公开(公告)号：US20160305839A1

公开(公告)日：2016-10-20

申请号：US15103016

申请日：2014-11-14

Applicant: ENDRESS+HAUSER GMBH+CO. KG

Inventor： Raimund Becher ,  Anh Tuan Tham ,  Andreas Rossberg ,  Elke Schmidt

IPC: G01L19/14 ,  G01L9/00

CPC classification number: G01L19/142 ,  G01L9/0075

Abstract: The invention relates to a pressure sensor that can be used at low temperatures—in particular, at temperatures below −70° C.—comprising: a solid metal sensor body (1), having a front region (3) and a base (5) adjoining thereto, the front region (3) of which has a larger cross-sectional area than the base (5), and the front region (3) of which has an outer edge (11), which can be clamped by means of a fastening device to install the pressure sensor at the location of use; a recess (7), which is provided in the front region (3) and is open towards a front side of the front region (3) that faces away from the base (5); a metal measuring diaphragm (9, 9′), to which a pressure (p) to be measured is applied from outside during measurement operation and which can be deformed elastically depending upon the pressure, is arranged on the front side of the sensor body (1), closes off the recess (7) from the outside, consists of the same metal as the sensor body (1), and is spaced apart from the outer edge (11) of the front region (3); and an electromechanical transducer for detection, by means of measurement, of the pressure-dependent deformation of the measuring diaphragm (9, 9′), having at least one measuring element (55, 57), which is electrically insulated from the measuring diaphragm (9, 9′) and the sensor body (1) by means of an insulating element (51, 53).

Abstract translation: 本发明涉及一种可在低温下使用的压力传感器，特别是在低于-70℃的温度下使用 - 包括：具有前部区域（3）和基部（5）的固体金属传感器主体（1） ），其前部区域（3）具有比所述基座（5）更大的横截面面积，并且其前部区域（3）具有外边缘（11），所述外部边缘可以通过 用于在使用位置安装压力传感器的紧固装置; 凹部（7），其设置在所述前部区域（3）中并且朝向所述前部区域（3）的远离所述基部（5）的前侧开口; 在测量操作期间从外部施加测量压力（p）的金属测量膜（9,9'），并且可以根据压力弹性变形，设置在传感器体的前侧（ 1），从外部封闭凹部（7），由与传感器主体（1）相同的金属构成，并与前部区域（3）的外边缘（11）间隔开; 以及用于通过测量来检测测量膜片（9,9'）的压力变形的机电换能器，其具有与测量膜片电绝缘的至少一个测量元件（55,57） 9，9'）和传感器体（1）之间的绝缘元件（51,53）。

公开(公告)号：US20150298264A1

公开(公告)日：2015-10-22

申请号：US14440736

申请日：2013-10-28

Applicant: ENDRESS+HAUSER GMBH+CO. KG ,  FRIEDRICH-SCHILLER-UNIVERSITÄT JENA

Inventor： Andreas Rossberg ,  Elke Schmidt ,  Markus Rettenmayr ,  Peter Siegmund

IPC: B23K35/32 ,  B23K1/19 ,  B32B18/00 ,  C22C16/00 ,  G01L9/00 ,  B23K1/00 ,  B23K1/20

CPC classification number: B23K35/32 ,  B23K1/0008 ,  B23K1/19 ,  B23K1/20 ,  B23K35/325 ,  B23K35/40 ,  B23K2035/408 ,  B32B18/00 ,  C04B37/006 ,  C04B2235/9607 ,  C04B2237/122 ,  C04B2237/126 ,  C04B2237/127 ,  C04B2237/343 ,  C04B2237/592 ,  C04B2237/708 ,  C04B2237/72 ,  C22C16/00 ,  G01L9/0041

Abstract: An assembly comprising: two ceramic bodies, which are joined by means of a joint of an active hard solder, or braze, wherein the active hard solder, or braze, has a continuous core volume, which is spaced, in each case, from the ceramic bodies by at least 1 μm, and an average composition CK with a liquidus temperature Tl(CK), wherein the composition CK has a coefficient of thermal expansion α(CK), wherein α(CK)=m·α(K), wherein m≦1.5, especially m≦1.3 and preferably m≦1.2, wherein α(K) is the average coefficient of thermal expansion of the ceramic material of the ceramic bodies, wherein the joint has boundary layers, which border on the ceramic body, wherein at least one of the boundary layers, which lies outside of the core volume, has an average composition CB with a liquidus temperature Tl(CB), which lies not less than 50 K, preferably not less than 100 K, and especially preferably not less than 200 K, under the liquidus temperature Tl(CK) of the average composition CK of the core volume.

Abstract translation: 一种组件，包括：两个陶瓷体，其通过活性硬焊料或钎焊的接头连接，其中所述活性硬焊料或钎焊具有连续的芯体积，其在每种情况下间隔开， 陶瓷体至少为1μm，平均组成CK为液相线温度T1（CK），其中组成CK具有热膨胀系数α（CK），其中α（CK）= m·α（K） 其中m＆nlE; 1.5，特别是m＆nlE; 1.3，优选m＆nlE; 1.2，其中α（K）是陶瓷体的陶瓷材料的平均热膨胀系数，其中接头具有在陶瓷体上接合的边界层， 其中位于芯体外部的至少一个边界层具有液相线温度T1（CB）的平均组成CB，其不低于50K，优选不小于100K，特别优选不小于100K 小于200K，在液相线温度T1（CK）下的平均组成 CK的核心量。