ELIOS 2 RAD USER MANUAL Page 4 of 15
3Elios 2 RAD
Elios 2 RAD is a specially modified Elios 2 designed to carry a dosimetry detector module. Apart from the
mounting bracket for the detector module, and the modified casing with a connector, all user changeable
parts are compatible with a standard Elios 2. There is no significant change in flight behaviour and collsion
resilience, though flight time is reduced slightly due to the added weight of the sensor module.
4ELIOS 2 RAD detector module
This module allows Elios 2 RAD to measure ambient radiation. At its core, the sensor module has an energy-
compensated Geiger-Müller tube capable of detecting both Gamma and X-rays.
The sensor module is removable for calibration, but can only be installed on the specially modified Elios 2 RAD
drone. To remove the sensor, undo the straps that hold in it place, and disconnect the cable that plugs into
the body of the drone.
Elios 2 RAD is shipped with three detectors, each detector is designed for a specific dose rate range
Out of range behaviour
The Elios 2 RAD detectors will provide accurate readings within their specified range. Below a certain
threshold it will display zero, with occasional spurious. Such readings serve as an indicator that the detector
is still operational, but the values should be ignored, and it can be assumed that the actual dose rate is lower
than the threshold level.
Above the maximum range the detector reaches its saturation point, above this value, the reading will
continue to rise but it will no longer be accurate.
