A proto-type of a characteristic CXRC has been developed to visualize the contamination of Cs-134 and Cs-137 due to the FDNPS accident. It succeeded in reducing the weight of the camera body by measuring characteristic X-rays instead of gamma-rays. Currently, a sensor case with a wall thicker than that presented here is employed. The weight of the latest version of CXRC is 6.6 kg, which is much lighter than that of GCs. We will evaluate the performance of the proto-type of the CXRC in more detail in the future.