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Underwater Rotary Potentiometer

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.

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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.

Underwater Rotary Potentiometer.jpg

Shipping List: 

The following items are included: 

• 1 x Rotary Potentiometer 

• 1 x O- ring 

• 1 x Nut

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Specifications

         Item         SKU       Material    Appearance    O-ring Size O-ring Material Unit Price(US$)
M10 Underwater Rotary Potentiometer 12020801-0010    AluminumBlack Bulkhead, Red Rotary Knob    Ø12 × 1.5FKM75 Brown Fluorine Rubber          34.5

SPECRotary Potentiometer
Maximum Rated Depth1000 meters / 3280 ft
Design Lifetime3 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 ResistanceCRV≤1%R or 2Ω
Total Mechanical Travel240°±10°
Effective Electric Travel230°±10°
Rated Mechanical Durability200cycles, ΔR≤±10%R
Temperature Rating (air)-25 ~ 60°C  / -13 ~ 140°F
Temperature Rating (water)-4 ~ 40°C / 32 ~ 104°F
Bulkhead MaterialAluminum
Thread SpecificationM10×1

Dimensions:

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Resistance Value (Ω)Resistance Code
10000103


Wiring Definition:


Red: Movable Contact


Green: CCW


Yellow: CW

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Recommended Size:

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Recommended SizeRotary Potentiometer
Recommended Bulkhead Through Hole Size (A)Ø10.1±0.1 / Threaded
Hatch Cover Thickness (B)13
Surface Range (C)

20

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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.



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