Installation Cerabar M, Deltabar M, Deltapilot M / 4...20 mA HART
26 Endress+Hauser
3.5.2 FMB50
Level measurement
P01-xMx5xxxx-11-xx-xx-xx-000
Fig. 15: Measuring arrangement for level
• Always install the device below the lowest measuring point.
• Do not install the device at the following positions:
– in the filling curtain
– in the tank outflow
– in the suction area of a pump
– or at a point in the tank that can be affected by pressure pulses from the agitator
• The calibration and functional test can be carried out more easily if you mount the device
downstream of a shutoff device.
• Deltapilot M must be included in the insulation for media that can harden when cold.
Pressure measurement in gases
• Mount Deltapilot M with shutoff device above the tapping point so that any condensate can flow
into the process.
Pressure measurement in steams
• Mount Deltapilot M with siphon above the tapping point.
• Fill the siphon with liquid before commissioning.
The siphon reduces the temperature to almost the ambient temperature.
Pressure measurement in liquids
• Mount Deltapilot M with the shutoff device below or at the same level as the tapping point.
3.5.3 FMB51/FMB52/FMB53
• When mounting rod and cable versions, make sure that the probe head is located at a point as
free as possible from flow. To protect the probe from impact resulting from lateral movement,
mount the probe in a guide tube (preferably made of plastic) or secure it with a clamping fixture.
• In the case of devices for hazardous areas, comply strictly with the safety instructions when the
housing cover is open.
• The length of the extension cable or the probe rod is based on the planned level zero point. The
top of the probe should be at least 5 cm (1.97 in) below this.
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