A filling apparatus (100, 200, 400) for filling fluid into a gas bottle, comprising: - a holding arrangement connectable to a main support, wherein the holding arrangement comprises a connector configured to hold the gas bottle so that the gas bottle is able to hang from the holding arrangement, - a load sensor configured to measure the load of the gas bottle when the gas bottle hangs from the holding arrangement, where the load sensor is in connection with the holding arrangement and located between the main support and the connector, - a control system configured to control supply of the fluid via an associated fluid supply to the gas bottle in dependence of the measured load, - where the fluid supply comprises a first fluid conduct and a second fluid conduct, - where the load sensor comprises a load receiving part and a load transmitting part, where the load receiving part and the load transmitting part are located between the main support and the connector, characterized in that - the load receiving part is in connection with the connector, directly or via a first part of the holding arrangement, in order to receive the load of the hanging gas bottle, and the load transmitting part is in connection with the main support, directly or via a second part of the holding arrangement, in order to transmit the load of the hanging gas bottle to the main support, - one end of the second fluid conduct is fixedly connected to the load receiving part of the load sensor and fluidly connected with the first fluid conduct, so that fluid can be transported from the second fluid conduct to the first fluid conduct, and - the other end of the second fluid conduct is fixedly connected to the load transmitting part of the load sensor, and - the second conduct is provided with a 180 degrees turn between the load transmitting part and the load receiving part of the load sensor so that any change of flexibility of this fluid conduct between the load transmitting part and the load receiving part of the load sensor, such as due to pressure changes in the conduct, is independent or substantially independent from influence of the second fluid conduct. - a holding arrangement connectable to a main support, wherein the holding arrangement comprises a connector configured to hold the gas bottle so that the gas bottle is able to hang from the holding arrangement, - a load sensor configured to measure the load of the gas bottle when the gas bottle hangs from the holding arrangement, where the load sensor is in connection with the holding arrangement and located between the main support and the connector, - a control system configured to control supply of the fluid via an associated fluid supply to the gas bottle in dependence of the measured load, - where the fluid supply comprises a first fluid conduct and a second fluid conduct, - where the load sensor comprises a load receiving part and a load transmitting part, where the load receiving part and the load transmitting part are located between the main support and the connector, - the load receiving part is in connection with the connector, directly or via a first part of the holding arrangement, in order to receive the load of the hanging gas bottle, and the load transmitting part is in connection with the main support, directly or via a second part of the holding arrangement, in order to transmit the load of the hanging gas bottle to the main support, - one end of the second fluid conduct is fixedly connected to the load receiving part of the load sensor and fluidly connected with the first fluid conduct, so that fluid can be transported from the second fluid conduct to the first fluid conduct, and - the other end of the second fluid conduct is fixedly connected to the load transmitting part of the load sensor, and - the second conduct is provided with a 180 degrees turn between the load transmitting part and the load receiving part of the load sensor so that any change of flexibility of this fluid conduct between the load transmitting part and the load receiving part of the load sensor, such as due to pressure changes in the conduct, is independent or substantially independent from influence of the second fluid conduct.