Overview
Application
The magnetic, handheld field sensor coil FESP 5134-40 was designed to determine the magnetic fieldstrength during immunity tests in conjunction with an appropriate voltmeter. The main application is in the audio frequency range and above up to approx. 250 kHz and fieldstrength values of 1 A/m or higher.
The coil axis is perpendicular to the coilplane, i.e. the maximum field indication is given with magnetic field lines being perpendicular to the coil-plane. The specified data refers always to uniform fields and optimum alignment of FESP 5134-40.
| Specifications | |
| Number of turns | 51 |
| Coil diameter | 40 mm |
| Usable Frequency Range | 5 Hz - 250 kHz |
| Resonance frequency | ca. 1 MHz |
| Inductance | ca. 100 µH |
| Resistance | 5 Ω |
| Weight | 43 g |
| Dimensions | 70x31x45 mm |
| Shield | Electrostatic |
| Terminals | BNC |
| Mounting Thread | 1/4" |
Conversion for Voltmeters with 50 Ω Input
Voltage for Voltmeters with 50 Ω Input
The dB-value of the column "Conversion" must be added on the dBµV-reading of the 50 Ω voltmeter to obtain the magnetic fieldstrength in dBµA/m or dBpT respectively.
1 µT = 0.7958 A/m = -1.984 dBA/m = 118.02 dBµA/m = 0 dBµT = 120 dBpT
1 A/m = 1.2566 µT = 0 dBA/m = 120 dBµA/m = 1.98 dBµT = 121.98 dBpT
