3 Installation PROline Promass 80
18 Endress+Hauser
In order to ensure that the maximum permissible ambient temperature for the transmitter
(–20...+60 °C, optional –40...+60 °C) is not exceeded, we recommend the following ori-
entations:
➀ = For fluids with very high temperatures (> 200 °C), we recommend the horizontal
orientation with the transmitter head pointing downwards (Fig. H2) or the vertical orien-
tation (Fig. V)
➁ = For fluids with low temperatures, we recommend the horizontal orientation with the
transmitter head pointing upwards (Fig. H1) or the vertical orientation (Fig. V).
Special installation instructions for Promass F, E and H
"
Caution:
The two measuring tubes of Promass F and Promass E and the one of Promass H are
slightly curved. The position of the sensor, therefore, has to be matched to the fluid prop-
erties when the sensor is installed horizontally (Fig. 7).
Fig. 7: Promass F, E, H installed horizontally
1 Not suitable for fluids with entrained solids. Risk of solids accumulating.
2 Not suitable for outgassing fluids. Risk of gas accumulating.
3.2.4 Heating
Some fluids require suitable measures to avoid loss of heat at the sensor. Heating can
be electric, e.g. with heated elements, or by means of hot water or steam pipes made
of copper.
"
Caution:
• Risk of electronics overheating! Consequently, make sure that the adapter between
sensor and transmitter and the connection housing of the remote version always
remain free of insulating material. Note that a certain orientation might be required,
depending on the fluid temperature (See Section 3.2.3 “Fluid temperature”).
• With a fluid temperature between 200...350 °C, heating is not permitted for the com-
pact version of the high-temperature version.
• When using electrical heat tracing whose heat is regulated using phase control or by
pulse packs, it cannot be ruled out that the measured values are influenced by mag-
netic fields which may occur, i.e. at values greater than those permitted by the EC
standard (Sinus 30 A/m). In such cases, the sensor must be magnetically screened
(except for Promass M).
The secondary containment can be shielded with tin plates or electric sheets without
privileged direction (e.g. V330-35A) with the following properties:
– Relative magnetic permeability
µ
r
≥ 300
– Plate thickness d
≥ 0.35 mm
F06-xxxxxxxx-11-00-00-xx-003
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