User`s guide

2 Making Measurements
Using Smart Ω for Resistance Measurements
58 U1273A/U1273AX User’s Guide
Figure 2-17 Smart Ω (with bias voltage) display
Figure 2-18 Smart Ω (with leakage current) display
Use Smart Ω to measure the resistance of a thermocouple sensor
It is useful to measure the resistance of a thermocouple
temperature sensor. The thermovoltage is proportional to the
temperature and the impact of the resistance measurement.
Using the Smart Ω function will help you achieve precise
readings regardless of the temperature.
Use Smart Ω to measure leakage current
Use the Smart Ω function to measure leakage current or
reverse current for junction diodes. Such leakage currents
are negligible and are usually measured in units of μA or
nA. Instead of having to source a high- precision multimeter
with a 1 nA or 0.1 nA accuracy or a precision shunt, you
can measure the leakage current using the Smart Ω function
with just a resistor from 100 kΩ to 300 kΩ.