Tokyo Keiki UFL-30, Руководство по установке и эксплуатации

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II-39
F o r w a rd
０
L o w
H ig h
2 0 m A
4 m A
9 0 %
8 0 %
b. Checking analog output (4-20mA current output)
Display Menu No. : CHK-21 : RATIO
Range of Value : -120.0 to +120.0
In order to set any output current, you need to input a percentage of full scale flow rate. If
“SPAN CORR” and/or “LOW CUT” functions are activated, output current shall be in accordance
with these adjustments.
Double Range
Please refer to the analog output profile in the graph at right.
ex.) Forward Max. Flow Rate = ”0.4”
Forward Max. Flow Rate in Low Range = “0.1”
CHK-21 : RATIO = less than “+22.5%” = Low Range
(0.4 x 0.225 = 0.09
≤
0.100 x 0.9)
CHK-21 : RATIO = more than “+22.6%” = High Range
(0.4 x 0.226 = 0.0904 > 0.100 x 0.9)
* In case range change from High to Low,
CHK-21 : RATIO = less than “+20.1%” = High Range
(0.4 x 0.201 = 0.0804 > 0.100 x 0.8)
CHK-21 : RATIO = more than “+20.0%” = Low Range
(0.4 x 0.2 = 0.08
≤
0.100 x 0.8)
For Single Output, percentage “+**%” is recognized as applicable to Forward Max. Flow Rate and
percentage “-**%” is recognized as flow rate zero.
For Double Output, percentage “+**%” is recognized as applicable to Forward Max. Flow Rate and
percentage “-**%” is recognized as applicable to Backward Max. Flow Rate.
Note :
For “RATIO” input, the far left character on the display line is a plus or minus sign.
Display Menu No. : CHK-22: [FINISH] (ends Analog Output Check)
When Analog Output Check is active, mark <A > will appear at the far right of the 1
st
line ,
except when [STATUS 1] or [STATUS 2] is displayed.
After executing [FINISH], the <A > mark will disappear.
If power is shut off when Analog Output Check is active, this check mode will be concluded.