The ASF1400 Bidirectional Mass Flow Meter enables extremely accurate bidirectional measurement of gas flow over four orders of magnitude. Its leading performance is based on SENSIRION’s unsurpassed CMOSens® sensor technology.
The ASF1400 mass flow meter uses Sensirion's CMOSens® sensor technology to provide highly accurate, fast, and temperature‑compensated bidirectional gas flow measurements over four orders of magnitude. The on‑chip sensor integrates amplification and A/D conversion, delivering low power consumption and excellent resolution.
The device offers both RS‑232 and SPI digital interfaces, a supply voltage of 7‑18 V DC, and can be configured via a set of serial commands. It is housed in a rugged PBT enclosure, tolerates up to 2 bar overpressure, and is available with optional higher‑pressure packages and custom electrical interfaces.
| Dynamic range | 0.01 – 400 sccm |
|---|---|
| Supply voltage | 7 – 18 V DC |
| Ambient operating temperature | 0 °C to 70 °C |
| Overpressure resistance | 2.0 bar |
| RS‑232 baudrate | 9600 baud |
The ASF1400 operates from a supply voltage of 7 V to 18 V DC.
The device provides both RS‑232 and SPI digital interfaces for data communication.
It can measure bidirectional gas flow from 0.01 sccm up to 400 sccm.
By using a bypass configuration with the evaluation kit EK‑F1, the range can be increased.