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SCHMIDT Laminar-Flow Sensor SS 20.715 LED

Производител: Schmidt
Product brochure (07/2025)
Instructions for use (572137.02)
EU-Declaration of conformity (01/2024)
UK-Declaration of conformity (01/2024)
3D-STP data (all versions)
Supplementary instructions for use of digital communication - Modbus (575477.02)

Robust validation of laminar flow

Thermal flow sensor for validation of laminar flow applications.

  • Robust validation of laminar flow applications
  • Sensor elements completely encapsulated in stainless steel
  • Easy to clean nd resistant against H2O2
  • GMP-compliant, robust design
  • ‚Plug and Play’ combined with quick assembly
  • Precise measurement of low flow velocity [wN]
  • Straight and angled design for wall and ceiling mounting
  • Probe length straight version: 300 mm
  • Probe length angled version: 150 / 270 mm x 300 mm
  • Measuring ranges 0 … 1 / 2.5 / 10 m/s
  • Cleanroom sensor
  • Extremely compact (electronics integrated in sensor tube)
  • Linear analog outputs for measured values output
  • Digital interface: Modbus (RTU)
  • 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 a ceiling systems or at walls
  • 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

To activate and program the Modbus function, an Interface Splitter and a PC Programming Kit are necessary (accessory).

Accessoroes

Connection technology

DescriptionArticle-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

DescriptionArticle-Number
Assembly kit for pipe assembly suitable for MD 10.010/10.015, including pipe clamps and collar for adjustment for pipe diameter 531 394

Measured value display

DescriptionArticle-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 an additional sum function and a second measuring input 527 330
LED display MD 10.015, similar to 527 330 but with 24 V DC voltage supply 528 250

Miscellaneous

DescriptionArticle-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)
Temperature of medium TM
Measured medium Clean a or nitrogen, additional gases on request
Measuring range wN 0 … 1 / 2.5 / 10 m/s
Max. display range wN +10 % above measuring range
Lower detection limit wN 0.1 m/s
Measuring range TM -20 … +70 °C
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 15 s
Temperatur TM (wN > 0.3 m/s) ±1 K (10 ... 30 °C); ±2 K (remaining measuring range)
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 tbd
Analog outputs wN & TM 0 … 10 V (RL ≥ 10 kΩ; short-circuit protected)
4 … 20 mA (RL ≤ 300 Ω>br> CL ≤ 10 nF
Error signal Only with current interface: 2 mA (according to NAMUR NE43)
Electrical connection Plug-in-connector M9, male, 7-pin (shielded), screwed
Maximum cable length Voltage interface / current interface: 100 m
Voltage mode: Use AGND and RL ≥ 10 k (mass offset)
Mounting position Straight: ±3° relative to flow direction (unidirectional)
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: 300 mm
Weight Approx. 280 g (angled design with 270 mm x 300 mm)
Digital interface Modbus (RTU); RS485 (EIA-485), 2-wire, 3.3 V
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