Rainhart Vacuum Degassing Oven (VDO)

Rainhart Vacuum Degassing Oven (VDO)

ASTM D6521, AASHTO R28, EN 14769

VDO removes air bubbles created during in-service oxidative ageing of asphalt binder by PAV. Unlike conventional vacuum ovens which measure the temperature of the vacuum, our product measures the temperature at the aluminum support for sample tins, for more accurate degassing. This measurement method differs from conventional vacuum ovens, which typically measure temperature inside the vacuum chamber, and addresses the poor conductor nature of vacuum environments by providing a more stable and accurate reading at the aluminum support. Vacuum degassing ovens are specialized equipment to remove air from asphalt specimens, with automated controls, programmable vacuum and temperature settings and can handle multiple sample containers. The vacuum degassing process is a standard practice for removing entrapped air from asphalt specimens, and rapid removal of these bubbles is essential to meet testing standards. Most vacuum ovens, such as the ATS Vacuum and ATS Vacuum Degassing Oven, are designed to rapidly evacuate air and are equipped with devices that measure both vacuum pressure and temperature for precise process control.

Vacuum Degassing Oven Features:

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• 3 operating modes: Fully Automatic, Semi-Automatic and Manual.

• Temperature is measured by Platinum RTD.

• Over temperature limit switch.

• Automatic release of the pressure at the end of the test.

• Double vessel to insert 4 or 8 samples.

• Fast and vacuum system to reach set point.

• USB port on front unit with software upgrades and data storage.

• Inlcudes (8) Small Tins & (4) Large Tins

The VDO follows standard practice for asphalt binder testing.

Power supply: 230V 1ph 50Hz Dimensions: 17x18x17 inches approx

Overview

The VDO is a state-of-the-art, automated tabletop degassing oven to remove air bubbles from asphalt specimens after aging in a Pressure Aging Vessel (PAV). This unit has a self contained automatic vacuum system for fast and efficient degassing of asphalt samples. With a rugged stainless steel cabinet and user friendly interface, the Vacuum Degassing Oven is the perfect solution for laboratories and industries that require precise and reliable degassing results. The Vacuum Degassing Oven offers multiple language options for global usability. The design allows for easy loading and unloading of samples. The Vacuum Degassing Oven supports easy software upgrades to ensure the latest features and compatibility.

VDO Key Features

• Automated Tabletop Vacuum Degassing Oven: Self-contained vacuum system to remove air bubbles from asphalt specimens.

• Stainless Steel Cabinet: Durable and easy to maintain.

• Menu Driven: Digital controller or touchscreen interface.

• VDO Touch Advanced Touchscreen Controller: Features programmable parameters and compliance with industry standards.

• Controller Display: Provides real-time information on temperature, vacuum pressure, and the current process stage.

• Visual Alarms Alert: Visual alarms alert users to process completion or any required attention.

• Remote Operation: Oven can be operated remotely via network connection using an ethernet cable; USB ports are available for software upgrades and data transfer.

• Vacuum Chamber with Removable Cover Features: Includes removable cover features such as the units cover and a heat resistant glass viewing window located for easy access, monitoring, cleaning, and handling samples.

• Monitored Visually: The degassing process can be monitored visually through the glass viewing window.

• Precise Temperature Measurement: Ensures accurate process control and reliable results.

• Specimen Removal Tool: To load and unload samples easily.

• Sample Containers and Sample Tins Included: Includes sample containers and tins.

• Vacuum Supply Controlled: Digital microprocessor or touchscreen controller.

• Input Vacuum Degassing Oven Pressure Indicated: kPa absolute.

• Degassed Asphalt Temperature Measured: Platinum RTD probe.

Technical Specifications

• Voltage: 115V or 230V

• Frequency: 50

• Temperature Range: Ambient to 200°C (392°F), with precise control of temperatures for optimal degassing

• Vacuum Degassing Oven Pressure: 15 ±1.0kPa (4.4in Hg)

• Vacuum Chamber Dimensions: 20.25 x 14.25 x 11in (514.4 x 362 x 279.4mm

• Suitable for preparing pressure aged binder samples

• Programmable soak time for maintaining samples under set conditions during the vacuum degassing oven process

• Weight: 59lb (26.8kg) or 190lb86.2kg)

• Power Consumption: 600 W

• Dimensions: 24 x 16 x 12in (609.6 x406.4 x 304.8mm)

Applications and Benefits

The Vacuum Degassing Oven is designed to remove air from asphalt specimens after aging in a Pressure Aging Vessel (PAV). This ensures accurate and reliable degassing results which is crucial for further testing such as BBR, DSR, penetration, ductility and softening point. The oven is suitable for laboratories and industries such as asphalt production, construction and research. By simplifying the degassing process and reducing the chance of error, it meets the requirements of AASHTO R28, ASTM D6521 and EN 14769 test standards.

Safety and Design

Stainless steel cabinet and chamber. Removable cover and heat resistant glass viewing window. Specimen removal tool to load and unload samples safely. Digital microprocessor or touchscreen controller to control the process. Input pressure indicated in kPa absolute.

Operation and Maintenance

Easy menu driven operation with digital controller or touchscreen. Program vacuum time, temperature and soak time. Audible and visual alarms at end of process. Removable cover and heat resistant glass viewing window for monitoring and maintenance. Recommended regular maintenance and calibration.