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09:14 Dec 2, 2004
English to Polish translations [PRO] Tech/Engineering - Metallurgy / Casting / galwanizacja
English term or phrase:a low select
RTH Zones 1-4
Temperature control of zones 1-4 is governed by strip temperature measured by a pyrometer at the end of the radiant tube section. Firing rate of 0-100% are through cross connected regulators in each zone. Air leads gas on increase in firing rate and lags on decrease. There is a T/C for each zone temperature and a low select between each T/C and the pyrometer to limit individual chamber temperature to 900 deg C. Zone overtemp T/C on each zone shuts off gas solenoid at 950 deg C and gives alarm