The Cl2 gas sensor using 0.97BaCl2-0.03KCl solid electrolyte and an Ag
metal reference electrode was prepared by a melting method. The melti
ng method has the advantage of ease for the sensor preparation. The se
nsor probe obtained has a high mechanical strength. The measured EMF a
greed with the calculated one for Cl2 gas concentrations from 50 ppm t
o 10000 ppm.