Product Details

SRY2, SRY3 Tubular Electric Heater



SRY2, SRY3 Tubular Electric Heater is used for heating oil in open or closed oil tanks. SRY4 Tubular Electric Heater is used for heating flowing or circulating oil.



II. Specifications and Technical Data



1. Specifications and dimensions: see table and figure





Note: The mounting hole for SRY2 and SRY4 is ?72 mm.



2. Working voltage tolerance: not greater than 1.1 times the rated value, the shell should be effectively grounded.



3. Working environment: relative humidity not greater than 95%, no explosive or corrosive gases.



4. Metal tube material: No. 10 steel.



5. Maximum working temperature: SRY2, SRY3 are 300°C, SRY4 is 100°C.



6. Working pressure of SRY2 and SRY4 is less than 2 kg/cm².



7. Fastener length of SRY3 is 25 mm.



HRY, SRY Tubular Electric Heater Maintenance and Precautions



1. The dimension "B" in the outline drawing must be fully immersed in oil to avoid burning the element. The heated oil should be non-corrosive.



2. The working liquid level of SRY3 must be below the fastener and above the dimension line "B".



3. When melting solid oils such as asphalt and paraffin, reduce the voltage, and then raise to rated voltage after melting, to prevent heat concentration and reduce the service life of the element.



4. If carbon deposits are found on the tube surface, they must be removed before use to avoid reducing efficiency or even burning out the element.



5. The element should be stored in a dry place. If the insulation resistance drops below 1 megohm due to long-term storage, it can be dried in an oven at about 200°C for several hours (or powered at low voltage for several hours) to restore insulation resistance.