KROHNE UFM 500 EN - Manual (Page 25)

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5.7 Current output I
5.7.1 Application I (fct. 3.3.1)
Application I Setting
via fct. 3.3.1 or 3.4.1 Other functions
set via fct. 3.3.7 to 3.3.9 Characteristic
of outputs, see sect. 5.7.3
I
3.3.1 F
3.4.1 SMU I
3.3.7 to 3.3.9
1 flow direction 1. DIR any possible I 1
F/R-operation
F/R-changeover via F
2 DIR F/R IND. possible I 2
Direction indication for F F/R IND. 2 DIR possible I 3
e.g. operation indicator OFF any no I 4
F/R-operation with one
indicating instrument
I < I 0 PCT any possible I 5
Sound velocity
measurement
SOUND.VELO any no I 6
For connection diagrams of outputs, see section 2.3.5.
5.7.2 Other functions for I
Fct. 3.3.2 Ranges for current output I
Fixed ranges:
0 to 20 mA or 4 to 20 mA.
Variable ranges: Set to OTHER.RANGE (= other ranges).
Lower and upper range values and a current limitation are freely selectable, see fct. 3.3.3, 3.3.4 +
3.3.5.
Fct. 3.3.3 Current for 0% flowrate (I
0%
)
(appears only if “OTHER.RANGE” is set under fct. 3.3.2).
Range from 00 to 16 mA (e.g. 01 mA at output span 1 to 5 mA).
Fct. 3.3.4 Current for 100% flowrate (I
100%
)
(appears only if “OTHER.RANGE” is set under fct. 3.3.2).
Range from 04 to 20 mA (e.g. 05 mA at output span 1 to 5 mA). This value must be at least 4 mA greater than that of fct.
3.3.3, otherwise errors in parameter check (fct. 4.3.0), see sect. 4.2 + 4.3.
Fct. 3.3.5 Maximum output current I
max
(appears only if “OTHER.RANGE” is set under fct. 3.3.2).
Range from 04 to 22 mA (e.g. 06 mA at output span 1 to 5 mA, prevents damage to connected 5 mA instruments). This
value must be greater than or equal to that of fct. 3.3.4, otherwise errors in parameter check (fct. 4.4.0), see sect. 4.2 + 4.3.
Fct. 3.3.6 Time constant for I
Range can be optionally set from 0.04 to 3,600 seconds.
Fct. 3.3.7 to 3.3.9 Low-flow cutoff SMU
Refer to section 5.10.
Sound velocity measurement (see also sect. 5.17)
•
Set the minimum and maximum sound velocity under fct. 3.1.8 and 3.1.9.