SRY2 Tubular Electric Heater 220V
Application:
SRY2 and SRY3 tubular electric heaters are used for heating oil in open or closed oil tanks. SRY4 tubular electric heater is used for heating flowing or circulating oil.
Tubular Electric Heater / Electric Heating Tube Technical Data
1. Specifications and dimensions: see table and figure
2. Working voltage tolerance: not greater than 1.1 times its rated value, the shell must 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, SRY3 300°C, SRY4 100°C
6. Working pressure of SRY2 and SRY4 less than 2 kg/cm².
7. Fastener length of SRY3 is 25 mm.
Tubular Electric Heater / Electric Heating Tube 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 must be below the fastener and above dimension line "B".
3. When melting solid oils such as asphalt and paraffin, reduce voltage first, then increase to rated voltage after melting to prevent concentrated power from reducing element life.
4. If carbon deposits are found on the tube surface, remove them before reuse to avoid reduced efficiency or even burning of the element.
5. Store elements in a dry place. If insulation resistance drops below 1 MΩ due to long-term storage, dry in an oven at about 200°C for several hours (or apply low voltage for several hours) to restore insulation resistance.
Tubular Electric Heater / Electric Heating Tube Technical Parameters
Voltage: 380V (star connection) or 220V (connect three terminals on each side)
Power: 1KW-10KW (other non-standard powers can be ordered, delivery 1-2 days, self-produced)
Specific dimensions of heating tube:
1. Flange outer diameter: 115mm
2. Thickness: 8-10mm
3. Mounting holes: 6 holes, 9mm diameter, center distance 94mm
4. Heating tube length: 1KW: 230mm below flange
2KW: 400mm below flange
3KW: 500mm below flange
4KW: 600mm below flange
5KW: 620mm below flange
6KW: 630mm below flange
7KW: 700mm below flange
8KW: 800mm below flange
9KW: 850mm below flange
10KW: 900mm below flange
Product Materials:
Outer tube materials: In800, In840, 304, 316L, 310S, aluminum, copper, low carbon steel, etc.
Magnesium oxide powder is selected according to different usage requirements, including high-temperature powder, medium-temperature powder, etc.
Resistance wire is the heating element, generally two materials: Ni-Cr wire and Fe-Cr-Al.
Lead terminal materials generally two types: stainless steel and easy-to-cut steel.
SRY2 Tubular Electric Heater 220V
Product Structure:
It is made by inserting electric heating wire into an outer tube (carbon steel tube, titanium tube, stainless steel tube, copper tube), filling the gaps with magnesium oxide powder that has good thermal conductivity and insulation, then shrinking the tube. After heat treatment (some tubes do not require it), it is processed into various shapes required by users. SRY4 tubular electric heater 220V/380V has simple structure, high thermal efficiency, good mechanical strength, and good adaptability to harsh environments. It can be used for heating various liquids and acid-base salts, and is also suitable for melting low melting point metals.
Scope of application: Suitable for heating air, oil, water, chemical media, hot pressing molds, melting salts, alkalis, and low melting point alloys - with high thermal efficiency, long service life, high mechanical strength, easy installation, safe and reliable.
Shape classification: According to shape, heating tubes can be divided into: straight single-end heating tube, straight double-end heating tube, U-shaped heating tube, W-shaped heating tube, special-shaped heating tube, spiral heating tube.
Technical Features:
1. Can heat the medium to very high temperatures, up to 850°C, with shell temperature only about 50°C;
2. High efficiency: up to 0.9 or more;
3. Fast heating and cooling rates, up to 10°C/s, with fast and stable adjustment. No temperature overshoot or lag of the controlled medium, suitable for automatic control;
4. Good mechanical performance: because the heating element is made of special alloy material, under high-pressure air flow impact, it has better mechanical performance and strength than any other heating element, which is especially advantageous for systems and accessory tests requiring continuous air heating for long periods;
5. If used properly, the service life can reach decades, making it durable;
6. Clean air, small size;
