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DFA100FSM – Dynamic Foam Analyzer

Time-dependent analysis of bubble size in liquid foams

The FSM Foam Structure Module for the DFA100 captures the bubble size and size distribution of foam using intelligent video image analysis. The results help you to produce foam with the shape you want it to have. They also show the decay of long-lasting foam, long before it actually collapses, thus supporting you in optimizing foam stability.

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  • Foams for washing and cleaning
  • Foams in food and personal care products
  • Surfactant development
  • Flotation as a method for separating solids

ACCESSORIES

Prism column with reference grid for foam structure analyses

Short prism column for structure analyses with any foaming method

Sealing rings for different foaming methods and liquids (for sample holder predecessor models)

Sealing rings for different foaming methods and liquids (for sample holder predecessor models)

Sealing rings for different foaming methods and liquids (for sample holder predecessor models)

Sealing rings for different foaming methods and liquids (for sample holder predecessor models)

Sealing rings for different foaming methods and liquids (for sample holder predecessor models)

Sealing rings for different foaming methods and liquids

Sealing rings for different foaming methods and liquids

Sealing rings for different foaming methods and liquids

INSTRUMENT DIMENSIONS

Footprint 245 mm × 275 mm (W × D)
Height 460 mm
Weight (without accessories) 13 kg

TEMPERATURE MEASUREMENT

Sensor PT100
Range of temperature measurement 4 to 90 °C
Resolution 0.1 °C
Precision 0.1 °C
Accuracy 1/3 DIN B (±0.1 °C at 0 °C / ±0.8 °C at 400 °C)
Location of temperature measurement inside sample liquid
External sensor optional

POWER SUPPLY

Voltage 100 to 240 V
Power consumption 30 W
Frequency 50 to 60 Hz

SAMPLE DIMENSIONS

Min. recommended sample volume 50 mL with 40 mm diameter column

ENVIRONMENT

Operating temperature 15 to 30 °C
Humidity without condensation

TEMPERATURE CONTROL

Type of temperature control optional: double-walled glass column
Range of temperature control 10 to 60 °C
(additional thermostat needed: TB14)
Resolution –

INTERFACES

PC 1× USB 2.0
1× USB 3.0

ACCESSORIES

Glass columns 40 mm diameter, temperature control option
Filter plates for sparging diameter: 30 mm
Filter plate porosities G1: nominal maximum pore size: 100 to 160 μm
G2: nominal maximum pore size: 40 to 100 μm
G3: nominal maximum pore size: 16 to 40 μm
G4: nominal maximum pore size: 10 to 16 μm
Material of columns and frits borosilicate glass (norm: ISO 4793)
Material of columns and filters –
Material of sealings silicone and FKM
Receiver –

PRESSURE MEASUREMENT

Precision ADVANCE

SAMPLE STAGE

Travel distance 0.1 °C

DRIVE

DATA OUTPUT

CAMERA SYSTEM

Diameter of minimum detectable bubble 50 µm
Mean field of view size position 1: 285 mm2
position 2: 140 mm2
position 3: 85 mm2
Focus manual

LINE SENSOR

Maximum measurable height –
Sensor resolution 1728×1px
Spatial resolution 200 dpi | 0.125 mm
Temporal resolution 20 fps
Scanning length 216 mm

OPERATING SYSTEM

Internal gas flow rate 0.2 to 1 L/min
External gas flow rate 0.05 to 1 L/min
Approved gases air
nitrogen
carbon dioxide
Approved pressure 5 ± 0.5 bar
Approved temperature 4 to 90 °C
Stirring speed up to 8000 rpm

CAMERA SYSTEM (STANDARD)

Connection USB 3.0
Performance 2 fps at 1280 × 1024 px

ELECTRODES

Material –
Highest sensor position –
Measured entity –
Theoretical measurement range –

ILLUMINATION

Type LED
Wave length, dominant –
Wave length, dominant (height detection) 469 nm (optional IR: 850 nm)
Wave length, dominant (structure detection) 633 nm

SOFTWARE

Software type ADVANCE
Available software modules foam analysis

BUBBLE PRESSURE

Precision (surface tension) 15 to 30 °C

MEASUREMENT SPECIFICATIONS

Measurement type –
Analyzed foam characteristic foamability and foam stability
foam structure: homogeneity, stability and aging
Foaming –
Resolution –
Results foam height
liquid height
total height
foam capacity
maximum foam density
expansion rate
foam half life time
drainage half life time
sample temperature
mean bubble area
bubble count per mm²
standard deviation of mean bubble area
bu

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