Specifications
| 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: 15 m; Current / pulse interface: 100 m |
| 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) |
1) Standard conditions: TN = 20 °C and pN = 1,013.25 hPa
2) Related to adjustment reference; "fmr" = final measuring range
Subject to technical changes.
