Endress+Hauser Deltatop DP71B, Руководство по эксплуатации

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Deltatop DP71B, DP72B, DP73B Installation
Hauser 13
3.5.3 Mounting position
• The mounting position must be chosen such that access to the transmitter is always possible.
• If the following process temperatures are exceeded, a remote version has to be used. The
transmitter must be mounted at a sufficient distance from the primary device.
3.5.4 Heat insulation
Some applications require suitable measures to avoid heat loss to the environment. A wide range of
materials can be used to provide the required insulation.
With the compact version, the thickness of the insulating layer is taken into account in the sizing.
The actual thickness must not be larger than the thickness specified in the "Sizing sheet - data
sheet".
In the case of insulated pipes, make sure that the impulse pipes are not covered in order to ensure
sufficient heat dissipation. Otherwise the transmitter may become overheated (or undercooled).
This applies equally to both the compact and the remote version.
"
Caution!
Danger of electronics overheating!
Make sure that the impulse pipes between the primary element and the transmitter are always kept
free of insulation.
Compact version Remote version
Max. temperature • For gases, liquids and steam:
390 °F (200°C)
• With standard material:
approx. 800 °F (427 °C)
Max. pressure 6000 psi (420 bar)
"
Caution!
With insulated pipes, the length of the mounting
nozzle must be increased by the thickness H of
the insulating layer. Therefore, this thickness
must be specified on the "Sizing sheet - data
sheet" (see Technical Information TI441P). The
material of the mounting nozzle extension must
be specified in the product structure (feature
80).
The following lengths are available for the
extension of the mounting nozzle:
• 2" (50 mm)
• 4" (100 mm)
• 5" (127 mm)
• 6" (152.4 mm)
P01-DPBxxxxx-14-xx-xx-xx-003
ID: Inner pipe diameter
H: Thickness of the insulating layer
H
ID