A pipeline inspection system, comprising: at least one sensor module having a module body extending from a first module end to a second module end, and a plurality of sensor holders mounted to the module body, each sensor holder comprising, a holder body with a first body end, a second body end, and a plurality of sensors positioned therebetween, the plurality of sensors being configured to sense a parameter of a wall of a pipeline having a longitudinal axis extending therethrough; and a plurality of rotational guides coupled to the holder body and configured to be biased towards an interior surface of the pipeline wall so as to define a standoff distance between each sensor and the interior surface of the pipeline wall, wherein each sensor holder is at least partially pivotable about a longitudinal axis of the holder body extending between the first body end and the second body end; wherein at least one sensor holder of the plurality of sensor holders includes at least one protection member that is configured to prevent damage to the plurality of sensors as the at least one sensor module translates through the pipeline, characterized by the protection member including a tubular shaped deflector roll positioned between two rotational guides (118a, 118b) with the same axle that extends through the two rotational guides (118a, 118b) also extending through the deflector roll so that the deflector roll is configured to rotate about the axle if the deflector roll comes into contact with an obstacle in a pipeline. at least one sensor module having a module body extending from a first module end to a second module end, and a plurality of sensor holders mounted to the module body, each sensor holder comprising, a holder body with a first body end, a second body end, and a plurality of sensors positioned therebetween, the plurality of sensors being configured to sense a parameter of a wall of a pipeline having a longitudinal axis extending therethrough; and a plurality of rotational guides coupled to the holder body and configured to be biased towards an interior surface of the pipeline wall so as to define a standoff distance between each sensor and the interior surface of the pipeline wall, wherein each sensor holder is at least partially pivotable about a longitudinal axis of the holder body extending between the first body end and the second body end; a holder body with a first body end, a second body end, and a plurality of sensors positioned therebetween, the plurality of sensors being configured to sense a parameter of a wall of a pipeline having a longitudinal axis extending therethrough; and a plurality of rotational guides coupled to the holder body and configured to be biased towards an interior surface of the pipeline wall so as to define a standoff distance between each sensor and the interior surface of the pipeline wall, wherein each sensor holder is at least partially pivotable about a longitudinal axis of the holder body extending between the first body end and the second body end; wherein at least one sensor holder of the plurality of sensor holders includes at least one protection member that is configured to prevent damage to the plurality of sensors as the at least one sensor module translates through the pipeline, characterized by the protection member including a tubular shaped deflector roll positioned between two rotational guides (118a, 118b) with the same axle that extends through the two rotational guides (118a, 118b) also extending through the deflector roll so that the deflector roll is configured to rotate about the axle if the deflector roll comes into contact with an obstacle in a pipeline.