1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of the Radwag AS 82/220.X2 Plus Analytical Balance. Please read this manual thoroughly before using the device to ensure accurate measurements and safe operation.
The Radwag AS 82/220.X2 Plus Analytical Balance is designed for high-precision weighing in laboratory environments, featuring a dual-range capacity of 82g/220g with readability of 0.01mg/0.1mg. It incorporates advanced features such as a 5-inch graphic color touch screen, multiple weighing modes, and various connectivity options.
Figure 1: Front view of the Radwag AS 82/220.X2 Plus Analytical Balance, showing the weighing chamber, pan, and touchscreen display.
2. Setup and Installation
2.1 Unpacking
Carefully remove the balance from its packaging. Inspect all components for any signs of damage. Retain the original packaging for future transport or storage.
2.2 Placement
Place the balance on a stable, level surface free from vibrations, drafts, and direct sunlight. Avoid locations near heat sources, air conditioning vents, or heavy machinery. Ensure sufficient space around the balance for operation and maintenance.
2.3 Assembly of Weighing Chamber
The AS X2 PLUS analytical balance features an ergonomic mechanical design with a spacious weighing chamber. The dual-CLICK system allows for tool-free assembly and disassembly of the weighing chamber components, including the rimless panes and aluminum base, ensuring stability and reliability.
Figure 2: Close-up view of the weighing chamber, highlighting its spacious design and easy access for laboratory glassware.
2.4 Leveling
The balance is equipped with a leveling device located at the front of the weighing chamber. Adjust the two supporting points (feet) until the bubble in the spirit level is centered. This ensures accurate measurements.
Figure 3: Illustration of the balance's leveling system, showing the spirit level and adjustable feet.
2.5 Power Connection
Connect the provided power adapter to the balance's DC input port and then to a suitable power outlet (100-240V AC, 50/60Hz). The balance requires 12V DC, 0.8A power supply, with a maximum power consumption of 4W.
2.6 Communication Interfaces
The balance offers various communication interfaces for data transfer and connectivity:
- RS232: For serial communication with external devices.
- 2x USB-A: For connecting USB peripherals.
- USB-B: For connecting to a computer.
- Wi-Fi: For wireless network connectivity.
- Ethernet: For wired network connectivity.
Figure 4: Rear view of the balance, showing the DC power input, RS232, USB-A, USB-B, and Ethernet ports.
Figure 5: Diagram illustrating the various communication interfaces available on the balance.
3. Operating Instructions
3.1 Powering On/Off
Press the power button on the front panel to turn the balance on or off. Allow the balance to warm up for at least 30 minutes for optimal stability and accuracy after powering on.
3.2 Touch Screen Operation
The 5-inch graphic color touch screen provides intuitive control. It is designed for comfortable operation, even when wearing laboratory gloves. Users can customize widgets to suit specific needs.
Figure 6: The balance's touch screen display, showing customizable widgets and user interface.
3.3 Basic Weighing Procedure
- Ensure the balance is level and stable.
- Power on the balance and allow it to stabilize.
- Place an empty weighing vessel (e.g., beaker, petri dish) on the weighing pan.
- Press the "Tare" button to zero the display.
- Carefully add the substance to be weighed into the vessel.
- Wait for the reading to stabilize. The stable weight will be displayed.
- Record the measurement.
Figure 7: A sample being carefully placed into a weighing vessel on the balance pan.
3.4 Weighing Modes and Functions
The balance supports various weighing modes and functions, including:
- Formulation: For preparing mixtures with multiple components (up to 18 functions).
- Percent Weighing: For determining the percentage of a sample relative to a reference weight.
- Parts Counting: For counting a large number of identical items.
- Animal Weighing: For stabilizing readings with moving subjects.
- Density Determination: For calculating the density of solids or liquids.
- Checkweighing: For verifying if a sample's weight falls within a specified range.
- Autotest: Self-diagnostic function.
- Dosing: Controlled dispensing.
- Newton unit measurement: For force measurement.
- Under-pan weighing: For weighing objects that cannot be placed on the pan.
- Ambient conditions monitoring: Integrated sensors for environmental data.
- GLP Procedures: Good Laboratory Practice compliance.
- Statistical Quality Control (SQC): For process control.
- ALIBI Memory: Ensures data safety by recording up to 100,000 weighings.
Access these functions via the touch screen interface. Refer to the on-screen menus for detailed instructions on each mode.
3.5 Touch-Free Operation (IR Sensors)
The balance features two programmable IR sensors for touch-free operation, allowing users to execute common functions (e.g., tare, print) without physical contact, enhancing hygiene and workflow efficiency.
4. Maintenance
4.1 Cleaning
Regularly clean the balance to maintain accuracy and prolong its lifespan. Use a soft, damp cloth with a mild, non-abrasive cleaning agent. Do not use harsh chemicals or immerse the balance in water. The weighing pan and other removable components can be cleaned separately.
The weighing pan and centering ring are made of stainless steel, and the balance housing is plastic, with glass draft shield components. These materials are resistant to common laboratory cleaning agents.
4.2 Calibration
The balance features internal automatic adjustment (calibration). For optimal accuracy, perform regular calibration checks using certified external weights. Refer to the balance's on-screen menu for calibration procedures.
4.3 Storage
When not in use for extended periods, store the balance in a clean, dry environment, preferably in its original packaging. Ensure the balance is powered off and disconnected from the power supply.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Balance does not power on. | No power supply; faulty power adapter; power button issue. | Check power cable connection. Ensure power outlet is functional. Try a different power adapter if available. Contact support if issue persists. |
| Unstable readings. | Balance not level; vibrations; drafts; temperature fluctuations; electromagnetic interference. | Re-level the balance. Move to a more stable location. Close draft shield doors. Ensure stable ambient conditions. Remove nearby electronic devices. |
| Inaccurate measurements. | Balance not calibrated; dirty weighing pan; incorrect weighing procedure. | Perform internal or external calibration. Clean the weighing pan and chamber. Review basic weighing procedure. |
| Touch screen unresponsive. | Software glitch; screen damage. | Restart the balance. If unresponsive, contact technical support. |
6. Specifications
The following table details the technical specifications of the Radwag AS 82/220.X2 Plus Analytical Balance:
| Metrological Parameters | |
|---|---|
| Maximum capacity [Max] | 82 g / 220 g |
| Minimum load | 1 mg |
| Readability [d] | 0.01 mg / 0.1 mg |
| Verification unit [e] | 1 mg |
| Tare range | -220 g |
| Standard repeatability [5% Max] | 0.01 mg |
| Standard repeatability [Max] | 0.06 mg |
| Standard minimum weight (USP) | 20 mg |
| Standard minimum weight (U=1%, k=2) | 2 mg |
| Permissible repeatability [5% Max] | 0.02 mg |
| Permissible repeatability [Max] | 0.1 mg |
| Linearity | ±0.05 / ±0.2 mg |
| Stabilization time | 2 s |
| Adjustment | Internal (automatic) |
| OIML Class | I |
| Physical Parameters | |
| Leveling system | Semi-automatic - LevelSENSING |
| Display | 5" graphic color touchscreen |
| Protection class | IP 43 |
| Delivery components | Balance, weighing pan, weighing pan shield, centering ring, bottom cover, power supply, fabric dust cover. |
| Weighing chamber dimensions | 150×150×240 mm |
| Weighing pan dimensions | Ø90 + Ø85 (option) mm |
| Packaging dimensions | 545×455×575 mm |
| Net weight | 7 kg |
| Gross weight | 11 kg |
| Features of Use | |
| Database capacity | 7 databases (up to 10 operators, 1000 products, 5000 weighings, 100 tares, 100,000 ALIBI memory weighings) |
| Touch-free operation | 2 IR Sensors |
| Communication Interface | |
| Communication interface | RS232, 2×USB-A (interchangeable), USB-B, Wi-Fi, Ethernet |
| Electrical Parameters | |
| Power supply | Adapter: 100 - 240V AC 50/60Hz 0.6A, 12V DC 1.2A |
| Power consumption max. | 4 W |
| Environmental Conditions | |
| Operating temperature | +10 ÷ +40 °C |
| Ambient conditions monitoring | THBR 2.0 System, THBR BOX, THB P, THB W, THB S |
| Relative humidity | 40% ÷ 80% |
Note: Repeatability is expressed as a standard deviation from 10 weighing cycles. Stabilization time depends on the ambient conditions and the dynamics of weighing pan loading. Specifications for FAST profile, barcode scanners, available as weighing instrument accessory, communicate with the instrument via RS232 interface exclusively.
Wi-Fi is a registered trademark of Wi-Fi Alliance.
Figure 8: Page 1 of the technical datasheet, detailing metrological parameters and functions.
Figure 9: Page 2 of the technical datasheet, detailing physical, communication, electrical, and environmental parameters.
7. Warranty Information
For detailed warranty information, please refer to the warranty card included with your product or visit the official Radwag website. Warranty terms and conditions may vary by region and product model.
8. Support and Contact
If you require technical assistance, service, or have questions regarding your Radwag AS 82/220.X2 Plus Analytical Balance, please contact Radwag customer support or visit their official website for resources and contact details.
Official Radwag Website: https://radwag.com/en/,w1,0W3
