User`s guide

Chapter 2 Front Panel Operations RIGOL
M300 User’s Guide
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variation information. Thermistor is especially sensitive to temperature but its
temperature measurement range is small and is more suitable for
measurements with relatively small temperature variations.
Thermistor resistance is usually very high. Therefor, the 2-wire resistance
method is preferred when measuring the resistance of the thermistor. The
internal software conversion program converts the resistance measured to the
corresponding temperature.
 Model
After setting the temperature sensor type to THER, use the up/down
direction keys to select Model and use the left/right direction keys to select
the desired model (2.2kΩ, 3kΩ, 5kΩ, 10kΩ or 30kΩ).
 Precision
After setting the temperature sensor type to THER, use the up/down
direction keys to select Precision and use the left/right direction keys to
select “1”, “0.1” or “0.01”.
5 Use RTD to measure temperature
RTD measures the temperature on the basis that the resistance of the measured
substance changes with temperature. It features in high measurement accuracy
and stable performance.
The instrument can measure the resistance using 2-wire (RTD) or 4-wire (RTD
4W) method. The internal software conversion program converts the resistance
measured to the corresponding temperature. For the reference table about each
kind of RTD, please refer to the related standards.
 R0
After setting the temperature sensor type to RTD or RTD 4W, use the
up/down direction keys to select R0 and use the numeric keyboard to input
the desired resistance. The range is from 49 Ω to 2100 Ω and the default is
100 Ω.
 ALPHA
Temperature coefficient.
After setting the temperature sensor type to RTD or RTD 4W, use the
up/down direction keys to select ALPHA and use the left/right direction
keys to select the desired coefficient (0.00385, 0.00389, 0.00391 or
0.00392).
 Precision
After setting the temperature sensor type to RTD or RTD 4W, use the
up/down direction keys to select Precision and use the left/right direction
keys to select “1”, “0.1” or “0.01”.