ZGD60 Fully Automatic Dropping Point And Softening Point Tester (Cup-and-Ball Method)

ZGD60 Fully Automatic Dropping Point and Softening Point Tester, not only provide users with accurate, stable and reliable test results, but also bring users efficient and convenient test experience. High-definition video can be easy to clearly see the whole process of sample state changes, meet the standard cup and measurement methods to ensure comparable results.

Use Areas:

To determine the dropping point and softening point of non-crystalline polymer compounds, determine the physical and chemical characteristics such as concentration density, polymerization degree, and heat resistance, which are used for the component detection or quality control of coal tar, asphalt, rosin, vaseline, lubricating oil, synthetic resin and various ointments, and can replace the traditional Ubbelohde Method dropping point measurement and ring-and-ball softening point measurement. Photoelectric detection, temperature program control, digital display reading, high accuracy, stable performance, using GB8728-88 standard, in line with the Chinese Pharmacopoeia 2020 edition, ASTM D3954, DIN and ISO related standards.

The Fully Automatic Dropping Point and Softening Point Tester perfectly combines high-precision temperature control technology and high-definition video camera technology, which not only provides users with accurate, stable and reliable test results, but also brings users an efficient and convenient test experience. High-definition video can easily and clearly see the whole process of sample melting, automatically detect real-time graph display, convenient for users to accurately measure the melting point and melting distance of the sample.

Audit Tracking: full audit tracking and user classification authority management, super administrator can modify all password and user name and traceability, super administrator can modify all operator rights, user account has disabled and enable two functions, account can be locked when personnel is replaced temporarily and be unlocked when in use, U disk export PDF and Excel formats, have data tamper-proof function.

More complete audit tracking, login, exit, modifying data and time, operation steps, exporting into U disk should have relevant records.

User Management: hierarchical management, super administrator allocation rights, the administrator can establish multiple users, each user can use their own user name, input user name and password when login, user account has two functions: disabling and enabling.

The maximum permission can modify another person's user name and password and track it.

Data Retrieval Function: it is convenient for users to quickly find the desired data in a large number of databases.

Graph Function: the graph can be displayed in real time to facilitate analysis, and the graph and video images can be played back.

Memory: extensible

Main Technical Parameters:

Operation Steps and Use Methods of Dropping Point / Softening Point

1. Introduction of the heating furnace body structure

Shanghai Zhuoguang automatic drop point softening point instrument, the structure diagram of heating furnace body is as shown in Fig. 13:

graph 13

（1） Heating furnace structure: the heating furnace includes the heating body, embedded heating sheet and platinum resistance sensor; the middle empty slot is the sample chamber, for putting into the sample combination: including fat cup clamping head, fat cup with the sample, the lower slit of the fat cup.

 There is a light source under the heating body, the light through the slit of the slit hole, shining on the signal sensor. When the sample softens, drops and blocks the optical hole, the signal sensor sends the signal and the instrument records the temperature.

（2） Sample combination: the middle is the fat cup for placing the sample; the top is the clamp for holding the upper end of the fat cup and connecting the handle; the bottom is the slit sleeve for passing the light and catching the dripping sample when it reaches the dropping or softening point.

（3） Inspection of the composite slit sleeve: click the "Test" button on the main interface, set the preset temperature to no more than 40 degrees, and click the "Automatic Detection" button to enter the automatic test interface.

The sample combination of the empty fat cup is put vertically into the furnace sample chamber, so that the lower observation mouth of the slit sleeve is parallel in front, and the light transmission hole of the furnace body and the light transmission hole of the slit sleeve are parallel to ensure that the detection hole can penetrate light.

2. Methods of Sample Preparation

2.1 Preparation of dropping point samples using a 2.8mm drop hole diameter fat cup:

Dropping point determination samples are mostly paste like substances, and the samples are generally not pre treated. The following two methods can be used to fill the fat cup:

Method 1: When measuring the grease according to ASTMD566-64 (73), the accessory sample rod rotates along the upper and lower ports of the grease to remove the middle cone grease. Figure 14 below:

graph 14

Method 2: According to pharmacopoeia standards such as DIN51801-1 (72), the fat cup should be filled completely and leveled, and the top and bottom should be scraped flat with a scraper.

2.2 Preparation of softening point samples using a 6.35mm drop hole diameter fat cup:

Softening point determination is mostly for solid block shaped samples, which need to be crushed and then heated and melted in a container, and do not use naked flames. Simultaneously stir continuously during the heating process to remove moisture from the sample at a higher temperature until there is no longer any bubbling phenomenon in the sample.

Preheat the fat cup on the copper plate, then pour in the melted sample until it overflows. After the sample cools and solidifies, use an overheated scraper to flatten the surface. Do not create gaps or bubbles inside the fat cup.

When measured according to ASTM D3461-86 or (GB8728-88) standards, a heavy ball (3/8 steel ball) should be placed in the center of the fat cup filled with the sample. Or measure according to other relevant standards.

3. Operation Method

Step 1: Turn on the power switch and preheat the instrument for 10 minutes.

Step 2: Enter the main interface and select 'Test'. For example, if the softening point of the sample to be tested         

is around 65 ℃, input the sample name: Sample 01, starting temperature of 55 ℃, heating rate of 1 ℃/min, and stopping temperature of 75 ℃.

Step 3: After the temperature stabilizes at 65 ℃ (there will be at least 4 beeps from the buzzer), place the test assembly that has been loaded with the sample. Make the gap at the lower part of the slit sleeve clamp onto the positioning bracket inside the furnace. (Note: The slit sleeve and furnace body transparent hole can ensure light transmission. Refer to page 15 (3) for inspection of the combined slit sleeve.)

Step 4: After laying out the sample and waiting for the temperature to stabilize at 60 ℃, (Note: After placing the sample, the furnace temperature may slightly decrease, so it is recommended that the buzzer prompt at least 4 times to raise the temperature.), press the "raise" button, when the tested sample reaches the dropping point or softening point, the corresponding temperature will be displayed on the screen after the "dropping/softening point".

Step 5: After displaying the dropping point softening point temperature, immediately remove the sample. Observe if there is any sample dripping. If there is no sample dripping that covers the slit sleeve through the light hole, it indicates that the test is invalid.

If there is a sample droplet blocking the slit sleeve through the light hole, and the test value is valid, you can press the [Save] button to save the data or press the [Print] button to print the data. If you want to change the tested sample, press the [Return] button to return to the testing interface and set the corresponding parameters.