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The Three-axis Hall Magnetometer is used to measure the magnetic field (flux density). Its unique, extraordinarily compact design allows it to be used as a portable instrument or directly connected to a PC.

The total magnetic flux density is provided no matter the orientation of the probe, which greatly facilitates many measurement tasks such as field mapping. Outstanding features are as follows:

  • Three axes
    Simultaneous measurTHMement of all three axes of the magnetic field provides the total field, no matter the orientation of the probe.
  • Microscopic field sensitive volume
    The High Field sensor volume of only 150 x 150 x 10 µm3 provides excellent localization and a self-consistent measurement of the three axes even in highly inhomogeneous fields. The Low Field sensor volume is 6 x 3.4 x 10 mm³.
  • Magnetic fields up to 20 T
    The High Field probe allows measuring even very strong fields as far as 20 Tesla. The standard calibration covers the range up to 3 T. The Low Field probe measures up to 8 mT with a resolution of 2 µT.
  • Bandwidth of DC to 1 kHz
    The 1 kHz bandwidth allows measuring AC fields generated, for example, by transformers and motors.
  • Graphical results display
    Magnetic flux density vs. time can be displayed as a graph. Measurement data can also be recorded to file.

Key Features

  • PC control software included for Windows and Mac
  • USB probe interface, bus–powered
  • Easy operation by PDA touch screen or MS-Windows based PC software (all included with the PDA version)
  • Frequency range from DC to 1 kHz
  • Small sized field sensitive point for accurate measurements in high gradient fields
  • High Field probe (20 Tesla) and Low Field probe (8 mT) versions
  • Non-directional measurement using an isotropic 3-axis HALL probe

Applications

  • USB probe interface, bus–powered
  • Easy operation by PDA touch screen or MS-Windows based PC software (all included with the PDA version)
  • Frequency range from DC to 1 kHz
  • Small sized field sensitive point for accurate measurements in high gradient fields
  • High Field probe (20 Tesla) and Low Field probe (8 mT) versions
  • Non-directional measurement using an isotropic 3-axis HALL probe
  • PC control software included for Windows and Mac

Technical Specifications

Software Functions: - Numerical and graphical display of data (including total field)\n- Range and units selection\n- Hold and Maximum\n- Record to file and recall
Record File Format: ASCII tab delimited; compatible with Handheld file format
Ranges: 100 mT, 500 mT, 3T, 20T (automatic or manual ranging)
Data Output: - Bx, By, Bz (ASCII or binary, single point or array, calibrated or not)\n- Temperature (uncalibrated)\n- Time stamp (10ms resolution)
Units: Magnetic flux density in T, mT, G, kG, MHz p (NMR frequency of proton)
Sample rate:\n- Immediate trigger (default)\n- Timed trigger\n- Bus trigger (via USB) Approx. 12 kHz (free-running, until internal buffer is full)\n0.36 Hz to 2.048 kHz (timer resolution of at least 0.24 ‰; continuous read-out
Bandwith: DC to 1 kHz
Resolution:\n- No averaging\n- Averaging 100 samples 100 mT range (300 µT, 30, 30 µT), 500 mT range (500 µT, 50 µT), 3 T range (3 mT, 300 µT), 20 T range (15 mT, 1.5 mT)
Accuracy: The greater of ±1% of reading or specified resolution\n20 T range specified up to 3 T
User offset correction: To be performed before each series of measurements, in Zero Gauss Chamber supplied
Interface: USB 2.0, full speed (12 Mbps)
Class / USB Driver: USBTMC (USB Test & Measurement Class) / USB488\nDFU (Device Firmware Upgrade)
Protocol: IEEE 488.2, SCPI (Standard Commands for Programmable Instruments)
Connector: USB Type A
Power: USB bus-powered, 4.3V to 5.25V\n35 mA min (idle, power-saver on), 90 mA max
Wake-up time from power-saver: 100 ms
PDA Type: Windows Mobile® 5.0 with USB host interface
PDA Size: (127 x 75 x 21) mm
PDA Weight: 230 g with 2600 mAh battery, stylus and USB adaptor cable
Display: 64K colour TFT LCD, 3.5\", 240 x 320 pixels
Input Device: Stylus or fingertip
Connectors: - Power jack\n- 2.5mm audio headset jack\n- 26 pin connector for ActiveSync, USB 1.1 host and USB 2.0 client\n- CompactFlash and SDIO expansion
Audio: Built-in microphone and speaker
Memory: 128 MB SDRAM, 256 MB NAND Flash
Wireless LAN: IEEE 802.11 b/g; internal antenna
Bluetooth: V2.0 + EDR class 1
Battery Life: 6 hours min
Record file format: ASCII tab delimited
Pre-loaded software: - Acquisition software (same functionality as desktop software)\n- Word Mobile, Excel Mobile, PowerPoint Mobile\n- Outlook Mobile, IE Mobile,
Probe\n - Operating temperature\n - Storage temperature\n - Operating magnetic field 0°C to +40°C\n-20°C to +60°C\n3 T max. for the instrument electronics\n(located within the probe cable at 2m distance from the sensor)
PDA (THM1176-PDA only)\n - Operating temperature\n - Operating magnetic field 0°C to +50°C\n1 T max. The PDA may experience forces as high as 50 N.\nNote: The touch screen of the PDA will cease to function. The power of
Warranty: 2 years
Recommended calibration interval: 18 months (3-Axis Hall Probe only)
Certification: CE approved
Maintenance: Firmware upgradeable by end user
Country of Origin Switzerland
Size:\n- Instrument electronics\n- Probe with housing\n- Probe without housing 76 x 22.5 x 14 mm3\n113 x 16 x 10 mm3
Stationary mounting point: For M2.5 screw (not included). Note: to avoid breaking the mounting point, use a spacer and\ndo not over-tighten the screw.
Weight: 150 g
Size of Field Sensitive Point: 150 µm x 150 µm x 10 µm