KROHNE H250 M8-M9-M10 EN - Manual (Page 56)

7
SERVICE
56
H250
www.krohne.com 04/2011 - 4000269302 MA H250-R02 en
7.2.2 Retrofitting float damping
• Remove the device from the piping.
• Take the upper snap ring 1 out of the measuring unit.
• Take the upper float catcher 2 and float 5 out of the measuring unit.
• Fasten the snap ring 3 into the lower slot of the float's guide rod.
• Slide ceramic sleeve 4 on to the float's guide rod and attach it to the top slot using the span
ring 3.
• Insert float into the lower float guide in the measuring unit.
• Retrofit the supplied damping cylinder with the integrated float catcher 2 into the measuring
unit.
• Insert upper snap ring 1.
7.2.3 Retrofitting pointer damping
When retrofitting the pointer damping for indicator M9 with ESK2A current output and limit
switches, note that the pointer may move briefly when installing the pointer damping (eddy
current brake), which may trigger an error alarm or may change the current output by showing
peaks.
The Eddy current brake consists of two parts:
1 Snap ring
2 Float catcher
3 Spring washer
4 Ceramic sleeve
5 Float
1 Turnbuckle
2 Eddy current brake
MA_H250_R02_en_269302_PRT.book Page 56 Tuesday, April 12, 2011 10:17 AM