Stationary use
Due to the economic solution with S 421 flow the consumption measurement of compressed air and process gases in branch pipes becomes attractive. This allows the monitoring of gas consumption to different production units.
Mobile use
The compact design and easy use allows the measurement of compressed air / gas at machine level. In the picture beside S 421 flow is connected to the air supply of a machine.
Product Features
- Easy and affordable installation
- Units freely selectable via keypad m³/h, m³/min, l/min, l/s, kg/h, kg/min, kg/s, cfm
- Compressed air counter up to 1,999,999,999 m³. Resettable to “zero” via keypad
- Analogue output 4…20 mA, pulse output (galvanically separated)
- High measuring accuracy also in the lower measuring range (ideal for leakage measurement)
- Negligibly small loss of pressure
- Thermal mass flow principle, no additional pressure and temperature measurement necessary
- Gas types adjustable via software (N2, O2, CO2, N2O, Ar)
Technical data
| Measured unit | m³/h, m³/min, l/min, cfm, m/s, kg/min, kg/h, kg/s (Reference standard can be programmed) Default values: * Air: Ps=1000 hPa, Ts=20 °C all other gases: Ps=1013 hPa, Ts=0°C |
| Accuracy | ± (2% of measured value + 0.3% full scale) Temperature drift: 0.05 % / K Pressure drift: 0.5 % / MPa |
| Stated accuracy at: | Ambient/process temperature 23 °C ± 3°C Ambient/process humidity < 90 %, no condensation Process pressure at 0.6 MPa |
| Process connection: | R thread(ISO 7-1), Flange EN 1092-1, ANSI / B16.5, JIS B2220 |
| Principle of measurement: | Thermal mass flow |
| Sensor: | Glass coated resistive sensor |
| Measuring Medium: | Air, N2, O2, Ar, N2O, CO2 |
| Operating temperature: | -30 to 50 °C -10 to 50 °C with local display |
| Operating pressure: | up to 1.6 Mpa up to 4.0 MPa (Optional) |
| Analogue output: | Signal: 4 to 20 mA Scaling: 0 to maximum volume flow Accuracy: 0.06 mA |
| Pulse output: | 1 pulse per consumption unit, insulated switch output, max. 30 VDC, 20 mA |
| Power supply: | 12-30 VDC, 2.4W |
| Display: | 128 x 64 pixel, with backlight |
| Material: | Measuring section: Stainless steel 1.4404 (sus 316L) |