Endress+Hauser Gammapilot FMG50, Краткое руководство по эксплуатации

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Gammapilot M FMG50 Mounting
Hauser 17
For more information, see:
CP01205F/00/EN
3.2.7 Installation conditions for density profile measurement (DPS)
Conditions
For density profile measurement, Gammapilot FMG50 devices are installed horizontally at
defined distances, depending on the size of the measuring range. In the case of density profile
measurement, the radiation source is normally inserted in an immersion tube, preferably one
that is double-walled, and introduced into the vessel. When introducing a radiation source
into an immersion tube, it is important to ensure that the measuring range is already filled
with medium in order to keep the radiation in the vicinity of the source as low as possible.
Description
To obtain detailed information on the distribution of layers of different densities in a vessel, a
density profile is measured using a multi-detector solution. Several FMG50 devices are
installed next to one another on the outside of the vessel wall for this purpose. The measuring
range is divided into zones and each compact transmitter measures the density value in its
respective zone. A density profile is derived from these values.
This results in a high-resolution measurement of the distribution of medium layers (e.g. in
separators)
For more information, see:
CP01205F/00/EN
3.2.8 Installation conditions for concentration measurement
Conditions
• If possible, the concentration should be measured on vertical pipes with forward flow from
bottom to top.
• If only horizontal pipes are accessible, the path of the beam should also be arranged
horizontally to minimize the influence of air bubbles and deposits.
• The Hauser clamping device or an equivalent clamping device should be used to
fasten the source container and the Gammapilot FMG50 to the measuring pipe.
The clamping device itself must be installed in such a way as to withstand the weight of the
source container and the Gammapilot FMG50 under all anticipated operating conditions.
• When the Gammapilot FMG50 is installed upside-down, it can be given additional support
(retaining bracket) to prevent damage to the connecting cable or to the unit if it falls.
• The sample point may not be further than 20 m (66 ft) from the measuring point.
• The distance of the density measurement to pipe bends is ≥3 x pipe diameter, and ≥10 x
pipe diameter in the case of pumps.
Measuring system arrangement
The arrangement of the source container and the Gammapilot FMG50 depends on the pipe
diameter (or the radiated length) and the density measuring range. These two parameters