Production logging tool and downhole fluid analysis sensors vertical deploying method

A production logging tool comprising an elongated cylindrical body of longitudinal axis, the body carrying an articulated dual arms deploying arrangement, at least one arm carrying at least one sensor to analyze at least one property of a multiphase fluid mixture flowing in a hydrocarbon well, said sensor extending along a sensor axis, the articulated dual arms deploying arrangement comprising two deploying arms and a sliding sleeve, the deploying arms being operable from a retracted configuration into a vertically extended configuration, the deploying arms being coupled together through an outermost end hinge at outermost ends of said deploying arms, one arm being coupled to a first end part of the body through a first hinge at another deploying arm end, and the other arm being coupled to a second end part of the body through a sliding sleeve hinge at the sliding sleeve at another deploying arm end, wherein the articulated dual arms deploying arrangement further comprises a pantographic mechanism arranged such that the sensor axis stays substantially parallel to the longitudinal axis for any opening of the deploying arms from the retracted configuration to the vertically extended configuration, wherein at least one deploying arm comprises a pantograph upper arm rod and a pantograph lower arm rod, the pantograph upper arm rod being coupled to the body by a first hinge, the pantograph lower arm rod being coupled to the body by a second hinge, the pantograph upper and lower arm rods extending parallelly to each other, at least two sensor carrying rods being disposed and coupled along said pantograph upper and lower arm rods, and wherein said at least one sensor is secured to a corresponding sensor carrying rod in a fixed manner such that a corresponding sensor axis is perpendicular to a sensor carrying rod axis, the sensor carrying rod being perpendicular to the tool body axis and the sensor axis staying parallel to the tool body axis for any opening of the deploying arms from the retracted configuration to the vertically extended configuration.