S460+ – Microhmmeter (2A DLRO) product image 1

S460+ – Microhmmeter (2A DLRO) product image 2

S460+ – Microhmmeter (2A DLRO) product image 3

S460+ – Microhmmeter (2A DLRO) image thumbnail 1

S460+ – Microhmmeter (2A DLRO)

4-wire method for low resistance measurements
Maximum test current: 2 A
Resistance range: 0.01 mΩ to 100 kΩ
3.5-inch colour LCD
Data hold and storage for 900 records
Adjustable resistance alarm threshold
Wire length calculated from sample and total wire resistance

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Product Description

The S460+ is a portable digital low resistance ohmmeter for checking bonding conductors, electrical contacts, busbar joints and welded connections. It uses a four-wire measurement method, with a maximum test current of 2 A and a resistance range of 0.01 mΩ to 100 kΩ.

A colour display, data hold, 900-record storage and an adjustable resistance alarm support recording and reviewing measurements. Its wire-length function uses the resistance of a known-length sample and the total wire resistance to calculate the wire length.

Technical FAQ

Does it always apply a 2 A test current?

The source specifies a maximum test current of 2 A. This should not be interpreted as a guaranteed 2 A output throughout the complete resistance range.

What is the four-wire connection?

Separate current and voltage connections are used: I+ and I− for test current, and V+ and V− for voltage sensing. The manual shows these connections at the two ends of the conductor under test.

How does the wire-length function work?

A known-length sample of the wire is measured first. The instrument then measures the total wire resistance and calculates length from the sample and total resistance measurements.

Does S460+ automatically discharge an inductive test object?

No. The manual states that the instrument has no discharge function. For an inductive object such as a transformer winding, discharge using an appropriate external instrument must be completed before the test leads are removed.