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A method for at least providing at least a first and a second assembly for manufacturing, respectively, a first reference pressure chamber (1A) which in use in a pressure control device encloses a gas such that the gas is held under a first reference pressure, and a second reference pressure chamber

A method for at least providing at least a first and a second assembly for manufacturing, respectively, a first reference pressure chamber (1A) which in use in a pressure control device encloses a gas such that the gas is held under a first reference pressure, and a second reference pressure chamber (1B) which in use in a pressure control device encloses a gas such that the gas is held under a second reference pressure, wherein the first reference pressure differs from the second reference pressure, and wherein the pressure control device is suitable for feeding through, on the basis of the reference pressure, a fluid from a first space (I) in which a relatively high pressure prevails to a second space (II) in which a relatively low pressure prevails, the method comprising providing the first and the second assembly such that each assembly for forming the respective reference pressure chamber comprises a casing (3A, 3B) and a plunger part (11A, 11B), while the casing is closed at a first end and the plunger part can at least partly connect with the casing in or adjacent a second end of the casing and is then movable relative to the casing.

대표청구항 ▼

1. A method for manufacturing at least a first pressure control device and a second pressure control device, wherein the first pressure control device comprises a first reference pressure chamber and the second pressure control device comprises a second reference pressure chamber, the method compris

1. A method for manufacturing at least a first pressure control device and a second pressure control device, wherein the first pressure control device comprises a first reference pressure chamber and the second pressure control device comprises a second reference pressure chamber, the method comprising: manufacturing first and second casings such that the first and the second casings are substantially identical to each other and that each casing has a closed end and an open end;manufacturing first and second plunger parts such that the first plunger part and the second plunger part have an equal outer contour which is provided with at least one recess, wherein the dimension of the recess of the first plunger part is different from the dimension of the recess of the second plunger part and/or wherein the position where the recess of the first plunger part is situated is different from the position where the recess of the second plunger part is situated,assembling the first plunger part and the first casing to form the first reference pressure chamber in a gas having a first ambient pressure, wherein the first reference pressure chamber encloses the gas under a first reference pressure, and the first reference pressure is achieved in a first position of the first plunger part relative to the first casing, andassembling the second plunger part and the second casing to form the second reference pressure chamber in the gas having a second ambient pressure equal to the first ambient pressure, wherein the second reference pressure chamber encloses the gas under a second reference pressure different from the first reference pressure, and the second reference pressure is achieved in a second position of the second plunger relative to the second casing,wherein the respective pressure control device is configured to feed, on the basis of the first or the second reference pressure, a gas or fluid from a first space to a second space having a pressure lower than that of the first space, and each of the first and second positions corresponds to a predetermined closing position defined in the respective pressure control device such that a passage between the first and the second space is closed by the respective plunger part, whereas the passage is cleared upon a movement of the respective plunger part in a direction away from the closed end of the casing. 2. The method according to claim 1, wherein the first and second plunger parts are substantially identical to each other. 3. The method according to claim 1, wherein the first plunger part differs from the second plunger part. 4. The method according to claim 3, wherein the method further comprises forming the first plunger part in a mold and forming the second plunger part in the same mold. 5. The method according to claim 4, wherein the method further comprises placing at least one form part and/or dimension part in the mold. 6. The method according to claim 3, wherein the first and second plunger parts are identical to each other at one moment in time in the manufacturing process. 7. The method according to claim 3, wherein the at least one recess is situated in a side of the first or second plunger part proximal to the closed end of the first or second casing. 8. The method according to claim 7, wherein the first or second plunger part is composed of at least two parts. 9. The method according to claim 8, wherein the first or second plunger part is composed of at least three parts. 10. The method according to claim 8, wherein at least one of the parts in the first or second plunger part determines at least partly the dimension of the recess. 11. The method according to claim 3, wherein the at least one recess is situated in a side of the first or second plunger part remote from the first or second casing. 12. The method according to claim 3, wherein the first and the second plunger parts are each provided with a provision which, in use, determines the first or second predetermined closing position, wherein a position of this provision and/or a dimension of this provision is different in the first plunger part than in the second plunger part. 13. The method according to claim 12, wherein the first plunger part and the second plunger part are the same except for the position and/or dimension of the provision in each of the first and second plunger parts. 14. The method according to claim 12, wherein the first plunger part and the second plunger part each comprise a stem on which the provision is situated. 15. The method according to claim 12, wherein the provision comprises a closing surface. 16. The method according claim 1, wherein the method further comprises manufacturing a plurality of reference pressure chambers filled with the gas, which are each applicable for use as part of a pressure control device wherein each reference pressure chamber has a reference pressure different from the reference pressure in any other reference pressure chamber. 17. The method according to claim 1, wherein the first and second ambient pressures are equal to the atmospheric pressure.