FP Series Hall Probes

FP Series Hall probe features

• Wide field range—suited for everything from earth-field to the world’s strongest electromagnets
• 2Dex™ sensors with tiny active area of just 0.1 mm² for more precise measurements
• Temperature and linearity (field) compensation are built-in
• Versatile handle and stem options to suit numerous applications
• Ease of use features such as active area and polarity indicators
• Application-specific probe customization available

FP Series probe specifications

Sensor type

	Sensor	Description	Active area
2X-250	2Dex™ 2X-250	2Dex™ standard sensor	0.1 mm2

Temperature compensation

	Built-in thermistor	Temperature range
Standard	Yes	0 °C to 90 °C
Flexible-thin	Yes	0 °C to 90 °C
Cryogenic	No	1 K to 400 K using external temperature data

Stem material

	3-axis	Transverse	Axial
Standard	Anodized aluminum tube with a 4 mm square cross section	Anodized aluminum tube with a 1.55 mm maximum thickness by 4.57 ±0.13 mm rectangular cross section	Anodized aluminum tube with a 2 mm diameter circular cross section
Flexible-thin	NA	FR-4 PCB 1.14 mm maximum thickness by 3.53 mm	NA
Cryogenic	NA	316 stainless steel tube with 4.75 +0.15/-0.11 mm diameter circular cross section	316 stainless steel tube with 4.75 +0.15/-0.11 mm diameter circular cross section

Stem length

Distance from tip of sensor to beginning of handle

Stem operating temperature range

	3-axis	Transverse	Axial
Standard	0 °C to 90 °C	0 °C to 90 °C	0 °C to 90 °C
Flexible-thin	NA	0 °C to 90 °C	NA
Cryogenic	NA	1.5 K to 363 K	1.5 K to 363 K

Handle

	Handheld (default)	Mountable
Length, including strain relief	138 mm	110 mm
Diameter	13 mm	NA
Thickness	NA	10 mm
Width	NA	12 mm
Material	ABS/polycarbonate blend with anodized aluminum grip	Machined aluminum with brass screws. Mountable to fixture using customer supplied M2 screws with 3.8 mm diameter socket head and 2 mm diameter alignment pins
Operating temperature range	0 °C to 80 °C	0 °C to 80 °C

Cable

	Single-axis	3-axis
Diameter	4 mm (0.17 in)	5.2 mm (0.21 in)
Bend radius	40 mm (1.57 in)	52 mm (2.05 in)
Operating temperature range	-40 °C to 80 °C
Conductors	4 twisted-pair	8 twisted-pair
Cable shield	100%-coverage foil
Cable insulation	Modified polyphenylene ether
Connector	26-pin Mini-D with quick-release latch

Probe configuration options

Customize your probe using the range of available options to match your application.

FP-aa-bbb-cd ee(f)(-gg)

Sensor

2X-250

2Dex™

Sensor

2X-250

2Dex™

2Dex™ sensors are currently the only sensor types currently available with FP Series probes. These are the first probes to feature 2Dex sensors which offer a great balance of sensitivity, linearity, stability and ruggedness. These sensors set the new standard for the majority of field measurement applications.

Orientation

Z	3-axis
T	Transverse (single-axis)
A	Axial (single-axis)

Orientation

Hall sensors are inherently directional, so the anticipated field direction will guide the selection of probe orientation.

Z

3-axis

Multiple sensors are placed to measure three orthogonal field vectors, allowing the measurement of both the overall field value and direction. This is particularly useful in several scenarios:

• Complex fields where the field direction is not known or changing over time
• Quick handheld measurements
• Field mapping of a volume

The three individual sensors don’t occupy the exact same location, meaning the three separate measurements are for slightly different positions in space. This results in the specification of an active volume, as opposed to an active area for single-axis probe variants. These probes can be identified by their square stem cross-section.

3-axis probes are only available with a standard stem up to 30 cm in length.

 

T	Transverse (single-axis)

The sensor is positioned to measure fields running perpendicularly through the probe stem. This is most useful for measuring fields inside magnet gaps. These probes are easily identified by their flattened rectangular stem.

 

A	Axial (single-axis)

The sensor is placed very near to the tip of the probe and aligned to measure fields normal to the tip of the probe. This orientation is necessary when measuring inside solenoids, and can be useful for measuring fields at magnet poles due to the increased ease of alignment and fine adjustment.

Axial probes are not offered with a flexible-thin stem.

Stem type

S	Standard
F	Flexible-thin
C	Cryogenic (coming soon)

Stem type

The sensor/s are housed in stem types suited for various applications. Where possible, active area locations are marked on the stems.

S

Standard

The general-purpose stem options offer an excellent balance of size and strength. Constructed from extruded and precision machined aluminum, these stems will be the superior choice in most situations.

 

F	Flexible-thin

This stem type is currently only available as a transverse orientation option at a fixed stem length. The surrounding aluminum stem of the standard probe is removed, exposing the PCB and sensor element. This results in a somewhat flexible stem that is also thinner than the standard offering, making it the best probe for measuring in very thin magnet gaps. It is possible to snap the PCB stem of this probe with excessive bending, so this should be minimized to prolong the life of the probe.

This stem also features a helpful ruler printed directly on the PCB. Useful in determining just how far the probe has been inserted into the magnet gap.

 

C	Cryogenic (coming soon)

Ultra-low temperature applications require a more drastic overhaul of the probe stem:

• Non-magnetic stainless-steel alloy minimizes heat leak, while providing strength
• Greater stem lengths offered as standard to reach into the cryogenic environment
• Vented at the tip to allow cryogens to escape safely
• Cryogenic 2Dex™ sensors used in place of standard solution

Due to the increased sensor size used in these probes, 3-axis probes with very small active volumes are not possible. Contact us if you have an application that requires multi-axis cryogenic measurements to discuss options.

Stem length

05	5 cm (2 in)
15	15 cm (6 in)
30	30 cm (12 in)
150	150 cm (60 in)

Stem length

FP Series probes come in various lengths to suit your application.

 

 

	5 cm (~2 in)	15 cm (~6 in)	30 cm (~12 in)	150 cm (~60 in)
	05	15	30	150
Standard	?	?	?
Flexible		?
Cryogenic			?	?

If your application requires a non-standard stem solution, please contact us to discuss options.

Special handle (optional)

	Handheld (default)
M	Mountable

Special handle (optional)

Both handle options include polarity indicators when ordered with a transverse orientation, making it easy to quickly determine whether a magnet polarity has been switched, or if the probe is just being held incorrectly.

 

Handheld (default)

The default handle configuration is deigned to be a comfortable and functional handheld solution with an anodized aluminum grip for a solid and long-lasting grip surface.

M

Mountable

In situations where probe fixturing is required to achieve repeatable measurements, the mountable form factor features a flat machined aluminum surface. It also includes locating pinholes for precise probe alignment and is easily held in place with just two screws.

Publicly available drawings and CAD models for this handle will make integration with your hardware quick and easy while minimizing the risk of a design error. These handles are available with standard and flexible stem choices.

Cryogenic probes are not available with a mountable stem.

Additional cable length (optional)

	2 m (6 ft) (default)
6	6 m (20 ft)
15	15 m (50 ft)

Additional cable length (optional)

2 m (6 ft)	6 m (15 ft)	15 m (50 ft)
	6	15

The probe cable and connector have also received close attention to optimize performance and usability. The shielded cable was selected to be as thin and light as possible, while using a special insulation that is both recyclable and forms a part of the TruZero™ technology that allows the probes to operate without needing to zero.

The connector makes use of the compact Micro-D standard to support all connections required for a 3-axis probe in a reasonably sized package. Both single and multi-axis probes use this connector, so there is no need to pay special attention to making individual axis connections as is the case for other multi-connector solutions. A user-friendly latching mechanism means swapping probes is fast and trouble free and can be accomplished in just a few seconds.

Calibration data for the probe is stored inside the connector, allowing for fast and simple probe swapping. The teslameter configures itself automatically each time a probe is connected.

All probes come with a standard 2 m (6 ft) cable, but can be customized with either a 6 m (20 ft) or 15 m (50 ft) cable if you require more distance between your teslameter and field source. This is particularly important for very large fields, as the teslameter unit itself should not be exposed to strong fields.

FP Series probe availability

Transverse				Stock probes highlighted in yellow
Stem type	Stem material	Stem size	Form factor	Stem lengths (cm)				Part number	Available
Standard	Aluminum	1.55 × 4.57 mm	Handheld	5	15	30	—	FP-2X-250-TSXX	Now
			Mountable	5	15	30	—	FP-2X-250-TSXXM	Now
Flexible-thin	PCB	1.14 × 3.53 mm	Handheld	—	15	—	—	FP-2X-250-TF15	Now
			Mountable	—	15	—	—	FP-2X-250-TF15M	Now
Cryogenic	Stainless steel	4.75 mm diameter	Handheld	—	—	30	150	FP-2X-250-TCXXX	Coming soon
Axial
Stem type	Stem material	Stem size	Form factor	Stem lengths (cm)				Part number	Available
Standard	Aluminum	2 mm diameter	Handheld	5	15	30	—	FP-2X-250-ASXX	Now
			Mountable	5	15	30	—	FP-2X-250-ASXXM	Now
Cryogenic	Stainless steel	4.75 mm diameter	Handheld	—	—	30	150	FP-2X-250-ACXXX	Coming soon

 

3-axis
Stem type	Stem material	Stem size	Form factor	Stem lengths (cm)				Part number	Available
Standard	Aluminum	4 mm × 4 mm	Handheld	5	15	30	—	FP-2X-250-ZSXX	Now
			Mountable	5	15	30	—	FP-2X-250-ZSXXM	Now

 

 

1 - Model 460 Fluxmeter

An advanced tool designed primarily for use in industrial and measurement systems settings, the Model 480 fluxmeter measures total flux from which B, flux density, and/or H, magnetic field strength, can be determined. The Model 480 is valuable for magnetizing, manual and automated magnet testing and sorting, and as the main component in BH loop or hysteresis measurement system applications. The Model 480 fluxmeter is compatible with most sensing coils and fixtures. More information on the Model 480 fluxmeter...

 

• Manual magnet testing
• Automated magnet testing
• Magnetizing
• Materials analysis
• AC magnetic fields
• Drift adjustment
• Model 480 rear panel
• Display
• Helmholtz and search coils

Model 480 Features

• 5¾ digit DC resolution (1 part out of ±300,000)
• Automatic drift compensation
• Very fast peak capture
• AC frequency response to 50 kHz
• IEEE-488 and serial interfaces
• Storage of parameters for up to 10 existing coils

Specifications

Measurement

Number of units: 1

Input type: 2-lead, ground referenced

Input resistance: 100 kΩ or 10 kΩ

Maximum operating input voltage: 60 V

Absolute maximum input voltage: 100 V — WARNING — voltages between 60 V and 100 V will not damage the instrument but could result in personal injury or damage to other instruments

Update rate: 5 rdg/s display; 30 rdg/s IEEE-488; 30 rdg/s serial

DC

DC resolution: To 5¾ digits

DC integrator capacitance: 1 µF nominal

DC input resistance: 100 kΩ 10 kΩ

DC ranges: 300 mVs, 30 mVs, 30 mVs, 3 mVs

DC resolution: 0.001 mVs, 0.0005 mVs, 0.0005 mVs, 0.0005 mVs

DC accuracy: Offset: ±10 µVs ±DC integrator drift; Gain: ±0.25% of reading (<10 Vs/s maximum rate of change)

DC minimum dΦ/dt: 20 µVs/min

DC maximum dΦ/dt: 60 Vs/s

DC integrator drift: ±1 µVs/min, 0.0004% FS/min on 300 mVs range (100 kΩ input resistance constant temperature environment)

DC peak

DC peak resolution: 4¾ digits

DC peak integrator capacitance: 1 µF nominal

DC peak input resistance: 100 kΩ 10 kΩ

DC peak ranges: 300 mVs, 30 mVs, 30 mVs, 3 mVs

DC peak resolution: 0.01 mVs, 0.001 mVs, 0.001 mVs, 0.001 mVs

DC peak minimum reading: 0.05 mVs, 0.005 mVs, 0.005 mVs, 0.005 mVs

DC peak accuracy: Offset: ±100 µVs ±DC integrator drift; Gain: ±5% of reading (<10 Vs/s maximum rate of change)

DC peak maximum dF/dt: 60 Vs/s

DC peak update rate: Reduces update rate to ¼ normal

AC

AC resolution: 4¾ digits (reduced to 3¾ digits on the 30 µVs range)

AC integrator capacitance: 0.1 µF nominal

AC input resistance: 100 kΩ

AC ranges: 30 mVs, 3 mVs, 300 µVs, 30 µVs

AC resolution: 0.001 mVs, 0.0001 mVs, 0.01 µVs, 0.01 µVs

AC minimum rdg: 3.000 mVs, 0.3000 mVs, 30.00 µVs, 3.00 µVs

AC frequency response: 2 Hz to 50 kHz

AC accuracy: ±1% rdg ±10 µVs (10 Hz to 10 kHz sinusoidal); ±5% rdg ±10 µVs (2 Hz to 50 kHz sinusoidal)

AC integrator drift: NA

AC peak

AC peak resolution: 3¾ digits

AC peak integrator capacitance: 0.1 µF nominal

AC input resistance: 100 kΩ

AC peak ranges: 30 mVs, 3 mVs, 300 µVs

AC peak resolution: 0.01 mVs, 0.001 mVs, 1 µVs

AC minimum reading: 0.01 mVs, 0.001 mVs, 5 µVs

AC peak accuracy: ±5% rdg ±10 µVs (10 Hz to 10 kHz sinusoidal); ±10% rdg ±10 µVs (2 Hz to 50 kHz sinusoidal)

AC peak update rate: Reduces update rate to ¼ normal 

Front panel

Display type: 2-line × 20-character, vacuum fluorescent display

Display resolution: To ±5¾ digits

Display update rate: 5 rdg/s

Display units: Vs, MxN, WbN, VF, MxF, WbF, G, T, Wbcm, A, %

Units multipliers: p, n, µ, m, k, M, G

Annunciators: AC – AC input signal, DC – DC input signal, ∧ ∨ – Positive and negative peaks, R – Remote operation, :Alarm on

Keypad: 21 full travel keys

Interfaces

IEEE-488.2 capabilities: SH1, AH1, T5, L4, SR1, RL1, PP0, DC1, DT0, C0, E1

Serial interface: RS-232C electrical, DA-9 connector, 9600 BAUD

External reset type: Contact closure

Software support: LabVIEW™ driver

Alarms

Number: 2

Settings: High and low set point, Inside/Outside, Audible

Actuators: Display annunciator, beeper, relays

Relays

Number: 3

Contacts: Normally open (NO), normally closed (NC), and common (C)

Contact rating: 30 VDC at 2 A

Operation: Follow high, low alarms with third relay indicating no alarm state — can be operated manually

Connector: Detachable terminal block

Monitor analog output

Scale: ±3 V = ±FS on Vs range

Accuracy: ±1% of reading ±10 mV, (DC to 10 kHz); ±5% of reading ±10 mv, (10 kHz to 50 kHz)

Minimum load resistance: 1 kΩ

Connector: Detachable terminal block

Corrected analog output

Scale: User selected

Range: ±10 V

Resolution: 0.3 mV

Accuracy: ±2.5 mV

Minimum load resistance: 1 kΩ

Connector: Detachable terminal block/p>

General

Ambient temperature: 15 ºC to 35 ºC at rated accuracy; 5 ºC to 40 ºC with reduced accuracy

Power requirement: 100, 120, 220, 240 VAC, +5%, -10%, 50 or 60 Hz, 20 VA

Size: 216 mm W × 89 mm H × 318 mm D (8.5 in × 3.5 in × 12.5 in), half rack

Weight: 3 kg (6.6 lb)

Approval: CE mark, RoHS