Abstract: Infusion apparatus is provided for discriminating the specifications of syringes of any manufacturer, setting alarm levels corresponding to contained liquid solutions having various viscosities, and obtaining a net pressure for infusion from the force to a plunger by considering pressure loss dependent on a friction factor between the barrel and the plunger of the syringe. Syringe diameter is detected digitally to determine a capacity signal. The plunger force is detected by a pressure sensor and then A/D converted to a digital pressure signal. Specifications of syringes of manufacturers based on the syringe capacity signal are compared with the signals of the mounted syringe to select one among operation programs corresponding to their syringe specifications. A Dip switch selects a group of the operation programs for manufacturers.

Abstract: An incubator comprises an incubating chamber for accommodating an infant, and air supply means for supplying conditioned air into the incubating chamber. The air supply means comprises a dry passage and a wet passage which are partitioned from each other by a partition wall. The dry passage and the wet passage communicate by means of a first opening and a second opening, respectively, with the incubating chamber. The wet passage communicates by means of a connecting passage having an opening formed in a wall of the dry passage extending along the direction of air flow through the dry passage with the dry passage. A water tank containing water for humidifying air is provided in the connecting passage. A restricting means is provided at least for the first opening to regulate the flow rate of air that flows through the first opening.