Volume flow measurement
Measurement of the volume flow, especially in dusty applications. Easy installation on existing ducts, no Venturi or similar conversions are required. Can be used in environments with low dust loads or in harsh conditions with e. g. high temperature or high dust loads.
AirFlow P is the perfect measuring device for volumetric flow measurement at positions where differential pressure measurements can not be used due to excessive dust loading or where duct conversions are not possible or desirable.
Volume flow measurement especially in dusty applications
New high temperature version available, suitable for applications up to 800 °C
- Reliable measured values even in dusty applications
- Easy to retrofit
- No calibration necessary
- Output in operating cubic meters
- Suitable for all diameters and geometries
- No venturi (constriction) needed
- Suitable for applications up to 800 °C
- Cement
- Chemistry
- Energy
| Technical Specifications | |
|---|---|
| Material to measure | Dust |
| Working principle | Electrodynamic |
| Process temperature standard version | -20 … +150 °C |
| Process temperature high temperature version | -20 … +800 °C |
| Mounting | Weld on socket, TriClamp |
| Type of Conveying | Air transport |
| Flow rates | Up to 20 g/m³ |
| Pipe diameter | Independend |
| ATEX rating | No |
| Output | Relay, analogue output |
| Technical Data | |
|---|---|
| Sensor | |
| Power supply | 24 V DC, fed by evaluation unit |
| Measuring range | from 1 mg/m³ |
| Speed range | 1 m/s … 100 m/s |
| Process temperature standard version | -20 … +150 °C |
| Process temperature high temperature version | -20 … +800 °C |
| Ambient temperature | -20 … +60 °C |
| Housing material | Aluminium |
| Sensor rod material | Stainless steel |
| Protection type | IP65 |
| Dimensions | 220 x 840 x 120 mm (W x H x D) |
| Weight | 5.5 kg |
| Evaluation unit (DIN Rail) | |
| Power supply | 24 V DC ± 10 % |
| Power consumption | 20 W / 24 VA |
| Protection type | IP40 to EN 60 529 |
| Ambient operating temperature | -10 … +45 °C |
| Dimensions | 23 x 90 x 118 mm (W x H x D) |
| Weight | Approx. 172 g |
| DIN rail fastening | DIN 60715 TH35 |
| Connection terminals cable cross-section | 0.2 – 2.5 mm² [AWG 24-14] |
| Current output | 1 x 4 … 20 mA (0 … 20 mA), load < 500 Ω (Active) |
| Interface | Modbus RTU (RS 485) / USB |
| Pulse output | Open Collector – max. 30 V, 20 mA |
| Relay contact | Max. rated load: 250 V AC Max. peak current: 6 A Max. rated load 230 V AC: 250 VA Max. breaking capacity DC1: 3/110/220 V: 3/0.35/0.2 A Min. switching load: 500 mW (10 V / 5 mA) |
| Data backup | Flash Memory |
| Evaluation unit (field housing) | |
| Power supply | 110 / 230 V AC 50 Hz (optional 24 V DC) |
| Power consumption | 20 W / 24 VA |
| Protection type | IP65 to EN 60 52910.91 |
| Ambient operating temperature | -10 … +45 °C |
| Dimensions | 258 x 237 x 174 mm (W x H x D) |
| Weight | Approx. 2.5 kg |
| Interface | RS 485 (Modbus RTU) / USB |
| Cable screw connectors | 3 x M20 (4.5 – 13 mm Ø) |
| Connection terminals cable cross-section | 0.2 – 2.5 mm² [AWG 24-14] |
| Current output | 3 x 4 … 20 mA (0 … 20 mA), load < 500 Ω (Active) |
| Pulse output | Open Collector – max. 30 V, 20 mA |
| Relay contact | Max. rated load: 250 V AC Max. peak current: 6 A Max. rated load 230 V AC: 250 VA Max. breaking capacity DC1: 3/110/220 V: 3/0.35/0.2 A Min. switching load: 500 mW (10 V / 5 mA) |
| Data backup | Flash Memory |
If the area of the duct is stored on the evaluation unit, the AirFlow P system supplies a signal at the analogue output cubic metres per hour (v x A).
By using the latest technologies, it is possible to measure a volume flow with the AirFlow P in clean gas ducts with a dust loading of only a few mg/m3.
It is also possible to use the AirFlow P as a pure speed measuring device, e. g. in order to keep the actual material velocity constant.
