The Resodyn LabRAM I is a ResonantAcoustic® Mixer (RAM) designed for laboratory and development environments, capable of processing up to 1.1 lb (500 g) of materials per batch. It utilizes intense vertical motion to generate acoustic effects within the mixing vessel, facilitating efficient mixing. The system is equipped with proprietary mixing control circuitry and an acoustically insulated, compact enclosure, allowing for powerful yet quiet operation.
Function Description:
The LabRAM I's primary function is to mix materials using ResonantAcoustic® Mixing (RAM) technology. This involves moving the mixing vessel up and down at 60 times per second, achieving accelerations of up to 100 g. The system continuously senses and adjusts its operating frequency to maintain resonance, ensuring efficient energy transfer to the materials. This "sound mixing" approach is effective for various materials and can be influenced by factors such as pressure inside the vessel (ranging from vacuum to pressurized), temperature of the vessel contents, vessel design, processed material fill height, and the order of material addition. The LabRAM I operates in two primary modes: Recipe Mode for routine operations and Auto Mode for characterizing mixing processes and programming recipes.
Important Technical Specifications:
- Maximum Payload Capacity: 1.1 lb (500 gram)
- Sound Emitted: <70 dB at 3' at 100 g with an empty vessel
- Vessel Temperature Monitoring: 1 RTD monitored and recorded (optional)
- Automatic/Programmable Vacuum: Yes (optional)
- Data Logging: Yes
- Computerized Operator Interface (HMI): Yes
- Weight: 180 lb (82 kg) plus vessel holder fixture
- Dimensions: 18" wide x 26" deep x 25" high
- Electrical @ 50/60 Hz, CE Certified: 100-120 / 200-240 VAC
- Power Consumption: 80 to 1200 Watts
- Operating Environment: Non-hazardous, IP20 enclosure, 0°C – 40°C (32°F – 104°F) ambient temperature.
Usage Features:
- Adjustable Vessel Holder: Accommodates mixing vessels between 3.25" and 4.6" high (82.55 mm and 116.84 mm) with a standard 4" (101.6 mm) diameter. The vessel holder includes a Hold-Down Knob, Jam Nut, Nylon Washer, Cross Bar, Upper Base, Bolts & Standoffs, Lower Base, and a Bottom Rubber Dot for secure vessel placement.
- Safety Interlocked Lift-Assisted Lid: Features a viewing window for monitoring the mixing process. The lid must be securely closed for operation.
- Touch Screen Human Machine Interface (HMI): A digitally-controlled user interface for all data entry and operations, accessible via software keypads and buttons. The HMI displays controls, indicators (acceleration, power, temperature, vacuum), recipe status, and navigation options.
- Login Levels and Privileges: The system incorporates a user authentication system with different login levels (operator, technician, calibration, supervisor) to protect against unauthorized use and maintain an audit trail.
- Recipe Mode: The primary operating mode for operators, allowing selection and execution of pre-programmed mixing recipes. Recipes can be created, edited, renamed, and deleted, with the capacity to store 10 recipe groups, each containing up to 10 recipes (total of 100 recipes).
- Auto Mode: Used by higher-level users to characterize mixing processes and program recipes. In this mode, users can set acceleration, temperature, and vacuum setpoints, and define mixing durations.
- Processing Accessories (Optional):
- Manual Vacuum System: Allows manual control of pressure inside the mixing vessel.
- Automatic Vacuum System: Enables manual or automatic control of pressure inside the mixing vessel as a parameter of a processing recipe.
- RTD Temperature Monitoring: Monitors mixing ingredient temperature via an RTD sensor installed in a vacuum system lid.
- Viewer Screen: Provides real-time time-history plots of measured parameters such as acceleration, power, frequency, temperature, and vacuum, with independent zooming capabilities for Y-axes and a shared X-axis zoom.
- Alarms System: Monitors parameters to prevent injury or damage, triggering red (shutdown) or yellow (warning) alarms on the HMI Status Bar. The Alarms Screen provides a tabular format of alarm details, including activation time, message, recovery time, and acknowledgment time.
Maintenance Features:
- Preventive Maintenance: Regular cleaning of the upper resonator and bellows is crucial to prevent premature wear and damage from material debris. A soft, non-abrasive cloth and water, or a small hand vacuum, are recommended for cleaning.
- Cleaning Procedures: The molded plastic acoustic enclosure should be cleaned with a soft, non-abrasive cloth and water with neutral washing agents (pH 5-8). Isopropyl alcohol (IPA) or white spirits (free of aromatic compounds) can be used for greasy or oily substances. Rinsing with damp, cold water after cleaning is recommended. Solvents, strong acids, alkaline detergents, or abrasives should be avoided.
- Accelerometer Calibration: Recommended annually or as per user-specified preventive maintenance schedules, or when the accelerometer is replaced. A calibration kit is available for purchase or rent from Resodyn Acoustic Mixers.
- Serviceable Parts: The LabRAM I is designed with few serviceable replaceable parts. Factory-replacement parts are recommended to ensure safety and prevent equipment damage.
- Fuse Replacement: Instructions are provided for replacing fuses located on the back panel.
- Bellows Replacement: The inner and outer bellows are designed for operational life greater than 2000 hours with proper maintenance. Instructions are provided with replacement parts if needed.
- Accelerometer Replacement: The accelerometer is designed for an operational life greater than 2,000 hours. Replacement instructions are provided with the part, and calibration is required after replacement.
- Technical Support: Resodyn Acoustic Mixers provides technical support for troubleshooting, mounting, and other inquiries.
- Data Tab: Allows management of log files (Data Logs, Alarm Logs, Mix Logs, Login Logs) stored on the LabRAM I. Files can be deleted to manage memory usage, and warning alarms are triggered if directories exceed 100MB, with automatic deletion if they exceed 200MB. Log files can be synchronized with a computer using RAMTools and RAMViewer applications.
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