Products

Magnetic Field Strength Meter Gaussmeter/Teslameter FH 51 + FH 54

Data Sheet Datenblatt

Description

A particular feature of both the Gaussmeter FH 51 and the Gaussmeter FH 54 is the easy handling and the multitude of functions. They enable measurement of the magnetic flux density or field strength in Tesla (T), Gauss (G) or Ampere per meter (A/m).

The Gaussmeter FH 51 is the favourably-priced introductory model to the Magnet-Physik Gaussmeter range. Apart from the possibility of measuring direct and alternating fields, the Gaussmeter FH 51 offers the following functions: maximum value storage (max. hold), adjustable limit values (limit) and a filter for noise-laden signals. The relative function allows the difference to a set value to be displayed. The probes can be attached to the device either with the appropriate connecting cable or plugged in directly. The Gaussmeter FH 51 is equipped with a transverse probe. Other probes are also available.

The Gaussmeter FH 54, although a hand held device, displays an extremely high degree of measuring accuracy. It has all the functions of the Gaussmeter FH 51 and additionally, among others, a peak value function (peak hold). This enables the maximum values of even very short magnetising impulses to be recorded. The Gaussmeter FH 54 has an analog output and a computer interface. Many different Hall probes are available, for example probes with especially small active areas for measurements of the size of a dot, or probes with a high degree of sensitivity or with a built-in sensor for correction of temperature dependency. The latter also allows display of the temperature.

Both have a handy, well-designed foil keyboard protecting the inside from dirt. All important functions are available at the touch of a key. The device is placed in a modern, attractive casing. The large LCD display allows easy reading. The remaining battery power is shown in the display. The Gaussmeters are packed in very robust cases for transport and storage.

Functions Gaussmeter/Teslameter

Model	FH 51	FH 54
Auto zero	+	+
Auto range	+	+
Relative-measurement	+	+
Filter	+	+
Battery status indicator	+	+
Max/Min hold	Max	Max, Min
Limit	1	2, ± or absolute
Peak hold		+
Probe temperature correction		+
Temperature display		+
Probe linearity correction		+
Analog output		+
Computer interface		+

Model	FH 51	FH 54
Display	3½ digit (1...1999)	3¾ digit (1...2999)
Units	Tesla, Gauss, Ampere/Meter	Tesla, Gauss, Ampere/Meter
Ranges	20 mT 200 G 16 kA/m 200 mT 2 kG 160 kA/m 2 T 20 kG 1600 kA/m	30 µT* 300 mG* 24 A/m* 300 µT* 3 G* 240 A/m* 3 mT 30 G 2.4 kA/m 30 mT 300 G 24 kA/m 300 mT 3 kG 240 kA/m 3 T 30 kG 2400 kA/m 30 T* 300 kG 24 MA/m* *special probes necessary
Resolution (in the most sensitive range)	0.01 mT   0.1 G   0.01 kA/m	depends on probe type
Basic Accuracy	DC: ±2% (with standard probe) AC: ±5%	DC: ±0.3% (without probe) AC: ±2%
Frequency range	DC (with polarity display) AC approx. 20 Hz - 10 kHz (true rms)	DC (with polarity display) AC approx. 20 Hz - 20 kHz (true rms)
	limits depend on excitation and probe type
Peak Hold	-	> 150 µs
Analog output	-	± 3 V, BNC connector
Interface	-	RS 232, DB-9 connector
Temperature range
– operation	+10 °C to +40 °C	+10 °C to +40 °C
– storage	-40 °C to +60 °C	-40 °C to +60 °C
Power source	Batteries, 4 x 1.5 V size AA	Batteries, 5 x 1.5 V size AA
– Operating time	approx. 40 hours	depends on probe type connector for optional AC adapter
Accessories / Options
– Hall probes	Transverse probe (standard with meter), Axial probe, Surface field probe	see probe data sheet
– Probe connection cable	1 m (standard with meter), 3 m (optional)	fixed to the probe, different length available
– Zero field chamber	optional	standard with meter
– Hard case	standard with meter	standard with meter
– AC adapter	-	optional, with Euro- or US-connector, recommended for continuous operation
– Relay output for limit	-	optional, 2 c-form relays
Outer dimensions	228 mm x 70 / 117 mm x 47 mm	266 mm x 90 / 144 mm x 60 mm
Weight	approx. 0.4 kg	approx. 0.5 kg