SCHMIDT® Flow Sensors for air condition and ventilation systems

For measurements in air condition and ventilation systems the thermic
SCHMIDT® Flow Sensors provide many benefits:

• Direct detection of norm flow velocity independent of pressure and temperature
• For tube diameters DN 25… DN 1.000 or rectangular because of channels with feed size up to 2 m
• Low maintenance and wearless – no moving parts
• Ideally suitable for energy efficient controlling via wide measuring ranges
• Relatively insensible against contamination
• 2 in 1: Sensors are additionally available with temperature measurement

Product code	SS 20.015/016	SS 20.200/201	SS 20.260	SS 20.500
Sensor head	Dumb-bell head	Dumb-bell head	Chamber head	Dumb-bell head
Measuring range	0,06 … 20 m/s	0,06 … 20 m/s	0,2 … 50 m/s	0,06 … 35 m/s
Mediumstemperatur	-40 ... +85 °C	-40 ... +85 °C	-40 ... +85/120 °C	-40 ... +85 °C
Temperaturmessung	yes	—	yes (option)	yes
Medium	Clean or dusty air	Clean or dusty air	Relatively clean air	Clean or dusty air
Tube diameter	100 ... 1.000 mm	100 ... 1.000 mm	25 ... 1.000 mm	100 ... 2.000 mm
Aggressive air content	yes (SS 20.016)	yes (SS 20.201)	—	yes, option with coating
Output signals	2 x 0 ... 10 V	Switching output (flow monitor)	0 ... 10 V or 4 … 20 mA	Auto- U/I (automatic switch V↔ I)
Supply voltage	24 V DC ± 20 %	24 V DC ± 20 %	24 V DC ± 20 %	24 V AC/DC ± 20 %

Application examples:

• Control of supply- / exhaust air in channels and rooms
• Ventilation control to optimize energy consumption
• For exact measurement of smallest flow velocities during control of volume flow
• Filter monitoring in air supply systems