| |
Introduction • On Precision Pots • General Product Definitions • Construction Details • Multiturn Precision Pots • Resistive Elements • Terminals • Shaft-Rotor Assembly • Mechanical Rotation • Mounting Methods • 3540 Family • 3590 Family • Knobpot 3600 Family • Single-Turn Precision Pots • 6537/6637 Family • 6539/6639 Family • 3680 Pushbutton Family • Special Precision Pots • Shafts • Mounting Styles • Bearings • Torque • Linearity • Wiper Load • Low Current Applications • High Rotational Speed • Angles • Additional Taps • Sealed Units • Multicup Assemblies • Envelopes •
Environmental • Competition •
Useful Terms
Environmental Considerations
In general, the most successful "design-ins" of potentiometers occurs when there is a clear understanding of the design and application, including the environment in which the unit will ultimately operate. Some additional factors to consider are:
| Temperature |
– |
Operating temperatures below 0°C may require special lubricants. |
| Rotational speed |
– |
Speeds greater than 60 RPM may require special lubricants or construction modifications, especially if continuous measurement is required. |
| Contaminants |
– |
Water, oil and/or corrosive environments will affect the component accuracy and life. Sealed and oil-filled units are available for such applications. |
| Shock |
– |
Extreme vibration and shock may call for special construction techniques to prevent wiper setting drift or wiper discontinuity. |
| Electrical |
– |
The electrical circuitry associated with an application can influence the impact of other environmental factors. There may be alternatives that result in lower overall cost and/or improved performance. |
Do not hesitate to call on your local Bourns Field Application Engineer for technical assistance. There may be alternate solutions available that will save the customer both time and money.
|
