The Aalborg GFM 573 is a thermal mass flow meter designed for accurate gas measurement, with available measurement ranges from 0-100 l/min to 0-200 l/min, based on nitrogen at 20°C and 1 bar absolute. This system is working pressure and temperature-compensated. It features an aluminum sensor measuring body and wetted parts consisting of aluminum, brass, stainless steel (316 SS), and Viton O-rings. The unit operates within a medium temperature range of 0°C to +50°C and handles a maximum operating pressure of 34.5 bar overpressure. It operates on a power supply of 12 - 26 VDC (200 mA) and provides linear output signals of 4-20 mA and 0-5 VDC. The process connection utilizes 2 x 3/8" cutting ring screw connections for approximately 9.5 mm hose or pipe. It delivers a measurement range ratio of 1:50, a response time of 2 seconds at 25% to 100%, a repeatability of +/- 0.25% of the final value, and an accuracy of +/- 1.5% at 15°C to 25°C and 0.35 bar to 4.1 bar abs (otherwise +/- 3%).
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| Manufacturer | Aalborg Instruments |
|---|---|
| Country | |
| Part number | GFM 573 |
| Inner Code | 4932416 |
| Product type | Aalborg Thermal Mass Flow Meter |
|---|---|
| Sensor measuring body | Aluminum |
| Medium temperature range | 0°C to + 50°C |
| Max. operating pressure | 34.5 bar overpressure |
| Power supply | 12 - 26 VDC (200 mA) |
| Measurement range ratio | 1:50 |
| Standard conditions (N) | 20°C and 1 bar abs. |
| Accuracy | +/- 1.5% of the final measurement range value at 15°C to 25°C and 0.35 bar to 4.1 bar abs. otherwise +/- 3% of the end value |
| Repeatability | +/- 0.25% of final value |
| Response time | 2 seconds at 25% to 100% |
| Parts in contact with media | Aluminum, brass, stainless steel (316 SS) and Viton O-rings |
| Process connection | 2 x 3/8" cutting ring |
| Screw connection | For approx. 9.5 mm hose or pipe |
| Measurement ranges | 0 - 150 l/min or 0 - 200 l/min (also 0-100 l/min to 0-200 l/min) |
| Output signal | 4.. 20 mA and 0.. 5 VDC linear |