- Chamber head (fast response time)
- Flow and temperature signal (optional)
- Probe length 50 … 500 mm
- Measuring ranges 0 … 10 m/s to 0 … 60 m/s
- Temperature range +120 °C
SCHMIDT Technology offers a price sensitive flow sensor under the designation SS 20.260, which is characterised by its compact and rugged design. With a measuring range up to 60 m/s and its linear output signal, it is an universal sensor for measuring flow velocity, volume flow or mass flow under atmospheric conditions. The sensor element is well protected against mechanical stress by the impact resistant chamber head. Via two LEDs, the sensor indicates whether the supply voltage is sufficient and if it works properly.
- Industrial processes
- Flow measurement in air ducts
- Control of combustion air in oil, coal, wood or gas burners
- Ventilation and air conditioning
Accessories
Connection technology
| Description | Article-Number |
|---|---|
| Power supply unit: output 24 V / 1A DC, supply voltage 115/230 V AC (strip terminal) | 535 282 |
Mounting and fixing technology
| Description | Article-Number |
|---|---|
| Mounting flange, galvanized steel | 301 048 |
| Compression fitting, brass, G½, atmospheric pressure | 517 206 |
| Welding sleeve, stainless steel, G½, according to EN 10241, 2 pieces | 524 882 |
| Press fitting, stainless steel, G½, atmospheric pressure | 539 746 |
| Welding sleeve steel, G½, according to EN 10241, 5 pieces | 524 916 |
| Assembly kit for pipe assembly suitable for MD 10.010/10.015, including pipe clamps and collar for adjustment to pipe diamter | 531 394 |
Measured value display
| Description | Article-Number |
|---|---|
| LED-display MD 10.010; in wall housing to show volume flow and flow velocity, 85 … 250 V AC and sensor power supply | 527 320 |
| LED- display MD 10.010; similar to 527 320, similar to 527 320 but with 24 V DC voltage supply | 528 240 |
| LED- display MD 10.015; similar to 527 320, similar to 527 320 but with an additional sum function and a second measuring input | 527 330 |
| LED- display MD 10.015; similar to 527 330 but with 24 V DC voltage supply | 528 250 |
| Technical data | |
|---|---|
| Measuring quantity | Standard flow velocity wN based on standard conditions 1) Temperature of medium TM (optional) |
| Measured medium | Air or nitrogen, other gases upon request |
| Measuring range wN | 0 … 2.5 / 10 / 20 / 40 / 50 / 60 m/s |
| Lower detection limit wN | 0.2 m/s |
| Measuring range TM (optional) | -20 … +120 °C |
| Measuring accuracy | |
| Standard wN | ±(5 % of measured value + [0.4 % of fmr; min. 0.02 m/s]) 2) |
| High precision (optional) wN | ±(3 % of measured value + [0.4 % of fmr; min. 0.02 m/s]) 2) |
| Response time (t90) wN | 3 s (jump from 0 to 5 m/s) |
| Temperature gradient wN | < 8 K/min (at wN = 5 m/s in air) |
| TM (wN > 2 m/s) | ±1 K (0 … 40 °C); ±2 K (remaining measuring range) |
| Operating temperature | |
| Sensor probe | -20 … +120 °C |
| Electronics | -20 … +70 °C |
| Storage temperature | -20 … +85 °C |
| Material | |
| Sensor head | Platinum element (glass passivated); PPO/PA |
| Sensor tube | Stainless steel 1.4571 |
| Enclosure | PBT (glass-fibre reinforced) |
| Sensor cable | PVC |
| General data | |
| Humidity | Measuring mode: Non-condensing (< 95 % RH) |
| Operating pressure (max.) | Atmospheric (700 … 1,300 hPa) |
| Display | LED green: Operating status LED red (flashing): Sensor defective |
| Supply voltage | 24 V DC ± 10 % |
| Current consumption | < 60 mA |
| Analog output | Short circuit protected; load capacity CL ≤ 10 nF |
| - Standard: wN | 1 x 0 … 10 V (RL ≥ 10 kΩ) or 4 … 20 mA (RL ≤ 300 Ω) |
| - Option: wN and TM | 2 x 4 … 20 mA (RL ≤ 300 Ω) |
| Electrical connection | Non-detachable cable, 4 x 0.14 mm2, with ferrules: - Standard: Length 2 m - 0.2 m length with M12 connector (male, A-coded, 4-pole, screwed) - Special length: 3 … 100 m (step: 1 m) |
| Maximum cable length | 100 m Variant without TM-output: Tension mode using AGND and RL ≥ 10 kΩ (minimizing mass offset) |
| Mounting position | Arbitrary |
| Mounting tolerance | ±3° relative to flow direction (unidirectional) |
| Protection type | Sensor probe: IP65; enclosure: IP64; plug-in connection: IP67 (with attached connection cable) |
| Protection class | III (SELV or PELV) |
| Probe length | 50/100/200/350/500 mm |
| Weight | 200 g max. |
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