VL Flow Switch

Feature : Optionally switching contact
Characteristics : A piston moves in a transparent glass tube, relative to the flow. The position of the float depends on the volume flow (weight force versus resistance to flow), and indicates the flow rate on the scaled glass tube.
Handling and operation :

• Include straight calming section of 5 x DN in inlet and outlet
• When tightening the union nut, the connection piece must be countered using an open-ended spanner (SW 19).
• If the media are dirty, install a filter (use magnetic filter for ferritic components).
• It must be ensured that the values given for voltage, current, and power are not exceeded.
• When switched on, a load must be connected in series.
• The electrical details apply to ohmic loads. Capacitive and inductive loads must be operated using a protective circuit.

Options :

• Display and switching ranges for oil or gas
• Special values
• Scale 0..100 %
• Optionally transformer 250 V AC, 1,5 A, 50 VA, Wiring no. 0.282

Ordering information :

• Specify direction of flow, medium, and switching range.
• For oils, state viscosity, temperature and designation (e.g. ISO VG 68) (enquire about range).
• For gases, state pressure (relative or absolute), temperature and medium (e.g. air) (enquire about range).