Product model finder

SCHMIDT® Flow Sensors for Compressed Air

For measurements in compressed air systems the thermic SCHMIDT® Flow Sensors provide many benefits:
- Direct detection of norm flow velocity independent of pressure and temperature
- For tube diameters DN 15 ... DN 1.000
- Installation and removal during production and under pressure possible
- Very high flow velocities up to 220 m/s (also for undersized tubes)
- Very small measuring range limit of 0.2 m/s for detection of leakage
 
Which sensor is suitable for which application?
For measurements in compressed air systems either Insertion- or Inline-sensors can be used.
 

Product code	SS 20.600
Sensor type	Insertion sensor
Tube diameter	DN 25 bis DN 800
Max. volume flow m³/h	500.000 (DN 800)
Max. pressure	40 bar
Display	4-point LED or external
	LED-display (SS 20.031)
Working temperature	-20 … +120 °C
Output signals	Auto-U/I (automatic switch V↔ I) impulse output optional
Supply voltage	24 V DC ± 20 %

 

Product code	SS 20.261
Sensor type	Insertion sensor
Tube diameter	DN 25 – DN 600
Max. volume flow m³/h	74.300 (DN 700)
Max. pressure	10 bar
Display	1 green LED,
	1 red LED
Working temperature	-20 … +85 °C
Output signals	4 … 20 mA
Supply voltage	24 V DC ± 20 %

 

Product code	SS 30.300 … 30.303
Sensor type	Inline-Sensor
Tube diameter	with integrated probe tube
	DN 15 / 25 / 40 / 50
Max. volume flow m³/h	75 / 228 / 417 / 712
Max. pressure	16 bar
Display	Integrated LED-display
Working temperature	0 … +60 °C
Output signals	1 x 4 … 20 mA or switching output
	1 x switch-/Impulse output
Supply voltage	24 V DC ± 20 %

 

Application examples:

Accounting and contracting
- Measurement of compressed air consumption

Saving of energy and efficiency through
- Detection of leakages
- Optimal compressor controlling

Plant and machine monitoring
- Avoid production loss
- Optimizing processes
- Perform-conditioned maintenance
 

SCHMIDT® Flow Sensors for Industrial Processes

For supervision and control in industrial processes the thermic SCHMIDT® Flow Sensors provide many benefits:
- Direct detection of norm flow velocity independent of pressure and temperature
- Highly accurate and reproducible – documented by ISO – calibration certificates
- Available in ATEX-version for use in explosion-protected environments
- Sensors with dumb-bell head and special coating are suitable for dusty and / or aggressive gases
- Applicable up to +350 °C medium temperature
- Suitable in different gases and gas mixtures – up to 40 bar overpressure
 
Which sensor is suitable for which application?

Product code	SS 20.200
sensor head	dumb-bell head
Measuring range	0.06 … 20 m/s
Medium temperature	-20 … +85 °C
Temperature measurement	–
Medium	clean or dusty gases gase
Aggressive Media	yes, optional coating
ATEX	no
Max. pressure	10 bar
Output signals	switching output (flow monitor, galvanic separated)
Supply voltage	24 V DC ± 20 %

 

Product code	SS 20.260
sensor head	chamber head
Measuring range	0.2 … 50 m/s
Medium temperature	-20 … +85 / 120 °C
Temperature measurement	yes (optional)
Medium	relatively clean gases (not aggressive)
Aggressive Media	no
ATEX	no
Max. pressure	atmosph.
Output signals	0 ... 10 V or
	4 ... 20 mA
Supply voltage	24 V DC ± 20 %

 

Product code	SS 20.261
sensor head	chamber head
Measuring range	0.2 … 90 m/s
Medium temperature	-20 … +85 °C
Temperature measurement	yes
Medium	relatively clean gases (not aggressive)
Aggressive Media	no
ATEX	no
Max. pressure	10 bar
Output signals	4 ... 20 mA
Supply voltage	24 V DC ± 20 %

 

Product code	SS 20.500
sensor head	dumb-bell head
Measuring range	0.06 … 50 m/s
Medium temperature	-40 … 85 °C
Temperature measurement	yes
Medium	clean or dusty gases gase
Aggressive Media	yes, optional coating
ATEX	Option
	(cat. 3GD, zone 2)
Max. pressure	10 bar
Output signals	Auto-U/I
	(automatic switch V↔ I)
Supply voltage	24 V AC/DC ± 20 %

 

Product code	SS 20.600
sensor head	chamber head
Measuring range	0,2 … 220 m/s
Medium temperature	-20 … +120 °C
Temperature measurement	yes
Medium	relatively clean gases (also burnable gases)
Aggressive Media	no
ATEX	Option
	(cat. 3GD, zone 2)
Max. pressure	40 bar
Output signals	Auto-U/I (automatic switch V↔ I) impuls output (optional)
Supply voltage	24 V DC ± 20 %

 

Product code	SS 20.650
sensor head	chamber head
Measuring range	0.2 … 60 m/s
Medium temperature	0 … +200 / 350 °C
Temperature measurement	yes
Medium	relatively clean gases (not aggressive)
Aggressive Media	no
ATEX	no
Max. pressure	16 bar (optional)
Output signals	0 ... 10 V or
	4 ... 20 mA, Impulse
Supply voltage	24 V DC ± 20 %

 

Product code	SS 23.400
sensor head	thermopile head
Measuring range	0.05 … 20 m/s
Medium temperature	0 … 60 °C
Temperature measurement	–
Medium	clean gases (not aggressive)
Aggressive Media	no
ATEX	yes
	(cat. 3G, zone 2)
Max. pressure	atmosph.
Output signals	0 ... 10 V or
	4 ... 20 mA, 2 x switching output (OC)
Supply voltage	7.5/12 ... 26.4 V DC

 

Application examples

Industrial oven and burner:
- Supply air control
- Burnable gas – combustion regulation
- Control recirculation

Machine and plant building
- Supply and exhaust air control
- Drying air control
- Dust exhaustion

Chemical industry:
- Determination of gas amount
- Safety exhaustion

Paper / Print / Textile:
- Drying process control during surface coating
- Exhaustions

Food:
- Exhaustion in packaging
- Cold air control
 

SCHMIDT® Flow Sensors for Cleanroom

For measurements in cleanrooms the thermic SCHMIDT® Flow Sensors provide many benefits:
- Direct detection of flow velocity from 0.05 m/s
- Cleanroom suitable – no moving parts, no grit (IP65 – IP67 degree of protection)
„- Hygienic Design“ – easy cleanable dumb-bell head, disinfectable, hydrogen-peroxide resistant, suitable for VHP (Vaporized Hydrogen Peroxide) -method
- In compliance with requirements of ISO 14644 regarding measuring range
„- Bi-directional sensor“ enables the identification of over flow direction even during decrease of pressure
- ISO-calibration protocol available – enables requirements of pharmaceutical industry
- Easy to integrate in monitoring systems through variable data interfaces
- Corrosion protection, resistant against aggressive process media (acid, brine, solvent)

Which sensor is suitable for which application?
There are special SCHMIDT® Flow Sensors for use in cleanroom and hygienic environments available:

Product code	SS 20.250
Application	Filter monitoring, supply and exhaust control
Sensor head	Dumb-bell head
Measuring range	0,06 … 20 m/s
Medium temperature	-20 ... +70 °C
Moistness area	0 ... 95 % rF
Specials	SS 20.515 for disinfection with
	H2O2 (VHP)
Mounting	Mounting lengths from 300 / 500 mm available
Output signals	Auto UI
	4 … 20 mA ↔
	0 … 10 V

 

Product code	SS 20.515
Application	Filter monitoring, Room monitoring
Sensor head	Dumb-bell head
Measuring range	0,06 … 10 m/s
Medium temperature	0 ... +60 °C
Moistness area	0 ... 95 % rF
Specials	SS 20.515 for disinfection with
	H2O2 (VHP)
	SS 20.516 for disinfection with alcohol (with coating)
Mounting	Screwed bush
	M25 (stainless steel)
	Quick mounting system
	- Counternut
	- Screw adapter
	- Shank nut
	- Flange bushing
Output signals	0 ... 10 V
	4 ... 20 mA

 

Product code	SS 20.400 / SS 23.400
Application	Flow direction (turbulence degree)
Sensor head	Thermopile head
Measuring range	0,05 … 20 m/s
Medium temperature	0 … +60 °C
Moistness area	0 ... 95 % rF
Specials	Bi-directional flow sensor
	Switching outputs
	Measurement of turbulence degree
	Self monitoring function
	Detection of contamination ATEX version for Ex-secured areas
Mounting	Easy one-hole-mounting
Output signals	0 ... 10 V
	4 ... 20 mA

 

Product code	SS 20.415
Application	Flow direction (turbulence degree)
Sensor head	Thermopile head
Measuring range	0,05 … 20 m/s
Medium temperature	0 … +60 °C
Moistness area	0 ... 95 % rF
Specials	Disinfection with H2O2 and alcohols
	Bi-directional flow sensor
	Switching outputs
	Measurement of turbulence degree
	Self monitoring function Detection of contamination
Mounting	Screwed bush
	M25 (stainless steel)
	Quick mounting system
	- Counternut
	- Screw adapter
	- Shank nut
	- Flange bushing
Output signals	0 ... 10 V
	4 ... 20 mA

 

Product code	SS 20.500
Application	Filter monitoring, Room monitoring if corrosive medias are present
Sensor head	Dumb-bell head
Measuring range	0,06 … 50 m/s
Medium temperature	-20 … +85 °C
Moistness area	0 ... 95 % rF
Specials	Disinfection with H2O2 and alcohols
	Protection against corrosion e.g.:
	- hydrochloric acid
	- caustic soda
	- acetone
	High precision adjustment
Mounting	Mounting lengths from 100 to 1.000 mm available
Output signals	Auto UI
	0 … 10 V
	4 … 20 mA ↔

 

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
 

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

Which sensor is suitable for which application?

Product code	SS 20.200
Sensor head	Dumb-bell head
Measuring range	0,06 … 20 m/s
Mediumstemperatur	-20 ... +85 °C
Temperaturmessung	—
Medium	Clean or dusty air
Tube diameter	100 ... 1.000 mm
Aggressive air content	yes, option with coating
Output signals	Switching output (flow monitor)
Supply voltage	24 V DC ± 20 %

 

Product code	SS 20.250
Sensor head	Dumb-bell head
Measuring range	0,06 … 20 m/s
Mediumstemperatur	-20 ... +70 °C
Temperaturmessung	—
Medium	Clean or dusty air
Tube diameter	100 ... 1.000 mm
Aggressive air content	yes, option with coating
Output signals	Auto- U/I (automatic switch V↔ I)
Supply voltage	24 V AC/DC ± 20 %

 

Product code	SS 20.260
Sensor head	Chamber head
Measuring range	0,2 … 50 m/s
Mediumstemperatur	-20 ... +120 °C
Temperaturmessung	yes (option)
Medium	Relatively clean air
Tube diameter	25 ... 1.000 mm
Aggressive air content	—
Output signals	0 ... 10 V or
	4 … 20 mA
Supply voltage	24 V DC ± 20 %

 

Product code	SS 20.500
Sensor head	Dumb-bell head
Measuring range	0,06 … 50 m/s
Mediumstemperatur	-40 ... +85 °C
Temperaturmessung	yes
Medium	Clean or dusty air
Tube diameter	100 ... 2.000 mm
Aggressive air content	yes, option with coating
Output signals	Auto- U/I (automatic switch V↔ I)
Supply voltage	24 V AC/DC ± 20 %

- 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