Setup Examples - YOKOGAWA SMARTDAC+ GX10 User Manual

Setup Examples

IM 04L51B01-06EN
pseudo-Log input and Log input (nonlinear log) setup examples are shown below.
Setting the Pseudo-Log Range
This setting is for logging the pseudo log output (see the table below) of a vacuum gauge.
Pressure Reading [Pa] Output Voltage [V]
-7
1.30x10
-7
5.00x10
-6
1.00x10
-6
5.00x10
-5
1.00x10
-5
5.00x10
-4
1.00x10
GX/GP main unit: Press MENU key, Tap the Brows tab > Setting > AI channel settings >
Range.
Web application: Click the Setting tab > AI channel settings > Channel range (0001-0010)
> Range
Hardware configurator: Click AI channel settings > Channel range (0001-0010) > Range
Set the channel 0001 range as shown below.
Range
Type: Volt
Range: 20V
Span: Span Lower 0.000, Span Upper 7.000
Calculation: Pseudo-Log input
Scale:
Decimal place: 2
Scale: Scale Lower 1.00E‒07, Scale Upper 1.00E+00
Unit: Pa
Display Example
Below is a screen example in which the trend direction is set to vertical on the GX/GP main
unit.
Note
• Set the mantissa to 1.00.
• The output voltage for pressure reading whose mantissa is 1.00 has a certain deviation.
For example, if the pressure reading is 1.00E–07, the output voltage is 0.00 to 0.10 V. In this
situation, set the range (Span Lower) to the minimum value (0.00 V).
Pressure Reading [Pa] Output Voltage [V]
0.13 5.00x10
0.50 1.00x10
1.10 5.00x10
1.50 1.00x10
2.10 5.00x10
2.50 1.00x10
3.10 9.90x10
Setting the Log scale
-4
3.50
-3
4.10
-3
4.50
-2
5.10
-2
5.50
-1
6.10
-1
6.99
Log scale
Digital value
13