’s AIRtrac Mobile System is the first and only device to
continuously measure and report the air content of wet concrete in a
truck mixer drum while being transported from batch plant to job site.
This manual covers the basic installation, setup, operation and
maintenance of the AIRtrac Mobile System.
In all cases, local safety and operating practices take precedence over
the information contained within this document.
AIRtrac Mobile System, Hardware and Equipment
The AIRtrac Mobile System hardware consists of a drum-mounted
sensor, chassis-mounted receiver module, in-cab mounted display,
cellular telematics module, battery charger and associated
cables/connectors.
The sensor is mounted to a hatch adapter panel that replaces the
existing drum access hatch as shown in Figure 1. Numerous hatch
adapter panels are available to fit various truck mixer drum style.
The sensor is powered by a rechargeable battery and communicates
wirelessly to the receiver module which is mounted on the back of the
truck cab or to the truck frame as shown in Figure 2.
The in-cab display shows concrete air content (%), concrete
temperature (

F or

C), drum speed (rpm) and sensor battery charge
level (% remaining) as shown in Figure 3.
The telematics module uses cellular communication to transmit
measured data to a secure cloud server where it can be accessed
through web-based portal or through an API.
The battery charger is located inside the truck cab and is powered by
the truck 12 VDC power.
Note: The AIRtrac Mobile sensor housing is made of hardened
material that is well suited for the high abrasion environment inside a
concrete mixer. However, to prevent damage that would require
sensor replacement, care must be taken not to strike the face with a
jackhammer, chisel, etc.