KROHNE DK 32 Purge EN - Manual (Page 15)

ELECTRICAL CONNECTIONS
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DK32
www.krohne.com 04/2011 - 4000898801 MA DK32 Air purge set R02 en
4.3 Setting the limit switch
Set the pointers to the desired limit values as a min. contact 1 and max. contact 2 using a slip
coupling along the scale.
Adjusting the limit switch with reed contact:
• Slacken nut 3
• Set reed cartridge to the required value
• Secure with nut 3
Comment
The reed contact is actuated directly by the float magnet. The desired operating point can only be
determined in measuring mode. A reference to the scale and/or pointer cannot be established.
Connection three-wire reed contact
Figure 4-2: Electrical connection of reed contact limit switch
Strand colours for flowmeters with preassembled cables:
1 Silicone-insulated wire - yellow/green / FEP-insulated wire - red
2 Silicone-insulated wire - brown / FEP-insulated wire - brown
3 Silicone-insulated wire - blue / FEP-insulated wire - blue
Figure 4-3: Limit switch settings
MA_DK32_Purge_R02_en_898801_PRT.book Page 15 Wednesday, April 6, 2011 3:01 PM