摘要:
A gas instrument determiner section included in a flow meter device determines whether or not a gas instrument in use is a fuel cell, by comparing an actual measurement value of a gas flow measured at first measurement time intervals in a first determination operation period from when inflowing of the gas starts until a predetermined time lapses, to determination flow data, and by comparing an actual measurement value measured at second measurement time intervals longer than the first measurement time interval in a second determination operation period which ends after the first determination operation period ends, to determination flow data. This makes it possible to accurately determine the gas instrument in use even when the gas instrument in use is the fuel cell.
摘要:
A gas shutoff device (30A ~ 30C) of the present invention is configured such that a control means (33) determines that it inhibits a shutoff means (39) from being returned from a shutoff state to a supply state, when a vibration has been detected by a vibration detecting means (50) and a fluid pressure measured by a pressure measuring means (32) has decreased to a value equal to or less than a predetermined pressure value. For example, the control means (33) causes the shutoff means (39) to switch to the shutoff state and disenables the return means (38) to return the shutoff means (39) to the supply state, when one of the vibration and the fluid pressure decrease has been detected and then the other has been detected within a predetermined time.
摘要:
A problem of the present invention is to provide a flow rate measurement device which is capable of simplifying calculation, reducing the amount of memory necessary for calculation, absorbing variations resulting from manual operation or ignition state when appliances are used alone or in combination, and improving appliance identification precision with a configuration which extracts characteristics of appliances. The flow rate measurement device monitors and determines the change in a flow rate measured by a flow rate measurement unit (104), monitors and determines the code obtained by differential conversion unit (112), extracts appliance characteristic flow rates representing the characteristics of the gas appliances (13, 14, and 15), and compares them with the appliance-specific characteristics, thereby identifying the gas appliances (13, 14, and 15).
摘要:
A gas flow detecting device of the present invention, comprises a gas flow obtaining unit (1), and a control unit (2), wherein the control unit (2) is configured to determine at second period intervals, whether or not the usage gas flow of a fuel cell system (20) can be obtained, based on the gas flow obtained by the gas flow obtaining unit, and the control unit (2) is configured to, when the control unit determines that the usage gas flow of the fuel cell system (20) can be obtained, calculate a total usage gas flow of the fuel cell system (20), based on a change amount of the gas flow obtained by the gas flow obtaining unit (8), and a usage gas flow of the fuel cell system (20) which is updated just before the determination, and the control unit is configured to, when the control unit determines that the usage gas flow of the fuel cell system (20) cannot be obtained, deem the usage gas flow of the fuel cell system (20) which is updated just before the determination, as the usage gas flow of the fuel cell system (20) in a period in which the usage gas flow cannot be obtained.
摘要:
The present invention provides a gas shutoff, device that prevents tampering procurement of gas or tamper due to stealing of the gas shutoff device. When an event, in which a gas pressure value of a pressure measuring unit 32 after a predetermined operation performed by a provider in installation is kept equal to or less than a first predetermined pressure value for a first predetermined time or longer and then the gas pressure value is kept equal to or more than a second predetermined pressure value for a second predetermined time or longer, happens at a predetermined number of times, the gas is shut off by a shutoff unit 39, communication with the outside is performed by an external communication unit 34, restoration is permitted by a restoring unit 38 while when there is a predetermined operation by the provider after the shutoff, the restoration permission state implemented by communicating with the outside by the predetermined operation by the provider and inputting communication of a response from the outside.
摘要:
A gas meter (1) of the present invention includes a flow measuring section (12) for measuring a flow value of a gas flowing through a fluid passage 2 connected to a gas instrument (4a to 4c) at each specified time interval; a measurement flow memory (13) for storing the measured flow value; and a fuel cell determiner section (14) for determining that the instrument (4a to 4c) using a gas is a fuel cell, when a condition A and a condition B are satisfied, in which the condition A is such that a maximum value of determination target flow values is equal to or less than a second predetermined value, the determination target flow values being a predetermined number of flow values measured before and after a reference flow value which is equal to or greater than a first predetermined value and is closest to the first predetermined value, the determination target flow values being included in stored flow values, and the condition B is such that a difference value derived by subtracting from each of all of the determination target flow values, an average value found from the each determination target flow value and a predetermined number of measurement flow values measured before the each determination target flow value, is equal to or less than a third predetermined value.