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Coil and Cable Heaters with Thermocouple J
1. Coil Heater Brief Introduction
Hot runner heater is an advance concept of thermal engineering which has a construction similar to high watt density cartridge heaters.
These heaters are also known as high performance tubular heaters or cable heaters. The basic construction of these heaters consist of compacted MgO, high temperature resistance wire and Chrome Nickel Steel tube.
These heaters can be constructed with or without built in thermocouples. They are usually installed where space available for heating is limited and are widely used on hot runner nozzles, and manifolds, die cast nozzles, packaging machines etc.
2. Coil Heater Characteristics
3. Coil Heater Parameter.
Spring coil heater (H series) | 3.0x3.0 | Φ3.0 | Φ4.0 | Φ5.0 | 3.5x3.5 | 5.0x5.0 |
Voltage | 220V,230V,240V | |||||
Power tolerance 115W-200W | +/-10% | |||||
Power tolerance 201W-2000W | +5%-10% | |||||
Out jacket length | 30mm~280mm | |||||
Diameter of the inner sleeve/wrapped diameter | 10mm~42mm | |||||
Unheating length | 45mm | |||||
Max power density | 9W/cm² | |||||
Heating Length tolerance | +/-0.05mm | |||||
Unheating length tolerance | +/-2.5% | |||||
Tolerance ID d ≤20mm | Without inner sleeve:-0.15mm | |||||
Tolerance ID d 20mm~30mm | Without inner sleeve:-0.20mm | |||||
Tolerance ID d ≥30mm | Without inner sleeve:-0.25mm | |||||
Tolerance cross section | +/-0.15mm | +/-0.20mm | ||||
Thermocouple | K,J,E | None | ||||
Material | 304,321,316 | |||||
Maximum working temperature | 650℃ | |||||
Die electrical strength | 800V | 1000V | ||||
4. Spring Coil Heater Application
This Heating Coil is widely applied for hot runner system, plastic industry, packaging machinery, medical
equipment, casting process,other electric heating industry, etc..
