MODEL 7246
7/8” Diameter
10–Turn
Wirewound
Precision Potentiometer
ELECTRICAL
2
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
Tap Tolerance
End Voltage, Maximum (% of input voltage)
10 to 125K
±5%
±3%
±0.25%
±0.25%, <100 Ohms
±0.15%,
≥
100 Ohms
2.0 at 25°C derating to 0 at 85°C
1,000V rms
1,000 Megohms
100 Ohms
3600° + 10° – 0°
±5°,
≤20
Ohms
±3°, 21-50 Ohms
±2°, >50 Ohms
0.5%, <100 Ohms
0.25%,
≥100
Ohms
ENVIRONMENTAL (MIL-R-12934)
Operating Temperature Range
Temperature Cycling
Shock, 6ms Sawtooth
Vibration
Moisture Resistance
High Temperature Exposure
Rotational Load Life
Specifications subject to change without notice.
Available in a Hybrid version – contact factory for details.
–25°C to +85°C
5 cycles, –25°C to +85°C (10%
∆R)
50G’s (0.1ms discontinuity max.)
10G’s, 10 to 500 Hz (2%
∆R,
0.1ms discontinuity max.)
Five 24 hour cycles (25%
∆R)
Mechanical Operation at 85°C (0.5%
∆R)
1 mil. shaft rev. (10%
∆R)
2-89
Model 7246
MECHANICAL
Total Mechanical Travel
Number of Gangs, Maximum
Weight, Nominal
Static Stop Strength
Backlash, Maximum
Panel Nut Tightening Torque, Maximum
Shaft End Play, Maximum
Shaft Radial Play, Maximum
Start/Run Torque, Maximum
STANDARD RESISTANCE VALUES, OHMS
3600° + 10° – 0°
1
1.25 oz.
60 oz.-in.
2°
25 lb.-in.
.015”
.005”
0.8 / 0.6 oz.-in.
Total
Resistance
10
50
100
200
500
1K
2K
5K
10K
20K
50K
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 as a special model.
Tempco
of Wire
+ 800 ppm/°C *
+ 800 ppm/°C *
+ 800 ppm/°C *
+ 800 ppm/°C *
±20 ppm/°C
±20 ppm/°C
±20 ppm/°C
±130 ppm/°C *
±130 ppm/°C *
±130 ppm/°C *
±20 ppm/°C
±20 ppm/°C
SPECIAL FEATURES
Center Tap
Linearity Tape
Flatted Shaft
Shaft Lock
CT
LT
FS
SL
2-90
Model 7246
OUTLINE DIMENSIONS (Inch/mm)
Mounting Surface
.812±.031
20.6±0.79
1.469
Max.
37.31
Slider
CCW
CW
+.0000
.2500 -.0005
Dia.
+0.0000
6.350 -0.0127
+.000
.406 -.002
Dia.
+0.00
10.312 -0.05
.625 R Max.
15.9
Slot
.032±.005 Wide
0.813±0.127
.032+.010
-.000
Deep
0.813+0.254
-0.000
Angular Location
Optional
2
+.000
.062 -.010
Dia.
+0.00
1.575 -0.25
.312±.016
7.93±0.41
Chamfer
.016/0.41 Max. x 45°
3/8 - 32 UNEF Thread
.875±.016 Dia.
22.2±0.41
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
CIRCUIT DIAGRAM
NOTES
(S)
(CCW)
(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
INCH
mm
2-91
Model 7246
单片机
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