The only handheld 3-axis magnetometers

The THM1176-TFM1186 family combines the performance of a professional instrument with the usability of a consumer USB device.

Its range goes from the nT to 20 T, DC to 1 kHz, with ±1% accuracy. It simultaneously measures all three axes of the magnetic field, so you get a true field strength reading no matter how you hold the probe. The entire instrument has been reduced to a cable with a few fat spots, which can plug directly into your PC or into a battery-powered handheld computer.

The result is the most compact, lightweight, low-power, go-anywhere and measure-anything magnetometer in the world.

The THM1176-TFM1186 family

The family includes sensors with different measurement ranges (100 µT to 20 T), resolutions (nT to mT), and sizes (0.5x2x42 to 30x32x70 mm). Choose the model best suited to your application – all are low-power, portable, 1 KHz bandwidth, and fully software compatible.

THM1176-HFC for high fields / compact

Featuring the same specifications as the THM1176-HF, but with a probe measuring only 0.5x2x42 mm, the THM1176-HFC enables 3-axis measurements where they were formerly impossible - for example between the rotor and stator of large rotating machinery. How much do you trust your computational model? Now you can measure it!

THM1176-LF for low fields

With an 8 mT range, ±20 µT accuracy, ±2 µT resolution and an active volume of 6x3.4x3 mm, the THM1176-LF is ideal for measuring environmental disturbances involving weak magnetic fields.

TFM1186 for high resolution

Outstanding noise characteristics make fluxgate magnetometers the instrument of choice for measuring small disturbances in the earth’s magnetic field. The Three-axis Fluxgate Magnetometer, TFM1186, has a range of ±100 µT and a resolution as low as 4 nT.

Desktop, Handheld and Duo Kits

If you just want to plug a magnetometer into the USB port of your computer, you need the Desktop Kit. The Handheld Kit, with its optional battery-operated handheld computer, takes the measurement from the lab bench to the field - although of course you can still use the instrument with your computer, too. If you need a single compact kit that can measure anything from µT to T, the Duo Kit includes both the THM1176-HF and THM1176-LF.

All kits include a zero gauss chamber and a CD with the manual, software for Windows and Mac, and all LabVIEW source code. The handheld kits include a carrying case with the handheld computer, charger, adapters and cables.

The computer interface complies with the USB, USBTMC/USB488, DFU, SCPI and VISA standards, and is compatible with Windows, Macintosh and Linux based computers.

Software that works

The supplied software displays the total field and its x, y, z components, while a "3D Compass" permits direct visualization of the vector direction. FFT, RMS or Peak-to-Peak computations can also be displayed, both numerically and graphically.

The user has full control of all measurement parameters, such as sample rate, trigger mode and data averaging. Visual and auditory alarms can be used to signal when measurements are out of bounds. Last but not least, measurements can be recorded to a file, played back in any of the available display modes, or transferred for further analysis using, for example, Excel or Matlab.

 

Born to map

Its 3-axis capability, compact form factor, small active volume and simple programmability make the THM1176-TFM1186 family the ideal magnetometers for field mapping. This applies to manual marking of the "5 Gauss line" as well as the systematic mapping of an entire volume with a sophisticated 3-axis field-mapping jig. Last but not least, it is now - for the first time - practical to build arrays of Hall sensors, simply by plugging a series of instruments into a USB hub. The extra cost of multiple sensors is often more than offset by the reduced mechanical complexity of the jig. Other important benefits include faster scanning, better positioning precision, and better reproducibility.

Details, details, details...

Attention to detail ensures that you get accurate measurements with a minimum of fuss. Auto ranging automatically selects the range you need, and auto temperature compensation minimizes the effect of temperature fluctuations. Different trigger modes are designed to support signal averaging, AC measurements, or synchronization with external events. Results can be displayed in T, mT, µT, nT, kG, G, mG or the equivalent NMR resonant frequency – as appropriate for the particular model. The zero offset can be easily determined with the zero-gauss chamber included, and is stored in flash memory. The firmware can be upgraded by the user. Even the signal cable between the sensor and the electronics is specially designed to minimize induction effects.

Download data sheets, manuals, software and price list

• THM1176 Brochure (English, A4 or US format; Spanish)
• THM1176-LF Data Sheet (A4 or US format)
• THM1176-HFC Data Sheet (A4 or US format)
• TFM1186 Data Sheet (A4 or US format)
• THM1176 User Manual
• THM7025 User Manual (English, German)
• THM1176 Desktop Kit software v4.0.1 (36 MB). Requires the v3.0 Firmware Update, below. See installation instructions in the News article "THM1176 update: AC field analysis and more, for free!".
• THM1176 Handheld Kit software v4.0.1 (37 MB). Requires the v3.0 Firmware Update, below. See installation instructions in the News article "THM1176 update: AC field analysis and more, for free!". For licensing reasons, the Handheld Kit is password-protected; send us an e-mail with your instrument's serial number, and we will send you the password.
• THM1176 Firmware Update v3.0. See installation instructions in the News article "THM1176 update: AC field analysis and more, for free!"
• "A New Generation of Hall Magnetometers - Enabling Technologies" (published in Magnetics Business & Technology, June/July 2008)
• Price List

 

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