With the motivation of achieving non-invasive position and intensity measurements at 4.5 MHz for hard X-rays, the X-ray Photon Diagnostics (XPD) group initiated an R&D project on the development of diamond sensors[1,2] . In particular, at very hard X-rays the gas-based devices lose sensitivity and diamond-based sensors are a useful complement. A diamond sensor with duo lateral electrode geometry mounted on an XY motorized manipulator consisting of a 40 µm electronic grade single crystal CVD diamond with graphitized surfaces was attached to the K-monochromator vacuum chamber in the SASE2 tunnel XTD1. The first functional tests were performed in July and further measurements were made during a facility development study in November at a photon energy of 30 keV. The preliminary results show that the diamond sensor delivers pulse-resolved beam position and intensity measurements at 2.25 MHz, and the results are in good agreement with the measurements (train-resolved) by the adjacent FEL-imager and XGM