Model 11 Multidial
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Vishay Spectrol
Mounting Instructions
PRINCIPLES OF OPERATION
The inner scale of the Model 11 Multidial is graduated in fiftieths of a turn. The outer scale (read through the viewing window)
counts the number of turns (0 to 10) that have been completed.
Example: If the numeral in the window reads 7 and the inner scale reads 22, the reading is 7 turns plus
turn. In the case of a 10-turn potentiometer, this equals 72.2 % of 10 turns.
22/
100
of the eighth
Each complete revolution of the inner scale transfers the outer scale numerals in the window. Numeral transfer on the outer
scale occurs between 97 and 0 on the inner scale. If two numerals appear in the window at the instant of transfer, read the lower
of the two.
MOUNTING INSTRUCTIONS
The following instructions apply when the Model 11 Multidial is used on a 1/8" panel in conjunction with Spectrol 500 or 800
series potentiometers or rotary components:
1. Drill a 0.063" (1.6 mm) diameter hole 0.375" (9.52 mm) below the horizontal centerline of potentiometer mounting hole.
2. Mount the potentiometer or component to the panel.
3. Turn the shaft of the potentiometer against its counterclockwise stop.
4. Turn the inner scale of the Model 11 Multidial so that “0” appears in the viewing window and the inner scale reads higher
than 10.
5. With the braking lever released (in the counterclockwise position) slip the Model 11 Multidial over the potentiometer shaft.
The locating lug on the multidial should enter the hole drilled in the panel.
6. Seat the Model 11 Multidial lightly against the panel.
7. Turn the inner scale counterclockwise slowly until “0” of the inner scale is opposite the index mark. Then tighten the set
screw firmly against the potentiometer shaft.
8. The dial is now ready to operate.
+ 0.000
+0
0.875 - 0.015 (22.22 - 0.38 )
MOUNTING FACE
+ 0.015
COUNTING DIAL
R 0.656 ± 0.015
(16.66 ± 0.38)
50° ± 5°
)
0.063 (1.6)
TURNING KNOB
30° ± 5°
+ 0.38
0.125 - 0.000 (3.17 - 0
+ 0.001
DRIVE SLEEVE
+ 0.03
Ø 0.250 - 0.000 (6.35 - 0
)
Ø 0.382 (9.70) Ø 0.500 ± 0.015
(12.7 ± 0.38)
BREAK LEVER
GRADUATED DIAL
+ 0.000
BASE
+0
0.046 - 0.015 (1.17 - 0.38 )
SET SCREW
0.195 (4.95)
Ø 1.00 ± 0.015
(25.40 ± 0.38)
+ 0.38
+ 0.015
0.272 - 0.000 (6.91 - 0
0.510
+ 0.031
+ 0.000
- 0.015
+ 0.79
0.812 - 0.000 (20.62 - 0
(12.95
)
+0
- 0.38 )
)
R 0.225 (5.72)
Ø 9.5
0.375
(9.52)
0.040
(1.02)
REAR VIEW
Revision: 02-Aug-12
9.5
0.062 ± 0.001
(1.57 ± 0.03)
Ø 1.6
Document Number: 57107
1
For technical questions, contact: sferprecisionpot@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000