GFM 473 by Aalborg Instruments
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The Aalborg Instruments GFM 473 is a thermal mass flow meter featuring an aluminum sensor measuring body and a medium temperature range from 0°C to +50°C. It operates at a maximum operating pressure of 69 bar overpressure and requires a power supply of 12 to 26 VDC at 200 mA. The unit delivers a measurement range ratio of 1:50, with standard conditions set at 20°C and 1 bar abs. It achieves an accuracy of +/- 1% of the end value and a repeatability of +/- 0.25% of the final value, with a 2-second response time at 25% to 100%. Wetted parts in contact with media comprise aluminum, brass, stainless steel (316 SS), and Viton O-rings. Process connections utilize 2 x 3/8" cutting ring screw connections for approximately 9.5 mm pipe. It provides linear output signals of 4-20 mA and 0-5 VDC, and includes pressure and temperature compensation.
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Characteristics
| Manufacturer | Aalborg Instruments |
|---|---|
| Country | |
| Part number | GFM 473 |
| Inner Code | 4932402 |
Technical specification
| Product type | Thermal mass flow meter |
|---|---|
| Sensor measuring body | Aluminum |
| Medium temperature range | 0°C to + 50°C |
| Max. operating pressure | 69 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% of the end value of the measurement range |
| 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 (approx. 9.5 mm pipe) |
| Output signal | 4.. 20 mA and 0.. 5 VDC linear |