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Sophisticated Air Flow Tester AF-R220


Optimum for testing discharge flow and airtightness.
Flow sensor is selectable from Laminar Flow or Mass Flow

Edge & Function

Easy-to-navigate configuration with icons, each menu opens by simply touching an icon

Test pressure and flow can be monitored in charts

Language is selectable among English, Japanese, Chinese and Spanish

Test result analysis is available

Test result can be easily stored in USB memory

Display of Equivalent flow rate at 1 atm, 20℃ (when option K is selected, the actual atmospheric pressure is automatically measured for the calculation)

Flow Check (F-CHK) as standard feature

Flow Optimizer. When test pressure fluctuates, the flow at the specified test pressure is displayed

Application Examples

Take advantages of 2 different flow sensor

Laminar Flow Sensor
*Wide variety of ranges (F.S. 10mL/min to 100L/min)
*Allows measurement of discharge flow rate of pulsative parts such as pumps
*Durable and robust with no moving part

Mass Flow Sensor
*Allows measurement with different/variable test pressure
*No temperature compensation required
*No atmospheric compensation required
*High response speed

With USB port available, data collection or data back-up can be easily carried out

Main features
*Test data collection
*Waveform data collection
*Parameter backup/restore
*System backup/restore
*Copy CSV to USB
*Software version update
*Copy Operation manual

Display Display6Measurement screen is selectable from 6 different screens Data Acquisition Up to 5000 data are stored. USB can be used for data storing
Test Reliability Sensor Protection The pneumatic circuit is cleaned at the end of every flow test Data Analysis Counter, Statistics, Waveform display
User Span Span value is either manually entered or automatically setup
Blow Check After the flow test, the fill valve is opened to check if there is flow or not
Exhaust Interference Prevention Exhaust timing will be controlled for the cases where multiple tests are preformed at the same time
Digital Filter Averages the readings for more stable readings with less variation
C-CHK The flow is compared with the values of Flow master
Equivalent Flow Display The flow rate when air is flown in an environment of 1 atm at 20℃. When the option K is selected, this feature can be automatically used
F-CHK The measured flow is compared with the value of Flow master in every test (Option: CX)
Flow Limits Upper limits (UL2/UL), Lower limits (LL2/LL)
Flow Optimizer Formula Optimize Samples the flows at Target Test Press(P1) to display the optimized flow DET Extension When the flow is in the range between "S-DET LL and S-DET LL2" or "S-DET UL and S-DET UL2", DET stage will be repeated
Two-Point Optimizer Samples the flows at two pressure points, Target Test Press(P1) and Off-Target Test Press(P2), to optimize the measured flow when the test pressure is off target Option Features External exhaust valve (Exhaust valve unit is sold separately)
Multi-Point Optimizer Samples the flow at Target Test Press(P1) and other multiple pressure points within the allowable range to optimize the flow when the test pressure is off target Bypass circuit ready (Bypass circuit unit is sold separately)


Pressure media Air Connecting port Pressure source, Pilot pressure:Rc 1/4
Laminar Flow model 100L only: Rc 3/8

WORK port:200L/min or less: Rc 1/4
500L/min or less: Rc 1/2

Accuracy *Laminar Flow Sensor
±1.5% of F.S. ±1 digit (At specified pressure)
*Mass Flow Sensor
±1.5% of F.S. ±1 digit (At specified pressure)
±3% of F.S. ±1 digit (At non-specified pressure)
CPU ARM9  400 MHz,  DRAM 128 MB
RS-232 Front panel port Fixed length output: T, IL, ML, D, P
Specified test pressure range Micro (L01): 1 to 10kPa (Regulator is not enclosed)
Micro low (L03): 10 to 30kPa (Mass Flow only)
Micro low (L05): 10 to 50kPa (Laminar Flow only)
Low (L): 30 to 80kPa
Medium (M): 3to 700kPa
Vacuum (V): -10 to -70kPa (20L or less)
Rear panel port Fixed length output: T, IL, ML, D, P
Test Data Flow, Pressure, Comp value, Air temp, Flow limits, Atm press, and others
CSV Copy to USB CSV file
USB Port Parameter backup
System backup
Software version update
Copy Operation manual (PDF)
Channels 32ch (0~31)
Power supply AC100 to 240V ±10%, 50/60Hz, 60VA max
(Power cable included is for AC125V only)
Flow Unit L/min, mL/min, L/s, mL/s, L/h, m3/h, USP(User Span)
Timer setting 999.9 sec (min 0.1sec)
Pressure Unit kPa, MPa, (psi, kg/cm2, bar, mbar, mmHg, cmHg, inHg, mmH2O)
Pressure source Clean and dry air. Pressure source should be higher than the test pressure
Standard and accessories Quick connection fittings, I/O connector, Power cable (3m), Inspection record, and Operation manual
Ambient temperature 5 to 45℃
Humidity Max. 80%RH and no condensation
Weight Approx. 15kg



A      Flow Sensor
Mass Flow Sensor Laminar Flow Sensor
F3 F4


B      Flow Sensor Range
Mass Flow Sensor range 500ML 2L 5L 20L 50L 100L  
Laminar Flow Sensor range 10ML 20ML 50ML 100ML 200ML 500ML 1L 2L 5L 10L 20L 30L 50L 100L


C      Test Pressure range
Test Pressure Micro Micro-low Micro-low Low Medium Vacuum
Test Pressure range 1 ~ 10kPa 10 ~ 30kPa 10 ~ 50kPa 30 ~ 80kPa 30 ~ 700kPa -10 ~ -70kPa
Code L01 L03
Mass Flow only
Laminar Flow only
  • Regulator is no enclosed for L01


D      Option
B1 Built-in Bypass Circuit Effective for large-volume parts. Pressurize the tested part during CHG stage. FR Dual Range Calibration (For F4 only) L range and U range calibrations are available for 1L or higher ranges
G1 Built-in Exhaust Valve Exhaust valve is set in the tester. Prevents testes from oils and dusts W Stop Valve Monitoring Checks open/close of stop valve
F Dual Pressure ( Bypass circuit unit is sold separately) Reduces pressurization time by applying a pressure higher than the test pressure for a predetermined period of time (or to a target pressure) during CHG. A Filter Option Filter with Auto-drain
C Secondary Flow Measurement The flow coming out of the tested part is measured and judged. K Atmospheric Pressure Sensor (For F4 only) The atmospheric pressure is automatically captured with a high performance atmospheric pressure sensor and compensated
R1 Dual Pressure EP Regulator connector F Specify this option when EP regulator is selected in option F PX2 Battery Option Rechargeable battery. The rechargeable battery does not conform to CE
CX Automatic CAL Check Automatically checks sensitivity with flow master  


E      Flow Rage F      Test Pressure
Mass Flow Sensor Laminar Flow
Flow Range Test Pressure Flow Range Test Pressure
Code Flow Rage Positive Pressure Negative Pressure Code Flow Rage Positive Pressure Negative Pressure
500ML 0 ~ 500 mL/min 10 ~ 700kPa -10 ~ -70kPa 10ML 0 ~ 10 mL/ min 10 ~ 700kPa -10 ~ -70kPa
2L 0 ~ 2 L/min 10 ~ 700kPa -10 ~ -70kPa 20ML 0 ~ 20 mL/ min 10 ~ 700kPa -10 ~ -70kPa
5L 0 ~ 5 L/min 10 ~ 700kPa -10 ~ -70kPa 50ML 0 ~ 50 mL/ min 10 ~ 700kPa -10 ~ -70kPa
20L 0 ~ 20 L/min 10 ~ 700kPa -10 ~ -70kPa 100ML 0 ~ 100 mL/ min 10 ~ 700kPa -10 ~ -70kPa
50L 0 ~ 50 L/min 10 ~ 700kPa 200ML 0 ~ 200 mL/ min 10 ~ 700kPa -10 ~ -70kPa
100L 0 ~ 100 L/min 10 ~ 700kPa 500ML 0 ~ 500 mL/ min 10 ~ 700kPa -10 ~ -70kPa
*     Select the flow range from the lists shown above

*     Specify the test pressure within each pressure range

*     Consult Cosmo for unspecified ranges

1L 0 ~ 1 L/min 10 ~ 700kPa -10 ~ -70kPa
2L 0 ~ 2 L/min 10 ~ 700kPa -10 ~ -70kPa
5L 0 ~ 5 L/min 10 ~ 700kPa -10 ~ -70kPa
10L 0 ~ 10 L/min 10 ~ 700kPa -10 ~ -70kPa
G      Conversion temperature 20 L 0 ~ 20 L/min 10 ~ 700kPa -10 ~ -70kPa
30 L 0 ~ 30 L/min 10 ~ 700kPa
20 °C 0 °C 50 L 0 ~ 50 L/min 10 ~ 500kPa
S N 100 L 0 ~ 100 L/min 10 ~ 500kPa