KROHNE BM 702 A EN - Manual (Page 41)

OPERATION
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BM 702 A
www.krohne.com 09/2009 - 4000643301 - MA BM 702 A R01 en
1 Drain the tank completely to the 0% marking (= 4 mA).
This example was written for the case: current output = level (default). For
distance measurement the points 0% (short distance = high level) and
100% (large distance = low level) are exchanged.
2 Press the lower keys (^ und ↓) down, until the asterisks on the display
"Tank Height |********" are replaced by the actual measured distance
value.
If no reliable measurement is possible "No Access" is displayed. Abort by
pressing ^.
3 Then release and press ^. In the lower line: "Sure ? No" is displayed.
4 If this value is not plausible or the tank is not empty, abort by ^. Or
accept the value by pressing ↑ ("Sure ? Yes") and then ^.
5 Now the tank height is set.
6 In the next step you can also enter this value as 4 mA scaling (0%). Press
^. In the lower line now: "Sure ? No" is displayed again.
7 If this value shall not be stored, abort by ^. Or accept this 4 mA scaling
by pressing ↑ ("Sure ? Yes") and then ^.
8 Fill the tank to the 100% mark. Use the same procedure for the 100%
point = 20 mA only now by pressing the top keys → and ↑.
This example was written for the case: current output = level (default). For
distance measurement the points 0% (short distance = high level) and
100% (large distance = low level) are exchanged.
If no reliable measurement is possible "No Access" is displayed. Abort by
pressing ^.
9 First the measured distance can be taken as block distance. After this
you can enter or adjust the 20 mA point (100%) according to the actual
level.
100%
.book Page 41 Thursday, September 3, 2009 2:53 PM