Endress+Hauser Proservo NMS5 Operating Instruction page 41

Proservo NMS5
Endress+Hauser
5.8.5 Displacer ground wire installation
Depending on the application and Ex requirements, electrical grounding of the displacer is required.
There are different procedures depending on the displacer type, which are described below.
Standard displacer installation
1. Mount the displacer [3] on the wire ring [1].
2. Wind the securing wire [4] on the wire hook.
3. Wind the ground wire [2] between the washers [5] twice.
• If grounding is not required for non-explosion-proof applications, skip this step.
4. Secure the nut [6] with a wrench [7].
This completes the displacer installation procedure.
1.
1
2
3
Figure 37: Displacer installation
1 Wire ring
2 Ground wire
3 Displacer
4 Securing wire
5 Washer
6 Nut
7 Wrench
PTFE displacer installation
1. Remove the screw [1] using a flathead screwdriver.
2. Mount the displacer [4] on the PFA covered ring [2].
3. Remove the PFA cover approximately 10 mm (0.39 in) for conductivity.
4. PTFE Wire: Install the ground wire [6] onto the displacer from the wire insertion slot [3] until the
ground wire touches to the wall of the screw hole [5].
5. SUS Wire: Install the ground wire [6] onto the displacer from the wire insertion slot [3] until the
ground wire touches to the wall of the screw hole [5]. Then install the ground wire 10mm farther.
6. Tighten the screw [1].
• Hold the ground wire with finger tips so that the wire does not come out from the slot.
7. Lift the displacer using a screwdriver and confirm that the ground wire does not come out from
the slot.
This completes the PTFE displacer installation.
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5 Installation
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