ROMAP (ROsetta Lander MAgnetometer and Plasma Monitor) consists of the Rosetta Lander-Magnetometer (ROLAND) and the Lander Plasma Monitor (SPM). The Fluxgate-Magnetometer, designed and built lead-managed by the Institute for Geophysics und extraterrestrial Physics, is situated in zhe center of the experiment. It consists of two entwined ringcores plus pick-up coils and Helmholtz coils for each sensor axis. With a weight of less than 40 g it can perform measurements betweenn +/- 2000nT with a resolution of 10 pT. The IWF (Graz) and the MPE Garching joined the development and construction of the magnetometer and its electronics.
The plasma monitor, a cooperation between KFKI (Budapest),MPS (Katlenburg-Lindau) and IKI (Moskau), measures the electron and ion distribution in a wide energy range. Furthermore, a Penning sensor and a Pirani sensor for pressure measurements are available (10-8-10-3mbar respectively 10-3-10mbar). The electronics for both experiments are located inside the lander, the sensors, except for the pressure sensors,are mounted on a small boom.