7/8" Diameter 10-Turn Wirewound Precision Potentiometer Resistanc
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MODEL 7246
7/8" Diameter 10-Turn Wirewound Precision Potentiometer
Resistance Range, Ohms Standard Resistance Tolerance Minimum Practical Resistance Tolerance Independent Linearity Minimum Practical Independent Linearity Power Rating, Watts Dielectric Strength Insulation Resistance, Minimum Noise, Maximum Actual Electrical Travel Tolerance
Voltage, Maximum input voltage)
125K ±0.25% ±0.25%, <100 Ohms ±0.15%, Ohms 25°C derating 85°C 1,000V 1,000 Megohms Ohms 3600° ±5°, Ohms ±3°, 21-50 Ohms ±2°, Ohms 0.5%, <100 Ohms 0.25%, Ohms
ENVIRONMENTAL (MIL-R-12934)
Operating Temperature Range Temperature Cycling Shock, Sawtooth Vibration Moisture Resistance High Temperature Exposure Rotational Load Life
Specifications subject change without notice. Available Hybrid version contact factory details.
-25°C +85°C cycles, -25°C +85°C (10% 50G's (0.1ms discontinuity max.) 10G's, 0.1ms discontinuity max.) Five hour cycles (25% Mechanical Operation 85°C (0.5% mil. shaft rev. (10%
2-89
Model 7246
MECHANICAL
Total Mechanical Travel Number Gangs, Maximum Weight, Nominal Static Stop Strength Backlash, Maximum Panel Tightening Torque, Maximum Shaft Play, Maximum Shaft Radial Play, Maximum Start/Run Torque, Maximum
STANDARD RESISTANCE VALUES, OHMS
3600° 1.25 oz.-in. lb.-in. .015" .005" oz.-in.
Total Resistance 100K
Theoretical Resolution Nominal) 0.083 0.048 0.040 0.033 0.031 0.028 0.025 0.020 0.018 0.016 0.012 0.011
Lower tempco available special model.
Tempco Wire ppm/°C ppm/°C ppm/°C ppm/°C ppm/°C ppm/°C ppm/°C ±130 ppm/°C ±130 ppm/°C ±130 ppm/°C ppm/°C ppm/°C
SPECIAL FEATURES
Center Linearity Tape Flatted Shaft Shaft Lock
2-90
Model 7246
OUTLINE DIMENSIONS (Inch/mm)
Mounting Surface .812±.031 20.6±0.79 1.469 Max. 37.31 Slider
+.0000 .2500 -.0005 Dia. +0.0000 6.350 -0.0127 +.000 .406 -.002 Dia. +0.00 10.312 -0.05
.625 Max. 15.9 Slot .032±.005 Wide 0.813±0.127 .032+.010 -.000 Deep 0.813+0.254 -0.000 Angular Location Optional
+.000 .062 -.010 Dia. +0.00 1.575 -0.25 .312±.016 7.93±0.41
Chamfer .016/0.41 Max. UNEF Thread
.875±.016 Dia. 22.2±0.41
ORDERING INFORMATION
7246 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,
CIRCUIT DIAGRAM
NOTES
(CCW) (CW)
Metric equivalents, based inch 25.4mm rounded same number significant figures original English units provided general information only. Tolerances unless otherwise specified: Linear inches (.25mm) Angular degrees
INCH
2-91
Model 7246
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