SCHMIDT Technology
Technical Data
Measurement value Standard velocity WN based on standard conditions of TN = 20 °C and pN = 1,013.25 hPa
Temperature of the medium TM
Medium to be measured Air or nitrogen, other gases upon request
Measuring range of flow wN 0 … 40 / 60 / 90 m/s
Smallest measurable flow velocity wN 0,2 m/s
Measuring accuracy
Standard wN ± 5 % of measured value + 0.4 % of measuring range
High precision calibration wN ± 3 % of measured value + 0.4 % of measuring range
Reproducibility wN ± 1.5 % of measured value
Response time (t90) wN 3 s (jump from 0 to 5 m/s)
Temperature gradient 8 K/min at 5 m/s
Temperature measuring range TM -20 … + 85 °C
Temperature measuring accuracy TM ± 1 K at wN > 2 m/s
Operating temperature
Sensor - 20 … + 85 °C
Electronics 0 … 70 °C
Material
Housing PBT, glass fiber reinforced
Sensor tube Stainless steel 1.4571
Sensor element Ceramics, passivated glass
Compression fitting Brass (G½) / stainless steel 1.4305 (R½)
Connecting cable PVC
General data
Operating pressure 0 … 10 bar
Gas state Non-condensing (up to 95% relative humidity)
Output signals 2 x 4 … 20 mA (RL ≤ 300 Ω, CL ≤ 10 nF)
Maximum cable length 100 m
Display LED green: Operating state
LED red: Sensor defective
Supply voltage 24 V DC ± 10 %, 60 mA
Stabilization time Approx. 10 s after switch-on
Connection Permanently connected cable, 4 cores, length 5 m, with cable end sleeves
Probe length 200 / 350 mm
Installation position Any (except in case of a downward
flow and < 2 m/s at the same time)
Mounting tolerance ± 3° to flow direction
Type of protection IP 66 / III or PELV

Subject to technical changes.