A diver with a built in magnet is moved by the flow inside a cylinder tube with a conical and lateral slit. A compensating spring allows the mounting in any position. The flow controllers DUM/A and DUM are efficient with fluid viscosity close to water viscosity and operate without incidence of pressure variations.

DUM/A: In addition of a contact, an analogical display indicates the flow rate (even with quick variations of the fluid speed).

DUM: Blind controller, standard supply with NO contact, change over contact or ATEX certified contact on request.

DUM - DUM/A

Pressure drop: 0.02 to 0.8 bar according model
Temperature: 100°C (option with 160°C as a maximum)
Accuracy: ± 5 % full scale
Contact: NO (Normally Open)

OPTIONS
Contact: Change over contact or Explosion proof

DUM - DUM/A (Brass type)

Pressure: 200 bar as a maximum
Body: Brass
Connections: Nickel plated brass
Diver: Nickel plated brass
Spring: Stainless steel 1.4571 (316 Ti)
Seals: NBR

DUM - DUM/A (Stainless steel type)

Pressure: 300 bar as a maximum
Body: Stainless steel 1.4571 (316 Ti)
Connections: Stainless steel 1.4571 (316 Ti)
Diver: Stainless steel 1.4571 (316 Ti)
Spring: Stainless steel 1.4571 (316 Ti)
Seals: FPM

The adjustment is continuous, sliding the switch on a guide and fixed it up with a screw.
The output connection is realized through a PG 9 on an IP 65 connector (DIN 43650).

The switch is, as standard, NO: reversing the contact 180°, it is possible to have the NC action.

Standard switch / NO contact with no flow       Changeover contact (Option)
Switching power: 250 V / 1 A / 100 VA       Switching power: 250 V / 1.5 A / 50 VA (3 VA as a minimum)

ATEX certified contacts (Option) NO with no flow       Ex Changeover contact
ATEX II 2G EEx m II T6: maxi 250 V / 2 A / 60 VA            maxi 250 V / 1 A / 30 VA