Tubular Electric Heater Technical Data - Yangzhou Darui
Darui Electric recommends
Tubular electric heaters are composed of metal tubes, spiral resistance wires, and electrical-grade magnesium oxide powder with good thermal conductivity and insulation, along with terminals, etc. They are widely used for heating liquids, air, etc. Common examples include water heaters, ovens, coffee pots, etc.
SRY type tubular electric heaters are used for heating flowing or circulating oil.
Applications:
SRY2 and SRY3 type tubular electric heaters are used for heating oil in open or closed oil tanks. SRY4 type tubular electric heaters are used for heating flowing or circulating oil.
Technical Data:
1. Specifications and dimensions:
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: 10# steel
5. Maximum working temperature: SRY2 and SRY3 are 300°C, SRY4 is 100°C
6. Working pressure of SRY2 and SRY4 types is less than 2 kg/cm².
7. Fastener length of SRY3 type is 25 mm.
Precautions:
1. 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 type must be below the fastener and above the dimension line "B".
3. When melting solid oils such as asphalt and paraffin, reduce the voltage until melted, then increase to rated voltage to prevent concentrated power from reducing element life.
4. If carbon deposits are found on the tube surface, remove them thoroughly before reuse to avoid reduced efficiency or even burning of the element.
5. The element should be stored in a dry place. If insulation resistance drops below 1 megohm due to long-term storage, dry it in an oven at about 200°C for several hours (or pass low voltage through the element for several hours) to restore insulation resistance.
Tubular Electric Heater Technical Parameters
Voltage: 220V
Power: 1KW-8KW
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
