

| Brand | BECKMAN |
|---|---|
| Manufacturer Part Number | 8211-R2K-L.5 |
| Resistance Rating | 2 K |
The Beckman Coulter 8211-R2K-L.5 is a high-precision 2.0 kilohm linear potentiometer designed for laboratory applications. This potentiometer is part of Beckman Coulter's respected line of precision instruments and is ideal for use in voltage dividers, toggle switches, and variable resistance circuits.
The 8211-R2K-L.5 potentiometer is constructed with a linear taper, ensuring consistent resistance values across its length. The resistance element is made of high-purity carbon, which provides exceptional stability and long-term reliability. The potentiometer features a wiper with a spade terminal and a Teflon insulator, enhancing its durability and reducing the potential for electrical failures. Moreover, the wiper has a bio-seal bake-out feature that eliminates moisture to deliver improved performance and longer life.
The 8211-R2K-L.5 is housed in a 35mm (1.38 inches) diameter baked-enamel, epoxy painted porcelain body. The body is designed to provide high electrical insulation and mechanical stability. It is mounted with four gold-plated brass mounting screws, and the mounting surface is flat to ensure proper seating during installation.
The operating temperature range for this potentiometer is between 0 C to 50 C (32 F to 122 F), ensuring compatibility with various laboratory environments. Beckman Coulter's 8211-R2K-L.5 potentiometer is a reliable and stable solution for precision voltage regulation and resistance adjustment in a wide range of scientific applications.
**Background:** The Beckman 8211-R2K-L.5 is a 2K linear potentiometer manufactured by Hamamatsu Photonics. It is a popular choice for research applications due to its high precision and stability, but like any other product, it comes with its advantages and disadvantages.
**Pros:**1. High Precision: This potentiometer offers a linear taper and a maximum resistance of 2,000 ohms. It is popular among researchers due to its excellent precision, with a maximum errors of 0.05% for full-scale resistance, and a temperature coefficient of 50 ppm/ C, ensuring stable and accurate measurements.
2. Low Temperature Drift: The Beckman 8211-R2K-L.5 has a low temperature drift, making it more suitable for applications that require minimal change in resistance over temperature. This feature is critical in applications where precise measurements are required over an extended period.
3. Robust Design: The potentiometer is housed in a high-temperature epoxy resin body, providing excellent thermal stability and protection against moisture and damage. It also features gold-plated terminals, ensuring good electrical contact and longevity.
**Cons:**1. Cost: Compared to off-the-shelf potentiometers, the Beckman 8211-R2K-L.5 is relatively more expensive due to its high precision and stability properties. This cost may be a deterrent for researchers with limited budgets or those who only require basic measurements.
2. Sensitivity to Vibration: While the Beckman 8211-R2K-L.5 has good stability, it is sensitive to external vibrations. Researchers handling this potentiometer should take care to minimize vibrations during operation, which may affect the accuracy of the measurements.
**Conclusion:**The Beckman 8211-R2K-L.5 potentiometer offers high precision and stability that is ideal for research applications. Its robust design, low temperature drift, and good thermal stability make it a suitable choice for applications that require long-term stability and consistent measurements. However, its cost and sensitivity to vibrations may be significant drawbacks for some researchers.
**Recommendation:**If you are in a research field where precise and stable measurements are essential, the Beckman 8211-R2K-L.5 potentiometer is worth considering, despite its higher cost. If you require a more cost-effective solution, consider alternative, less-precise potentiometers for your application. Additionally, ensure that your experimental setup is adequately isolated from vibrations to minimize any impact on the accuracy of your measurements.
Box has distress, handwriting. Nature of the item. Price of the item. Beckman 8211-R2K-L.5 potentiometer 2k ohm, new, old stock in box.
