Abstract: The invention relates to a method of checking the working and/or the state of breathing equipment prior to its use, and also to an arrangement for carrying out the method. The breathing equipment includes a control circuit which, in turn, includes a programmed microprocessor (7), a sensor (10) mounted in the breathing equipment and connected to the microprocessor, and an indicating arrangement (11) connected to the microprocessor (7). The inventive method is characterized by activating the control circuit and therewith measuring or determining at least one functional or state parameter, comparing the measured parameter value with a control value, and indicating an acceptable or unacceptable value in the indicating arrangement (11).

Abstract: A method of verifying function and status of breathing equipment, wherein the breathing equipment includes a gas supply, a closure valve on the gas supply, a primary pressure regulator downstream of the closure valve, a pressure sensor, a secondary pressure regulator downstream of the primary pressure regulator, a breathing mask downstream of the secondary pressure regulator, an indicator, a processor connected to the pressure sensor and the indicator, and gas lines between the gas supply, the primary pressure regulator, the secondary pressure regulator, and the mask. A processor for receiving sensed data, comparing the sensed data to control values, and producing an output signal is activated. At least one functional or status variable within the equipment is measured. The at least one measured value is compared to a corresponding control value with the processor. An output signal based upon the comparison is produced.