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INFORMATION
DATA WHEN CHOOSING EQUIPMENT |
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Level measurement of
liquid and bulk |
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a) Data about the fluid
to be measured: |
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- what is the fluid and its
concentration___________________________________ |
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- product temperature : min.___________
max.____________ |
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- pressure range: min.______________
max.______________bar |
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- dielectric constant of the product,
Er___________ |
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- product specific
gravity:__________________ |
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- product built-up on probes is likely to
occur? Y - N - |
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- for liquids only: |
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viscosity at working
temperature:_________centipoise |
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conductivity:__________________ |
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solidification is
possible? Y - N - |
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foam is likely to occur? Y - N - |
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waves on surface? Y - N - |
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highly volatile? Y - N
- |
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- for bulk products
only: |
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dry - or humed - ? |
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high powder - or
coarse pellets - |
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b) Vessel data: |
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- walls
material:_________________________________________________________ |
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- vessel is open -
or sealed - |
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- vessel
dimensions:_______________X______________X______mm (attach drawing) |
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- filling / discharge nozzles position
(attach drawing) |
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- fittings available for level device: |
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flange_____________________ |
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thread_____________________ |
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pipe_______________________ |
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c) Device requirements: |
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- mounting position : |
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side |
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top |
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bottom |
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- continues level measurement - or level switch - ? |
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- enclosure protection IP ___________________or Explosion
class____________ |
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- for continous measurement only: |
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level range _________mm
(attach drawing) |
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accuracy___________%FS |
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- dasplay |
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local - |
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remote - |
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- outputs: |
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4-20 mA |
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serial 232/485 or
Hart/Fieldbus |
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limit
switches:____________________________ |
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- for point measurement only: |
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number of
points:____________________ |
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length from mounting
position to switching point:________mm |
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output type: relay - ;
PNP - ; NPN - ; 2 wire AC - |
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output status in presence
of product: NO -, NC - , SPDT - |
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