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DP Flowmeter EARL Control instruments Flow Switches Pressure Switches Level Switches

FLOW SWITCHES

Typ 41vS 31d 107 172-173 700-720 776-778
small volume from 0,6 l/h checkmark
flow.<0,3 m/s , from DN15 checkmark checkmark checkmark checkmark
flow.>0,3 m/s     checkmark checkmark checkmark checkmark checkmark
pressure up to 1000 bar Temp up to 500°C     checkmark checkmark      
dirty Media       checkmark checkmark checkmark checkmark
DN> 250 mm       checkmark checkmark checkmark  
For Gas   checkmark checkmark   checkmark    
vibrations           checkmark checkmark
corrosive media   checkmark   checkmark checkmark    
Turbulence              
EEx d     checkmark checkmark checkmark    
EEx ia     checkmark checkmark checkmark    
certified       checkmark      

Switch with pendulum Series 107
The construction of these pendulum units has been developed over more than 30 years operational usage.

Flow switch with bellow type 700 and 720
These units are mostly suitable for applications where vibration is likely to occur and where contaminated media have to be controlled in either horizontal or vertical pipes. The flexible sealing bellows protects the unit from metal parts which may be found in the medium when controlling lubricating oil in large gear boxes.

Air flow switches Typ 172 and 173
Tough and unaffected by non-adhesive impurities in the medium these flow switches controls the flow of gases regardless of high operating pressures. The flow switch type 172 and 173 controls the flow of liquids and gases in pipes DN ≥40.

Flow switch type 31d
These rugged and hard wearing float operated units measure and control gases and uncontaminated liquids. The units can be mounted in either horizontal or vertical pipes, DN 15 to DN 150, and are suitable for use with pressure ranges PN 10 to PN 320.

Flow switch for low gas- or liquid flows type 41vS
The unit has been developed for long-term operational use and controls liquid flows from 0.1 l/h or gas flows from 20 l/h referred to air with standard conditions. The unit is suitable for horizontal pipes with threaded process G ¼. The set point is factory set.

Flow switch with nozzle type 776 for DN 15 type 778 for DN 15 – 32
These units are mostly suitable for applications where vibration is likely to occur and where contaminated media have to be controlled in either horizontal or vertical pipes. The internal nozzle installed enables to control low flow velocities. The flexible sealing bellows protects the unit from metal parts which may be found in the medium when controlling lubricating oil in large gear boxes.