Air conveyor for gas-sampling tubes

摘要: An air conveyor for a gas-sampling tube that is used detecting foreign gases or suspended substances in described. The comprises body, serving as handle, has control rod which guided and lockable through-duct therein, connected at one end to bellows serves suction element. beginning the of stroke uniquely determined by locking releasing mechanism thereby ensuring an exactly reproducible volume. utilizes two lever-like linkages, each provided with hook, are pivotally disposed body under other parallel rod. free least recess operative connection hook on first lever secure position second stroke.