1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your BOURNS 3852A-162-501A Cermet Potentiometer. Please read these instructions carefully before use to ensure optimal performance and longevity of the device.
The BOURNS 3852A-162-501A is a single-turn cermet potentiometer designed for panel mounting, offering a resistance of 500 Ohms with a 10% tolerance and a 2-watt power rating. Its robust construction makes it suitable for various industrial and electronic applications requiring precise resistance adjustment.
2. Product Overview
Figure 1: BOURNS 3852A-162-501A Cermet Potentiometer. This image shows the potentiometer with its three solder lugs for electrical connection and the threaded shaft for panel mounting and adjustment.
3. Setup and Installation
3.1 Safety Precautions
- Ensure all power is disconnected before installation or wiring.
- Wear appropriate personal protective equipment (PPE), such as safety glasses.
- Handle with care to avoid damaging the terminals or the internal mechanism.
3.2 Mounting Instructions
- Prepare a suitable panel opening for the potentiometer's threaded shaft (6.35mm diameter).
- Insert the potentiometer shaft through the panel opening.
- Secure the potentiometer to the panel using the provided nut and washer. Tighten firmly but do not overtighten.
3.3 Electrical Connections
The potentiometer features solder lugs for electrical connections. Refer to your circuit diagram for specific wiring. A typical connection involves:
- Terminal 1 (End Terminal): Connect to one end of the voltage source or signal.
- Terminal 2 (Wiper Terminal): Connect to the output or variable resistance point.
- Terminal 3 (End Terminal): Connect to the other end of the voltage source or ground.
Ensure clean, secure solder joints to prevent intermittent connections or resistance fluctuations.
4. Operating Instructions
The BOURNS 3852A-162-501A is a single-turn potentiometer, meaning its full resistance range is covered within one complete rotation of the shaft.
- Adjustment: Rotate the shaft clockwise or counter-clockwise to adjust the resistance value.
- Resistance Range: The resistance will vary from approximately 0 Ohms to 500 Ohms as the shaft is rotated from one extreme to the other.
- Monitoring: Use a multimeter or appropriate measurement device to verify the desired resistance or voltage output during adjustment.
Note: Avoid forcing the shaft beyond its mechanical stops, as this can cause internal damage to the potentiometer.
5. Maintenance
The BOURNS 3852A-162-501A Cermet Potentiometer is designed for long-term reliability with minimal maintenance. However, adhering to these guidelines can extend its lifespan:
- Cleaning: Keep the potentiometer free from dust, dirt, and moisture. Use a soft, dry cloth for external cleaning. Avoid using solvents or abrasive cleaners.
- Environmental Conditions: Operate and store the potentiometer within its specified temperature and humidity ranges to prevent degradation.
- Inspection: Periodically inspect solder connections for integrity and ensure the mounting nut remains secure.
6. Troubleshooting
If you encounter issues with your potentiometer, consider the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No resistance change / Open circuit |
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| Intermittent resistance / Noise |
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| Resistance value out of specification |
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7. Specifications
| Feature | Detail |
|---|---|
| Model Number | 3852A-162-501A |
| Type | Cermet Potentiometer |
| Nominal Resistance | 500 Ohms |
| Resistance Tolerance | ±10% |
| Power Rating | 2 Watts |
| Turns (Electrical/Mechanical) | 1 Turn / 1 Turn |
| Shaft Diameter | 6.35mm |
| Dimensions (L x W x H) | 19.05 x 19.05 x 23.55mm (approximate body dimensions) |
| Mounting Type | Solder Lug Panel Mount |
| Manufacturer | Bourns |
8. Warranty Information
BOURNS products are manufactured to high-quality standards. This potentiometer is covered by the standard manufacturer's warranty against defects in materials and workmanship under normal use. The warranty period typically begins from the date of purchase. Please refer to the official BOURNS website or contact their customer service for detailed warranty terms and conditions specific to the 3852A-162-501A model.
Damage resulting from improper installation, misuse, unauthorized modification, or operation outside of specified environmental limits is not covered by the warranty.
9. Customer Support
For technical assistance, product inquiries, or warranty claims, please contact BOURNS customer support:
- Website: Visit the official BOURNS website for product datasheets, application notes, and contact information.
- Contact Form: Use the contact form available on their website for specific inquiries.
- Distributor: Contact your authorized BOURNS distributor for local support.
When contacting support, please have your product model number (3852A-162-501A) and purchase details readily available.
