Magnetic Field Meters

Magnetic field tester Rotor-Check 400

Test apparatus for measurement of magnetic field strength curve of rotors

Rotor-Check 400 is a practical testing device used to check the magnetic field strength curve of a rotor. The device and measuring probe connect directly to a Windows PC via USB. It is an ideal solution for precise magnetic field measurement and analysis.

With the Rotor-Check 400, you can precisely determine numerous parameters of a magnetic rotor.

Magnet quality and magnetization
Assembly errors in the lamination stack
The effects of inhomogeneity in the laminated core
The position of the lamination stack relative to the shaft
Stray field magnetization
Local and global pole peaks
Flux density at the pole center
Pole width
Pole misalignment
Pole comparison

The high-resolution, precise stepper motor can rotate the rotor through 360° in seconds. Using the free RotorCheck software, you can record an accurate curve of the magnetic field strength and angle, then evaluate it statistically. The measuring probe is kept at a consistent distance from the rotor using a height-adjustable mounting device. This ensures comparable magnetic measurements during rotation and a precise magnetic field strength across the entire rotor path.

The rotor shaft can be up to 13 mm thick. The measuring probe is adjustable up to 12 cm, allowing for flexible handling of different rotor sizes.

With the RotorCheck software, you can record the measured values and export the recorded measurement data as a graph or CSV file. This allows you to evaluate and document the magnetic field measurement in detail, for example, in Microsoft Excel.

Magnetic field tester Rotor-Check 400 with PC

The Rotor-Check 400 comes with a Transversal Flexible Reed Probe LM-MP-PM4-TR . Three holders for the measuring probe are included for axial (e.g., sensor magnet) or radial (e.g., magnetic rotor) measurement. Customers can request adapter sleeves to enable measurement at specific distances from the magnetic rotor.

The Rotor-Check 400 and its associated measuring probe connect to a PC or laptop via two USB ports and do not require an additional external power supply.

Application example

Technical data Magnetic field tester Rotor-Check 400
Measuring units:	A/cm – kA/m – Gauss – mTesla switchable (1 A/cm = 0.1 kA/m = 1.256 Gauss = 1.256 Oersted = 0.1256 mT)
Probe:	Transversal Flexible Reed Probe LM-MP-PM4-TR
Measuring range DC:	0-40,000 A/cm (± 4000mT)
Accuracy:	± 1 A/cm up to 50 A/cm, ± 2% of measured value from 50 A/cm
Measuring direction:	Radial or axial
Resolution:	0.1 A/cm (0.01 mT)
Maximum rotor diameter:	d <= 60 mm
Probe height:	maximum 12 cm
Mounting for rotor axis:	d= 0.3 mm - 13 mm
Höhe der Sonde:	maximal 12 cm
Minimum measuring distance:	0.3 mm (when the probe touches the rotor)
Display:	Instantaneous field strength over the course of one or more revolutions
Number of measuring points:	for one revolution (360°), adjustable 300 / 500 /1000 measuring points
Measuring duration:	adjustable: 23 / 45 / 90 seconds for 360°
Storage of measurement curve:	CSV file (e.g. for import into Microsoft Excel), image file (.png)
Calibration:	Zero point calibration via software (must be performed with the rotor removed)
Connection:	2 x USB port to PC
Power supply:	USB
Dimensions:	120 x 60 x 195 mm
Weight:	780 g