Yokogawa µR20000 - Manual (Page 230)

IM 04P02B01-01E
12-2
Item Specfcatons
Input type Floating unbalanced input.
Isolation between channels (except, b terminal is shared for RTD input).
Burnout Detection of TC Can be set for each channel.
Upscale/Downscale switchable.
Input Type Operatng Condtons
TC input
2 kΩ or less: normal, 10 MΩ or more: burnout, detection current: approx. 10 µA
1-5V input 0.2 V or less: burnout
RJC of TC input Set whether to use the recorder RJC function or an external RJC function for each channel.
Set the compensation voltage when using an external RJC function.
Compensation voltage range: –20000 µV to 20000 µV.
A/D converter
Resolution 16 bits
Integration time Pen model: Selectable from 20 ms (50 Hz), 16.7 ms (60 Hz), and Auto (auto switch between 20 ms
and 16.7 ms according to the power supply frequency).
Dot model: Selectable from 20 ms (50 Hz), 16.7 ms (60 Hz), 100 ms and Auto (auto switch
between 20 ms and 16.7 ms according to the power supply frequency).
Filter function (pen model) Filter ON/OFF switchable for each channel.
Time constant selectable from 2, 5, and 10 s.
Moving average function
(dot model) Moving average ON/OFF switchable for each channel.
The number of samples of the moving average is selectable between 2 and 16.
Input Computaton (Standard Functon)
Item Specfcatons
Delta computation Calculates the difference between two channel inputs using the following equation.
Delta = (the input value of the channel set to delta computation) – (the input value of the
reference channel)
where (reference channel number) < (channel number set to delta computation).
Computable input type: DC voltage, TC, and RTD. The channel set to delta computation and the
reference channel is set to the same range type.
Linear scaling Scales the input value to a value with a unit suitable for the application.
Computable input type: DC voltage, TC, RTD, DI
Value after scaling
Mantissa: –20000 to 30000
Decimal position: Can be set arbitrarily
Unit: Can be set arbitrarily (up to 6 characters)
Displayable and printable range
–19999 to 31500
Computation on the 1-5V input
Linear scaling Linearly scales the 1-5V signal.
Value after scaling: Same as linear scaling.
Displayable and printable range: Same as linear scaling.
Low-cut function Sets values below 0% of the recording span to the leftmost value of the scale. The leftmost value of
scale must be less than the rightmost value of scale.
Square root computation Takes the square root of the input value and linearly scales the result.
Computable input type: DC voltage
Linear scaling Value after scaling: Same as linear scaling.
Displayable and printable range: Same as linear scaling.
Low-cut function Sets values below the low-cut point to the leftmost value of scale. The leftmost value of scale must
be less than the rightmost value of scale.
Low-cut point range: 0.0 to 5.0% of the recording span (0.1% steps)
Bias Adds a bias to the measuring input value.
Bias value range: ±10% of the span of the measurable range at the specified range type.
±10% of the scaling span if linear scaling is used.
12.1 Input Specfcatons