Cảm biến lưu lượng SS 20.400 SCHMIDT Technology GmbH Việt Nam

Cảm biến lưu lượng SCHMIDT® SS 20.400

Specifications

Technical data
Measuring quantity	Standard flow velocity w_N, based on standard conditions ¹⁾
Measured medium	Clean air or nitrogen, additional gases on request
Measuring range w_N	(±)0 … 1 / 2.5 / 5 / 10 / 20 m/s (uni- or bidirectional)
Lower detection limit w_N	(±)0.05 m/s
Measuring accuracy
Standard w_N	±(3 % of measured value + [2 % of fmr; min. 0.05 m/s]) ²⁾
High precision (optional) w_N	±(1 % of measured value + [2 % of fmr; min. 0.04 m/s]) ²⁾
Response time (t₉₀) w_N	1 s (configurable: 0.01 … 10 s)
Operating temperature
Sensor	0 … +60 °C
Storage temperature	-20 … +85 °C
Material
Sensor head	Stainless steel 1.4404
Sensor tube	Stainless steel 1.4404
Plug-in connector, nut screw	Stainless steel 1.4404
General data
Humidity	Measuring mode: Non-condensing (< 95 % RH)
Operating pressure	Atmospheric (700 … 1.300 hPa)
Supply voltage	12 … 26.4 V DC
Current consumption	Typical < 35 mA (max. 150 mA, current of switching outputs included)
Analog output w_N	0 … 10 V (R_L > 10 kΩ; C_L ≤ 10 nF; short-circuit protected) 4 … 20 mA (R_L < 300 Ω; C_L ≤ 100 nF)
Switching outputs	2 x open collector (at GND), current-limited and short-circuit protected, configurable -Channel 1 (OC1): Flow direction or threshold value – Channel 2 (OC2): Threshold value – External switching voltage / current: Max. 26.4 V DC / 55 mA (typ. 50 mA) – Hysteresis: 5 % of threshold value (min. ±0.05 m/s)