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All Rights Reserved. Copyright © 2000, Yokogawa Electric Corporation
TI 04L01A01-02E
2.2.2
Standard Calculation Functions
Calculation types
Differential calculation : Calculates the difference between the measured values of two channels.
The difference can also be found between two different range types.
For example, the reference channel can be set to RTD, and the other channel set
to TC.
Linear scaling
: Scales the measured data to physical values that suit the application.
Square root
: Scales the input data by taking the square root.
Standard Calculation Specifications
Differential calculation
Available ranges : DC voltage (DCV), thermocouple (TC), and RTD
Linear scaling
Available ranges : DC voltage (DCV), thermocouple (TC), and RTD
Scalable limits
: -30000 to 30000
Decimal point
: User selectable (should be specified when entering scale value)
Engineering unit : User selectable, up to six characters (alphanumeric and special characters)
Square root
Available ranges : DC voltage (DCV)
Scalable limits
: -30000 to 30000
Decimal point
: User selectable (should be specified when entering scale value)
Engineering unit : User selectable (should be specified when entering scale value)
2.2.3
Input Filter
The filter types vary depending on the model. The filter can be set on each channel.
Model
Filter Type
Time Constant or Number of Moving Average
DX102
DX104
Low-pass filter
Select from off, 2 s, 5 s, and 10 s
DX106
DX100
DX112
Moving average
Select from off or 2 to 16 times
DX204
DX208
Low-pass filter
Select from off, 2 s, 5 s, and 10 s
DX210
DX220
DX200
DX230
Moving average
Select from off or 2 to 16 times
2.2.4
Tag Names
A tag name can be set for each channel.
Tag name
: Up to 16 alphanumeric characters
-5.0mV
0.0mV
5.0mV
10.0mV
15.0mV
Removed
5.0mV
New data
Removed
8.0mV
10.0mV
0.0mV
5.0mV
10.0mV
15.0mV
New data
0.0mV
-5.0mV
0.0mV
5.0mV
10.0mV
-10.0mV
4
3
2
1
5
Moving Average
Data in buffers
after data was
sampled
n
+1 times
Moving Average Calculation Buffers When
Calculating Average of 5 Most Recent Samples.
2,5,10sec
63.2%
Response while
recording(filter on)
Response while
recording(filter off)
Input
Measured value
Low-pass filter
Data in buffers
after data was
sampled
n
times
Data in buffers
after data was
sampled
n
+2 times