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Whats AppMeasure specific resistances quickly and accurately
Nittoseiko Analytech resistivity meters offer you innovative technologies for precise measurement of specific resistance and easy calculation of the resistivity correction factor. With the Hiresta-UX, Loresta-GX and Loresta-AX models, both surface resistivity and volume resistivity can be accurately measured. In addition, the PD-600 powder measuring system enables the determination of the physical properties of powdery substances by measuring the specific resistance.
For over 40 years, Nittoseiko Analytech measuring devices have been characterized by their outstanding quality, user-friendly handling and precise measurement results. They are a reliable choice for users who demand the highest levels of accuracy and reliability.
Measuring instruments for measuring specific resistance
Hiresta UX
For measuring semiconductors and non-conductors in high-resistance range of of 103 - 1014 Ω
Loresta GX II
For measuring conductors and semiconductors in low-resistance range of 10-4 - 107 Ω
Loresta FX
Mobile measurements of conductors and semiconductors in low-resistance range of 10-2 to 106 Ω
Powder measuring device – Powder Measuring System PD-600
Powder measuring device PD-600
Determination of the specific resistance of powders under controlled pressure up to 20 kN.
Information on electrical quantities and measurement methods
Every material has a unique specific resistance
Specific electrical quantities are of great importance in industry and technology. They serve the Characterization of different materials and their division into certain categories, such as Insulators, semiconductors or conductors. These sizes are independent of the shape and dimensions of the object in question and therefore describe a clear quality feature.
With the devices Hiresta UX, Loresta-GX II and Lorsta-FX an accurate measurement of the specific surface resistance and volume resistance is possible. Hiresta series serves the high-resistance range (103-1014Ω), the Loresta series the low-resistance (10-4-107Ω). These systems are supplemented by the Powder Resistivity System PD-600 for measuring the resistivity of powder.
Volume resistance
The Volume resistance (Ω・cm) is the resistance per unit volume and goes by various names depending on the scientific area of application. For example, the specific volume resistance in materials science, the specific resistance in electrical engineering, the resistance in physics, etc. This physical quantity is specific for a substance (listed in scientific tables) and serves as absolute measure of the resistivity of many materials. More about volume resistance in our FAQ >>
Surface resistance
The Surface resistance whereas (Ω／□，Ω／sq.) is the resistance per unit area, also referred to as plate resistance and finds Application in the area of coating, insulation, etc.
More about surface resistance in our FAQ >>
4-point and ring electrode measurement methods
These can be determined using two different measuring methods: The 4-point measurement method and the Ring electrode measurement method.
Both methods are common methods for object characterization. The 4 point measurement method was first described in 1954 by LB Valdes for measuring semiconductors. In 1957 his notes were expanded by FM Smits with regard to the correction factors for determining the specific quantities. This was followed by further additions to various special cases (e.g. semicircular patterns).
In these works, highly idealized objects were basically described and measured. Mostly rectangular or circular patterns. The measuring position was preferably in the middle of the sample or in places that allow the electrical quantity to be easily corrected.
Through the 4-pole measuring head or the ring electrode measuring head of the measuring devices Line and plug connection resistances as well as contact resistances eliminated. In contrast to the widespread 2-pole measurement, significantly more precise resistance measurements are achieved. More information in our FAQ >>
Correction factor
For these idealized objects a general correction factor developed with which the specific variables can be determined from the electrical resistance. This correction is necessary because the electric field changes depending on the geometry of the sample or measuring position.
The Resistivity measuring devices from Nittoseiko Analytech basically work on Basis of the two measurement methods, but with essential more complex correction factors, which allows correction of specific sizes on samples of different dimensions, with freely selectable measuring positions. This allows versatile use in different areas of industry.
Measurements with the Hiresta measuring devices
High-resistance measuring range of 103 - 1014 Ω x cm
Technical filter fabrics
Measurement of the insulating properties of the textile support structure
URS measuring head RMH214
Ceramics
Measuring the electrical insulation capacity of functional ceramics (automotive industry)
UR-SS measuring head RMH215
Coated aluminum / copper plates
Measurement of the insulating coating
URS measuring head RMH214
Silicone Sealant
Measurement of insulating properties
URS measuring head RMH214
Foam panels
Measurement of insulating properties
URS measuring head RMH214 +
RMJ-360 measuring head holder
Plastic parts
Measurement of insulating properties for powder coating (automotive industry)
UA measuring head RMH211
Measurements with the Loresta measuring devices
Low-resistance measuring range of 10-4 - 107 Ω x cm
ABS plastic with aluminum coating
Measurement of electrical resistivity
ASP measuring head
Carbon fiber fabric
Measurement of electrical resistivity
ASP measuring head
Coated aluminum foils
Measurement of electrical resistivity for different coatings
ASP measuring head
Printed conductor tracks
Measurement of the electrical resistivity of printed electronic conductor tracks on textile fabrics
LSP measuring head
PVC compounds
Measurement of electrical resistivity
ASP measuring head
PU adhesive
Measuring the electrical resistivity of a cured polyurethane adhesive
LSP measuring head
Measurements with the powder measuring device PD-600
In conjunction with the Hiresta-UX: measuring range of 103 - 1014 Ω x cm
In conjunction with the Loresta-GX: measuring range of 10-4 - 107 Ω x cm
soot
Measurement with Loresta-GX
Thermoplastic compound
Measurement with Loresta-GX
Dust
Measurement with Hiresta-GX II
graphite
Measurement with Loresta-GX
Insulating foam
Measurement with Loresta-GX
titanium oxide
Measurement with Loresta-GX
silicon carbide
Measurement with Loresta-GX
N&H Technology is the one exclusive representatives from Nittoseiko Analytech im German-speaking countries (DACH), the BENELUX region and Great Britain (UK). Our comprehensive product range offers high-precision resistivity measuring devices that can measure the specific surface and volume resistance as well as the physical properties of powdery substances. With over 40 years of experience, Nittoseiko Analytech stands for first-class quality, easy handling and precise measurement results.
Comprehensive service
Our services include advance presentations and demonstrations of the devices in our laboratory in Willich, Germany, or directly at your site. We offer advice and needs assessments to identify your specific requirements. In addition, we ensure the commissioning and training of the devices on site to ensure a smooth start. We offer maintenance and service contracts to ensure the long-term reliability and performance of your devices. We also carry out the measurement of your materials and powders as a service and provide you with detailed test reports.
Our services:
- Pre-presentation and demonstration in our laboratory in Willich, Germany or directly at your location
- Advice and needs analysisto identify your specific requirements
- Commissioning and training of the devices on site to ensure a smooth start
- Maintenance and service contracts for long-term reliability and performance of your devices
- Measuring your materials and powders as a service, including detailed test reports
Contact Contact us to find out more about our tailor-made services and receive an individual offer.
We measure your sample
We offer you the opportunity to use the measurement of your material samples as a service. Our experienced team ensures that each sample is handled with the utmost care and precision.
For each measurement carried out, you will receive a detailed test report that provides you with detailed information and analyzes of your material samples. This report includes all relevant data and, if desired, can be presented in clear diagrams showing the electrical resistivity depending on the pressing pressure.
The pricing for our service is transparent and is based on the number of samples to be measured. This gives you the opportunity to benefit flexibly and cost-effectively from our high-quality measurement services.
If you are interested, please send us an email info@nh-instruments.de and we will make you an individual offer.
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