A downhole device for use in a wellbore that has sensors for monitoring flow rates and fluid properties of fluid flowing in the wellbore. The sensors are disposed adjacent one another so that the properties of the fluid monitored by the sensors are substantially the same. The sensor for monitoring flow rate is a flow meter optionally equipped with rotatable members that are affixed to a rotatable base member. The members are positioned in a path of the flowing fluid which rotates the members and base member; the fluid flow rate is estimated based on a measured rotational rate of the base member. Properties estimated by the fluid property sensor include viscosity and density. The fluid property sensor can include a resonating member disposed in the fluid flow path, by measuring the damping of the fluid across the resonating member, the fluid density and viscosity can be estimated.