Tunkia TD81 AC Magnetic Properties Measuring System for Soft Magnetic Materials (20 Hz ~ 1MHz)

- Magnetic Parameter specifications: 

Main magnetic parameters/ Uncertainty ( k = 2 ) @1 kHz/ Repeatability

Ps/ 2.0%/ 1.0%

μa/ 3.0%/ 1.0%

Bm/ 1.0%/ 0.5%

Hm/ 1.0%/ 0.5%

δ/ 5.0%/ 1.5%

Other parameters/ Uncertainty ( k = 2 ) @1 kHz/ Repeatability

Br/ 2.0%/ 1.0%

Hc/ 3.0%/ 1.0%

μ’ / 3.0%/ 1.0%

μ′′/ 3.0%/ 1.0%

μL/ 3.0%/ 1.0%

Testing conditions：( 23±5 )°C，20 Hz ≤ F ≤ 20 kHz，demagnetized before testing.

The ratio of the outer diameter to the inner diameter of the measured specimen should not be greater than 1.4, preferably less than 1.25.

- Electrical Parameter Specifications: 

Voltage Range: 10 mVpk～68Vpk

Current Range: 0.5 mApk～6 Apk

Frequency Range: 20 Hz... 1 MHz

Frequency Uncertainty: 0.1%

Frequency Range (Hz)/Power (Peak)/Voltage and Current Uncertainty (k=2)/Power Uncertainty (k=2)

20 ≤ F ≤ 1 k/400VA/0.05%*RG/0.1%*FS

1 k < F ≤ 10 k/400VA/0.1%*RG/0.2%*FS

10 k < F ≤ 100 k/400VA/1.0 %*RG/2.0%*FS

100 k < F ≤ 300 k/240 VA/2.5%*RG/5.0%*FS

300 k < F ≤ 500 k/240 VA/5.0%*RG/8.0%*FS

500 k < F ≤ 1 M/200 VA/8.0%*RG/12%*FS

- General Specifications: 

Power Supply: AC ( 220 ± 22 ) V，( 50 ± 2 ) Hz

Temperature Performance: 

Operating Temperature：0°C～45°C

Storage Temperature：-20°C～70°C

Humidity Performance:

Operating Storage：< 80% @ 30°C，< 70% @ 40°C，< 40% @ 50°C

Storage Humidity：(20%～80%) R•H，non-condensing

1. Summary

TD81 Series is AC Magnetic Properties Measuring System for Soft Magnetic Materials. The product design conforms to the standard IEC 60404-6, GB/T 3658-2008. These series instruments cover frequency range from 20 Hz up to 1 MHz, depending on the selected model. It used for testing the AC magnetic properties and curves of ring core specimen.

2. Application