DESCRIPTION
The flow meter and switch model DS05 works according to a modified variable area principle. The float is guided in a cylindrical measuring glass by means of a spring. The flowing medium moves the float in the flow direction. The upper edge of the float shows the momentary flow via an etched scale on the measuring glass.

A reed contact is mounted outside the meter in a sealed housing. When the float reaches the position of the reed contact the switch will close. With higher flows the float moves further upward until it reached a built-in float stop, still keeping the switch closed. This ensures a bistable switch function at any time. The reed contact is adjustable over the full switching range of the meter.

The built in spring and magnetic float are very reliable. As the spring opposes the float and the flow it is possible to mount the flow meter in any orientation.


SPECIFICATIONS
Max Pressure: 10 bar (145 PSIG)
Pressure Drop: 0.02-0.5 bar (0.3-7.2 PSI)
Max Temperature: 120°C (optionally 160°C)
  for liquids, 90°C for gases
Materials:
  Measuring Glass - Duran 50
  Housing - Aluminum
  Connections - Brass or Stainless
  O-rings -
              Brass Version - Buna
              SS Version - Viton
Electrical Connections - DIN 43650 plug
Accuracy - ±5% f.s.
Ranges:
  Water - 0.2-4.0 l/min to 30-250 l/min