Automatic Freezing Point Analyzer

Automatic Freezing Point Analyzer

The freezing point analyzer is designed to accurately determine the freezing point of aviation fuel, engine coolant, antifreeze products, brake fluid, and other petroleum products. Its feature is a built-in cooling system that uses cascade refrigeration and can cool down to -70 ℃. And it can automatically capture the freezing point, with the system controlled automatically without manual intervention, achieving fully automated freezing point experiments.

Main technical features:

• 1.The cold bath is made of stainless steel,double glass observating window,with the advanced temperature control technology,the lowest tempeature degree is -70℃,the temperature accuracy is ±0.5℃,fitting standard GB/T 2430,SH/T 0090 and ASTM D1177,D2386  for the freezing point test requirement.
• 2.Automatically judge the freezing point temperature.
• 3.According to the different configuration,it can be used to test the freezing point etc.indexes of jet fuel,engine coolant and its concentrated solution,it's a multipurpose freezing point tester.
• 4.It's the floor stand structure,the work table-board is made of stainless steel,concise design,nice appearance,convenient usage,fully furnished.              
• The maximal characteristic:Unit as one to measure jet fuel freezing point and engine coolant freezing point;automatically stirring sample and judging the freezing point temperature,fast cooling,high precision temperature control,full spraying plastic case,wear well.

Principle:

Engine coolant is usually a water-based ethylene glycol solution, formulated to protect the engine from thermal damage during normal operation. In extremely cold environments, idle engines may be frozen by coolant, posing two risks to the engine: (1) the coolant may not provide sufficient protection during start-up, and (2) the expansion of the coolant during freezing may damage hoses and other system components. The freezing point of the coolant is determined in this test.

The sample is placed in a cooling tube equipped with a temperature measuring device and a spiral stirring rod. While the sample is thoroughly stirred, the temperature is lowered and regularly recorded. The relationship chart between temperature and time is generated, and the freezing point is determined by the deviation on the curve.

Main technical specifications:

Structure:

1. The automatic freezing point tester consists of a refrigeration system, an industrial control upper computer control system, an embedded hardware control system, an electromechanical stirring system, a cold bath test observation system, a frame structure shell system, etc.

2. The cooling system adopts a cascade refrigeration system, with a minimum temperature of -70 ℃ for the cold bath. The temperature control accuracy reaches ± 1 ℃ through components such as condenser tubes, temperature sensors, bath stirring devices, and heating tubes, meeting the freezing point test requirements specified in the corresponding standards. The cold bath device can conduct parallel experiments on two test tubes simultaneously; Stainless steel cooling bath is embedded with multi-layer internal heating glass windows, with good insulation performance, no dew or frost, and excellent visibility. A test mixing device driven by a specially designed motor for up and down linear motion.

3. It can automatically capture the freezing point, and based on the temperature recovery characteristics of the freezing point, the changes can be visually observed on the curve of the main interface. The cold bath temperature is set to the preset freezing point minus 28 ℃, and the system automatically controls it without manual intervention.

Detail Images: