A sensor system for use in a high voltage direct current network, the sensor system comprising: a plurality of sensor devices, each sensor device configured to obtain a respective sensor measurement (S 1 , S 2 , S n ), wherein the plurality of sensor devices are configured to generate a serial data unit for transmission to a recipient system (C), the serial data unit including the plurality of sensor measurements (S 1 , S 2 , S n ), the serial data unit further including a plurality of validity indicators (FCS 1 , FCS 2 , FCS n ), each validity indicator (FCS 1 , FCS 2 , FCS n ) providing an individual validity status of a respective one of the plurality of sensor measurements (S 1 , S 2 , S n ); characterised in that the sensor system comprises a sensor management unit configured: to evaluate each validity indicator (FCS 1 , FCS 2 , FCS n ) to determine whether the corresponding sensor measurement (S 1 , S 2 , S n ) is either valid or invalid; to generate a modified serial data unit based on the serial data unit subsequent to the sensor management unit evaluating each validity indicator (FCS 1 , FCS 2 , FCS n ) in response to determining that at least one of the plurality of sensor measurements (S 1 , S 2 , S n ) is invalid, wherein the modified serial data unit includes at least one valid sensor measurement (S 1 , S 2 , S n ) from the serial data unit; and to transmit the modified serial data unit to the recipient system (C); and in that the sensor management unit is configured to transmit the serial data unit to the recipient system (C) in response to the sensor management unit determining that none of the plurality of sensor measurements (S 1 , S 2 , S n ) are invalid. a plurality of sensor devices, each sensor device configured to obtain a respective sensor measurement (S 1 , S 2 , S n ), wherein the plurality of sensor devices are configured to generate a serial data unit for transmission to a recipient system (C), the serial data unit including the plurality of sensor measurements (S 1 , S 2 , S n ), the serial data unit further including a plurality of validity indicators (FCS 1 , FCS 2 , FCS n ), each validity indicator (FCS 1 , FCS 2 , FCS n ) providing an individual validity status of a respective one of the plurality of sensor measurements (S 1 , S 2 , S n ); characterised in that the sensor system comprises a sensor management unit configured: to evaluate each validity indicator (FCS 1 , FCS 2 , FCS n ) to determine whether the corresponding sensor measurement (S 1 , S 2 , S n ) is either valid or invalid; to generate a modified serial data unit based on the serial data unit subsequent to the sensor management unit evaluating each validity indicator (FCS 1 , FCS 2 , FCS n ) in response to determining that at least one of the plurality of sensor measurements (S 1 , S 2 , S n ) is invalid, wherein the modified serial data unit includes at least one valid sensor measurement (S 1 , S 2 , S n ) from the serial data unit; and to transmit the modified serial data unit to the recipient system (C); to evaluate each validity indicator (FCS 1 , FCS 2 , FCS n ) to determine whether the corresponding sensor measurement (S 1 , S 2 , S n ) is either valid or invalid; to generate a modified serial data unit based on the serial data unit subsequent to the sensor management unit evaluating each validity indicator (FCS 1 , FCS 2 , FCS n ) in response to determining that at least one of the plurality of sensor measurements (S 1 , S 2 , S n ) is invalid, wherein the modified serial data unit includes at least one valid sensor measurement (S 1 , S 2 , S n ) from the serial data unit; and to transmit the modified serial data unit to the recipient system (C); and in that the sensor management unit is configured to transmit the serial data unit to the recipient system (C) in response to the sensor management unit determining that none of the plurality of sensor measurements (S 1 , S 2 , S n ) are invalid. <EOS>