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