Endress+Hauser Deltabar M PMD55 - Safety instructions

Deltabar M 4...20 mA HART Installation
Endress+Hauser 5
2.1.1 Installation position for flow measurement
!
Note!
For more information about differential pressure flow measurement refer to following
documents:
• Differential pressure flow measurements with orifices: Technical Information TI00422P
• Differential pressure flow measurement with Pitot tubes: Technical Information TI00425P
Flow measurement in gases
• Mount the Deltabar M above the measuring point so that the condensate which may be
present, can run off into the process piping.
Flow measurement in steam
• Mount the Deltabar M below the measuring point.
• Mount the condensate traps at the same level as the tapping points and at the same distance
to the Deltabar M.
• Prior to commissioning, fill the impulse piping to the height of the condensate traps.
Flow measurement in liquids
• Mount the Deltabar M below the measuring point so that the impulse piping is always filled
with liquid and gas bubbles can run back into the process piping.
• When measuring in media with solid parts, such as dirty liquids, installing separators and drain
valves is useful for capturing and removing sediment.
2.1.2 Installation position for level measurement
Level measurement in an open container
• Mount the Deltabar M below the lower measuring connection so that the impulse piping is
always filled with liquid.
• The low-pressure is open to atmospheric pressure.
• When measuring in media with solid parts, such as dirty liquids, installing separators and drain
valves is useful for capturing and removing sediment.
Level measurement in a closed container
• Mount the Deltabar M below the lower measuring connection so that the impulse piping is
always filled with liquid.
• Always connect the low-pressure above the maximum level.
• When measuring in media with solid parts, such as dirty liquids, installing separators and drain
valves is useful for capturing and removing sediment.