KROHNE DK 46-47-48-800 EN - Manual (Page 17)

ELECTRICAL CONNECTIONS
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DK46 - DK800
www.krohne.com 05/2011 - 4000302403 MA DK46-800-R03-en
4.3 Limit switch settings
The following procedures are to be performed (DK../../K):
• Remove both clamping screws 1
• Slide the limit switch over the measuring glass
• Use the two clamping screws 1 to fasten the limit switch 3 to the back rail 2 of the
measuring device.
• Reinstall the protective cover following installation.
For installation after the fact, the measuring glass must be removed. (refer to chapter entitled
"Service")
The connecting lead of the limit switch is guided through a hole in the base of the device and
sealed.
Observe the following for bistable limit switches with external EMC filters in separate DIN rail
housing:
The EMC filter unit and the back rail of the meter must be galvanically connected and grounded.
An isolation switching amplifier with intrinsically safe circuit controls is necessary to operate the
NAMUR limit switches.
CAUTION!
When setting the limit switch, be careful to lay the cable so that it does not get damaged.
Avoid canting of the limit switch during installation: glass breakage
MA_DK46_800_R03_en_302403_PRT.book Page 17 Thursday, May 19, 2011 8:26 AM