KROHNE DK 32 Purge EN - Manual (Page 21)

TECHNICAL DATA
7
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DK32
www.krohne.com 04/2011 - 4000898801 MA DK32 Air purge set R02 en
Technical data
7.1 Operating principle
The flowmeter operates on the float measuring principle.
The measuring section consists of a metal cone in which a float can move freely up and down.
The medium flows through the flowmeter from bottom to top.
The float adjusts itself so that the buoyancy force A acting on it, the form drag W and its weight G
are in equilibrium: G = A + W.
For the DK32, DK34 and DK37/M8M 1 the flow-dependent height of the float in the measuring
section is transmitted by means of a magnetic coupling and displayed on a scale.
For the DK37/M8E 2 the flow-dependent height of the float in the measuring section is
transmitted to the electronic display by means of a magnetic coupling on sensors S1 and S2.
Figure 7-1: Operating principle
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