The EM4xxx datalogger system is fully IP68 rated. It consists of 3 main elements.
- Loop antennas. These are available currently in 3 diameters (45mm, 65mm and 80mm). All antennas come with 1.5m of cable. Antennas can be single or double, depending upon the RFID unit ordered being single or double.
- RFID Unit. This unit can be a single antenna or double antenna version. It is IP68 rated and comes with two connectors. One to the antenna(s) and one to the datalogger/battery unit. The unit contains a small amount of memory where 100 detections are stored. Once more than 100 detections occur, the data is transferred to the datalogger/battery unit where it is stored as a CSV file.
- The datalogger/battery unit. This contains the storage memory for the tag detections and a rechargeable lithium ion battery pack. This is charged by a 5V power supply (USB) and is connected by a mini USB connector. On the current pre-production trial units, the system is a fixed polling rate of 7 scans per second. Any tag detected will not be stored in memory again for a second to prevent too many “same event” storages. On future releases, polling time will be user configurable, as will the “same event” delay time for ignoring events within a user selectable time of one another.
The system comes with a standard 2m interconnect cable between the datalogger/battery unit and the RFID unit. Longer cables (5m or 10m) can be ordered at extra cost. Armoured conduit can also be ordered for this cable and is charged by the metre.
Due to Lithium battery shipping regulations by the airline industry we had to limit the maximum number of datalogger/battery units to 2. If you wish to order larger quantities you will need to split your total requirement into lots of 2 datalogger/battery units.