Product Details

High Efficiency SRY Immersion Tubular Electric Heater

Darui Electric recommends for you
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 as needed by the user. It has simple structure, high thermal efficiency, good mechanical strength, and good adaptability to harsh environments. It can be used for heating various liquids and acids, alkalis, and salts, and is also suitable for melting low melting point metals.
Scope of use: Suitable for heating air, oil, water, chemical media, hot pressing molds, melting salts, alkalis, and low melting point alloys. It features high thermal efficiency, long service life, high mechanical strength, easy installation, safety, and reliability.

High Efficiency SRY Immersion Tubular Electric Heater

1. Specifications and dimensions: see table and Figure 2

Note: The mounting hole for SRY2 and SRY4 models is Ø72 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: 10# steel.
5. Maximum working temperature: SRY2, SRY3 is 300°C, SRY4 is 100°C.
6. Working pressure for SRY2 and SRY4 models is less than 2 kg/cm².
7. Fastener length for SRY3 model is 25 mm.

Usage, maintenance and precautions:
1. Dimension "B" in the outline drawing must be fully immersed in oil to avoid damaging the element. The heated oil should be non-corrosive.
2. The working liquid level for SRY3 model must be below the fastener and above the dimension line "B".
3. When melting solid oils such as asphalt and paraffin, reduce the voltage for use, then increase to rated voltage after melting to prevent heat concentration and reduce element service life.
4. If carbon deposits are found on the tube surface, they must be removed before reuse 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.

Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.