Waage mit Aktiver Wärmeflusssteuerung

Details

Veröffentlichungs-Nr.

EP3163269

Aktenzeichen

EP15192034

Anmeldetag

29. Oktober 2015

Veröffentlichung

8. Mai 2019

Erteilung

8. Mai 2019

Rechtsraum

EP

IPC

G01G23/48G01G21/22G01G21/28F25B21/02

Abstract

A balance (30) is configured as a single unit with a weighing pan (21) enclosed in a weighing compartment (22) and with a balance housing (23) adjoining the weighing compartment (22), wherein the balance housing (23) contains a weighing cell compartment (24) enclosing a weighing cell, an electronics compartment (25) containing electrical and electronic circuit elements, a thermoelectric heat pump module (27) and a heat flow controller (28). According to the invention, the balance (30) includes a means to determine a net heat flow (P net ) inside the balance housing (23) in the direction from the weighing cell compartment (24) to the electronics compartment (25) to make the quantity (P net ) available to the heat flow controller (28) as a control input. The thermoelectric heat pump module (27) is arranged inside the balance housing (23) and is regulated by the heat flow controller (28) based on the control input quantity (P net ) to generate an active heat flow (P A ) of a magnitude and direction to hold the net heat flow (P net ) at a level that essentially equals the rate of heat dissipation produced inside the weighing cell compartment (24).

Anmelder

Firma

Mettler-Toledo GmbH

Land

🇨🇭 Schweiz

Fachgebiete