- Air electric heaters belong to the category of "electric heating equipment", and safety protection and additional functions directly affect their service life and operational convenience. When selecting, special attention should be paid to:
1. Safety protection device
Required configurations: overheat protection (such as temperature controller+thermal fuse) (automatically shuts off when the temperature exceeds the set value to prevent dry burning), overload protection (circuit breaker) (to avoid burning components due to excessive current);
Special scenario supplement: Explosion proof scenarios require "explosion-proof temperature controller+explosion-proof junction box"; In humid environments, "leakage protection (RCD)" is required.
2. Temperature control accuracy
If high temperature stability is required (such as laboratory, precision drying), a "digital temperature controller" (temperature control accuracy ± 1 ℃) should be selected instead of a regular mechanical temperature controller (accuracy ± 5 ℃);
It is recommended to have a "PID regulation function" that can automatically adapt to load changes and avoid excessive temperature fluctuations.
3. Energy consumption and efficiency
Prioritize selecting heating tubes with "low surface heat load" (surface heat load ≤ 5W/cm ²) to reduce scaling/oxidation on the tube surface and extend its lifespan;
Models with "insulation layers" (such as rock wool and aluminum silicate) can reduce shell heat dissipation losses and improve heating efficiency (energy savings of 5% -10%).
4. Maintain convenience
Is the heating tube easy to disassemble (such as flange installation, which is convenient for later replacement);
Is it equipped with a "dust-proof net" (to avoid dust blocking the air duct, it needs to be cleaned regularly, choose a design that is easy to clean).
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Post time: Sep-24-2025
