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New Developments 1/1/17

A new generation of bubble pressure tensiometers, including BPA-2P and BPA-2S , as follow up developments of the excellent predecessors BPA-1P and BPA-1S , are available more...


New Books 1/1/17

Textbook “Dispersionseigenschaften - Stabilität, 2D-Rheologie, 3D-Rheologie“ This textbook contains the main fundamental knowledge on interfaces, colloidal systems more...


Latest events 1/1/17

2D-3D Rheology and Stability of Disperse Systems - User Workshop, May 8-10, 2017, Berlin-Schönefeld, Germany In May 2017 the 2D-3D Rheology and Stability of Disperse more...

Maximum Bubble Pressure Tensiometer BPA2P



New generation of bubble pressure analyzing tensiometers

BPA 2P bpa2p-start bpa2p-meas


New developments based on modern hardware and software design expands the instrument’s usability and measurement performances.
New improved compact mechanics increases significantly the reliability and stability of the instrument. 
The touch display, ethernet connection ....

Features
- new modern design with accurate high resolution color touch display
- direct and precise measurement of dead time and life time
- surface tension as function of physical time and life time
- available time interval of 3 orders of magnitude (0.010 s to 10 s)
- optionally extended time interval by using a special capillary (0.06 to 30 s)
- precise measurement of correct dynamic surface tensions
- direct determination of the hydrostatic pressure via automatic capillary immersion
- correction of hydrodynamic and viscosity effects of a measurement liquid
- continuously temperature monitoring of the sample
- hardware external bus for instrument integration into lab measurement systems
- supports remote control via Ethernet network
- can be used as stand-alone device with built-in battery
- built-in RTC (real time clock)
- display brightness control
- instrument can be directly integrated into local network environment with internet   access and automatic software update

Instrumental parts
The BPA-2P uses modern high quality electronic and
mechanic components. This results in a better measurement
accuracy and measurement stability. User interface provided
touch screen  functionalities  and optional possibilities to use
external mouse/keyboard connected with the instrument via
USB port.
There is built-in RTC.

The instrument allows the following measurements
- surface tension of liquids
- density estimation

Main features of the software
BPA-2P based on a built-in modern OS Embedded Linux and operates as stand-alone instrument. It contains built-in FTP and VNC servers for sharing the measurement data and remote control over Ethernet network. You could easily get access to BPA-2P via any external PC/Notebook. Internal . All instrument’s functions are supported without external PC connections. As user interface a touch screen provides functionalities and optional possibilities to use external mouse/keyboard connected with the instrument via USB port. USB 2.0 interface and built-in SD-slot allows storing the measurement data on a USB stick or SD card. An Ethernet interface allows connection of the instrument directly to a local network. The instrument control from a PC via local net or internet is possible.




Technical Specifications

Range of surface and interfacial tension 10 to 100 mN/m
Reproducibility of measured values ± 0.1 mN/m
Accuracy of surface tension measurement 0.25 mN/m
Dynamic time range: Standard capillary 10 ms to 30 s
Display Graphic color TFT touch display 5’’
resolution 800 x 480 pixel
Minimum volume test liquid 1 ml
Temperature operating range 10 – 50°C
Measurement temperature range 0 – 100°C
Experimental time:
Standard mode (M1) / Fast Mode (M4)       
20-30 min / 4-6 min
Firmware free update over 1 year after purchase, update via Internet
Number of measurement point in one measurement:
All scan modes (M1, M3, M4 )                       
Constant mode (M2)          


up to 180
not limited
Operation mode Stand-alone (touch display, mouse, keyboard) or remoute via client software
Data storing:
Memory on board
USB memory stick         

1 GB + 128 MB
up to max. 32 GB
Connectivity 100 Mbit Ethernet
2 x USB 2.0
WiFi (optional)
Process control option              Custom 
Connection to PC                         Software Ethernet, USB
Dimensions Measurement unit   205x75x110
Weight Measurement unit / Tripod         2 kg
Power requerment:       Measurement unit 12 VDC
Power supply, external                          100 … 240 AC;  to 12 VDC
Max. power consumption                    10 W
Extra accessories                        capillaries of different diameters
thermostatic jacket