AutoRice Digital Manometer/Controller

AutoRice™ Digital Manometer/Controller

The AutoRice™ Digital Manometer/Controller is a cutting-edge device designed to precisely measure and regulate vacuum pressure and time, making it an essential tool for asphalt testing laboratories. It can also be equipped with an optional Shaker Sensor to monitor vibration energy during theoretical maximum specific gravity testing (Rice Test) of hot-mix asphalt samples.

Why Precise Control Matters

Careful control of vacuum pressure, time, and shaker vibration energy can lead to dramatic improvements in inter-laboratory repeatability and accuracy. Variations in acceleration and frequency energy produced by rice shakers can create repeatability issues and even cause stripping of the sample. Until now, actual shaker energy profiles have not been monitored, but with the AutoRice™ Controller, accurate measurements help establish parameters for adjusting settings between different shakers.

How It Works

With the push of a button, the AutoRice™ Controller:

• Starts the vacuum pump
• Regulates vacuum pressure
• Controls vacuum time
• Displays vacuum pressure in real time

The optional Shaker Sensor, purchased separately, attaches to the pycnometer and connects to the controller's USB port to measure vibration acceleration and frequency. Data from the sensor can then be used to calculate a "shaker factor" to establish proper vibration levels.

Easy Setup and Data Management

The Controller features intuitive menu-driven software, making it easy to set up and replacing traditional analog or digital manometers. Sample weights can be entered directly into the system, which then automatically calculates maximum specific gravity results. Test data from each cycle can be downloaded to a PC via the USB port for review, ensuring adherence to test specifications. Documented test data can also be stored, shared, or emailed for streamlined record-keeping.

Versatility and Compatibility

The AutoRice™ Controller and Shaker Sensor are compatible with glass, metal, or plastic pycnometers, and work seamlessly with Rice Shakers. Its compact design allows for convenient benchtop placement or easy wall-mounting. Additionally, the SG-35 automates the saturation process for AASHTO T 283 Moisture-Induced Damage specimens.

Technical Specifications

• Intake Port: 0.375in (10mm) hose barb connection
• Electrical: 120 to 240V / 50 or 60Hz / 10 Amps
• Vacuum pump control: Up to 3/4hp to ±0.4mm at 27.5mmHg
• Controller Dimensions: 12 x 4 x 9in (305 x 102 x 229mm), WxDxH

Standards Compliance

The AutoRice™ Controller meets the following industry standards:

• AASHTO T 209
• AASHTO T 283
• ASTM D2041/2041M

Key Features

• Precise measurement and regulation of vacuum pressure
• Increased accuracy in establishing proper vibration levels
• Optional Shaker Sensor for monitoring vibration energy
• Data can be downloaded via USB to a PC for easy review and storage
• Compatible with glass, metal, or plastic pycnometers
• Compact design for benchtop or wall-mounting
• Automates saturation process for AASHTO T 283 specimens
• Meets AASHTO T 209, AASHTO T 283, and ASTM D2041/2041M standards