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SCHMIDT Flow Sensor SS 20.225

Производител: Schmidt
Product brochure (04/2024)
Instructions for Use (569899Rev0)
3D-STP data all dimensions
EU-Declaration of conformity (09/2022)
UK-Declaration of conformity (09/2022)

A small all-rounder – universal and powerful

  • Dumb-bell head (largely independent from flow direction, easy to clean)
  • Flow velocity and temperature signal
  • Probe length 100 … 500 mm
  • Measuring ranges 0 … 1 / 2.5 / 10 / 20 m/s
  • Optional coated (PU, black)

In many applications, the direct measurement of flow velocity and volume flow in air and gases is the ideal solution. Due to the high demands of modern control technology, the flow sensor has to measure precisely and fast an extremely wide measuring range from "almost zero" up to the maximum value.

  • Energy-efficient control of ventilators
  • Monitoring filter units
  • Regulation and control of flow rate for extraction systems
  • Industrial processes

Successor product for SS 20.015 and SS 20.016 (coated version but not pressure-resistant)

Accessories

Connection technology

DescriptionArticle-Number
Power supply unit: output 24 V / 1A DC, supply voltage 115/230 V AC (strip terminal) 535 282

Mounting and fixing technology

DescriptionArticle-Number
Mounting flange steel, galvanic zinc-plated 301 048
Compression fitting stainless steel G½, atmospheric pressure 532 160
Compression fitting brass G½, atmospheric pressure 517 206
Welded sleeve steel G½, according to EN 10241, 5 pieces 524 916
Welded sleeve stainless steel 1.4571 G½, according to EN 10241, 2 pieces 524 882
Adapter M18 x 1, G½ 545 090
Assembly kit for pipe assembly suitable for MD 10.010/10.015, including pipe clamps and collar for adjustment for the pipe diameter 531 394

Measured value display

DescriptionArticle-Number
SCHMIDT® LED display MD 10.010, in wall housing to show the volume flow velocity, 85 … 250 V AC and sensor power supply 527 320
SCHMIDT® LED display MD 10.010, similar to 527320 but with 24 V DC voltage supply 528 240
SCHMIDT® LED display MD 10.015, similar to 527320 but with additional sum function and second measuring input 527 330
SCHMIDT® LED display MD 10.015, similar to 527330 but with 24 V DC voltage supply 528 250

Miscellaneous

DescriptionArticle-Number
Attachable protective clip for dumbbell head against mechanical influences, stainless steel 531 026
Attachable protective 2-wires-clip for protection against mechanical influences,
stainless steel, H2O2-resistant
559 124
Technical data
Measuring quantity Standard flow velocity wN, based on standard conditions 1)
Temperature of medium TM
Measured medium Air or nitrogen, other gases upon request
Measuring range flow wN 0 … 1 / 2.5 / 10 / 20 m/s
Lower detection limit flow wN 0.06 m/s
Measuring range temperature TM -20 … +70 °C
Measuring accuracy
Standard wN ±(5 % of measured value + [0.4 % of fmr; min 0.02 m/s]) 2)
High precision (optional) wN ±(3 % of measured value + [0.4 % of fmr; min 0.02 m/s]) 2)
Response time (t90) wN 3 s (jump from 0 to 5 m/s in air)
Temperature gradient wN < 2 K/min (at wN = 5 m/s in air)
TM (wN > 1 m/s) ±1 K (10 … 30 °C); ±2 K (remaining measuring range)
Operating temperature
Sensor and electronics -20 … +70 °C
Storage temperature -30 … +85 °C
General data
Humidity Measuring mode: Non-condensing (< 95 % RH)
Operating pressure Atmospheric (700 … 1,300 hPa)
Display LED green: Operating status
LED red (flashing): sensor defective
Supply voltage 24 V DC ± 10 %
Current consumption Typ. < 60 mA (max. 100 mA)
Analog outputs for wN and TM 0 … 10 V (RL ≥ 10 kΩ, short circuit protected; CL ≤ 10 nF)
Electrical connection Standard: Non-detachable cable, 4 wires, length 2 m
Special cable length (option): 3 … 15 m (steps of 1 m)
Maximum cable length 15 m
Mounting position Arbitrary
Minimum immersion depth 58 mm (< 58 mm upon request)
Protection type Sensor head: IP67; enclosure: IP65
Protection class III (SELV or PELV)
Probe length 100/200/350/500 mm
Weight Approx. 100 g (L = 350 mm)
Material
Sensor tube Stainless steel 1.4571
Sensor head PBT (glass-fiber-reinforced), stainless steel 1.4571
Protective coating (optional) Polyurethan (PU)
Sensor cable PVC
Housing PBT (glass-fiber-reinforced)
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