SCHMIDT Technology
Technical Data
Measurement size wN Normal velocity wN referred to standard conditions of TN = 20 °C and pN = 1,013.25 hPa
Measurement medium Clean air, nitrogen, additional gases on request
Measurement ranges flow wN 0 … 1 / 2.5 / 10 m/s
Max. display range wN + 10 % above measurement range
Lower detection threshold wN 0.05 m/s
Measurement precision
Default 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 0.01 … 10 s (configurable), 1 s factory sett.
Temperature gradient wN <2 K/min at 5 m/s
Operational temperature
Operating temperature 0 … + 60 °C
Storage temperature - 20 … + 85 °C
Material
Sensor head Aluminium, anodized
Sensor tube Stainless steel 1.4571
Plug connector Stainless steel 1.4571
General data
Medium, environment Non condensating (up to 95 % rh)
Operating pressure Atmospheric (700 … 1,300 hPa)
Supply voltage Typ. 24V dc (12 … 26.4 V DC)
Power consumption Typ. 30 mA / max. 160 mA
Analog output 0 … 10 V (RL ≥ 10 kΩ) or 4 … 20 mA (RL ≤ 300 Ω protected against short-circuit
Switching outputs 2 open collectors, current-limited and protected against short circuits
(<26.4 V DC / 65 mA)
Channel 1 (OC1): direction or threshold value
Channel 2 (OC2): threshold value
Switching hysteresis 5 % of the threshold value, min ± 0.05 m/s
Error signal Only with 4…20 mA output: 2mA (according to NAMUR NE43)
Connection Connector M9, screwed, 7-pin, male
Maximum line length Tension signal: 15 m, Power signal: 100 m
Mounting position In the vertical flow direction
Protection type/
Protection class
IP 65 / III or PELV
Sensor length 270 x 300 mm (angular), 300 mm or customer-specific until 1000 mm (straight)
Weight Approx. 200 g (angular version)

1) under reference conditions

Subject to technical changes.