2 2-5 model a electrical resistance range, ohms 10 to 500k standard resistance tolerance < 100 ohms = ?%, 100 ohms = ?% minimum practical resistance tolerance ?% independent linearity < 300 ohms = ?.50%, 300 ohms = ?.25% minimum practical independent linearity ?.15%, 20 ohms ?.10%, < 100 ohms ?.075%, < 300 ohms ?.05%, 300 ohms power rating, watts 5.0 at 40? derating to 0 at 85? input voltage, maximum 1,000vdc not to exceed power rating dielectric strength 1,000v rms insulation resistance, minimum 1,000 megohms noise, maximum 500 ohms: rt 2613.7 ohms 250 ohms: rt > 2613.7 ohms actual electrical travel 3600 + 4 ?0 tap tolerance 20 ohms = ?? < 100 ohms = ? < 300 ohms = ?.5? 300 ohms = ? end voltage, maximum 10 ohms = 3%, 25 ohms = 1.2% (% of input voltage) 50 ohms = 0.6%, 100 ohms = 0.25% environmental (mil-r-12934) operating temperature range static: ?5? to +85? dynamic: ?0? to +85? temperature cycling 5 cycles, ?5? to +85? (5% ? r) shock, 6ms sawtooth 100g? (0.1ms discontinuity max.) vibration 6 hours, 10 to 55 hz (5% ? rt, 0.1ms discontinuity max.) moisture resistance ten 24 hour cycles (3% ? r) high temperature exposure 1,000 hours at 85? (5% ? r) rotational load life 2 mil. shaft rev. + 900 hrs. at rated wattage at 40? (5% ? r) model a 1-13/16?diameter 10-turn wirewound precision potentiometer specifications subject to change without notice. this model available in a hybrid version ?contact factory for details.
theoretical total resolution tempco resistance (% nominal) of wire 10 0.082 +800 ppm/? * 25 0.040 +800 ppm/? * 50 0.031 +800 ppm/? * 100 0.040 ?0 ppm/? 200 0.031 ?0 ppm/? 500 0.024 ?0 ppm/? 1k 0.021 ?0 ppm/? 2k 0.016 ?0 ppm/? 5k 0.014 +130 ppm/? * 10k 0.011 +130 ppm/? * 20k 0.009 +130 ppm/? * 50k 0.007 +130 ppm/? * 100k 0.006 ?0 ppm/? 200k 0.005 ?0 ppm/? 300k 0.005 ?0 ppm/? 500k 0.005 ?0 ppm/? 2-6 model a mechanical total mechanical travel 3600 + 4 ?0 number of gangs, maximum 3 weight, nominal (single gang) 4.4 oz. static stop strength 550 oz.-in. backlash, maximum 1 panel nut tightening torque, maximum 25 lb.-in. shaft end play, maximum .005 shaft runout, t.i.r., maximum .0005 pilot diameter runout, t.i.r., maximum .002 lateral runout, t.i.r., maximum .003 shaft radial play, maximum .003 start/run torque, maximum (per gang) 3.0 oz.-in. standard resistance values, ohms * lower tempco available as a special model.
2 2-7 model a outline dimensions (inch/mm) 1.250 31.75 r max. .562 .016 14.3 0.41 2 & 3 gang outline mounting surface .062 .016 1.58 0.41 .812 .031 20.6 0.79 +.000 -.002 +0.000 -0.051 .406 10.312 dia. dia. +.0000 -.0003 +0.0000 -0.0076 .2497 6.3424 chamfer .016 0.41 max. x 45 3/8 - 32 unef thread locating lug .125 .005/3.175 0.127 dia. positioned as shown 5 .062 .016 1.58 0.41 .312 .016 7.93 0.41 .312 .025 7.93 0.64 1.812 .016 46.03 0.41 dia. rs m l slider cw ccw dim. l dim. rs no. of gangs dim. ? 4.243 107.78 2 3 4.205 .031 106.81 0.79 5.016 .031 127.41 .0.79 max. 6.143 156.04 max. 6.100 .031 154.94 0.79 6.906+.031 175.42 0.79 2.016 51.21 1 max. 2.062 .031 52.38 0.79 2.875 .031 73.03 0.79 metric conversions 1 in. 25.4mm 1 oz. 28.4 gm 1 oz.-in. 0,007 n-m 1 lb.-in. 0,113 n-m
2-8 model a 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 matching turns counting dials ordering information circuit diagram 2606, 2607, 2626, 2627, 2646, 2647, 2126, 2606s, 2607s, 2646s, 2647s, rb a r 10k t2 l .25 xx model series resistance prefix resistance value optional special feature code linearity optional non-standard tolerance (ccw) (s) (cw) notes mm inch special feature codes center tap ct linearity tape lt rear shaft extension rs flatted shaft fs slotted shaft ss shaft lock sl color coded cc additional gangs 2g or 3g
|
