S 401 Flow/Consumption sensor (Insertion Type)
Features S 401
- Tube diameters of DN25 to DN500.
- 2 installation types: center installation and 100 mm insertion depth installation for bigger pipes (> DN250)
- Installation under pressure through 1/2” ball valve
Common Features S 401 & S 421
- Measures standard flow, mass flow, consumption and temperature
- Thermal mass flow, independent of pressure and temperature changes
- IP65 casing provides robust protection in rough industrial environment
- Very fast response time
- High accuracy and wide measuring range
- Isolated mA and pulse output signals or Modbus/RTU interface
- Selectable gas type (some gases require real gas calibration!)
- App for mobile phones and tablets for sensor settings via BlueTooth
- Sensor can be calibrated in 2 different gases
Volumetric flow ranges S 401
| Inch | DN | Di (mm) | S 401-S(m3/h) | S 401-M(m3/h) | S 401-H(m3/h) |
|---|---|---|---|---|---|
| 1” | DN25 | 27.3 | 0.5 … 147.7 | 0.6 … 294.7 | 0.6 … 356.9 |
| 1¼” | DN32 | 36.0 | 0.9 … 266.3 | 1.2 … 531.5 | 1.2 … 643.5 |
| 1½” | DN40 | 41.9 | 1.2 … 366.7 | 1.5 … 731.9 | 1.5 … 886.2 |
| 2” | DN50 | 53.1 | 2.0 … 600.1 | 2.5 … 1197.6 | 3.0 … 1450.0 |
| 2½” | DN65 | 68.9 | 3.5 … 1026.5 | 5.0 … 2048.6 | 5.0 … 2480.4 |
| 3” | DN80 | 80.9 | 5.0 … 1424.4 | 7.0 … 2842.7 | 7.0 … 3441.9 |
| 4” | DN100 | 100.0 | 10 … 2183.3 | 12 … 4357.2 | 12.0 … 5275.7 |
| 5” | DN125 | 125.0 | 13 … 3419.6 | 18 … 6824.4 | 18.0 … 8263.1 |
| 6” | DN150 | 150.0 | 18 … 4930.1 | 25 … 9838.9 | 25.0 … 11913.1 |
| 8” | DN200 | 200.0 | 26 … 8785.6 | 33 … 17533.3 | 42.0 … 21229.5 |
| 10” | DN250 | 250.0 | 40 … 13743.9 | 52 … 27428.5 | 60.0 … 33210.7 |
| 12” | DN300 | 300.0 | 60 … 19814.8 | 80 … 39544.1 | 100.0 … 47880.4 |
The table shows flow ranges up to 300 mm pipe diameter at standard conditions in air. At other standard conditions and in other gases flow ranges are different and data are available on request.In larger pipe diameters flow can also be measured.
| Technical data S 401/421 | |
|---|---|
| Accuracy | 1.5% of reading + 0.3% full scale Optional 1% of reading |
| Repeatability | 0.25% of reading |
| Sampling rate | 10 samples / sec |
| Reference conditions |
Can be set by user. Standard conditions are Ps = 0.1 MPa and Ts = 20 °C |
| Operating temperature |
-30 °C … +140 °C fluid temperature -30 °C … +70 °C casing -10 °C … +50 °C casing with display |
| Operating pressure |
S 401: 0 … 5.0 MPa (>1.6 MPa need installation device) S 421: 0 … 1.6 MPa |
| Analogue output |
Signal: 4 … 20 mA, isolated Scaling: 0 … max flow Max load: 250R |
| Pulse output | Signal:Isolated switch output, normally open, Max 30 VDC, 20 mA Scaling:1 pulse per consumption unit |
| Modbus/RTU | Isolated RS-485 with Modbus/RTU protocol |
| Power supply | 12 … 30 VDC / 200 mA |
| Wetted material | Stainless steel 1.4404 (SUS 316L) |