Installation; Requirements - Endress+Hauser Proservo NMS83 Operating Instructions Manual

Installation

16
5 Installation
5.1

Requirements

5.1.1 Type of tanks
Depending on the type of tank and application, different installation procedures are
recommended for NMS8x.
Type of tanks
Fixed roof tank
Tank with agitator or heavy
turbulence
• A stilling well is required in a floating roof tank and a covered floating roof tank.
• Guide wires cannot be installed in a floating roof tank. When the measuring wire is
exposed to free space, it may break due to an external shock.
• Installing guide wires is not allowed in pressurized tanks because the wires would
prevent closing the valve for replacing the wire, wire drum, or displacer. NMS8x
installation position is important for applications without the guide wire system in
order to prevent the measuring wire from being broken (refer to Alignment of
NMS8x for details →  26).
Without guide system With stilling well
Proservo NMS83
With guide wires
Endress+Hauser