MODEL 7246 7/8 Diameter 10Turn Wirewound 2 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 25C derating to 0 at 85C 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 ENVIRONMENTAL (MIL-R-12934) Operating Temperature Range 25C to +85C Temperature Cycling 5 cycles, 25C to +85C (10% R) Shock, 6ms Sawtooth 50Gs (0.1ms discontinuity max.) Vibration 10Gs, 10 to 500 Hz (2% R, 0.1ms discontinuity max.) Moisture Resistance Five 24 hour cycles (25% R) High Temperature Exposure Mechanical Operation at 85C (0.5% R) Rotational Load Life 1 mil. shaft rev. (10% R) Specifications subject to change without notice. Available in a Hybrid version contact factory for details. 2-89 Model 7246MECHANICAL 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. 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. SPECIAL FEATURES Center Tap CT Linearity Tape LT Flatted Shaft FS Shaft Lock SL 2-90 Model 7246