One. Instructions for use, use. Technical parameters 
 1. Tubular heating elements, is only applicable to open type, closed circulatory system within the tank and hot water use. 
 2. The effective length of the heating element must be completely immersed in the liquid used, the device shall not be heated gases into solids. 
 3. Liquid is heated on the components that should not contain corrosive substances in the course of the surface of the tube should be kept clear scale or coke, otherwise it will affect the efficiency and component life. 
 4. Shall not exceed the rated working voltage of 1.1 times the ambient temperature is not greater than 95%; case should be effectively grounded. 
 5. Heating element should be stored in a dry place, if its long-term placement to reduce the insulation resistance at 1MΩ, it would be about 200 ° C drying oven for several hours to recover. 
 6. The voltage. Power by the company's technical staff to develop with customers. 

 Pressure values 
 Durable pressure insulation value 
 Insulation value diameter error 
 Pipe diameter deviation tube length error 
 Pipe length error elbow deviation 
 Bend deviation error resistance 
 Resistance error 
 1.5KV above / 5S cold 
 Cool hot 
 Heat ± 0.5mm ± 2mm ± 2mm ± 5% 
 500mΩ more than 20mΩ 
 Manufacturing Range # 6.6X16mm