Proline Promass 84F, 84M
Hauser
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Special installation instructions for Promass F
"
Caution!
The two measuring tubes for Promass F are slightly curved. The position of the sensor, therefore, has to be
matched to the fluid properties when the sensor is installed horizontally .
a0004581
Promass F, installed horizontally
1
Not suitable for fluids with entrained solids. Risk of solids accumulating.
2
Not suitable for outgassing fluids. Risk of air accumulating.
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 or heating jackets.
"
Caution!
• Risk of electronics overheating! Make sure that the maximum permissible ambient temperature for the
transmitter is not exceeded. 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.
• With a fluid temperature between 200 °C to 350 °C the remote version of the high-temperature version is
preferable.
• 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 magnetic 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 shielded (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
• Information on permissible temperature ranges
Special heating jackets which can be ordered as accessories from Hauser are available for the sensors.
1
2
