ELECTRONIC BALANCE WITH WINDSHIELD

Title:

ELECTRONIC BALANCE WITH WINDSHIELD

Document Type and Number:

WIPO Patent Application WO/2006/082915

Kind Code:

A1

Abstract:

[PROBLEMS] To acquire stable measurement results in both weigh-out and normal modes and to obtain a weight value excluding the influence of the convection within the windshield. [MEANS FOR SOLVING PROBLEMS] An electronic balance comprises a windshield (51) surrounding a measuring pan (53) and having an openable/closable door (52) and is used to obtain a weight value by averaging measured data with the response time. The electronic balance further comprises a door opening/closure sensor (3) for detecting opening/closure of the door (52) and a mode switching function for selecting either a weigh-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. In a convection time measuring mode, the convection time until the variation of the measured data becomes within a predetermined width after the door is closed in a state that no sample is placed on the measuring pan (53) is measured and stored. In a normal measuring mode, a sample is placed on the measuring pan (53), the door (52) is closed, the measured data is averaged with a predetermined response time after the stored convection time has passed, and thus a weight value is calculated.

Inventors:

HAMAMOTO HIROSHI (JP)
SHIMAUCHI KUNIO (JP)

Application Number:

PCT/JP2006/301837

Publication Date:

August 10, 2006

Filing Date:

February 03, 2006

Export Citation:

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Assignee:

SHIMADZU CORP (JP)
HAMAMOTO HIROSHI (JP)
SHIMAUCHI KUNIO (JP)

International Classes:

G01G21/30; G01G21/28; G01G23/37

Foreign References:

JPH0523373B2	1993-04-02
JPH0247460Y2	1990-12-13

Other References: