Information transmitted through radio is recorded in telephone communications using radio. The fluid dispenser includes a housing to which fill-vials can be connected for filling the dispenser reservoir with the fluid, and a stored energy source provided in the form of a substantially constant-force spring that provides the force necessary to continuously and uniformly expel fluid from the device reservoir. The electrochemical detection system functions to detect the presence of a target gas in the fluid that flows through the pump body. This DLC coating retards the deposition of metals, such as those contained in the ion source, on the insulating components. The base further includes a base top surface and an alignment notch.