A digital broadcasting system for transmittingreceiving a digital broadcasting signal and a data processing method are disclosed. The flow probe is adapted to be positioned in a humidified gases flow such as that which is provided to a patient in a hospital environment. The contact is opened for a voltage V corresponding to the forward direction of the transistor and a powering-on of the transistor that starts before the closure of the contact and ends after the closure. An expected lifetime of the electromagnetic transducer is calculated based on the derived quantity of variation in temperature. Further, the guide member is rotatably installed in the case of the inkjet printer by a bolt.