BZY-3Manual surface tension meterProduct Introduction:

The main technical indicators of the surface/interface tension meter still meet the standards of the fully automatic basic type. Except for the change of the instrument's testing platform from automatic lifting to manual lifting (including fast and fine adjustment modes), the testing process is still automatic testing, calculation, and display. On the premise of ensuring technical indicators, it is an economical and practical product.

Manual surface tension meterMain features:

Compared to other surface tension meters, the BZY series manual lifting surface tension meter includes but is not limited to the following advantages:
*The sensor has sensitive response, high accuracy, and LCD display;
*Automatically read the surface tension balance value;
*Manual lifting has two gears: fast and fine adjustment, with simple and reliable operation;
*One click reset;
*One click calibration, combined with randomly attached standard weights, accurate and fast;
*The error caused by the instrument itself is small, which enables more effective control of various errors during the measurement process;
*Using the platinum plate method or platinum ring method, connected to a computer, and equipped with real-time curve software:
* It can clearly display the tension rise or fall curve over time due to the presence of surfactants.
* It can display the curve and time of tension values from low to high at the interface of two different densities of liquids, such as oil/water interface tension values.
*Optional sample constant temperature cup, external constant temperature bath can control the temperature of the tested liquid.
*Easy to operate.

Manual surface tension meterTechnical parameters:

Surface/Interface Manual Surface Tensioner Surface/Interface Manual Surface Tensioner

Platinum method:

1. Platinum plate method (also known as hanging plate method)
This was first proposed by Wilhelmy in 1863, and is often referred to as the Wilhelmy method. The principle of this method is to measure the tensile force generated by capillary rise when a platinum plate with bristles is parallel to the liquid surface at the bottom and just touches the liquid surface, reaching the value at complete equilibrium.

2. Instrument principle
The measurement principle of this instrument is to insert a platinum plate into a liquid, and the balance value is sensed by a high-precision sensor. This balance value is converted into a surface tension value and displayed through circuit software and hardware. It can also be connected to a computer through an RS232 interface to collect corresponding data.

Advantages of Platinum Plate Method
The platinum plate method has many advantages, such as simple operation, no need for density data, and no need for any calibration calculations, which can obtain completely balanced surface tension value data.

4 Platinum Plate Measurement Operation Method

Before testing, the instrument should be powered on and preheated for at least 30 minutes;

4.2 Clean the platinum plate with running tap water. The water flow should not deform the platinum plate (distilled water should be used). Use tweezers to hold the hook of the platinum plate and burn it on an alcohol lamp until it turns slightly red for about 20-30 seconds. Then hang it on the hook and cool it to room temperature for later use. However, the time should not be too long to prevent the platinum plate from absorbing moisture from the air. If there are organic matter or other pollutants that cannot be cleaned with water, solvents such as acetone, alcohol, toluene, etc. can be used for cleaning or heated with 20% hydrochloric acid for cleaning;

4.3 Clean the glassware with running water and dry it (place it in a dust-proof container for later use). During testing, take a small amount of the tested sample to pre wet the inner wall of the glassware and pour it out (note: this is very important). Then pour in the tested liquid and place the glassware in the sample tray

application area

The basic function of a tensiometer is to test the surface tension and liquid-liquid interfacial tension of a liquid. Surfactants are widely used in various industries and have functions such as emulsification, solubilization, decontamination, and defoaming. The main application areas of surfactants are introduced as follows:

Standards

Our factory produces fully automatic and automatic meters/The interface tension meter is applicable to the following standards

1. JB/T9388-2002 "Interface Tension Meter Conditions"
2. GB/T6541-86 "Petroleum products - Determination of interfacial tension between oil and water using a circular ring method"
3. ISO1409-1995 "Surface Preparation of Plastic Rubber Polymer Dispersions and Latex for Determination"
4. GB/T22237-2008 "Surface active agents - Determination of surface tension using a surface tension meter"
5. GB11278-89 "Determination of critical micelle concentration of anionic and nonionic surfactants (ring method)"
6. GB/T18396-2001 "Determination of Surface Tension of Natural Latex by Ring Method"
7. SH/T1156-99 "Determination of Surface Tension of Synthetic Rubber"

Standard for Liquid Tension Testing

Surface tension meter/contact angle with standard configuration:

Product Display(Optional accessories and optional devices)

1. Platinum ring
Made of platinum wire with a radius of 0.185mm, with a circumference of 60mm and a ring radius of 9.55mm.
During testing, connecting to a computer can be done throughzConvert large values to tension values (unit: mN/m）。
Made of platinum wire with a radius of 0.3mm, with a circumference of 60mm and a ring radius of 9.55mm.
During testing, connecting to a computer can be done throughzConvert large values to tension values (unit: mN/m）。

2. BZY-1/21 ordinary constant temperature pool
By connecting a silicone tube to a constant temperature bath, samples with a temperature range of 0-60 ℃ can be used for measurement. It can also be combined with BZY-1/23 temperature measuring device to display the temperature value of the measured liquid.

3. BZY-1/22 high and low temperature constant temperature pool
By connecting a silicone tube to a constant temperature bath, samples with a temperature range of -5~110 ℃ can be used for measurement. And BZY-1/23 temperature measuring device can be optionally used in combination to display temperature values.

4. BZY-1/23 temperature measuring device
The sensor composed of PT100 can be inserted into the sample to detect the temperature of the sample in real time. Display range 0~99 ℃, display accuracy 0.1 ℃.

5. When the surface tension test of the tested liquid needs to be carried out under special temperature conditions (extraordinary temperature) of constant temperature, it can be cyclically matched with our factory's super constant temperature bath or low-temperature constant temperature bath to obtain a high-precision and uniform constant temperature field source.

The following figure shows the combination of a tension meter and a constant temperature bath

Third party calibration certificate for tension tester