1) Respiration recorder 
A pneumograph, also known as a pneumatograph or spirograph, is a device for recording velocity and force of chest movements during respiration. ==Principle of operation== There are various kinds of pneumographic devices, which have different principles of operation. In one mechanism, a flexible rubber vessel is attached to the chest. The vessel is...
instrument for measuring and recording respiration
• (n.) Same as Pneumatograph.
Pneu'mo·graph noun Same as Pneumatograph . 
Type: Term Pronunciation: nū′mō-graf Definitions: 1. Generic term for any device that records respiratory excursions from movements on the body surface; an impedance pneumograph, which applies the principles of impedance plethysmography to the chest.
pneumograph Generic term for any device that records respiratory (breathing) excursions from movements on the body surface; e.g., an impedance pneumograph, which applies the principles of impedance plethysmography (measuring and recording changes in volume) to the chest.