Patent Number: 
Section: claims

1. A belt for measuring physical quantities of an object, the belt comprising:at least one measurement sensor,a strip having a circumference intended to surround the object,a device for clamping the strip around the object,wherein the belt further comprises a pressing device for pressing the measurement sensor in a first orientation of a first direction directed toward the object,the pressing device comprising at least one casing attached to the strip, at least one intermediate part housed in the casing, and at least one constraining member inserted between the casing and the intermediate part and capable of having the intermediate part assume a first low position in which it presses toward the sensor in the first orientation of the first direction toward the object,the pressing device of the sensor further comprises a lifting member, for holding the intermediate part in a second lifting position above the first low position in a second orientation of the first direction, opposite the first orientation against the constraining member,the lifting member being actuable from the outside of the casing to have the intermediate part pass from the second lifting position to the first low position in which it presses toward the sensor,wherein the lifting member passes through a first guide provided in the intermediate part and abuts against an abutment of the casing in the second lifting position, the lifting member being capable of being removed from the first guide of the intermediate part to have the intermediate part pass from the second lifting position to the first low position in which it presses toward the sensor. 2. The belt according to claim 1, wherein the first guide comprises in the intermediate part a hole for letting through the lifting member in the intermediate part during its passage into the second lifting position. 3. The belt according to claim 1, wherein the lifting member comprises a wire having at least one end section situated outside the casing to allow the lifting member to be removed. 4. The belt according to claim 1, wherein the measurement sensor is a temperature sensor. 5. The belt according to claim 1, comprising a plurality of measurement sensors distributed along the circumference of the strip as a measurement sensor, the plurality of measurement sensors being associated with a plurality of respective pressing devices having a plurality of lifting members. 6. The belt according to claim 5, wherein the lifting members are attached to one another. 7. The belt according to claim 5, wherein the lifting members are formed by the same wire having at least one end section situated outside the casings to allow the lifting members to be removed. 8. The belt according to claim 1, wherein the constraining member comprises a first spring inserted between the casing and the intermediate part. 9. The belt according to claim 1, comprising at least one heat-insulating layer between the intermediate part and the measurement sensor. 10. The belt according to claim 1, wherein the device for clamping the strip around the object comprises:at least one first hooking part attached in proximity to a first end of the strip and at least one second hooking part attached in proximity to a second end of the strip,a first module for connection to the hooking parts, capable of being mounted removably on them,the first module comprising a first spindle for driving the first hooking part in a first joining direction coming closer to the second hooking part and a second spindle for driving the second hooking part in a second joining direction coming closer to the first hooking part, at least one second guide on which the first and second spindles are slidably mounted respectively in the first and second joining directions, and at least one second bias spring mounted between at least one of the spindles and the second guide to cause the spindles to come closer one to another in the first and/or second joining direction,a second approximation module for bringing the spindles closer in the first and second directions, allowing the immobilization of the spindles in a clamping position of the belt around the object. 11. The belt according to claim 10, wherein the second approximation module comprises a gripper for gripping the spindles. 12. The belt according to claim 10, wherein the second approximation module comprises at least one first jaw for gripping the first spindle and at least one second jaw for gripping the second spindle, the first jaw being integral with at least one first arm, the second jaw being integral with at least one second arm, the first arm being hinged with respect to the second arm by a main axis of rotation situated at a distance from the jaws, the second approximation module further comprising at least one screw cooperating with the arms to cause the jaws to come closer one to another by rotation around the main axis. 13. The belt according to claim 12, wherein the approximation module is of the parallelogram or pantograph type between the screw and the jaws. 14. The belt according to claim 12, wherein the second approximation module comprises at least one first connecting rod having a first hinge axis with respect to the first arm between the main axis and the first jaw, at least one second connecting rod having a second hinge axis with respect to the second arm between the main axis and the second jaw, the connecting rods being mutually hinged by a third axis situated at a distance from the first and second axes, the screw cooperating with a first support mounted on the main axis and with a second support mounted on the third axis to allow the jaws to come closer one to another by moving the first and second supports away one from another. 15. A belt for measuring physical quantities of an object, the belt comprising:at least one measurement sensor,a strip having a circumference intended to surround the object,a device for clamping the strip around the object,wherein the belt further comprises a pressing device for pressing the measurement sensor in a first orientation of a first direction directed toward the object,the pressing device comprising at least one casing attached to the strip, at least one intermediate part housed in the casing, and at least one constraining member inserted between the casing and the intermediate part and capable of having the intermediate part assume a first low position in which it presses toward the sensor in the first orientation of the first direction toward the object,the pressing device of the sensor further comprises a lifting member, for holding the intermediate part in a second lifting position above the first low position in a second orientation of the first direction, opposite the first orientation against the constraining member,the lifting member being actuable from the outside of the casing to have the intermediate part pass from the second lifting position to the first low position in which it presses toward the sensor,wherein the lifting members are attached to one another. 16. A belt for measuring physical quantities of an object, the belt comprising:at least one measurement sensor,a strip having a circumference intended to surround the object,a device for clamping the strip around the object,wherein the belt further comprises a pressing device for pressing the measurement sensor in a first orientation of a first direction directed toward the object,the pressing device comprising at least one casing attached to the strip, at least one intermediate part housed in the casing, and at least one constraining member inserted between the casing and the intermediate part and capable of having the intermediate part assume a first low position in which it presses toward the sensor in the first orientation of the first direction toward the object,the pressing device of the sensor further comprises a lifting member, for holding the intermediate part in a second lifting position above the first low position in a second orientation of the first direction, opposite the first orientation against the constraining member,the lifting member being actuable from the outside of the casing to have the intermediate part pass from the second lifting position to the first low position in which it presses toward the sensor, andwherein the device for clamping the strip around the object comprises:at least one first hooking part attached in proximity to a first end of the strip and at least one second hooking part attached in proximity to a second end of the strip,a first module for connection to the hooking parts, capable of being mounted removably on them,the first module comprising a first spindle for driving the first hooking part in a first joining direction coming closer to the second hooking part and a second spindle for driving the second hooking part in a second joining direction coming closer to the first hooking part, at least one second guide on which the first and second spindles are slidably mounted respectively in the first and second joining directions, and at least one second bias spring mounted between at least one of the spindles and the second guide to cause the spindles to come closer one to another in the first and/or second joining direction,a second approximation module for bringing the spindles closer in the first and second directions, allowing the immobilization of the spindles in a clamping position of the belt around the object. 17. The belt according to claim 16, wherein the second approximation module comprises a gripper for gripping the spindles. 18. The belt according to claim 16, wherein the second approximation module comprises at least one first jaw for gripping the first spindle and at least one second jaw for gripping the second spindle, the first jaw being integral with at least one first arm, the second jaw being integral with at least one second arm, the first arm being hinged with respect to the second arm by a main axis of rotation situated at a distance from the jaws, the second approximation module further comprising at least one screw cooperating with the arms to cause the jaws to come closer one to another by rotation around the main axis. 19. The belt according to claim 18, wherein the approximation module is of the parallelogram or pantograph type between the screw and the jaws. 20. The belt according to claim 18, wherein the second approximation module comprises at least one first connecting rod having a first hinge axis with respect to the first arm between the main axis and the first jaw, at least one second connecting rod having a second hinge axis with respect to the second arm between the main axis and the second jaw, the connecting rods being mutually hinged by a third axis situated at a distance from the first and second axes, the screw cooperating with a first support mounted on the main axis and with a second support mounted on the third axis to allow the jaws to come closer one to another by moving the first and second supports away one from another.