Vortex flow sensor SIKA VVX 25

Type: VVXB4SNKRRHTTR02

VVX 25, SP-VVX0182

Measuring tube PPS, sensor ETFE

G 1 1/4 external thread

DN 25 / ID 25, PN 10

Hose nozzle: AD 20

Ax. medium temperature: 90 ° C

Measuring range: 7 ... 70 l / min

5-pin connector M12x1

PIN 1: Power supply 8 ... 30 VDC

PIN 2: Temperature sensor KTY82-210

PIN 3: GND. PIN 4: NPN open collector, pulse rate 77 1 / l

PIN 5: Temperature sensor KTY82-210. Firmware V0.24

 

Vortex Flow Sensors. How it works: Behind a flow around the bluff body arise opposite and mutually offset vortex. The vertebrae dissolve on the Edge of the bluff body and form a Kármán vortex street in the flow. The distance between the individual vertebrae is constant. The frequency with which the vortexes flow past a sensor depends on the flow velocity and proportional to the flow. The transducer detects the vortices, these are converted into an electrical frequency signal. The advantages of this measuring principle are: almost free pipe cross-section, low pressure loss. Wide range of application in terms of pressure, temperature and density. Independent of the conductivity of the medium. High long-term stability / no zero drift.