Introduction - TENTECH MO2Ke Manual De Uso

1. Introduction

The MO-2Ke low resistance ohmmeter is a portable, microprocessor
controlled instrument used to accurately measure resistances of contacts,
switches, transformer and motor windings, etc, using test currents from
1 mA up to 1 A.
It uses the Kelvin-type (4-terminals) measurement principle, thus
eliminating errors caused by the test leads and contact resistances.
Resistance readings are shown in the alphanumeric display with up to a
4 ½ digit-resolution. It allows to measure resistances of up to 2 kΩ Ω Ω Ω , with
resolution of 0.01 mΩ Ω Ω Ω .
Measurements accuracy is guaranteed by the state-of-the-art system for
signal-amplification, offset-free and with long-term stability.
The equipment has a serial output (RS232) that allows collecting
measured values in a printer, notebook, palm-top computer or any data
logger in order to register the tests performed.
The HOLD function keeps in the display the value measured at a certain
time-point.
Test current may be adjusted by the operator in each range and their
values are displayed in analogue form (bar-graph), making it easy to
measure resistances with a significant inductive component. The open
circuit output voltage is up to 10 V, depending on the selected test
current, reducing the stabilization time for the test current when highly
inductive elements (specially transformers windings) are measured. The
measurement circuit has an effective protection against voltage peaks
originated by those inductances.
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