Measuring Magnetic Fields with the New FG16

FG16-front

 

The new FG16 is a modular device to measure magnetic values.

The 4 available slots can be equipped with plug-in units for fluxmeters, gaussmeters and fluxgates in any combination.

The completely redesigned analog-/digital-hybrid design of the fluxmeter plug-in allows measurements of both high-dynamic as well as very fast events and is virtually drift-free.


The FG16 measures, among others, the following magnetic values:

  • Flux Φ (in Wb, Vs)
  • Flux density B (in T)
  • Field strength H (in A/m)
  • Polarization J (in T)
  • Dipole moment m (in Am²)

Custom-designed probes complete the measuring application.

The FG16 is easy and intuitive to use with a touch display and separate buttons.

Additionally, the FG16 provides a variety of modern interfaces such as Ethernet, USB, CAN bus, RS232, analog and 24 V digital signals for control and output of measurement results.

The device is suited for demanding measuring applications in the field of research and development as well as for automatic process control, quality assurance and incoming goods inspection.


Typical application examples:

  • Flux or flux density measurement of a work piece during magnetization
  • Stray field measurement
  • Test of the dipole moment and the polarization of a magnet

Probes with integrated parameter memory simplify correct measurements.

Comprehensive accessories, such as probes, reference magnets, also in special design, are available.

 

Special Features

  • Modular design
    (up to 4 plug-in units, e,g. fluxmeter)
  • Color touch display
  • Easy to use
  • Standard interfaces implemented
  • Very low drift
  • Probe connector with low thermo-
    electric potential
  • Automatic probe detection
  • Fast and high-dynamic measuring
  • Measuring unit freely selectable
  • Internal window comparator
  • Self-test on power-up
  • Integrated calibrator
  • Digital pos./neg. peak memory
  • Analog peak-hold function
  • Firmware updates via PC
  • 2nd input jack on rear side
  • Fequency range 0 ... 20 kHz
  • Sturdy case with option for 19 inch
    rack mount

 

Specifications

General

Display Color touch LCD, 95 mm × 52 mm, 480 × 270 pixels
Display rate 10 times per second
Input connection Jacks with low thermoelectric potential at front and rear side
Unit systems SI, CGS, support of metric and imperial units
Interfaces

Analog ±10 V, 200 Ω

RS232 DE-9 plug, adjustable parameters

CAN bus DE-9 plug, adjustable parameters

LAN RJ45, 10/100 Mbit

24 V IO DB-25 socket, 8 inputs, 8 outputs, optically decoupled

USB 2.0, front side type A, rear side type B

Dimensions 125 mm × 260 mm × 260 mm (H × W× D)
Weight 2.85 kg (6.3 lbs.) incl. 4 plug-ins, without packaging and accessories
Power supply 100 – 240 V, 47 – 63 Hz, max. 25 VA, interference suppression for 50/60 Hz line frequency
Temperature range

Operating: 0 °C to +55 °C,
< 80% relative humidity at +40 °C non-condensing
Non-operating: −30 °C to +70 °C



Fluxmeter Plug-in

Measuring method Low-drift integrator with dynamic drift adjustment 
Function/unit Magnetic flux Φ Wb, V·s, Mx
Magnetic flux density B T, G
Magnetic field strength H A/m, Oe
Magnetic polarization J T, G
Magnetic dipole moment m A·m², V·s·m, erg/G
Magnetic potential difference Vm A, Gb
Range
(Resolution)

Flux

± 1 mVs (0.1 μVs)
± 10 mVs (1 μVs)
± 100 mVs (10 μVs)
± 1 Vs (0.1 mVs)

The range and the resolution of the derived values depend on the used probe.

Range selection automatic, manual
Frequency range 0 … 20 kHz
Accuracy 0.5 % after self calibration
Calibration Internal voltage and time reference
Drift < ± 2 μVs/minute
Input resistance 100 kΩ ± 0.1 %

 



Gaussmeter Plug-in

Measuring method Flux density measurement with calibrated Hall element
Function/unit Magnetic flux density B T, G
Magnetic field strength H kA/m, Oe

Range
(Resolution)

 

(Measurements above 4.5 Tesla only with special probes)

 

Flux density Field strength
± 10 mT
(0.001 mT)

± 100 G
(10 mG)

± 100 Oe
(10 mOe)
± 10 kA/m
(1 A/m) 
± 100 mT (0.01 mT)

± 1 kG
(100 mG)

± 1 kOe
(100 mOe)
± 100 kA/m
(10 A/m)
± 1 T
(0.1 mT)
± 10 kG
(1 G)
± 10 kOe
(1 Oe)
± 1000 kA/m
(100 A/m)
± 10 T
(1 mT)
± 100 kG
(10 G)
± 100 kOe (10 Oe) ± 8000 kA/m
(1 kA/m)
Frequency range  DC/AC 0 Hz … 5 kHz (effective value)   
Peak hold value Event duration > 250 μs
Accuracy DC ± 0.5 % to 1.5 T or. ± 1 % above 1.5 T; peak ± 2 %; AC ± 2 %

 

Standard Accessories

  • FG16 base unit
  • Plug-in unit according to configuration
  • User manual
  • Calibration certificated
  • USB cable

 

Optional Accessories

  • Search coils (fluxmeter)
  • Helmholtz coils (fluxmeter)
  • Hall probes
  • Reference magnet
  • 19 inch rack mount kit
  • Open-ended shielded measurement cable (length: 2 m) with plug and integrated parameter memory to connect own coils
  • Coaxial cable with BNC connectors (length: 2 m)