Omega RD-MV100 Series User Manual page 21

If the signal to be measured is a DC current, a shunt resistance is attached to the input
terminal to convert the current signal to a voltage signal. The input mode is set to "DC
voltage" in this case. For the various types of shunt resistors and the procedure related
to setting the current input, see section 5.1.
Input Range and Measurable Range
You can select the "Input range" that is appropriate for the input signal for "DC voltage,"
"Thermocouple," "RTD," and "ON/OFF input." (For example, R, S, B, K, E, J, T, N, W, L,
and U are available input ranges for "Thermocouple.") For each "Input range," a
measurable range is defined (for example, the measurable range for /R of
"Thermocouple" is "0.0°C to 1760°C"). For details, see section 14.1.
Burnout
When measuring temperature using a thermocouple and the thermocouple burns out,
you can specify the measurement result to be set to positive over range or negative over
range. Burnout can be set on each measurement channel. The initial setting is set so
that burnout is not indicated. For the setting procedure, see section 5.9.
*1 Positive over range is a condition in which the input signal is over the upper limit of
the measurable range. The measured value is indicated as "+
*2 Negative over range is a condition in which the input signal is below the lower limit of
the measurable range. The measured value is indicated as "–
Reference Junction Compensation (RJC)
When measuring the temperature using a thermocouple, the reference junction
compensation can be used. You can select whether to use the reference junction
compensation provided by the recorder or external reference junction compensation. If
you are using external reference junction compensation, you will also set the reference
voltage. The initial setting is set so that the reference junction compensation provided by
the recorder is used. For the setting procedure, see section 5.9.
Filter and Moving Average
The filter and moving average are used to suppress the effects of noise that is riding on
the signal. Filtering is provided on the RD-MV102 and RD-MV104. Moving average is
provided on the RD-MV106, and RD-MV112. The filter or moving average can be set on
each channel. For the setting procedure, see section 5.8.
Filter function (RD-MV102 and RD-MV104)
Suppresses the effects of noise above the frequency determined by the specified time
constant. The time constant can be set to 2 s, 5 s, or 10 s. The filter is initially turned
OFF.
Effects of using filter (Output response fot a step input)
Input
63.2% of the output value
Output response curve (when using the filter)
2, 5, 10 s (time constant, the time it takes to reach 63.2% of the output value)
1.2 Functions of the Input Section
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