Appendix 1. Application, Setting And Change Of Basic Parameters; A1.1 Applications And Selection Of Basic Parameters - YOKOGAWA Admag TI Series User Manual

Appendix 1. Application, Setting and
A1.1 Applications and Selection of Basic
Parameters
Setting Item (applicable
parameter)
Tag No. (PD_TAG) setup
Calibration range setup
(XD_SCALE of AI block)
Output scale setup
(OUT_SCALE of AI block)
Simulation setup
(SIMULATE of AI/DI block)
Damping time constant setup
(PRIMARY_VALUE_FTIME of
STB)
Output signal low cut mode
setup
(PRIMARY_VALUE_LOWCUT
of STB)
LCD display setup
(DISPLAY_SELECT1-3,
DISPLAY_CYCLE of STB)
Zero adjustment
(AUTO_ZERO_EXE, MAGFLO_
ZERO of STB)
<Appendix 1. Application, Setting And Change Of Basic Parameters>
Change of Basic Parameters
Sets PD_TAG and each block tag.
Up to 32 alphanumeric characters can be set for both.
Sets the range of input from the transducer block corresponding to 0% point
(always 0 for this product) and 100% points in operation within the AI function
block. "Span flow rate", item specified at ordering, is set at factory shipping.
Sets the following four data; a range unit, input value of the 0% point (in case
of this product, 0), input value of the 100% point (corresponding to flow rate
span) and decimal-point position.
The same value as XD_SCALE is set at shipment from the manufacturing
factory.
Performs simulation of the AI/DI function block.
The input value and status for the calibration range can also be set. Use this
parameter for loop check and other purposes. Refer to "Simulation Function"
in Section 5.13.
Sets the damping time constant in seconds. The setting of PRIMARY_
VALUE_FTIME affects not only the flow rate, but also the totalization.
In comparison, the setting of parameter PV_FTIME in an AI function
block works as the damping time constant for the AI block's OUT.
As the damping function of the flowmeter itself, it is advisable to use
PRIMARY_VALUE_FTIME.
This setup is used for zeroing flow rate readings in a low flow rate area.
Specifies the value of PRIMARY_VALUE_LOWCUT as a percent of
PRIMARY_VALUE_RANGE. In comparison, the setting of parameter
LOW_CUT in the AI function block works as a low cutoff level setting for the
AI block's OUT. As the low-cut function of the flowmeter itself, it is advisable
to use PRIMARY_VALUE_LOWCUT.
Sets the type of data, the unit to be displayed on the LCD and the display
speed.
Adjust display speed if a low temperature environment causes a poor LCD
display quality.
Performs zero adjustment. Zero adjustment should be done only when the
measurement fluid is filled in the sensor and the fluid velocity is completely
zero.
Overview
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