In this product division BROCKHAUS offers a wide range of products including measuring instruments for the testing of electrical steel sheet. The measuring techniques used in the international standards IEC 60404-2 for an Epstein frame and IEC 60404-3 for the Single Sheet Tester are also used here.
Apart from the calibration of reference samples (Epstein and single sheet samples) BROCKHAUS also calibrates measuring instruments and coil systems for these measurements. BROCKHAUS measuring instruments have proved to reach the measuring accuracy and repeatability especially required for measurements according to IEC 404-2 on an international basis.
Material tests and calibrations available in the BROCKHAUS calibration laboratory are listed below. The calibrations can be carried out either in our laboratory in Lüdenscheid or, if possible, directly at the customer’s site.
| Test Method | Measuring coil | Material | Field Strength | Standard |
| Material testing of electrical steel sheets |
Epstein Frame | DC, 1 Hz up to 2 kHz | max. 30000 A/m | IEC 60404-2 |
| Single Sheet Tester (SST) 500 mm x 500 mm |
DC, 1 Hz up to 400 Hz | max. 30000 A/m | IEC 60404-3 | |
| Single Sheet Tester (SST) 30 mm x 100 mm |
DC, 1 Hz up to 400 Hz | max. 10000 A/m | ||
| Single Sheet Tester (SST) 117 mm x 120 mm |
DC, 1 Hz up to 400 Hz | max. 10000 A/m | ||
| DC, 1 Hz up to 400 Hz | max. 10000 A/m | |||
| Sensor for stampings C-500 |
50 Hz up to 400 Hz | max. 10000 A/m | ||
| Calibration of electrical sheet measuring equipment |
Epstein Frame | DC, 1 Hz up to 2 kHz | max. 30000 A/m | IEC 60404-2 |
| Single Sheet Tester (SST) 500 mm x 500 mm |
DC, 1 Hz up to 400 Hz | max. 30000 A/m | IEC 60404-3 | |
| Calibration of reference samples |
Epstein Frame | DC, 1 Hz up to 2 kHz | max. 30000 A/m | IEC 60404-2 |
| Single Sheet Tester (SST) 500 mm x 500 mm |
DC, 1 Hz up to 400 Hz | max. 30000 A/m | IEC 60404-3 |