astm d971 surface tension meter du nouy ring digital oil interface tension tester surface tensiometer
I. Summary As per the standard requirement of GB6541-86 "Measurement of interfacial tension between petroleum product oil and water"(Ring method), this automatic interfacial tension meter is suitable for measuring the surface tension of variety of liquids (liquid-gas phase interface) and interfacial tension between mineral oil and water (liquid-liquid phase interface). Large screen dot matrix LCD display and unmarked keys under Chinese menu are adopted for this instrument, which realizes high automaticity and reliability, good repeatability and simple operation. All the test can be done only operate according to the menu prompt.
II. Technical parameters Display method:Large screen dot matrix LCD display with backlit, Chinese menu prompt, which involves all the test and calculation of GB6541. Key:Unmarked key under Chinese menu prompt Measurement range: 2~100 Mili N/M Sensitivity:0.1 Mili N/M Accuracy:0.1 Mili N/M Resolution:0.1Mili N/M Repeatability:0.3% Operating temperature:10~30ºC(Typical value:25ºC) Operating humidity:(20~75)%RH Power supply:AC 220V±5% 50Hz Power:20VA Profile size:185×260×360(mm) Weight:15 Kg
III. Main featuers
Adopt the original fast response electromagnetic force balance sensor to improve the measurement accuracy and linearity
The instrument calibration only needs to be calibrated at one point, which solves the problem of multi-point calibration for the previous generation sensors. Eliminates the zero adjustment potentiometer and the full-scale potentiometer.
Real-time display of equivalent tension value and current weight (can be used as electronic balance to weigh)
Integrated temperature detection circuit, automatic temperature compensation for test results
240×128 dot matrix LCD display, no logo buttons, with screen protection function
Time-stamped history records, up to store 255 groups data .
Built-in high-speed thermal micro printer, nice and fast printing, with offline printing function
Equipped with a standard RC232 interface, which can be connected to a computer for easy processing of test data (optional).