Slotted weights, also known as slotted masses, are precise and reliable tools used in weighing and calibration applications across various industries. They play a crucial role in ensuring accurate measurements, traceability, and compliance with quality standards.
## Why Slotted Weights Matter
Precision and Accuracy: Slotted weights are meticulously crafted to meet exacting specifications, ensuring precise and reliable measurements. Their accurate weights and dimensions make them ideal for calibrating balances, scales, and other weighing instruments.
**Traceability and Certification: Many slotted weights come with traceable certificates of calibration, providing confidence in their accuracy and ensuring compliance with industry regulations. Traceability ensures that the weights can be linked to national or international measurement standards.
**Durability and Longevity: Slotted weights are typically made of high-quality materials such as stainless steel or brass, making them durable and resistant to wear and tear. Their robust construction ensures longevity, reducing the need for frequent replacements.
Slotted weights consist of a solid metal body with a series of slots or notches cut into its surface. These slots allow users to easily adjust the weight by inserting a hook or rod into the desired slot. The weight is then suspended from a balance or scale to determine the total mass.
Pros | Cons |
---|---|
High precision and accuracy | Can be more expensive than other weight types |
Easy adjustment and flexibility | May require a hook or rod for suspension |
Traceability and compliance | Not suitable for very small or large weights |
Durable and long-lasting | Can be susceptible to rust if not properly cared for |
Slotted weights are available in various shapes, sizes, and materials to meet specific application requirements.
**Stainless Steel Slotted Weights: These weights are corrosion-resistant, durable, and relatively affordable. They are commonly used in laboratory and industrial settings.
**Brass Slotted Weights: Brass weights are denser than stainless steel, making them suitable for more precise measurements. They are typically used in analytical and high-precision weighing applications.
**OIML Slotted Weights: Weights manufactured according to the International Organization of Legal Metrology (OIML) specifications are known as OIML Slotted Weights. They meet strict accuracy and traceability standards and are widely used in legal and trade applications.
Class | Accuracy |
---|---|
E1 | ±0.5 mg |
E2 | ±1 mg |
F1 | ±2 mg |
F2 | ±5 mg |
M1 | ±10 mg |
M2 | ±20 mg |
Shape | Description |
---|---|
Rectangular | Rectangular block with slots |
Cylindrical | Cylinder with slots |
Spherical | Sphere with slots |
Toroidal | Donut-shaped with slots |
Material | Properties |
---|---|
Stainless Steel | Corrosion-resistant, durable, affordable |
Brass | Dense, suitable for precise measurements |
Aluminum | Lightweight, corrosion-resistant |
Tungsten Carbide | Extremely dense, wear-resistant |
Slotted weights allow for easy adjustment of weights, while solid weights have a fixed weight.
Regularly clean the weights with a soft cloth and avoid exposing them to extreme temperatures or moisture.
The accuracy of slotted weights varies depending on their class and manufacturer. Most slotted weights have an accuracy of ±0.5 mg to ±20 mg.
Many slotted weights come with traceable certificates of calibration, providing confidence in their accuracy.
Yes, slotted weights can be used to calibrate digital scales, but it is important to ensure the weights are compatible with the scale's capacity and accuracy requirements.
Slotted weights can be purchased from authorized dealers or online retailers specializing in laboratory equipment and precision instruments.
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