Lab Balance Parts

Weighing Pan:

• Typically made from stainless steel or other non-reactive materials.
• The diameter ranges from 80 mm to 160 mm.
• Depending on the balance model, it can support weights from milligrams up to 200 grams.

Load Cell:

• A transducer that converts force into an electrical signal.
• Capable of measuring forces in the range of 0.1 milligrams to 200 grams with a sensitivity of 0.001 mg.
• Constructed using strain gauges with a resolution of 0.1 μg.

Draft Shield:

• Enclosure made from glass or acrylic with an average thickness of 3 mm.
• Reduces the impact of air currents on measurements.
• Volume capacity is typically around 2 to 5 liters.

Display:

• Digital readout with LCD or LED screen.
• Display resolution typically ranges from 0.1 mg to 0.01 g.
• It may include additional information such as unit of measurement, stability indicator, and tare function.

Leveling Feet:

• Adjustable feet with a diameter of about 25 mm.
• It can be adjusted to a height of 5 to 15 mm.
• Ensures the balance is level to maintain accuracy within ±0.1 mg.

Spirit Level:

• Integrated bubble level with a diameter of approximately 10 mm.
• Helps ensure the balance is perfectly horizontal.

Calibration Weight:

• Typically made from stainless steel or other highly durable and non-reactive materials.
• Weight classes range from 1 mg to 200 grams.
• The precision of these weights is within ±0.1 mg for low weights and up to ±0.01% for higher weights.

Keypad/Buttons:

• Usually made from plastic or rubber.
• Includes 5-10 buttons for functions such as tare, zero, calibration, and unit selection.
• Each button has a lifespan of approximately 1 million presses.

Power Supply:

• Operates on 100-240V AC power.
• Consumes between 5 to 20 watts.
• It may include an internal rechargeable battery with a capacity of around 2000 mAh, providing up to 8 hours of operation.

Connectivity Ports:

• USB, RS232, or Ethernet ports
• Data transfer rates up to 12 Mbps for USB 2.0.
• Allows integration with computers and other data logging systems for real-time data analysis.

Housing:

• Made from durable ABS plastic or metal alloy.
• Dimensions typically range from 200 mm to 300 mm in width, 300 mm to 400 mm in depth, and 70 mm to 120 mm in height.
• Protects internal components from environmental damage and chemical spills.

These parts collectively ensure the precision, accuracy, and reliability of laboratory balances, which are crucial for scientific experiments and measurements.