Metrology
To provide reliable measurements, magnetometers used in industry need to be calibrated regularly. The calibrationDuring calibration, the instrument reading is compared to one or more references to verify its accuracy. The references themselves need... More may be performed by the manufacturer or by a commercial calibration laboratoryA laboratory – either commercial or governmental – that calibrates the instruments used in industry. Magnetometry is so specialized that... More. In either case, the calibrationDuring calibration, the instrument reading is compared to one or more references to verify its accuracy. The references themselves need... More requires a standardA standard is the internationally agreed-upon physical representation of a unit. For example, a caesium clock is the standard for... More, which is usually established and maintained by a national standards laboratoryUsually a government laboratory whose responsibility it is to maintain and develop standards, in cooperation with international standards bodies. More, in collaboration with international standards committees.
NMR magnetometers: a secondary standard of primary importance
A physical magnetic standardA standard is the internationally agreed-upon physical representation of a unit. For example, a caesium clock is the standard for... More – i.e. a high-precision standardized magnet – is too expensive for widespread use. Instead, very precise time standards and the precise measurement of a physical constant called the gyromagnetic ratioIn NMR or ESR, the ratio of the resonant frequency to magnetic flux density. Varies from one nucleus to the... More permit NMRNuclear Magnetic Resonance. A resonance phenomenon seen when you irradiate a sample in a magnetic field with an RF field.... More magnetometers to act as a convenient secondary standardA standard is the internationally agreed-upon physical representation of a unit. For example, a caesium clock is the standard for... More. Now, the field generated by a relatively inexpensive reference magnetA magnet used for calibrating a magnetometer. Reference magnets are often controlled or even regulated by an NMR teslameter. More can be measured with an NMRNuclear Magnetic Resonance. A resonance phenomenon seen when you irradiate a sample in a magnetic field with an RF field.... More teslameterSee magnetometer. More, and then used to calibrate other magnetometers.
Metrolab: the standard of the standards
As the pre-eminent manufacturer of commercial NMRNuclear Magnetic Resonance. A resonance phenomenon seen when you irradiate a sample in a magnetic field with an RF field.... More magnetometers, Metrolab enjoys a privileged position in the calibrationDuring calibration, the instrument reading is compared to one or more references to verify its accuracy. The references themselves need... More and standards laboratories. PrecisionPrecision is how closely multiple measurements will be clustered. Also called reproducibility or repeatability. In everyday speech, often confused with... More, measurement rangeThe range of a probe is defined by the minimum and maximum field strength it can measure. On an instrument,... More, ease of use and reliability are Metrolab trademarks that are familiar to nearly every magnetic calibrationDuring calibration, the instrument reading is compared to one or more references to verify its accuracy. The references themselves need... More facility.
Do it yourself calibration
Although reference magnets can be relatively inexpensive, they are usually still large and specialized pieces of equipment. For this reason, magnetometerAn instrument to measure magnetic flux density (B) or magnetic field intensity (H). More calibrationDuring calibration, the instrument reading is compared to one or more references to verify its accuracy. The references themselves need... More is performed in only a few specialized facilities, which leads to expense and logistical overhead when many instruments need to be calibrated.
For calibrationDuring calibration, the instrument reading is compared to one or more references to verify its accuracy. The references themselves need... More at specific field strengths, Metrolab offers a solution: a line of ultra-compact permanent magnets with an opening large enough for an NMRNuclear Magnetic Resonance. A resonance phenomenon seen when you irradiate a sample in a magnetic field with an RF field.... More probeThe actual sensor that is placed in the magnetic field. The NMR probe contains the NMR sample; the Hall probe... More as well as the instrument to be calibrated. Using a built-in correction coil, the field can even be regulated to NMRNuclear Magnetic Resonance. A resonance phenomenon seen when you irradiate a sample in a magnetic field with an RF field.... More precisionPrecision is how closely multiple measurements will be clustered. Also called reproducibility or repeatability. In everyday speech, often confused with... More. If you received our magnet / teslameterSee magnetometer. More kit in the morning mail, you could be calibrating before lunch!
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PM1055
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Technology
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NMR / EPR
Metrolab is espacially know for their precisionPrecision is how closely multiple measurements will be clustered. Also called reproducibility or repeatability. In everyday speech, often confused with... More NMRNuclear Magnetic Resonance. A resonance phenomenon seen when you irradiate a sample in a magnetic field with an RF field.... More teslameters
