Kelvin clamps

Essential prerequisite for high-precise resistance measurements.

Kelvin clamps are used for perfect contactings in 4-wire technology. To be able to even measure smallest resistances in the uΩ- and mΩ-range, the 4-wire measurement is a mandatory precondition. 

The 4-wire measurement offers the benefit, that the measuring lead´s resistance and the clamping point´s contact resistance are eliminated.  To do so, per each clamping point two measuring leads are necessary. As a resistance measurement is performed between two connections (between the clamping points), four measuring leads are needed in total. That is why it is called "4-wire measurement".

Further details regarding the 4-wire measurement are to be found on our homepage under SchleichPedia.

Our Kelvin clamp´s special design (4-wire clamps) assures a high reliability, solid clamping and little wear even under rough test conditions.

Three perfectly-matched sizes.

Kelvin clamps

• three sizes
  
  • small
  • medium
  • large
• firmly-connected measuring leads
• pluggable measuring leads in the handle

Technology at a glance.

Kelvin clamp small 4007209

• Opening width: 10 mm
• Width contact surface: 6 mm
• For wire diameters: 0,3-8 mm
• Contact pressure: 20 N
• Weight without measuring lead: 40 g
• Dimensions: W13 x H35 x D90 mm
• Lead length: 2,5 m

Kelvin clamp medium 4007212

• Opening width: 20 mm
• Width contact surface: 12 mm
• For wire diameters: 0,3-15 mm
• Contact pressure: 30 N
• Weight without measuring lead: 250 g
• Dimensions: W20 x H41 x D165 mm
• Lead length: 2,5 m

Kelvin clamp large 4007168

• Opening width: 35 mm
• Width contact surface: 20 mm
• For wire diameters: 0,5-40 mm
• Contact pressure: 100 N
• Weight without measuring lead: 600 g
• Dimensions: W25 x H95 x D250 mm
• Lead length: 2,5 m

Threaded bolts- Kelvin clamp 4000437

• for bolt diameter 3-4 mm
• Lead length: 2,5 m

Threaded bolts- Kelvin clamp 4000438

• for bolt diameter 4-5 mm
• Lead length: 2,5 m

Threaded bolts- Kelvin clamp  4000439

• for bolt diameter 5-6 mm
• Lead length: 2,5 m