TECHNICAL CHARACTERISTICS OF ARMORED HEATERS FOR IMMERSION INTO LIQUIDS

Insulation composed of compressed mineral oxide.
Winding resistor constructed with filament made from Nickel-Chromium alloy 80/20 immersed in mineral oxide.
Metal tubular cover constructed in iron, stainless steel or copper, seal welded to threaded plugs in brass, stainless steel or on flanges. Terminal board in a sealed box with various grades of protection.