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Installation guide/Electronic part replacement (non-SIL devices only)

Liquid Level Switch 

Type LLS 4000 / LLS 4000U

14

8R

96

52

14

8R

96

52

© Danfoss | DCS (ms) | 2020.03

AN331327770735en-000101 | 1

M12 male Electrical 

connector

Heat sink (do not cover)

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Hexagon 32 mm

Liquid sensing part

Process connection 
  G ¾” or ¾” NPT

Fig. 1

Fig. 2

Warning!

 This is a Class A device. This 

device may cause radio interference in 

residential areas. In case of interference, 

the operator may be required to take 

appropriate measures. This instrument 

has to be mounted on a metallic tank. 

The device is intended to be used in 

industrial areas.

O-ring

Cover disassembled LLS

to avoid any access of

particles, moisture or

dirt

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