SCHMIDT Technology
Technical Data
Measuring quantity wN Standard flow velocity wN normalized to TN = 20 °C and pN = 1.013.25 hPa
Measuring medium Air, nitrogen, other gases on request
Measuring range flow wN 0 … 1 / 2,5 / 10 m/s
Lower detection limit wN 0,06 m/s
Meas. range temperature TM - 20 … + 70 °C
Accuracy
Standard wN ± (3 % of the measured value + 0.05 m/s) 1)
High precision (optional) wN ± (1 % of the measured value + 0.04 m/s) 1)
Repeatability wN ± 1.5 % of the measured value
Response time (t90) wN 3 s (jump from 0 to 5 m/s)
Temperature gradient wN <2 K/min at 5 m/s
Measuring accuracy TM
( wN > 2 m/s)
± 1 K (10 … 30 °C); ± 2 K remaining measuring range
Operating temperature
Operating temperature - 20 … + 70 °C
Storage temperature - 30 … + 85 °C
Material
Sensor head PBT fibre-glass reinforced, stainless steel 1.4571, protective coating (optional)
Sensor tube Stainless steel 1.4571
Connector Stainless steel 1.4571
General Data
Medium environment Non-condensing (up to 95 % rF)
Operating pressure Atmospheric (700 … 1.300 hPa)
Supply voltage 24 V DC ± 10 %
Current consumption typ. 80 mA / max. 120 mA
Analog outputs for wN and TM 0 … 10 V (RL ≥ 10 kΩ) and 4 … 20 mA (RL ≤ 300 Ω)
Error signal At 4 … 20 mA-output: 2 mA
Electical connection Connector M9, screwed, 7-pin, male
Maximum cable length Voltage output: 15 m, current output: 100 m
Mounting position In vertical flow direction
Protection class IP 65 / III or PELV
Sensor length Angled: 270 mm (vertical) x 300 mm (horizontal)
Straight: standard 300 mm; special length from 300 … 1000 mm
Weight Approx 200 g (angled design)

1) under reference conditions

Subject to technical changes.