Instrument Potentiometers
Samarius Models M-300 and M-301 are newly designed potentiometers that provide a construction suitable to both DC and audio frequency applications.
These three- inch units are designed primarily low capacitance is required. This is obtained by the use of an all-phenolic body and precision molded diallylphthalate cover plates together with non-metallic card winding.
Special types are available in the M-300 Series to meet customer requirements - multi-gang, additional taps, special resistance and linearity tolerances, shaft lengths and shaft extensions, etc.
Samarius' Engineering Department welcomes the opportunity to work with customers on non-standard configurations. Submit your drawing, specification or sketch-it will receive our immediate attention.
SPECIFICATIONS
|
POWER RATING: |
M-300, 6 watts. M-301, 11 watts |
|
ROTATION: |
Effective electrical rotation 320±2° Total mechanical rotation, 330±5° |
|
RESISTANCE: |
Linear or no-linear on flat, fungus-resistant, card. resistance tolerance ±5% standard, ±1% on order. 100 ohms to 0.5 megohms, linear. |
|
INDEPENDENT LINEARITY: |
±5% standard. ±0.1% on order |
|
TORQUE: |
Average 2-4 in. oz. |
|
WIRE: |
Various alloys are used depending on particular application. Generally, wire with temperature coefficient of 0.00002 is specified. |
|
SHAFT: |
M-300 uses 1/4" stainless steel; M-301 is 3/8" reinforced Bakelite. |
|
CASE: |
Fungus-resistant Bakelite shell. End covers are molded diallylphthalate. |
|
TAPS: |
Available to within ±6% standard. |
| CONTACT MATERIALS: |
Precious metal multi-finger brush and collector contacts. Hard gold plated slip ring and terminals. |
| 
