Aim-TTi BS407 Precision Milli Ohmmeter

Aim-TTI BS407 Ohmmeter

(4-Wire, 1µohm to 20kohm)

The Aim-TTi BS407 is an instrument which is fully optimised for the task of accurate measurement of low resistances with a best resolution of 1µΩ. It has applications beyond the testing of components such as measuring the resistance of motor or transformer windings, the properties of materials, the thickness of plates, the security of pipework joints or wiring installations and many others. 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