SCHMIDT Flow Sensors for Cleanroom

Product code	SS 20.515 / 516	SS 20.400 / SS 23.400	SS 20.415	SS 20.500
Application	Filter monitoring, Room monitoring	Flow direction (turbulence degree)	Flow direction (turbulence degree)	Filter monitoring, Room monitoring if corrosive medias are present
Sensor head	Dumb-bell head	Thermopile head	Thermopile head	Dumb-bell head
Measuring range	0,06 … 2,5 m/s	0,2 … 20 m/s	0,05 … 20 m/s	0,06 … 35 m/s
Medium temperature	-20 ... +85 °C	0 … +60 °C	0 … +60 °C	-20 … +85 °C
Moistness area	0 ... 95 % rF	0 ... 95 % rF	0 ... 95 % rF	0 ... 95 % rF
Specials	SS 20.515 for disinfection with H2O2 (VHP)   SS 20.516 for disinfection with alcohol (with coating)	Bi-directional flow sensor Switching outputs Measurement of turbulence degree Self monitoring function Detection of contamination ATEX version for Ex-secured areas	Disinfection with H2O2 and alcohols Bi-directional flow sensor Switching outputs Measurement of turbulence degree Self monitoring function Detection of contamination	Disinfection with H2O2 and alcohols Protection against corrosion e.g.: - hydrochloric acid - caustic soda - acetone High precision adjustment
Mounting	Sealing (stainless steel) - Counternut - Screw adapter - Shanknut - Flange bushing	Easy one-hole-mounting	Screwed bush M25 (stainless steel) Quick mounting system - Counternut - Screw adapter - Shank nut - Flange bushing	Mounting lengths from 100 to 1.000 mm available
Output signals	0 ... 10 V 0 ... 20 mA 4 ... 20 mA	0 ... 2 V 0 ... 5 V 0 ... 10 V 0 ... 20 mA 4 ... 20 mA	0 ... 2 V 0 ... 5 V 0 ... 10 V 0 ... 20 mA 4 ... 20 mA	Auto UI 4 … 20 mA ↔ 0 … 10 V

Application examples:

Cleanroom supervision – monitoring

• Detection of flow velocity, supervision of filter leakage, control of flow velocity
• Detection of turbulence degree for estimation of laminarity of cleanroom flow
• Supervision of flow direction (in case of decrease of pressure or reduction of flow velocity beyond production times

Energy saving and efficiency through

Higher measurement accuracy for efficient reduction of the flow velocity beyond production times (higher accuracy compared to stationed pressure measurement)

Plant monitoring

• Supervision of plant integrated filter units
• Control of exhaustion processes with corrosive media
• Determination of turbulence degrees within one plant

Pharmaceutical Industry

• Integration in cleanroom-monitoring (Annex1 GMP-guidelines)
• Charge release in case of decrease of pressure through documentation of flow direction

Semi-conductor Industry

• Flow monitoring if corrosive process media is present
• Filter monitoring in clean machines