Description
This potentiometer is an underwater rotary knob of M10 specification, which is commonly used for the input of electroless adjustment signal of underwater equipment, such as speed adjustment, brightness adjustment and other control scenarios requiring electroless rotation.
It can withstand water pressure to a depth of 1000 meters, and the enlarged rotary knob with non-slip grains is suitable for manual operation.
Shipping List
The following items are included:
- 1 x Rotary Potentiometer
- 1 x O- ring
- 1 x Nut
Specifications
| Item | SKU | Material | Appearance | O-ring Size | O-ring Material | Unit Price(US$) |
|---|---|---|---|---|---|---|
| M10 Underwater Rotary Potentiometer | 12020801-0010 | Aluminum | Black Bulkhead, Red Rotary Knob | Ø12 × 1.5 | FKM75 Brown Fluorine Rubber | 28.8 |
| SPEC | Rotary Potentiometer |
|---|---|
| Maximum Rated Depth | 1000 meters / 3280 ft |
| Design Lifetime | 3 years or 500 cycles |
| Rated Power (315Vmax) | 0.5W 70℃ |
| Temperature Coefficient | ±250ppm/℃ |
| Tolerance of Resistance Value | ±10% |
| Terminal Resistance | ≤1%R or 2Ω (Maximize) |
| Change in Contact Resistance | CRV≤1%R or 2Ω |
| Total Mechanical Travel | 240°±10° |
| Effective Electric Travel | 230°±10° |
| Rated Mechanical Durability | 200cycles, ΔR≤±10%R |
| Temperature Rating (air) | -25 ~ 60°C / -13 ~ 140°F |
| Temperature Rating (water) | -4 ~ 40°C / 32 ~ 104°F |
| Bulkhead Material | Aluminum |
| Thread Specification | M10×1 |
Dimensions:
| Resistance Value (Ω) | Resistance Code |
| 10000 | 103 |
Wiring Definition:
Red: Movable Contact
Green: CCW
Yellow: CW
Recommended Size:
| Recommended Size | Rotary Potentiometer |
|---|---|
| Recommended Bulkhead Through Hole Size (A) | Ø10.1±0.1 / Threaded |
| Hatch Cover Thickness (B) | 13 |
| Surface Range (C) | 20 |
Guides
FAQ
● Can it rotate indefinitely? What will happen if I continue to rotate with brute force after reaching the limit?
Infinite rotation is not possible. The total mechanical travel is limited to 240°±10°. Exceeding the maximum operating torque will cause permanent damage to the potentiometer.
● How can I control the throttle of motor rotation with this potentiometer? How can I control the brightness of the light?
You can connect the potentiometer to the voltage divider circuit, read the voltage value through the microcontroller and calculate the resistance value. Then send the control amount of motor or light through the microcontroller.
● Is it self-resetting?
No, it will stay in the rotating position with certain resistance, and needs to be reset to the origin manually.
● Is it finite, or can it be rotated 360 degrees?
It's finite bit, not infinitely rotating.
● Does temperature affect the resistance value?
Yes, the temperature coefficient is ±250ppm/℃.
● Will the nut be loosened when rotating?
Possibly, you can add thread adhesive to the nut, or add anti-loosening and anti-slip spacers to the end of the nut.
● Does the knob move up and down during rotation?
No, the knob position is fixed.