7246 BITECH | Alldatasheet
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Technical content
7/8” Diameter 10–Turn Wirewound Precision Potentiometer ELECTRICAL Resistance Range, Ohms 10 to 125K Standard Resistance Tolerance ±5% Minimum Practical Resistance Tolerance ±3% Independent Linearity ±0.25% Minimum Practical Independent Linearity ±0.25%, <100 Ohms ±0.15%, ≥ 100 Ohms Power Rating, Watts 2.0 at 25°C derating to 0 at 85°C Dielectric Strength 1,000V rms Insulation Resistance, Minimum 1,000 Megohms Noise, Maximum 100 Ohms Actual Electrical Travel 3600° + 10° – 0° Tap Tolerance ±5°, ≤20 Ohms ±3°, 21-50 Ohms ±2°, >50 Ohms End Voltage, Maximum (% of input voltage) 0.5%, <100 Ohms 0.25%, ≥100 Ohms Specifications subject to change without notice. Available in a Hybrid version – contact factory for details. ENVIRONMENTAL (MIL-R-12934) Operating Temperature Range –25°C to +85°C Temperature Cycling 5 cycles, –25°C to +85°C (10% ∆R) Shock, 6ms Sawtooth 50G’s (0.1ms discontinuity max.) Vibration 10G’s, 10 to 500 Hz (2% ∆R, 0.1ms discontinuity max.) Moisture Resistance Five 24 hour cycles (25% ∆R) High Temperature Exposure Mechanical Operation at 85°C (0.5% ∆R) Rotational Load Life 1 mil. shaft rev. (10% ∆R)
STANDARD RESISTANCE VALUES, OHMS Theoretical Total Resolution Tempco Resistance (% Nominal) of Wire 10 0.083 + 800 ppm/°C * 50 0.048 + 800 ppm/°C * 100 0.040 + 800 ppm/°C * 200 0.033 + 800 ppm/°C * 500 0.031 ±20 ppm/°C 1K 0.028 ±20 ppm/°C 2K 0.025 ±20 ppm/°C 5K 0.020 ±130 ppm/°C * 10K 0.018 ±130 ppm/°C * 20K 0.016 ±130 ppm/°C * 50K 0.012 ±20 ppm/°C 100K 0.011 ±20 ppm/°C * Lower tempco available as a special model. MECHANICAL Total Mechanical Travel 3600° + 10° – 0° Number of Gangs, Maximum 1 Weight, Nominal 1.25 oz. Static Stop Strength 60 oz.-in. Backlash, Maximum 2° Panel Nut Tightening Torque, Maximum 25 lb.-in. Shaft End Play, Maximum .015” Shaft Radial Play, Maximum .005” Start/Run Torque, Maximum 0.8 / 0.6 oz.-in.
OUTLINE DIMENSIONS (Inch/mm) .625 15.9 R Max. Slot .032±.005 0.813±0.127 Wide .032+.010 -.000 0.813+0.254 -0.000 Deep Angular Location Optional.875±.016 22.2±0.41 Dia. Mounting Surface .812±.031 20.6±0.79 +.0000 -.0005 +0.0000 -0.0127 Dia. +.000 -.002 +0.00 -0.05 Dia. .2500 6.350 .406 10.312 Chamfer .016/0.41 Max. x 45° 3/8 - 32 UNEF Thread .312±.016 7.93±0.41 +.000 -.010 +0.00 -0.25 .062 1.575 Dia. 1.469 37.31 Max. Slider CCW CW
ORDERING INFORMATION
7246 R 10K T2 L .25 XX Model Series Resistance Prefix Resistance Value Optional Special Feature Code Linearity Optional Non-Standard Tolerance MATCHING TURNS COUNTING DIALS 2606, 2606S, 2607, 2607S, 2626, 2627, 2646, 2646S, 2647, 2647S, 2126, RB (CCW) (S) (CW) Metric equivalents, based on 1 inch = 25.4mm are rounded to the same number of significant figures as in the original English units and are provided for general information only. Tolerances unless otherwise specified: Linear = ± .01 inches (.25mm) Angular = ± 2 degrees NOTES mm INCH CIRCUIT DIAGRAM