Pressure transmission module designed to transmit pressures (p), particularly pressures (p) less than or equal to 100 mbar, with - a process isolating diaphragm closing a first pressure chamber towards the outside, wherein said diaphragm can be subjected to a pressure (p) to be transmitted, - a transmission diaphragm closing a second pressure chamber towards the outside, and - a pressure transmission path connecting the first pressure chamber to the second pressure chamber, wherein - the first and the second pressure chamber (5, 13) and the pressure transmission path are filled with a transmission liquid, via which a pressure (p) acting on the process isolating diaphragm from the outside is transmitted to the transmission diaphragm, characterized in that - the transmission liquid is subjected to an initial pressure (p v), particularly an initial pressure (p v) greater than or equal to 30 mbar, particularly greater than or equal to 50 mbar, wherein at said pressure the process isolating diaphragm and the transmission diaphragm are permanently pretensioned owing to the initial pressure (p v) - the process isolating diaphragm and the transmission diaphragm adopt an initial position under the effect of the initial pressure (p v), wherein they are deflected out of said position due to the pressure (p) to be transmitted, and - the initial positions of the process isolating diaphragm and the transmission diaphragm are situated inside a deflection area of the diaphragm that depends on the size of the initial pressure (p v) and the size of the pressures (p) to be transmitted, wherein in said area deflections of the diaphragm from its initial position have a non-axisymmetric part, particularly an anti-symmetric part, due to the design. - a process isolating diaphragm closing a first pressure chamber towards the outside, wherein said diaphragm can be subjected to a pressure (p) to be transmitted, - a transmission diaphragm closing a second pressure chamber towards the outside, and - a pressure transmission path connecting the first pressure chamber to the second pressure chamber, wherein - the first and the second pressure chamber (5, 13) and the pressure transmission path are filled with a transmission liquid, via which a pressure (p) acting on the process isolating diaphragm from the outside is transmitted to the transmission diaphragm, characterized in that - the transmission liquid is subjected to an initial pressure (p v), particularly an initial pressure (p v) greater than or equal to 30 mbar, particularly greater than or equal to 50 mbar, wherein at said pressure the process isolating diaphragm and the transmission diaphragm are permanently pretensioned owing to the initial pressure (p v) - the process isolating diaphragm and the transmission diaphragm adopt an initial position under the effect of the initial pressure (p v), wherein they are deflected out of said position due to the pressure (p) to be transmitted, and - the initial positions of the process isolating diaphragm and the transmission diaphragm are situated inside a deflection area of the diaphragm that depends on the size of the initial pressure (p v) and the size of the pressures (p) to be transmitted, wherein in said area deflections of the diaphragm from its initial position have a non-axisymmetric part, particularly an anti-symmetric part, due to the design.