Product Overview
2K Ohm 10-Turn Wirewound Precision Potentiometer, 0.25% Linearity, BI Marked
Condition
Condition: unused, new old stock (NOS). Markings legible: A R2K L.25, the BI logo, MEXICO and -9620, with a CCW terminal marking near one lug. Sold each. Verify suitability before use.
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Product Overview
Beckman Industrial's Helipot Model A is a 10-turn precision potentiometer: the shaft makes ten full revolutions to carry the wiper from one end of the element to the other, so a knob or dial can set a voltage or resistance in fine steps. The case reads A R2K L.25 above the BI logo of Beckman Industrial - Model A, 2K total resistance, 0.25% linearity.
Key Features
- Helipot Model A multi-turn precision potentiometer
- 10 turns of shaft travel, end to end
- 2K (2,000 ohm) total resistance, marked R2K
- 0.25% linearity, marked L.25
- Wirewound resistance element
- Solder-lug terminals along the top of the cylindrical case; shaft exits one end
- Case marked A R2K L.25, BI logo, MEXICO, -9620
Applications
- Replacing a worn 2K Helipot behind the front panel of a lab supply, bridge or calibrator
- Setting a reference voltage by hand where a single-turn pot is too coarse to land on the number
- Pairing with a turns-counting dial so an operator can log and return to a setting
- Fine tuning control on a ham radio antenna tuner, oscillator or audio test build
- Precise speed or position setpoint for a maker's CNC, motor or synthesizer project
Frequently Asked Questions
What does the marking A R2K L.25 mean?
A is the Helipot model, R2K is the 2K (2,000 ohm) total resistance, and L.25 is the 0.25% linearity grade. The -9620 line is a separate stamped code on the case.
How many turns does it take from end to end?
Ten full turns of the shaft cover the whole element.
Does it come with a knob or turns-counting dial?
Not included.
Why buy this single pot instead of chasing a surplus lot?
When a Helipot fails in an instrument, the fix is one pot with the right value and linearity grade, not a box of mixed pulls. This one carries its model, value and grade printed on the case, so you know what you are getting before it arrives.
The Helipot name is short for helical potentiometer: a resistance element wound into a spiral so ten turns of the shaft fit inside one can. If a front panel of yours has been waiting on a 2K with a quarter-percent track, this one already knows the way around.
