SCHMIDT® Flow Switch SS 20.200
| Technical Data | |
|---|---|
| Measurement values wN | Standard flow velocity wN normalized to TN; 20 °C and pN; 1,013.25 hPa |
| Measuring fluid | Air, nitrogen, other gases on request |
| Measuring range wN | 0 … 1 / 10 / 20 m/s |
| Threshold wN | 0.1 m/s up to the end of measuring range |
| Accuracy | |
| Switching hysteresis wN | ± 5 % of threshold; min. 0.1 m/s |
| Setting threshold wN | Potentiometer (270°), optionally pre-programmed |
| Accuracy threshold pre-programmed | ± (3 % of measuring value + 0.1 m/s) |
| Repeatability wN | ± (2 % of threshold + 0.1 m/s) |
| Response time (t90) wN | 3 s (jump from 0 to 5 m/s air) |
| Switch-on delay | 20 s |
| Temperature gradient wN | < 2 K/min at 5 m/s |
| Operating temperature | |
| Sensor | - 20 °C … + 85 °C |
| Electronics | - 20 °C … + 70 °C |
| Storage temperature | - 20 °C … + 85 °C |
| Material | |
| Housing | PBT, fibre-glass reinforced |
| Sensor tube | Stainless steel 1.4571 |
| Sensor head | PBT, fibre-glass reinforced, aluminium anodized |
| Protective coating | Polyurethane derivative |
| Connecting cable | PVC |
| General Data | |
| Medium environment | Non-condensing (up to 95 % rF) |
| Operating pressure | 0 … 10 bar |
| Display | LED green: operating status LED red: switching status |
| Supply voltage | 24 V DC ± 20 % |
| Current consumption | Type <70 mA |
| Switching output | Semiconductor relais; max. 30 V / 100 mA / 300 mW ; RON, max = 25 Ω |
| Electrical connection | Permanently connected cable, 4-pin, length 2 m |
| Admissible cable length | >100 m max. |
| Mounting position | Any |
| Minimum inmersion | >58 mm (< 58 mm on request) |
| Protection class | Housing: IP 65, Sensor head: IP 67 / III or PELV |
| MTTF-Wert (per 01.01.2011) | > 50 years |
| Sensor length | 100 / 200 / 350 / 500 mm |
| Weight | Approx 100 g (L = 350 mm) |
Technical data subject to change.
