Thermal flow sensor for uni- or bidirectional measurement of air and gases with simultaneous detection of flow direction.
- Thermopile head (very fast response time)
- Flow velocity and switching signals
- Probe length straight version:
- Default: 300 mm
- Special length (option): > 300 … 1,000 mm (step: 10 mm)
- Probe length of angled version: 150 / 270 mm x 300 mm
- Measuring ranges 0 … 1 / 2.5 / 10 m/s
- Bidirectional measurement (optional)
- Optimized adjustment for LF-applications (optional)
- Extremely compact (electronics are integrated in probe tube)
- Sensor element protected against mechanical stress
- Linear analog output for measured flow velocity
- Two switching outputs to signal flow direction and threshold
- Operating status indication and serial number are visible, even when sensor is installed
- Special version for laminar-flow monitoring in cleanrooms with quick-mounting system for simple installation beneath ceilings or at walls
Option: Monitoring of admissible speed interval (prescribed by official standards) of 0.45 m/s ± 20 % with optical signaling at the sensor (LF status indicator)
- Laminar flow monitoring in cleanrooms
- Flow monitoring in pharmaceutical production, semiconductor manufacturing, food production, LCD manufacturing and optical industry
- Integration into insulators, FFUs and flow boxes
Accessories
Connection technology
| Description | Article-Number |
|---|---|
| Coupler socket, 7-pin with soldering sleeves for cable Ø 0.14 mm² | 535 278 |
| Connection cable with coupler socket, 7-pin, 5 m length, open cable ends, material PUR | 535 279 |
| Connection cable with coupler socket, 7-pin, length selectable (2 … 100 m; 1 m steps), open cable ends | 505 911 - 4 |
| Connection cable with angled socket, 7-pin, 10 m length, open cable ends, material PUR | 535 281 |
| Power supply unit: output 24 V / 1A DC, supply voltage 115/230 V AC (strip terminal) | 535 282 |
Mounting and fixing technology
| Description | Article-Number |
|---|---|
| Assembly kit for pipe assembly suitable for MD 10.010/10.015 including pipe clamps and collar for adjustment to pipe diameter | 531 394 |
Measured value display
| Description | Article-Number |
|---|---|
| LED display MD 10.010 in wall housing to show volume flow and flow velocity, 85 … 250 V AC and sensor power supply | 527 320 |
| LED display MD 10.010, similar to 527 320 but with 24 V DC voltage supply | 528 240 |
| LED display MD 10.015, similar to 527 320 but with additional sum function and second measuring input | 527 330 |
| LED display MD 10.015, similar to 527 330 but with 24 V DC voltage supply | 528 250 |
Miscellaneous
| Description | Article-Number |
|---|---|
| Calibrator MK 40.415 - Set (8 / 12 / 16 mA) | 546 741 - 4 |
| Technical data | |
|---|---|
| Measuring quantity | Standard flow velocity wN, based on standard conditions 1) |
| Measured medium | Clean a orr, nitrogen, additional gases on request |
| Measuring range wN | (±)0 … 1 / 2.5 / 10 m/s (uni- or bidirectional) |
| Max. display range wN | +10 % above measuring range |
| Lower detection limit wN | (±)0.05 m/s |
| Measuring accuracy | |
| Standard wN | ±(3 % of measured value + 0.05 m/s) 2) |
| High precision (optional) wN | ±(1 % of measured value + 0.04 m/s) 2) |
| Response time (t90) wN | 1 s (configurable: 0.01 ... 10 s) |
| Operating temperature | |
| Sensor | 0 … +60 °C |
| Storage temperature | -20 … +85 °C |
| Material | |
| Sensor head | Stainless steel 1.4404 |
| Sensor tube | Stainless steel 1.4404 |
| Plug connector, nut screw | Stainless steel 1.4404 |
| Light ring | PC |
| General data | |
| Humidity | Measuring mode: Non-condensing (< 95 % RH) |
| Operating pressure (max.) | Atmospheric (700 … 1,300 hPa) |
| Supply voltage | 24 V DC ± 10 % |
| Current consumption | Typ. 35 mA / max. 150 mA (including all signal output currents) |
| Analog output wN | 0 … 10 V (RL > 10 kΩ; CL ≤ 10 nF; short-circuit protected) 4 … 20 mA (RL < 300 Ω; CL ≤ 100 nF) |
| Switching outputs | 2 x open collector (at GND), current-limited and short-circuit protected, configurable -Channel 1 (OC1): Flow direction or threshold value - Channel 2 (OC2): Threshold value - External switching voltage / current: Max. 26.4 V DC / 55 mA (typ. 50 mA) - Hysteresis: 5 % of threshold value (min. ±0.05 m/s) (<26.4 V DC / 65 mA) Channel 1 (OC1): direction or threshold value Channel 2 (OC2): threshold value Switching hysteresis 5 % of the threshold value, min ± 0.05 m/s |
| Error signal | Only current interface: 2 mA (according to NAMUR NE43) |
| Electrical connection | Plug-in-connector M9, male, 7-pin (shielded), screwed |
| Maximum cable length | Voltage interface: 10 m; current interface: 100 m |
| Mounting position | Straight: ±3° relative to flow direction (uni- or bidirectional) Angled: Vertical downdraft flow (per design |
| Protection type | IP65; electrical connector: IP67 (with correctly attached cable) |
| Protection class | III (SELV or PELV) |
| Sensor length | Angled: 150/270 mm (vertical) x 300 mm (horizontal) Straight: Standard 300 mm; special length >300 … 1,000 mm |
| Weight | Approx. 200 g (angled design with 270 mm x 300 mm) |
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