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                                                                                                    1. Home
                                                                                                    2. Test & Measurement
                                                                                                    3. Electrical & Electronic Testing
                                                                                                    4. Resistivity Meters
                                                                                                    Print Page

                                                                                                    BS407

                                                                                                    Ohmmeter, 4-Wire, 1µohm to 20kohm, 1 µohm, 250 mA, ± 0.1%, 88 mm

                                                                                                    AIM-TTI INSTRUMENTS BS407
                                                                                                    Image is for illustrative purposes only. Please refer to product description.
                                                                                                    ManufacturerAIM-TTI INSTRUMENTS
                                                                                                    Manufacturer Part NoBS407
                                                                                                    Order Code3812364
                                                                                                    Also Known AsGTIN UPC EAN: 5060584590613
                                                                                                    Technical Datasheet

                                                                                                    Data Sheet

                                                                                                    See all Technical Docs
                                                                                                    No Longer Manufactured

                                                                                                    Product Information

                                                                                                    ManufacturerAIM-TTI INSTRUMENTS
                                                                                                    Manufacturer Part NoBS407
                                                                                                    Order Code3812364
                                                                                                    Also Known AsGTIN UPC EAN: 5060584590613
                                                                                                    Technical Datasheet

                                                                                                    Data Sheet

                                                                                                    Wire Connection4-Wire
                                                                                                    Resistance Measurement Range1µohm to 20kohm
                                                                                                    Resolution (ohm)1µohm
                                                                                                    Test Current250mA
                                                                                                    Accuracy± 0.1%
                                                                                                    External Height88mm
                                                                                                    External Width220mm
                                                                                                    External Depth230mm
                                                                                                    Weight1.3kg
                                                                                                    Product Range-
                                                                                                    SVHCNo SVHC (21-Jan-2025)

                                                                                                    Product Overview

                                                                                                    The BS407 is an instrument which is fully optimised for the task of accurate measurement of low resistances with a best resolution of 1µΩ. Most multimeters offer a best resolution which is at least one thousand poorer than this. A very high resolution multimeter may attempt to resolve fairly low resistances, but it does so by resolving extremely low voltages (typically one nano-volt per micro-ohm), making it subject to severe errors from thermal emf effects and noise. In contrast, the BS407 generates sufficient test voltage across the unknown resistance to combat noise and reduce thermal emf effects to manageable levels. Current reversal can then be used to eliminate any remaining thermal offset.

                                                                                                    • High basic accuracy of 0.1%
                                                                                                    • Wide measurement range of 1µΩ to 20kΩ
                                                                                                    • Current reversal switch for detecting thermal EMF effects
                                                                                                    • Current diversion switch for easy zero setting
                                                                                                    • Four terminal measurement using Kelvin clip leads
                                                                                                    • Battery operation with built-in charger
                                                                                                    • Switchable 20mV clamp for 'dry circuit' testing

                                                                                                    Applications

                                                                                                    Sensing & Instrumentation, Signal Processing, Test & Measurement

                                                                                                    Contents

                                                                                                    Kelvin Test Clip Leads, Operating Manual & IEC Mains Lead.

                                                                                                    Notes

                                                                                                    In addition, we have calibration services for this product (Europe Only). Visit our calibration service page to see details of what options are available.

                                                                                                    Technical Specifications

                                                                                                    Wire Connection

                                                                                                    4-Wire

                                                                                                    Resolution (ohm)

                                                                                                    1µohm

                                                                                                    Accuracy

                                                                                                    ± 0.1%

                                                                                                    External Width

                                                                                                    220mm

                                                                                                    Weight

                                                                                                    1.3kg

                                                                                                    SVHC

                                                                                                    No SVHC (21-Jan-2025)

                                                                                                    Resistance Measurement Range

                                                                                                    1µohm to 20kohm

                                                                                                    Test Current

                                                                                                    250mA

                                                                                                    External Height

                                                                                                    88mm

                                                                                                    External Depth

                                                                                                    230mm

                                                                                                    Product Range

                                                                                                    -

                                                                                                    Technical Docs (2)

                                                                                                    Operating Instructions EN

                                                                                                    Technical Data Sheet EN

                                                                                                    Legislation and Environmental

                                                                                                    Country of Origin:
                                                                                                    Country in which last significant manufacturing process was carried outCountry of Origin:
                                                                                                    Great Britain
                                                                                                    Country in which last significant manufacturing process was carried out
                                                                                                    Tariff No:90303320
                                                                                                    US ECCN:3A992.a
                                                                                                    EU ECCN:NLR
                                                                                                    RoHS Compliant:Yes

                                                                                                    RoHS

                                                                                                    RoHS Phthalates Compliant:Yes

                                                                                                    RoHS

                                                                                                    SVHC:No SVHC (21-Jan-2025)
                                                                                                    Download Product Compliance Certificate

                                                                                                    Product Compliance Certificate

                                                                                                    Weight (kg):1.5
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