Omega RD-MV100 Series, User Manual

Page: 112 / 299

5-7
Measurement Channel Settings
5
5.4 Difference Computation (Delta) Setting
To measure the difference between the inputs of two channels, follow the procedures
below to set the input range. The difference computation channel displays the computed
result of “(the measured value of the difference computation channel) - (the measured
value of the reference channel).” Select the input type for the difference computation
channel from DC voltage, thermocouple, RTD, and ON/OFF input. The range cannot be
changed while data acquisition or computation is in progress.
Procedure
• These procedures are carried out in the setting mode.
• Use the arrow keys to move the cursor (blue) to the appropriate parameter. (The
parameters that cannot be changed are grayed.)
• The possible selections are displayed at the bottom of the screen. Select using the
soft keys.
• The parameter boxes that are changed are displayed in yellow. By confirming the
new settings, they change back to white.
Press
MENU
.
To display the setting screen press the soft key
#1
.
1
2
3
4
5 6
The numbers in front of the operating procedure shown below correspond to the
numbers in the above figure.
1. First channel and last channel
Set the channels that will measure the difference.
2. Mode
Set the mode to [Delta].
3. Type
Select the input type from [Volt], [TC], [RTD], and [DI].
4. Range
If the type is [Volt] enter the input range. If it is [TC] or [RTD] enter the type of
TC or RTD. If it is [DI] enter [Level] or [Cont].
5. Upper and lower limits of span
Set the upper and lower limits of the display span.
Pressing the [Input] soft key displays a window used to enter a numerical value.
Enter a value in the allowed range and press the DISP/ENTER key.
For the procedures related to entering numerical values, see “Entering
Numbers” on page 3-21.
Note
• For TC or RTD input, the display span cannot exceed the difference between the maximum
and the minimum of the input range.
Example : For TC type L, the input range is –200.0 to 900.0
°
C.
The allowed range of display span: –1100.0 to 1100.0
°
C.
• For DC voltage input, the display span cannot exceed the input range.
• The upper limit and the lower limit cannot be set to the same value.