Abstract: To enhance the precision in balancing measurement, an electronic balance is provided. The electronic balance includes a door open/close detection sensor 3 for detecting the open/close of a door 52; a weighing precision setting unit, for setting a weighing precision; a calculation unit, for calculating an average time for balancing measurement that is as short as possible and satisfies the weighing precision or an average number of pieces of data; and a selection unit, for selecting an average time for weight measurement or an average number of pieces of data when the opening of the door 52 is detected by the sensor 3, and selecting an average time of normal measurement or an average number of pieces of data when the closing of the door 52 is detected by the sensor 3, and an averaging process is performed with the average time or the average number of pieces of data that is being selected.

Abstract: [Problems] To obtain a stable measurement result in both a measuring-out mode and normal mode, and to obtain a weight value eliminating the influence of convection in the windshield. [Means for Solving Problems] An electronic balance with a windshield 51, the windshield surrounding a measuring pan 53 and having an openable/closable door 52, for averaging measurement data in a response time and obtaining a weight value based on it, the electronic balance including: a door open/close detection sensor 3 for detecting an open/close of the door 52; and a mode changer for switching the measurement mode between a measuring-out mode in which the response time is relatively short when the door 52 is open, and a normal mode in which the response time is relatively long when the door 52 is closed.

Abstract: An electronic balance is provided, in which a tolerance resulting from temperature variation is variable and a frequency for sensitivity calibration corresponds to the tolerance. A load detecting portion 1 detects a load of an object to be weighed 12, a processing portion 2 converts a detecting signal from the load detecting portion 1 into a mass value, transmits the mass data to a display portion 3, and controls a sensitivity calibrating mechanism 6a to perform a sensitivity calibration by increasing or reducing internal weights 13 on the load detecting portion 1. An operation control program of the processing portion 2 is built with a tolerance input function 21, a sensitivity calibration execution condition calculating function 22, and a sensitivity calibration execution determining function 24. Whenever the temperature variation reaches or exceeds an allowable temperature variation ?T, a sensitivity calibration is performed.

Abstract: To enhance the precision in balancing measurement, an electronic balance is provided. The electronic balance includes a door open/close detection sensor 3 for detecting the open/close of a door 52; a weighing precision setting unit, for setting a weighing precision; a calculation unit, for calculating an average time for balancing measurement that is as short as possible and satisfies the weighing precision or an average number of pieces of data; and a selection unit, for selecting an average time for weight measurement or an average number of pieces of data when the opening of the door 52 is detected by the sensor 3, and selecting an average time of normal measurement or an average number of pieces of data when the closing of the door 52 is detected by the sensor 3, and an averaging process is performed with the average time or the average number of pieces of data that is being selected.

Abstract: In the electronic balance according to the present invention, in the menu list in which basic menu list information wherein predetermined many menu items are tree-structured and user menu list information stored in a nonvolatile memory when a user registers at will a calculation function or other functions which the user frequently uses are incorporated, it is possible to select an intended menu item, by moving in the same layer and moving to the lower layer step by step in accordance with a predetermined key operation. Since the setting/cancellation of the menu item, e.g. the function 8, that the user often uses is provided in the lower layer of my menu which has a high priority, it is possible to select it with a small number of key operations compared to the case where the selection is performed by following the tree structure step by step, e.g. from the menu group 2 to the function 8.

Abstract: [Problems] To obtain a stable measurement result in both a measuring-out mode and normal mode, and to obtain a weight value eliminating the influence of convection in the windshield. [Means for Solving Problems] An electronic balance with a windshield 51, the windshield surrounding a measuring pan 53 and having an openable/closable door 52, for averaging measurement data in a response time and obtaining a weight value based on it, the electronic balance including: a door open/close detection sensor 3 for detecting an open/close of the door 52; and a mode changer for switching the measurement mode between a measuring-out mode in which the response time is relatively short when the door 52 is open, and a normal mode in which the response time is relatively long when the door 52 is closed.

Abstract: A weight measuring device comprises a load detecting section for constantly detecting a load value (W) of a sample placed on a measuring pan; a moving average processing section for calculating a moving average (Wa) of the detected load value (W); a load changing rate calculating section for calculating a load changing rate per unit time (Wb) of the detected load value (W); a storage section for storing a first load change threshold (Wr1), a second load change threshold (Wr2) which is smaller than the first load change threshold (Wr1) and a load changing rate threshold per unit time (Wt); a determining section for determining whether a moving average processing should be executed; and a weight conversion processing section for calculating a weight of the sample from the load (W) or the moving average (Wa).

Abstract: In electronic balance, an analog computation portion determines at least a differential control signal according to an amount of displacement of a beam. A digital computation portion determines at least an integral control signal is determined by after the amount of displacement of the beam is digital-converted. The control signal component determined by the digital computation portion is analog-converted. Thereafter, a synthetic PID control signal is determined by being synthesized from a resultant signal and the control signal component, which is determined by the analog computation portion. Subsequently, a coil current based on the synthetic PID control signal is passed through the coil. A weight value is obtained according to the control signal component determined by the digital computation portion.

Abstract: A weight measuring device comprises a load detecting section for constantly detecting a load value (W) of a sample placed on a measuring pan; a moving average processing section for calculating a moving average (Wa) of the detected load value (W); a load changing rate calculating section for calculating a load changing rate per unit time (Wb) of the detected load value (W); a storage section for storing a first load change threshold (Wr1), a second load change threshold (Wr2) which is smaller than the first load change threshold (Wr1) and a load changing rate threshold per unit time (Wt); a determining section for determining whether a moving average processing should be executed; and a weight conversion processing section for calculating a weight of the sample from the load (W) or the moving average (Wa).

Abstract: In electronic balance, an analog computation portion determines at least a differential control signal according to an amount of displacement of a beam. A digital computation portion determines at least an integral control signal is determined by after the amount of displacement of the beam is digital-converted. The control signal component determined by the digital computation portion is analog-converted. Thereafter, a synthetic PID control signal is determined by being synthesized from a resultant signal and the control signal component, which is determined by the analog computation portion. Subsequently, a coil current based on the synthetic PID control signal is passed through the coil. A weight value is obtained according to the control signal component determined by the digital computation portion.

Abstract: An electronic balance provided with a self-diagnosis function comprises a connection port for connecting the electronic balance to an external communication terminal. When a self-diagnosis function is performed, the previously stored address in the electronic balance is used to connect the electronic balance over a line to a specific Web site through the external communication terminal connected to the connection port so as to transfer a diagnosis data to the Web site. At the Web site, the diagnosis data is evaluated and the evaluation result containing measures to be taken in response to the diagnosis data is returned. The electronic balance displays contents of the returned data on a display section.

Abstract: After power supply, a CPU, serving as warm-up duration calculation clock, calculates duration for warm-up operation from temperature characteristic data of a load detection part on the basis of a power shut down duration, for notifying it's warm-up operation state by a display device on the basis of the calculated duration for warm-up operation.

Abstract: An electronic balance provided with a self-diagnosis function comprises a connection port for connecting the electronic balance to an external communication terminal. When a self-diagnosis function is performed, the previously stored address in the electronic balance is used to connect the electronic balance over a line to a specific Web site through the external communication terminal connected to the connection port so as to transfer a diagnosis data to the Web site. At the Web site, the diagnosis data is evaluated and the evaluation result containing measures to be taken in response to the diagnosis data is returned. The electronic balance displays contents of the returned data on a display section.

Abstract: After power supply, a CPU, serving as warm-up duration calculation means, calculates duration for warm-up operation from temperature characteristic data of a load detection part on the basis of a power shut down duration, for notifying it's warm-up operation state by a display device on the basis of the calculated duration for warm-up operation.

Abstract: The present invention relates to a plant virus vector comprising a foreign gene linked downstream of a coat protein gene of tobacco mosaic virus via a nucleotide sequence which cause the readthrough, and a plasmid which is transcribed to provide the vector, as well as a process for expression of a foreign gene in a plant by inoculating the plant with the vector.In addition, the present invention relates to a process for efficiently recovering a foreign gene product produced in a plant as virions.

Abstract: In an automotive heating system, an engine coolant circuit for circulating engine coolant through an engine of a vehicle is provided with a heat exchanger for transferring heat between the engine coolant and air, and a heat accumulator which stores heat of the engine coolant. The engine coolant circuit has a first coolant circulating path through which the engine coolant from the engine passes the heat accumulator and the heat exchanger in this order and a second coolant circulating path through which the engine coolant from the engine passes the heat exchanger and the heat accumulator in this order. The engine coolant is caused to circulate through the first coolant circulating path when the temperature of heat stored in the heat accumulator is higher than the temperature of the engine coolant while heating is required and through the second coolant circulating path when the former temperature is lower than the latter temperature while heating is required.

Abstract: A controlled atmosphere storage system which is so arranged that a refrigerator and a carbon dioxide generator are connected to each other, and a purifying catalyst, an air preheater, a cooler, a circulating blower and a scrubber are disposed at the downstream side in that order, with the scrubber and the refrigerator being connected, whereby time required for stabilization of combustion may be reduced as compared with conventional systems, and combustion under a low oxygen concentration can be maintained, while flow-out of controlled atmosphere gas outside the refrigerator or entry of atmosphere into the refrigerator can be prevented. Moreover, by forming the carbon dioxide generator in a double wall construction to fill a space with air containing carbon dioxide, heat insulating property is improved for facilitation of combustion under a lower oxygen concentration than in the conventional systems.

Abstract: Iron-base sintered alloys, characterized by high density and good hardness, have been prepared by sintering an iron-base particulate material at a temperature within the range at which an alloy consisting of said particulate material will form a solid-liquid phase.