SCHMIDT Technology
Technical Data
Measurement values Standard velocity WN based on standard conditions of TN = 20 °C and pN = 1,013.25 hPa Temperature of the medium TM (optional)
Medium be measured Air or nitrogen, other gases upon request
Measuring range of flow wN 0 … 2,5 / 10 / 20 / 40 / 50 / 60 m/s
Lower detection limit wN 0,2 m/s
Temperature TM measuring range -20 … +120 °C
Measuring accuracy
Standard wN ± (5 % of measured value + [0.4 % of final value; min. 0.02 m/s])
High precision wN (option) ± (3 % of measured value + [0.4 % of final value; min. 0.02 m/s])
Reproducibility wN ± 1,5 % of measured value
Response time (t90) wN 3 s (jump from 0 to 5 m/s)
Temperature gradient wN < 8 K/min at 5 m/s
Measuring accuracy TM (wN> 2 m/s) ± 2 K (remaining measuring range)
Operating temperature
Probe -20 … +120 °C
Electronics 0 … +70 °C
Storage temperature -20 … +85 °C
Material
Sensor head Platinum element, glass passivated; PPO/PA
Sensor tube Stainless steel 1.4571
Housing PBT, glassfiber reinforced
Connecting cable PVC
General Data
Medium environment Non-condensing (up to 95 % of relative humidity)
Operating pressure Atmospheric (700 … 1.300 hPa)
Display LED green: operating status
LED red: sensor defective
Supply voltage 24 V DC ± 10 %
Current consumption < 60 mA
Output signals wN 0 … 10 V (RL ≥ 10 kΩ) 4 … 20 mA (RL ≤ 300 Ω)
Connection Permanently connected cable, 4-pins, length 2 m, with cable end sleeves
Admissible cable length 15m max. (voltage output)
100m max. (current output)
Installation position Any
Installation tolerance ± 3° to the flow direction
Minimum immersion depth DN 25
Ingress protection IP 65 / III or PELV
Probe length L 50 / 100 / 200 / 350 / 500 mm
Weight 200 g max.

1) under reference conditions

Subject to technical changes.