Emerson Rosemount 751, Быстрый старт

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Table 2-1: LCD Display Mode Options (continued)
Options Relationship between Input Signal
and Digital Display
Srt Square root
SrtF Square root with five-second filter
Square root function only relates to the digital display. The bar graph output
remains
linear with the current signal.
Square root response
The digital display will be proportional to the square root of the input current
where 4 mA = 0 and 20 mA = 1.0, scaled per the calibration procedure. The
transition point from linear to square root is at 25 percent of full scale flow.
Filter response operates upon “present input” and “input received in the
previous five
second interval” in the following manner:
Display = (0.75 previous input) + (0.25 present input)
This relationship is maintained provided that the previous reading minus the
present
reading is less than 25 percent of full scale.
2.1.3 Store the information
Procedure
Press both configuration buttons simultaneously for two seconds.
Note
The meter displays “- -” for approximately 7.5 seconds while the information
is being stored.
2.1.4 Set the display equivalent to a 4 mA signal
Procedure
1. Press the left configuration button for two seconds.
2. To decrease the display numbers, press the left configuration button.
To increase the numbers, press the right configuration button. Set the
numbers between –999 and 1000.
3. To store the information, simultaneously press both configuration
buttons for two seconds.
Quick Start Guide February 2019
10 Rosemount 751