Hioki L2140 Offers

The red lead features a straight, spring-loaded pogo-pin probe tip (tip diameter Ø 2.9 mm) that provides stable contact on screws, busbars, or metallic terminals. The black lead is equipped with a large alligator clip that securely grips objects up to Ø 30 mm, allowing reliable connection to grounding points or wide conductors. 

Each lead pair is configured for four-terminal measurement, with separate SOURCE and SENSE lines to minimize the influence of lead resistance and maintain measurement consistency even when measuring over longer distances. The leads are not physically joined, allowing flexible placement over several meters, which suits DC resistance measurement but not AC impedance testing, where parallel cable routing is required to reduce inductive effects. 

Rated for 60 V DC, the L2140 provides a sufficient safety margin for precision DC resistance testing. Although originally designed for the RM3548-50, it is also compatible with the earlier HIOKI RM3548 and with other instruments featuring compatible connectors. Its long and flexible design also makes it suitable for test bench applications, for example with resistance meters such as the HIOKI RM3545A.

Features

• Type: Four-terminal test lead set, red/black
• Maximum rated voltage: 60 V DC 
• Measurement type: DC resistance only (not suitable for AC impedance measurement) 
• Red lead: 1.84 m, pogo-pin probe tip Ø 2.9 mm 
• Black lead: 3.16 m, alligator clip for objects up to Ø 30 mm 
• Contact pressure (pogo pin): Approx. 190 g initial, 250 g at 1 mm stroke
• Construction: Four-terminal configuration; red and black leads not physically joined 
• Compatible instruments: HIOKI RM3548-50, RM3548, and other DC four-terminal resistance meters