OPTICAL PYROMETER; MINIMUM TEMPERATURE VALUE: 600 C; MAXIMUM TEMPERATURE VALUE: 1600 C; OUTPUT SIGNAL: 4 - 20 MA; COOLED: WITHOUT HOUSING; TYPE OF PROTECTION: WITHOUT HOUSING; ELECTRICAL VOLTAGE: 24 VDC; HOUSING MATERIAL: ALUMINUM; ADJUSTABLE EMISSIVITY ON THE PYROMETER ITSELF. REQUIRES AN EXTERNAL 24 VDC POWER SUPPLY - PYROMETER WITHOUT HOUSING; MODEL: U1 600/1600 CVZK 161