A differential pressure sensor comprising: a differential pressure sensor package comprising a first hose coupling nozzle and a second hose coupling nozzle, wherein the differential pressure sensor comprises an adaptor device comprising: a base body, the base body comprising a first reception for receiving the first hose coupling nozzle and a second reception for receiving the second hose coupling nozzle, wherein the first and second receptions (2,3) are spaced apart from one another by a first distance (d); a first connecting nipple for receiving a first hose, the first connecting nipple having a first muzzle opening and being attached to the base body and connected to the first reception by a first passage; and a second connecting nipple for receiving a second hose, the second connecting nipple having a second muzzle opening and being attached to the base body and connected to the second reception by a second passage, wherein the first and second muzzle openings (47,57) are spaced apart at a second distance, wherein the second distance is longer than the first distance (d); wherein the adaptor device is configured to be connected to the differential pressure sensor package, and wherein the adaptor device is further configured to receive, upon connection with the differential pressure sensor package, the first and second hose coupling nozzles (81,82) in the first and second receptions (2,3), respectively. a differential pressure sensor package comprising a first hose coupling nozzle and a second hose coupling nozzle, wherein the differential pressure sensor comprises an adaptor device comprising: a base body, the base body comprising a first reception for receiving the first hose coupling nozzle and a second reception for receiving the second hose coupling nozzle, wherein the first and second receptions (2,3) are spaced apart from one another by a first distance (d); a first connecting nipple for receiving a first hose, the first connecting nipple having a first muzzle opening and being attached to the base body and connected to the first reception by a first passage; and a second connecting nipple for receiving a second hose, the second connecting nipple having a second muzzle opening and being attached to the base body and connected to the second reception by a second passage, wherein the first and second muzzle openings (47,57) are spaced apart at a second distance, wherein the second distance is longer than the first distance (d); wherein the adaptor device is configured to be connected to the differential pressure sensor package, and wherein the adaptor device is further configured to receive, upon connection with the differential pressure sensor package, the first and second hose coupling nozzles (81,82) in the first and second receptions (2,3), respectively. a base body, the base body comprising a first reception for receiving the first hose coupling nozzle and a second reception for receiving the second hose coupling nozzle, wherein the first and second receptions (2,3) are spaced apart from one another by a first distance (d); a first connecting nipple for receiving a first hose, the first connecting nipple having a first muzzle opening and being attached to the base body and connected to the first reception by a first passage; and a second connecting nipple for receiving a second hose, the second connecting nipple having a second muzzle opening and being attached to the base body and connected to the second reception by a second passage, wherein the first and second muzzle openings (47,57) are spaced apart at a second distance, wherein the second distance is longer than the first distance (d); wherein the adaptor device is configured to be connected to the differential pressure sensor package, and wherein the adaptor device is further configured to receive, upon connection with the differential pressure sensor package, the first and second hose coupling nozzles (81,82) in the first and second receptions (2,3), respectively.