Weber Sensors 4320.12/12 Flow-Captor Flow Switch with Measuring Range 0-20 to 0-300 cm/sec in Water Systems, 316 Stainless Steel Sensor Tube, 12 mm Diameter
- Part #:4320.12/12
- Model #:Flow-Captor
- Condition:Brand New

The flow-captor is a flow monitor which is used in automation processes and other industrial applications where liquid media need to be monitored. This series offers "inline-models" that have been specially designed for installation in smaller pipe diameters. The sensor works according to the calorimetric measuring principle. The detection takes place inside the inline tube, whereby the sensor measures the flow velocity of the medium and converts it into an electrical signal.
Features:
- For small pipe sizes
- Precise switching flow sensor with high accuracy even with slower flows
- Separate adjustment of flow range and switching point
- Analogue display of flow condition and adjusted switch-point via LED chain
- Electronic function without any mechanically moved parts
- Robust industrial design (special potting)
- ISO 9001:2015
- The sensor tube is made of stainless steel 316 and is an integral part of the inline flow-captor
- Specification Sheet
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| Medium | water-based |
| Sensor Data | |
| Measuring range | 0 - 20 cm/s to 0 - 300 cm/s, continuously adjustable |
| Flow volume at 300 cm/s related to tube inner diameter | 12 x 1 mm; 14.1 l/min |
| Set-point range | approx. 15 % - 90 % of measuring range setting |
| Medium temperature | -20 °C to +80 °C |
| Ambient temperature | -20 °C to +70 °C |
| Pressure | max. 30 bar (3000 kPa) |
| Response time | 2 sec. to 10 sec. (according to range setting) |
| Linearity deviation | < 5 % |
| Repeatability | < 2 % |
| Hysteresis | ca. 10 % |
| Temperature drift | < 0.3 % K |
| Mechanical Data | |
| Protection class | IP 65 |
| Material housing | PBTP, glass fibre reinforced (Ultradur ®) |
| Material inline tube | stainless steel 316 |
| Torsion between pipe and housing | ≤ 10 Nm / ≤ 80 °C |
| Tube to housing | at higher temperatures no torsion allowed |
| Pipe sizes OD x wall thickness | 12 x 1 mm |
| Electrical connection | Integrated plug connection with PG9 coupling, 2 m oilflex cable 3 x 0,5 mm2 |
| Electrical Data | |
| Operating voltage | 18 to 30 VDC, incl. residual ripple |
| Current consumption | max. 150 mA (pulsed) |
| Power consumption | approx. 1 W |
| Switching current | ≤ 400 mA |
| Circuit protection | reverse polarity / short circuit / overload |
| Voltage drop | < 2 V at max. load |
| State of readiness | approx. 10 sec. after connection of power |
| Electrical output | |
| Switching condition with flow < switching point | energized, switched |
| LED | off |
| Switching condition with flow > switching point | currentless, not switched |
| LED | green |
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