Working Principle of SRY2 Ordinary Tubular Electric Heater Price
Working voltage allowable error: not greater than 1.1 times its rated value, and the shell should be effectively grounded.
Working environment: relative humidity not greater than 95%, no explosive and corrosive gases.
In the outline dimension drawing, "B" must be fully immersed in oil (and checked regularly) to avoid burning out. The heated oil should be non-corrosive. When melting solid oils such as asphalt and paraffin, the voltage should be reduced, and then raised to the rated voltage after melting. This prevents heat concentration from reducing the service life of the element. The outlet end must be kept dry and clean to avoid surface flashing or short circuit. The element should be stored in a dry place. If the insulation resistance drops below 1MΩ due to long-term storage, it can be dried in an oven at about 200℃ for several hours (or powered at low voltage for several hours) to restore insulation resistance.
SRY2-3 tubular electric heater is based on the SRY2 ordinary tubular electric heater, improving its wiring device and heating structure. It uses three heating tubes as a group, effectively reducing the surface load of the heater, and can directly replace SRY2-SRY4 type heaters. This electric heater is composed of bent tubular elements welded on a flange. Because the heater is directly placed in oil for heating, it has high thermal efficiency and long service life.
Technical Parameters:
1. Specifications and outline dimensions: see Table 2
Model | Voltage (V) | Power (kW) | Outline and installation dimensions (mm) | ||
A | B immersed length in oil | C | |||
SRY2-220/1 | 220 | 1 | 307 | 230 | - |
SRY2-220/2 | 220 | 2 | 507 | 430 | - |
SRY2-220/3 | 220 | 3 | 707 | 630 | - |
SRY2-220/4 | 220 | 4 | 922 | 845 | - |
2. Working voltage allowable error: not greater than 1.1 times its rated value. The shell should be effectively grounded.
3. Working environment for ordinary tubular electric heating elements: relative humidity not greater than 95%, no explosive, flammable, and corrosive gases.
4. Metal tube material: No. 10 steel.
5. Maximum working temperature: 300℃.
6. Working pressure less than 2 kg/cm²
Instructions for SRY2 Ordinary Tubular Electric Heater Price
1. Working voltage must not exceed 1.1 times its rated value, and the shell should be effectively grounded.
2. Dimension "B" in the figure must be fully immersed in oil (and checked regularly) to avoid burning out. The heated oil should be free of corrosive gases.
3. The mounting hole size of this electric heater is φ65mm.
4. Tubular electric heating elements are designed according to JB2379-78 flowing oil standard, with a surface load of 2-3.8 W/cm².
5. When selecting, the heater size should be determined according to the actual dimensions of the heating medium.
