MICROCARB

ELECTRICAL SYSTEMS OR APPARATUS FOR DETERMINING AND/OR CONTROLLING THE CONSTITUENT POTENTIAL OF GASES AND PARTICULARLY TO ELECTRICAL APPARATUS FOR CONTROLLING THE ATMOSPHERE OF FURNACES SUCH AS USED IN THE CARBURIZING OR NITRIDING OF METAL BY VARYING THE SUPPLY OF ONE OR MORE CONSTITUENTS OF THAT ATMOSPHERE OR FOR MEASURING THE CARBURIZING OR NITRIDING POTENTIAL OF THAT ATMOSPHERE