SCHMIDT Technology
Technical Data
Technology design Thermal inline flow sensor
Medium Clean air, nitrogen, other gases on request
Measuring range V̇N SS 30.300: 0,25 … 76,3 m3/h
SS 30.301: 0,80 … 229 m3/h
SS 30.302: 1,50 … 417 m3/h
SS 30.303: 3,00 … 712 m3/h
Operating temperature TM 0 … +60 °C
Accuracy
Accuracy flow V̇N +/-(3 % of m.v. + 0,3 % of full scale) (air quality class 141)
Measured value damping AP

0 / 0.2 / 0.4 / 0.6 / 0.8 / 1 s (default: 0.6 s)

Measurement accuracy TM +/- 2 K (Maximun volume flow)
Operating temperature
Sensor 0 … +60 °C
Electronics 0 … +60 °C
Storage temperature -20 … + 70 °C
Material
Housing PBT, glass fiber reinforced
Sensor tube Stainless steel 1.4301
Sensor element Ceramic, glass passivated
General data
Medium Non-condensing (< 90 % rF)
Maximum pressure 16 bar
Display 4-digits LED display, 7-segments, 7mm hoch, red
Supply voltage 19 … 30 V DC
Current consumption < 100 mA (without output load)
Output 1 (OUT 1) Switching output, impulse output
Output 2 (OUT 2) Switching output 4…20mA
Configuration switching
output
Switching values/ range/ hysteresis/ opener/ closer
Layout digital output PNP highside-dreiber (at UB)
Imax = 250 mA; ΔUDrop < 2 V
Working resistance 4 … 20 mA (RL ≤ 500 Ω)
Electrical connection Plug-in connection M12,4-pins, male
Maximum length 100 m
Einbaulage beliebig
Protection class IP65 / III or PELV
Construction SS 30.300: Inside-Ø: 16,1 mm; Outside: DN 15 / R½; length: 300 mm
SS 30.301: Inside -Ø: 27,3 mm; Outside: DN 25 / R1; length: 475 mm
SS 30.302: Inside -Ø: 39 mm; Outside: DN 40 / R1½; length: 475 mm
SS 30.303: Inside -Ø: 54 mm; Outside: DN 50 / R2; length: 475 mm

Subject to technical changes.