Heater: resistance nickel multistranded Support: rubber, silicone armed glass fiber with metal strip iron rolled-iron product Control: adjustable thermostat drowned under silicone avoiding any risk of overheating Fixing by system with spring ensuring a good adhesion and allowing the adaptation on not standardized barrels Power 230 V single-phase current Precautions for use: - Place the collar low possible by taking care that this one marries the shapes of the barrel as well as possible - Check that the level of the liquid is higher than the site of the collar In the case of variations of level in your process, plan controllers of level - Check that the acceptable maximum temperature by the liquid cannot be exceeded or insert a thermostat - not to cover the barrel at the time it heating in order to to avoid an increase in the pressure or insert a pressure controller