Sensor device particularly for maritime applications

• US 10,641,674 B2
• Filed: 08/12/2016
• Issued: 05/05/2020
• Est. Priority Date: 09/12/2015
• Status: Active Grant

• Current Assignee: Hydac Electronic GmbH
• Original Assignee: Hydac Electronic GmbH
• Inventors: Morsch, Joachim, Erath, Tobias
• Primary Examiner(s): Patel, Harshad R
• Assistant Examiner(s): Plumb, Nigel H
• Application Number:
  US15/756,181
• Publication Number:
  US 20180313712A1
• Time in Patent Office: 1,362 Days
• CPC Class Codes: G01L 19/0618 Overload protection
• CPC Class Codes: G01L 19/144 with dismountable parts, e.g. for maintenance purposes or for ensuring sterile conditions for detachable interface or adapter between the process medium and the pressure gauge G01L19/003
• CPC Class Codes: G01L 19/149 of immersion sensor, e.g. where the sensor is immersed in the measuring medium or for in vivo measurements, e.g. by using catheter tips

Abstract

A sensor device, particularly for maritime applications, includes a housing (1) with a pressure connection (7) leading to a pressure sensor (9) that transmits measurement data using a transmission device (17, 19), and with at least one closeable passage opening (31) for connecting the surroundings to at least parts (33) of the housing interior in which the pressure sensor (9) is arranged. The pressure sensor (9) is surrounded by an incompressible medium that is separated from the surroundings by an elastically-yielding, media-tight separating arrangement (49).

Claims

1. A sensor device capable of being used in maritime applications, the sensor device comprising:

a housing having a pressure connection;

a pressure sensor inside said housing having a first sensor side connected to said pressure connection and exposed to a system fluid pressure conveyed via said pressure connection, said pressure sensor transmitting pressure measurement data by a transmitter, said pressure sensor having a measuring cell on a second sensor side of said pressure sensor opposite said first sensor side;

a closeable passage opening extending from an exterior to an interior of said housing connecting surroundings of said housing to a pressure chamber in said interior of said housing;

an incompressible medium surrounding said pressure sensor; and

an elastically yielding, media-tight separator separating fluid in said pressure chamber and the surroundings from said measuring cell.

2. A sensor device according to claim 1 wherein

said pressure sensor is connected to a circuit board in said housing, said circuit board being connected to connection cables capable of being connected to an analyzer of the pressure measurement data and forming said transmitter.

3. A sensor device according to claim 2 wherein

said pressure sensor and said circuit board are held in a receiving bracket in said housing.

4. A sensor device according to claim 1 wherein

said separator comprises a rolling diaphragm having a cup-shaped interior part folded over a deflection point, said cup-shaped interior part being engaged in a pot-shaped widening of a receiving part at least in an initial state of said rolling diaphragm.

5. A sensor device according to claim 4 wherein

said rolling diaphragm comprises a free edge secure in a receiving chamber of said receiving part, said receiving part being tubular, said rolling diaphragm being continuously exposed to ambient pressure of the surroundings.

6. A sensor device according to claim 4 wherein

said receiving part is arranged centrally in said housing and extends through a partition of said housing, said partition having a passage opening closeable with a sealing screw.

7. A sensor device according to claim 6 wherein

said pressure sensor is connected to a circuit board in said housing, said circuit board being connected to connection cables capable of being connected to an analyzer of the pressure measurement data and forming said transmitter;

and

said connection cables extend through said partition.

8. The sensor device according to claim 6 wherein

said housing comprises a housing part being continuously connected to the surroundings via said passage opening and being open into a free end of a receiving chamber of said receiving part, said housing part adjoining said partition, said partition sealing a housing interior in a direction of said pressure sensor by a sealing screw.

9. A sensor device according to claim 6 wherein said passage opening has internal threads engaging said sealing screw.

10. A sensor device according to claim 1 wherein

said housing is submersed in water with said pressure sensor being in a compensated chamber.