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TM9300 Fluxgate Magnetometer Calibration Device

TM9300 is a high-precision fluxgate magnetometer calibration device. It is suitable for calibrating single-axis and three-axis fluxgate magnetometers; it is suitable for metrology laboratories to establish weak magnetic field strength measurement and testing standards; it is also suitable for various research institutes, universities, and enterprises to conduct electromagnetic interference simulation experiments and material magnetic testing experiment, etc.

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Model:
TM9300
Brand:
TUNKIA

*Reference only. Configuration and details may vary slightly corresponding to application.

1. Summary

TM9300 is a high-precision fluxgate magnetometer calibration device. It consists of a DC current standard source, a three-axis Helmholtz coil, a magnetic shielded cylinder, a three-axis flux gate precision magnetometer, and automatic calibration software. TM9300 is suitable for calibrating single-axis and three-axis fluxgate magnetometers; it is suitable for metrology laboratories to establish weak magnetic field strength measurement and testing standards; it is also suitable for various research institutes, universities, and enterprises to conduct electromagnetic interference simulation experiments and material magnetic testing experiment, etc. Reference standard: JJF 1519-2015 "Fluxgate Magnetometer Calibration Specifications".

2. Features

• Equipped with a bipolar three-channel precision current source.

• Three channels can output current synchronously or asynchronously.

• The stability of the current source reaches 10 ppm/min.

• The accuracy of the current source reaches class 0.01.

• Annual error variation is better than 100 ppm.

• Use triaxial Helmholtz coil as magnetic field generator

• The single-axis coil can generate a standard magnetic field of up to 1000μT.

• Equipped with a special magnetic shielded cylinder, the internal magnetic field after degaussing is < 2 nT.

• The coil can be placed in a shielding cavity to shield the interference from environmental magnetic fields.

• The system adopts modular integrated design.

• Equipped with calibration software.

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3. Application

☆ Calibrate Fluxgate Magnetometer

• DUT: single-axis/three-axis fluxgate magnetometer.

• Reference standard: JJF 1519-2015 "Fluxgate Magnetometer Calibration Specifications".

• Application: calibration of magnetometer magnetic induction intensity, noise, zero bias, and time drift, etc.,

4. Specifications

4.1 Three-Channel DC Current Standard Source


• This current source is a bipolar three-channel precision DC current standard source. • It can accurately output ± (0~500mA) DC current synchronously or asynchronously. • The current source can be continuously adjusted through program control, and has a small adjustment fineness. • The current output stability is better than 10 ppm/min, and the annual error change is better than 100 ppm.
Specifications
Output Range	± ( 0~500 mA )
Adjust Fineness	5 ppm*RG
Short Term Stability	10 ppm/min
Measurement Uncertainty (K=2)	0.006%RD①+ 0.004%RG②
Full Scale Linearity	< 10 ppm
Annual Error Change	< 100 ppm
Single Channel Maximum Load Voltage	20 V
Protective Function	open circuit protection, overload protection functions
Power Supply	AC ( 220 ± 22 ) V，( 50 ± 2 ) Hz
Note: ① RD is the reading value, ② RG is the range vaule.

4.2 Triaxial Helmholtz Coil


• The coil can be excited by a high-precision DC standard current source. • Each axis can generate a maximum standard magnetic field of ±1000 μT.
Specifications
Excitation Current	± ( 5 mA～500 mA )
Maximum Magnetic Field (Single Axis)	± 1000 μT
Maximum Resultant Vector Magnetic Field	± 1732 μT
Magnetic Field Uniformity	Uniform field within 10 mm is better than 100 ppm
Magnetic Field Linearity	The magnetic field is proportional to the excitation current and has good linearity.
Temperature Influence	The coil constant K changes little with temperature, minimizing the influence of temperature.
Inner Hole Diameter	170 mm
Maximum Diameter	250 mm

4.3 TM4830B Fluxgate Magnetometer


• TM4830B is a high-precision three-axis fluxgate magnetometer. • Equipped with a high-precision fluxgate probe with a 100μT range • Suitable for measuring the magnetic remanence and environmental magnetic field of magnetic shielded cylinders. • It can form a closed loop with the magnetic field generation system and realize feedback control through measured values.
Specifications
Single Axis Measuring Range	0～± 100 μT
Resolution	0.01nT
Optimal Measurement Uncertainty (K=2)	0.2%
Linearity	< 0.0015%
Frequency Response	DC～3 kHz
Noise (Typical Specifications)	6~10 pTrms /√Hz@1Hz
Note	The above indicators are related to the probe configuration.

4.4 TM2900 Magnetic Shielded Cylinder


• The inner frame is made of multi-layer coaxial high-permeability alloy. • The large range of the central area in the hole can be regarded as zero magnetic field. • Can be used for the research and development, testing and calibration of weak magnetic instruments.
Specifications
Residual Magnetism (After Degaussing)	2 nT
Attenuation	-80 dB
Inner Hole Size	Approx Ф300 mm × 1000 mm
Size	Approx Ф600 mm × 1000 mm
Operating Temperature	-20℃～70℃
Note	A demagnetizer can be used to demagnetize the shielded cylinder before testing for better shielding.

5. General Specifications

Power Supply

AC ( 220 ± 22 ) V, ( 50 ± 2 ) Hz

Temperature Performance

Working temperature: 0℃～50℃

Storage temperature: -20℃～70℃

Humidity Performance

Working humidity: 40%～80% R H; non-condensing

Storage humidity: < 80% R H; non-condensing

6. Configuration List

S/N	Name	Quantity	Configuration	Note
1	Three-channel DC Current Standard Source	1	Standard	Three-channel Output
2	Triaxial Helmholtz Coil	1	Standard
3	TM4830B Fluxgate Magnetometer	1	Standard	Standard 100μT Range Probe
4	Magnetic Shielded Cylinder	1	Standard	Degaussing Machine
5	Fully Automatic Calibration Software	1	Standard	Software CD
6	Test Leads and Power Cables	1	Standard
7	Workbench	1	Optional Accessory	Third party product
8	Computer	1	Optional Accessory	Third party product
9	Printer	1	Optional Accessory	Third party product