KROHNE BM 26 BASIC_ADVANCED EN - Manual (Page 79)

APPENDIX
9
79
BM 26 BASIC/ADVANCED
www.krohne.com 10/2012 - 4000347004 - HB BM26 Basic/Adv R04 en
9.1 Liquid level offset: description
The float contains magnets that rotate the flaps in the indicator column on the side of the
measuring chamber. The position of the magnets does not correspond to the level of liquid so
the scale is offset at the factory to take into account this difference. The offset of the magnets
depends on the liquid density. Refer to the illustration that follows:
Magnet offset
Figure 9-1: Magnet offset
1 True level of the liquid
2 Top of the float magnet (which corresponds to the level shown on the indicator column)
3 Difference (offset) between the true level of the liquid and the top of the float magnet (depends on the liquid density)
4 Indicator column of yellow/black rotating flaps (with the optional scale)
CAUTION!
If the product density changes, the device will not measure accurately. Contact your local sales
office for more data and advice.
INFORMATION!
The limit switches are not delivered attached to the device and the liquid level offset must be
taken into account. For the limit switch installation procedure, refer to Optional limit switch on
page 23
. For liquid level offset switches and other correction data, refer to Liquid level offset:
correction data on page 80 .