Description - Magnet-physik FH 55 Operating Instructions Manual

Gauss- / Teslameter FH 55
definitions are contained in chapter Service. Additional details on FH 55 accessories and probes
are provided in Chapter Accessories.
We welcome your comments concerning this manual. Although every effort has been made to
keep it free from errors, some may occur. When reporting a specific problem, please describe it
briefly and include the appropriate paragraph, figure, table, and page number. The material in
this manual is subject to change without notice.

3.2 Description

The FH 55 is an accurate, full-featured gaussmeter. It covers a wide range of magnetic fields
and applications. The instrument provides the user with easy-to-use front panel programming
and incorporates a liquid crystal display. The alphanumeric format allows for message-based
front panel operation. Most operations can be performed and monitored through the front panel
keypad. Some rarely used functions can be accessed through a menu.
Fig. 1 : Gauss-/Teslameter FH 55
The FH 55 measures the magnetic flux density (induction) either in Tesla (T) or Gauss (G) or
the magnetic field strength in Ampere per Meter (A/m). Magnetic field ranges can be set
manually or with auto ranging. The instrument measures both DC (static) and AC (periodically
alternating) magnetic field values. In DC operation, the display shows the DC field at the probe
with the sign (field orientation) followed by the appropriate field units. In AC operation, the
display shows RMS or Peak value for the field at the probe. The values are available over the
Serial Interface and also the Analog Output. This Analog Output allows the user to observe the
actual magnetic field waveform on an oscilloscope.
The Max./Min. function captures and displays the largest field magnitude seen since the last
Reset. The maximum value is shown in the second display line while the upper display line
contains the live field reading. Alternatively, also the highest and the lowest value can be
TH
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