Flow rates of gases - an important measurand in biogas plants
- Chamber head (fast response time)
- Flow and temperature signal
- Probe length 120 … 1,000 mm (optional special length)
- Remote sensor (optional)
- Measuring ranges 0 … 10 m/s to 0 … 220 m/s, special measuring range
- Special gas adjustment for different gases (optional)
- Pulse outputs
- ATEX:
- Gases, zone 2: II 3G Ex ec ic IIC T4 Gc
- Dust, zone 22: II 3D Ex ic tc IIIC T135°C Dc
- Pressure resistant up to 40 bar
- Temperature range +120 °C
The recording of flow rates in industrial processes is an important measure for energy saving, quality assurance in the production process, cost recording or distribution and much more.
The SCHMIDT® SS 20.600 Biogas especially adjustet for the use in biogas / sewage treatment plants.
- Industrial processes
- Waste handling technology
- Biogas productioin
Accessories
Connection technology
| Description | Article-Number |
|---|---|
| Connecting cable with coupler socket, 8-pole, length 5 m, open cable end | 524 921 |
| Connection cable with coupler socket, 8-pole, length selectable (2 … 100 m; 1m steps), cable end sleeves, free of halogen 1) | 524 942 |
| Coupler socket, 8-pole, with screw terminals for cable-ø 6 … 8 mm | 524 929 |
| Adapter cable M12, 8 <=> 4 pole, length 8 cm | 550 885 |
| 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 |
|---|---|
| Compression fitting, G½ | 535 092 |
| Compression fitting, R½ | 539 190 |
| Welding sleeve, steel, G½ acc. to EN 10241, 5 pieces | 524 916 |
| Welding sleeve, stainless steel 1.4571, G½, acc. to EN 10241, 2 pieces | 524 882 |
| Assembly kit for pipe assembly, suitable for 10.010 / 10.015, including pipe clamps and collar for adjustment to pipe diameter | 531 394 |
| Probe ball value 1" inside thread, connection to flow sensor: ½" inside thread incl. plug and chain | 530 940 |
| Probe ball value 1 ¼" inside thread, connection to flow sensor: ½" inside thread incl. plug and chain | 530 941 |
| Probe ball value 1 ½" inside thread, connection to flow sensor: ½" inside thread incl. plug and chain | 530 942 |
| Probe ball value 2" inside thread, connection to flow sensor: ½" inside thread incl. plug and chain | 530 943 |
| Straight-run probe ball valve ¾" inside thread, with threaded adapter for ½" full-length screw connection | 532 355 |
| Welded socket, steel, outside thread ¾", 5 pieces | 531 200 |
| Welded socket, stainless steel, outside thread ¾", 2 pieces | 531 201 |
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 |
1) Application of sensor in ATEX area only with original connection cable 524 921 or 524 942 and without communication modules
| Technical data | |
|---|---|
| Measuring quantity | Standard flow velocity wN based on standard conditions 1) Temperature of medium TM |
| Measured medium | Biogas, optional: Natural gas, CO2 and similar gas mixtures |
| Measuring range wN | 0 … 10 / 20 / 60 / 90 / 140 / 220 m/s Optional: Customised measuring ranges in 0.1 m/s steps |
| Lower detection limit wN | 0.2 m/s |
| Measuring range TM | -40 … +120 °C |
| Measuring accuracy | |
| Standard wN | ±(3 % of measured value + [0.4 % of fmr; min. 0.08 m/s]) 2) |
| Response time (t90) wN | 1 s (jump of wN from 0 to 5 m/s in air) |
| Temperature gradient wN | < 8 K/min (at wN = 5 m/s in air) |
| Temperature TM (wN > 2 m/s) | ±1 K (10 … 30 °C); ±2 K (in remaining measuring range) |
| Operating temperature | |
| Sensor | -40 … +120 °C |
| Electronics | -20 … +70 °C |
| Storage temperature | -20 … +85 °C |
| Material | |
| Housing | Aluminium, anodised |
| Sensor tube | Stainless steel 1.4571 |
| Sensor head | Platinum resistor element (glass-passivated), PPO / PA |
| Protective sleeve (ATEX) | Aluminium, anodised |
| Sensor cable (remote sensor) |
Jacket (PUR, halogen free, UL) |
| Compression fitting | Stainless steel 1.4571 or brass (depending on sensor option) |
| General Data | |
| Humidity | Measuring mode: Non-condensing (< 95 % RH) |
| Operating pressure (max.) | 40 bar |
| Display | 4 x Duo-LED (green/red/orange) |
| Supply voltage | 24 V DC ± 20 % |
| Current consumption | Typ. 80 mA (without pulse outputs); max. 250 mA (including signal current of all outputs) |
| Analog outputs Type: Auto U / I) |
wN, TM 0 … 10 V / 4 … 20 mA (switching of signal characteristic depends on RL) -Voltage output (0 … 10 V): RL ≥ 550 Ω (short-circuit protected) - Current output (4 … 20 mA): RL ≤ 500 Ω - Change-over hysteresis: 50 Ω - CL ≤ 10 nF |
| Pulse outputs: Signalization | Frequency: wN ~ f = 0 … fmax; fmax = 10 … 100 Hz Optional: 1 pulse/1 m3; 1 pulse/0.1 m3; 1 pulse/0.01 m3 (max. 100 pulses/s) |
| Pulse outputs: Technology | 1. Highside-driver (PNP, open collector) at protected supply voltage; not galvanically isolated) Short-circuit protected (analog): 100 mA High level: > supply voltage - 3 V Leckage current: IOFF < 10 µA 2. Semiconductor relay; output galvanically isolated Output voltage/current: Max. 30 V / 50 mA |
| Electrical connection | Plug-in connector M12 (A-coded), male, 8-pin (shielded), screwed ATEX approval only in combination with original cable! |
| Maximum cable length | Voltage interface / current interface / pulse outputs: 100 m Voltage mode: Use AGND and RL ≥ 10 k (mass offset) |
| Mounting position | Arbitrary (with vertical downdraft: lower detection limit = 2 m/s at 16 bar) |
| Mounting tolerance | ±3° relative to flow direction (unidirectional) |
| Minimum immersion depth | DN25 |
| Type of protection | Sensor probe: IP67; enclosure: IP65; electrical connector: IP67 (with correctly attached cable) |
| Class of protection | III / PELV (EN 50178) |
| ATEX category | Gas (zone 2): II 3G Ex ec ic IIC T4 Gc Dust (zone 22): II 3D Ex ic tc IIIC T135°C Dc |
| Probe length | Compact sensor: 120/250/400/600 mm; Special lengths from 120 to 1,000 mm Remote version: Sensor: 120/250/400/600 mm Cable: 1 … 10 m (in steps from 1 m) |
| Weight | Approx. 500 g max. (without connection cable) |
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