Chinese JYW-200C automatic table interfacial tension instrument (including computer) measurement range 0~200.0mN/m

JYW-200C

Automatic interfacial tension instrument (including computer)

Measurement range 0~200.0mN/m (platinum ring method), resolution 0.01mN/m, automatic correction factor calculation, and directly display the actual tension value of the liquid surface and interface, accurate test, data, good repeability, widely used in biological agents with surfactants, oilfield surfactants, admixtures, transformer oil quality detection and synthetic blood penetration test for surgical respirators, and teaching.

Introduction

JYW-200C fully automatic surface tensIon Meter is an instrument used to measure the surface tension of liquids. Test methods: platinum ring method, platinum plate method (optional). JYW-200C fully automatic surface tensIon Meter is a simple and easy testing instrument that uses physical methods instead of chemical methods. This instrument can quickly and accurately measure the surface and interfacial tension values ​​of various liquids. It is suitable for Win98/2000/XP operating system. It has a very user-friendly operation interface and can conduct test operations directly on the computer interface. It has the functions of saving, retrieving and printing test reports in Chinese and English. It is used in the water and electricity department to test the interfacial tension value of electrical oil to strengthen the supervision of insulating oil quality. In petroleum, chemical industry, scientific research and other departments, it can test the surface tension value of various liquids to strengthen the analysis of various liquids. It is used for scientific research and teaching in colleges and universities and scientific research institutes.

working principle

The structure of the instrument is mainly composed of a torque wire, a differential transformer, a platinum ring and a lifting platform. When used, the platinum ring is immersed in a certain position in the liquid to be measured, and the glass vessel containing the liquid to be measured is lowered through the lifting platform. At this time The film between the platinum ring and the liquid being measured is stretched, causing the platinum ring to receive a downward force. The torque wire is twisted through the lever arm. The magnetic core of the differential transformer rises as the platinum ring falls, causing the differential The coil of the dynamic transformer induces a certain Voltage value, which converts the deformation of the stretched film into Voltage, which is converted into the corresponding tension value through computer processing and automatically displayed. As the film is gradually stretched, the tension value gradually increases until the film ruptures. Record the maximum value as the actual measured tension value P of the liquid, and then multiply it by the correction factor F of the liquid to get the actual tension value V of the liquid. That is, V=P·F, the correction factor F depends on the measured tension value P, the liquid density, the radius of the platinum wire and the radius of the platinum ring. Since the machine is controlled by a computer, the anti-interference performance of the instrument is increased in terms of software compilation and hardware design.

Features

• Automatic correction factor calculation, and directly display the actual tension value of the liquid surface and interface, automatically calculate multiple times.

• The average value of the actual tension value tested, the test is accurate and the data repeatability is good.

• Equipped with quartz glass, suitable for testing various strong acid and alkali solutions.

• It adopts computer control and operates in automatic mode. It is suitable for Windows interface and has a humanized operation interface. It has parameter settings, real-time display of test curves, peak hold, automatic factor correction, and the actual tension value is obtained. The test ends automatically. shutdown, with temperature calibration function.

• The saving and printing of curves and data, and the retrieval and printing of historical curves can be automatically controlled on the computer interface, with test reports in Chinese and English (a computer and printer can be selected according to the user).

• Equipped with a brand-name computer and USB port communication control, this product has passed metrological certification.

fit standard

1. JB/T9388-2015 "Technical Conditions for Interface Tension Meter";

2. SH/T1156-2014 "Synthetic Latex Surface Tensiometer Determination Method"

3. ISO6295: 1983 "Petroleum products, mineral oils, oil to water interfacial tensiometer - Determination of ring method"

4. ISO1409: 2020 "Determination of plastics, rubber, polymer dispersions and latex Surface Tensiometer"

5. GB/T6541-86 "Petroleum Products Oil-to-Water Interfacial Tensiometer Determination (Ring Method)" is equivalent to the international ISO6295-1983.

6. GB 19083-2003-2011 GB/T 4745-2011 "Technical Requirements for Medical Protective Masks"

7. GB5549-2010 "Determination of surface tension of surfactants by pulling up liquid film method"

8. GB/T 8077-2012 "Test Method for Homogeneity of Concrete Admixtures"

9. JJF1464-2014 "Calibration Specifications for Interface Tension Meter"

Packing list：Lenovo computer, test host, accessory box, certificate of conformity, warranty card, manual.

[Note]Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.