Tensiometer BPA2P - SINTERFACE

Competence in Science and Instrumentation

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The BPA2P is a mobile bubble pressure analyzer with a built in computer and storage so that this instrument can even be used off-line in field studies. It determined the hydrostatic component of the measured total pressure automatically so that surface tensions can be easily obtained. The available time range is between 10 ms and about 10 s, with an excellent accuracy and reproducibility.

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 etc.

- 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 150   mN/m
0.01 mN/m
Accuracy of surface tension measurement
better than 0.5 %
Sampling Rate
250 us
Dynamic time range:
Standard capillary 10 ms to 30000 ms
Graphic color TFT touch display 7’’
resolution 800 x 480 pixel
Minimum volume test liquid
1 ml
Measurement temperature range
0 – 100°C
Experimental time:
Standard mode (M1) / Fast Mode (M4)       
20-30 min / 4-6 min
Measurement mode
-       Standard
-       Constant time
-       Fast scan
-       Increasing flow
Density estimation
Number of measurement point in one measurement:
All scan modes (M1, M3, M4 )                       
Constant mode (M2)          
up to 180
not limited
Operation Modes
Stand-alone (touch display, mouse, keyboard) or remoute via client software
Data storing:
on board FLASH 1 GB
USB memory stick, max. 32 GB
Ethernet 100 Mb
2 x USB
WiFi (option)
Process control option             
free update over 1 year after purchase, update via Internet
Environment Temperature
10 – 50°C
Size of device (L xW x H)
1 kg
Power requerment:      
Measurement unit 12 VDC
Power supply
external 100 … 240 AC;  to 12 VDC
Max. power consumption                   
less than 15 W
Extra accessories
capillaries of different diameters
thermostatic jacket
SINTERFACE Technologies e.K
Müggelseedamm 70
12587 Berlin

+49 (0)30 23544406
+49 (0)30 23535716

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