BGN-S25-309BM0G0-0-S51-0-H by Heinrichs
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The Heinrichs BGN-S25-309BM0G0-0-S51-0-H is a variable area flow meter designed for vertical installation with a bottom-to-top flow direction, specifically configured for measuring air. It features a robust stainless steel model (1.4404-1.4571) with a DN25 PN40 form B1 EN1092-1 process connection and an overall length of 250 mm. The unit handles a display range of 4 to 38 Nm³/h at a process temperature of 20 °C and a process pressure of 0.625 bar, with a valve pressure resistance of 40 bar. Equipped with gas damping and a standard display part, it integrates one Pepperl + Fuchs SJ3.5-N NAMUR inductive proximity switch acting as a min/max electrical output. The device complies with multiple standards including DIN EN 60947-5-6 and ATEX directives for hazardous areas, offering a local measurement accuracy of +/- 2.0% according to VDI/VDE 3513-2.
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Characteristics
| Manufacturer | Heinrichs |
|---|---|
| Part number | BGN-S25-309BM0G0-0-S51-0-H |
| Inner Code | 4856834 |
Technical specification
| Product type | Variable Area Flow Meter for Air |
|---|---|
| Medium | air |
| Installation position | Vertical |
| Flow direction | from bottom to top |
| Display range | 4 - 38 Nm³/h |
| Density | 1.293 kg/m³ |
| Process temperature | 20 °C |
| Process pressure | 0.625 bar |
| Viscosity | 0.0171 mPa s |
| Standard measurement range BG water | 100-1000 l/h |
| Material | Stainless steel (1.4404-1.4571) |
| Process connection | DN25 PN40 form B1 EN1092-1 |
| Pressure resistance of the valve | 40 bar |
| Overall length | 250 mm |
| Damping | Gas damping |
| Electrical outputs | 1xMin or 1xMax |
| Inductive proximity switch | Pepperl + fox SJ3.5-N |
| Rated voltage | 8 V |
| Ambient temperature | -25... 100 °C |
| Ex marking | II 2G Ex ia IIC T6... T1Gb, II 2D Ex ia IIIC T135°C Db |
| Scale type | MB scale (medium) |
| Switch point 1 [MB] | MIN CONTACT, OPENER FALLING 20 |
| Measurement accuracy | +/- 2.0% of measurement value |