ACCU ACU10FA Analog Thermal Mass Flow Controller / Meter
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ACCU ACU10FA Analog Thermal Mass Flow Controller / Meter
ACCU
The ACCU ACU10FA series is an analog thermal mass flow controller and flow meter for gases. It combines a mass flow sensor, a laminar flow element, a control valve and an amplification/control circuit. Using the calorimetric principle, it measures the temperature difference along a heated capillary to determine the gas mass flow, so readings are not affected by changes in gas temperature or pressure.
The sensor signal is amplified and compared with the setpoint voltage, and the difference drives the control valve in a closed loop. With pure analog input and output, the ACU10FA is easy to integrate with existing secondary instruments, flow computers and PLCs.
Key features
- Thermal principle with fast response and high accuracy
- Bypass (tubular shunt) design, resistant to clogging
- Suitable for low- and high-pressure lines (3 MPa / 10 MPa)
- Short warm-up time, minimal zero drift, high reliability
- Analog I/O (0–5 V / 4–20 mA), compatible with secondary meters and flow computers
Applications
Glass industry, atmospheric monitoring, industrial manufacturing, petrochemicals, solar energy, coal and metallurgy, gas production and distribution, environmental protection, instrumental analysis.
| Technical specifications | |
| Flow range | Low 5 SCCM – 30 SLM / Middle 30 – 150 SLM |
| Accuracy | ±1.0% F.S. |
| Linearity / Repeatability | ±0.5% F.S. / ±0.2% F.S. |
| Response time | Controller <2 s / Meter <1.5 s |
| Temperature coefficient | ±0.015% F.S./°C |
| Working temperature | 0 – 50 °C |
| Working pressure | Controller: differential 0.05 – 0.5 MPa / Meter: pressure drop <30 kPa |
| Max. pressure | 3 MPa / 10 MPa |
| Leak rate | 1×10-9 Pa·m³/s |
| Body / seals | Stainless steel / Fluororubber (Viton), Neoprene, NBR |
| Connections | Low: 3, 6 mm, 1/8", 1/4" · Middle: Ø8, Ø10, Ø12 |
| Electrical connection | DB9 female |
| Analog signals | 0–5 V, 4–20 mA |
| Power supply | ±15 VDC or 24 VDC |
Configuration options (pressure rating, range, gas, signals, power supply, seals, fittings) are selected in the order code. Contact us for a quotation specifying your gas and flow range.
