SCHMIDT® Flow Sensor SS 20.600 (Biogas)
SCHMIDT® Flow Sensor SS 20.600 (Biogas)
SCHMIDT® Flow Sensor SS 20.600 (Biogas)
SCHMIDT® Flow Sensor SS 20.600 (Biogas)
SCHMIDT® Flow Sensor SS 20.600 (Biogas)
SCHMIDT® Flow Sensor SS 20.600 (Biogas)
SCHMIDT® Flow Sensor SS 20.600 (Biogas)
SCHMIDT® Flow Sensor SS 20.600 (Biogas)
SCHMIDT® Flow Sensor SS 20.600 (Biogas)
SCHMIDT® Flow Sensor SS 20.600 (Biogas)

SCHMIDT® Flow Sensor SS 20.600 (Biogas)

Flow rates of gases - an important measurand in biogas plants

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Introduction Technical Data

SCHMIDT® Flow Sensor SS 20.600 (Biogas)

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

SCHMIDT Technology – Simply a question of better measurement

Technical data
Measuring quantity

Standard flow velocity wN based on standard conditions

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])
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 probe -40 … +120 °C
Electronics -20 … +70 °C
Storage temperature -20 … +85 °C
 

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
Protection type Sensor probe: IP67; enclosure: IP65; electrical connector: IP67 (with correctly attached cable)
Protection class 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
Sensor 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)
 

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 Jacket (PUR, halogen free, UL)
Compression fitting Stainless steel 1.4571 or brass (depending on sensor option)
 

Dowloads
Product brochure (04/2024) Dowload PDF
Instructions for Use (535084.02D) Dowload PDF
Instructions for ATEX (535698.02C) Dowload PDF
Quick start guide (536020.02D) Dowload PDF
3D-STP data Dowload
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Flow rates of gases – an important measurement in industrial processes.