Abstract: A fan-supported gas mask and breathing equipment with a fan unit with adjustable delivery output such that the delivery output of the fan and detection sensor will be automatically adjusted to the necessary filter property, depending on the type of the filter insert used. To achieve this, the filter connection (10) and the filter insert (16) are provided with a marking, which characterizes the filter property (particle filter or gas filter), on the one hand, and, on the other hand, actuates electric contacts for setting the necessary fan output and, if desired, for actuating a detection sensor.

Abstract: A pressure-measuring head for measuring the pressure of a fluid consists of a membrane-like diaphragm (6), which separates a pressure chamber (4) from a reference chamber (7), to which the pressure-sensitive elements, e.g., thick-film resistors or strain gauges, are applied. Under the effect of the pressure in the pressure chamber, these pressure-sensitive elements perform a deflection which is proportional to the pressure occurring in the pressure chamber. An electric contact is switched during simultaneous displacement of the membrane (6) arranged in a sensor housing by a predeterminable distance (19) after a defined pressure value has been reached in the pressure chamber. A measuring head of such a design is also able to assume a swithing function without additional auxiliary energy, besides sending an electrically processable pressure signal.

Abstract: A gas mask and breathing equipment with a respirator, to the respiration gas inlet of which a respiration gas filter and a respiration supporting blower unit are connected, is formed such that the components controlling the power output are arranged in areas that are favorable for operation and are able to control the blower unit in the case of a filter change or during changes in the state of loading of the built-in filters during operation such that they can be adapted to the changing performance characteristics. The housing of the blower unit (2) has a saddle-shaped upper part (5), over which a control unit (7), designed as an independent housing module, can be attached in a bow-like manner, and establishes the electrical and pneumatic connections to the blower unit.