Temperature tester

permeabilityloopfor electrical appliances

The Curie temperature tester determines the critical temperature (Curie point) at which a ferromagnetic material transitions from ferromagnetism to paramagnetism during heating. It monitors sudden changes in magnetic permeability or the disappearance of the hysteresis loop to characterize thermomagnetic properties and is suited for magnetic materials research and teaching experiments.

Instrument composition:

• The system comprises the Curie temperature tester and a mechanical assembly including a heating device, temperature control and measurement units, magnetization and detection modules, and an air-cooling unit.

Product features:

• Compact bench-top design with lightweight mechanical structure.
• Temperature sensor with PID automatic control for precise, stable temperature regulation.
• Integrated mechanical layout for measurement stability and repeatability.

Experimental details:

• Measure magnetic moment of NdFeB and pure nickel samples across a temperature range.
• Plot Curie temperature curves, determine the Curie point, and validate the measurement principle of Curie temperature testing.

Experimental objectives:

• Understand the microscopic principles behind the transition from ferromagnetism to paramagnetism.
• Learn principles and procedures for measuring Curie temperature using a Curie temperature tester for ferromagnetic materials.
• Determine Curie points of different ferromagnetic samples.

Technical specifications:

• Power supply: 220 V / 50 Hz
• Magnetic field strength: 400 GS
• Heating power: 105 W
• Temperature range: room temperature to 0–400 °C
• Temperature control accuracy: ±1 °C
• Resolution: 1 °C
• Integrator drift (1×100 scale): less than 30 s per character
• Integrator measurement accuracy: better than 2%
• Sample size: Φ 6 × 8 mm