Abstract: A mounting assembly for an ultrasonic flow sensor or other object includes a bracket which is mounted to the sides of the sensor and which has flexible legs extending away from the sensor. A strap formed of chain and one or more extension springs is connected at its ends to the bracket on opposite sides of the sensor. The strap encircles the pipe or other conduit on which the sensor is to be mounted. The flexible legs mount pads on their ends which contact and conform with the outer surface of the conduit. The length of the strap can be adjusted by one or more turnbuckle arrangements.