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DFA100 – Dynamic Foam Analyzer

The universal instrument for all aspects of liquid foam.

Many questions about foam, one universal approach: The DFA​100 Dynamic Foam Analyzer measures the foamability of liquids and the stability of quickly decaying or long lasting foam based on reproducible foaming and height detection. With optional modules operating in parallel, it also measures the liquid content or analyzes the foam structure with regard to bubble size and distribution. The DFA100 supports you in optimizing foam-forming products or helps you to avoid unwanted foam formation.

Category: Tags: , , Brand:

  • Firefighting foams
  • Flotation as a method for separating solids
  • Foam prevention for paints and varnishes, process and waste water, or cooling lubricants
  • Foam-inhibiting and foam-reducing agents (anti-foaming agents/defoamers)
  • Foams for washing and cleaning
  • Foams in food and personal care products
  • Surfactant development

ACCESSORIES

  • Accessories for the sample holders’ predecessor models SH4501 and SH4502
  • Filters and stirrers for foaming
  • Measuring columns (room temperature operation)
  • Sample holders
  • Temperature-controllable columns and temperature sensor
  • Tools, aids, and spare parts
  • Upgrades and extensions

INSTRUMENT DIMENSIONS

Footprint 245 mm × 275 mm (W × D)
Height 460 mm
Weight (without accessories) 9 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
optional: 20 mL with 20 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 4 to 90 °C
(additional thermostat needed: TB14)
Resolution –

INTERFACES

PC 1× USB 2.0

ACCESSORIES

Glass columns 20 and 40 mm diameter, temperature control option
Filter plates for sparging diameter: 14 and 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 –

SAMPLE STAGE

Travel distance –

DRIVE

DATA OUTPUT

CAMERA SYSTEM

Diameter of minimum detectable bubble –
Mean field of view size –
Focus –

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 –
Performance –

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)

SOFTWARE

Software type ADVANCE
Available software modules foam analysis

BUBBLE PRESSURE

Precision (surface tension) –

MEASUREMENT SPECIFICATIONS

Measurement type –
Analyzed foam characteristic foamability and foam stability
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

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