Computer Condensation Point Meter

I. Overview

EDND-6TypeAutomatic Cloud Point and Pour PointTesters incorporate cutting-edge16Please provide the Chinese content that needs to be translated.MCUThe central processing unit features a large-screen LCD display, offering the advantages of fast testing speed, high accuracy, good repeatability, stability, reliability, ease of operation, and simplicity in maintenance. Its refrigeration system utilizes semiconductor refrigeration, allowing for continuous oil injection testing, with measurement results that can be printed out via a miniature printer.

EDND-6No Chinese content provided. Please provide the text to be translated.Automatic Cloud Point and Pour PointThe test instrument is essential for transformer factories, power supply departments, oil refineries, railways, shipping, oil storage stations, and commercial sectors to monitor and control the pour point and cloud point of petroleum products, facilitating rapid analysis. The measurement results are compliant with standards.GB510－83Procedures are standardized.

Technical Indicators

Ø Applicable Oil Products: For solidifying.../Pint Point at-10℃～-Petroleum products within the 60℃ range can be tested directly.

Ø Accuracy Testing:±1℃

Ø All measurements were conducted.Within the scope of the GB510-83 method.

Ø Instrument display resolution:0.1℃      

Ø Refrigeration Depth LimitTemperature difference ≥ 65℃ (difference between the outlet temperature and the instrument display temperature)

Ø Cooling speed15-minute temperature difference ≥ 60℃

Ø Cooling Water Pressure Requirements  Pressure:4.9×10～49×10⁵Pa

Ø Traffic:1.5 liters/minute

Ø Power Voltage: ～220V±0.5V

Ø High power consumption:≤250W

Ø Oil Testing Consumption: Each time20ml

Ø Application Environment: Temperature25±10℃

Humidity <85%RH

Ø Dimensions:360×280×386（mm³）

Ø Weight:26 kg

III. Working Principle and Structure

The solidification of matter is divided into two types: crystalline solidification and viscoplastic solidification. For petroleum products, once they solidify, they lose their fluidity. Even when pressure is applied, they do not flow, indicating they have solidified. We detect their fluidity through pressure signals, thereby determining if they have solidified. After solidification, the pressure remains constant. At this point, the temperature display section of the control instrument indicates the sample's solidification point.

Instrument Structure

The equipment is divided into two main parts: refrigeration and temperature control.

Cooling section

This instrument utilizes semiconductor refrigeration with a water-cooled system. The heat sink end must be cooled with water. To protect the semiconductor cooling plate, we have added a water pressure switch. The semiconductor cooling plate will only operate normally when the water pressure reaches the switch's closing point. Otherwise, there will be no refrigeration current.

Refrigeration System: Composed of a cooling module and a refrigeration transformer, rectifying diodes, etc., the refrigeration transformer and rectifying tubes begin to operate upon activation of the refrigeration. The cooling core within the cooling module starts to cool down. Upon cessation of refrigeration, the core temperature begins to rise.