Weber Sensors 4121.53M Flow-Captor Flow Switch with LED Display, Measuring Range of 0-20 to 0-300 cm/sec in Oil System, IP67 Protection
- Part #:4121.53M
- Model #:Flow-Captor
- Condition:Brand New

The flow-captor is ideally suited for use in automation processes or other industrial applications where liquid media must be controlled. The sensor operates according to the calorimetric (thermal) measuring principle, fully electronic and without any mechanically moving parts. The flow-captor detects the flow velocity of the medium and converts it into an electrical signal.
Features:
- Precise switching flow monitor with solid state relay output (SSR)
- High switching accuracy even with slower flows
- Separate adjustment of set-point and range
- Display of flow and the adjusted switching point via LED chain
- LED for output status
- Robust stainless steel design (special potting)
- ISO 9001:2015
- Specification Sheet
- Manuals/Tutorials
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| Medium | oil-based |
| Sensor Data | |
| Measuring range | 0 - 30 cm/s bis 0 - 300 cm/s, continuously adjustable |
| Set-point range | approx. 15 % - 90 % of range setting |
| Medium temperature | -20 °C bis +80 °C |
| Ambient temperature | -20 °C bis +70 °C |
| Pressure | max. 100 bar (1000 Kpa) |
| Response time | 2 sec. - 15 sec. depends on range setting |
| Linearity deviation | < 5 % |
| Repeatability tolerance | < 2 % |
| Hysteresis | approx. 10 % |
| Temperature drift | < 3 % per kelvin |
| Mechanical Data | |
| Protection class | IP67 |
| Material: Housing | stainless steel AISI 303 or equivalent |
| Sensor head | stainless steel AISI 303 or equivalent |
| Sensor head size, thread | G 1/2" |
| Electrical connection | 2 m oilflex cable 4 x 0.75 mm2 |
| Electrical Data | |
| Operating voltage | 90 - 250 VAC/DC |
| Switching current | max. 100 mA at 90 - 250 VAC/DC |
| Initial operation | approx. 10 sec. after connection power |
| Electrical output | solid state relay (SSR) |
| Flow < set-point | LED off |
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