YOKOGAWA WT210 User Manual page 84

4.6 Selecting the Measurement Range and Setting the Scaling Constant when External Sensor is Used (option)
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Selecting the Setting Format of the Scaling Constant
Yoy can select the setting format on the WT230. The following two setting formats
are available. The initial value is "ALL". A
• ALL: Select this when the same scaling constant should be applied to all elements
together.
• EACH: Select this when the scaling constant should only be applied to each
element seperately.
Setting the Scaling Constant
The procedure to set the scaling constant depends on the setting format (previous
setting). The setting ranges from 0.001 to 9999. The initial value is 50.00. In case of
the WT210, the scaling constant is set at display C.
• When ALL is selected:
The scaling constant set at display C will be applied to all elements together.
• When EACH is selected:
• The scaling constant set at display A will be applied to element 1 only.
• The scaling constant set at display B will be applied to element 2 only. This
selection will not appear on model 760502.
• The scaling constant set at display C will be applied to element 3 only.
After having selected ALL or EACH and entered the scaling constant, press the
ENTER key to end this scaling setting.
Selecting the Measurement Range (Current, with Scaling function ON)
After having set the scaling constant, select the menu for the current measurement
range. Select the rated output of the external sensor from this menu (refer to the
Operating Procedure on the previous page). Scaling of the external sensor input will
start as soon as you press the ENTER key after selecting. Scaling will stop as soon
as you select a measurement range other than external sensor input from the menu.
Note
• When performing measurements using the external sensor, and the scaling function for the
external PT/CT turned ON, the PT/CT scaling constant will interfere.
• The input range for the external sensor can only be of the manual type. There is no auto
range function.
• When you switch from external sensor input to direct, auto range input, an error will appear.
First, select manual range for direct input and afterwards select auto range (same goes for
setting by communication interface).
IM 760401-01E