H-46-6A【PDF 1/1 页】COUNTING DIAL 0-20 TURNS

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Sheet目录861

[1页]

Features

■ Large package size

■ For use with precision potentiometers up to

Applications

■ Power supplies

■ Sensors

■

20 turns

Excellent readability

Precision feel - no backlash

Cast housing

RoHS compliant*

■ Medical

■ Automation

■ Test equipment

H-46 Turns-Counting Dial

Mechanical and Physical Characteristics

Number of Turns ............................................................................................................................................................................. 0 to 20

Dial Divisions ...........................................................................................................................................................................100 per turn

Readability – Over 10 Turns .....................................................................................................................................Within 1/100 of a turn

Torque With Brake Engaged ..............................................................................................................21.18 N-cm (30.0 oz.-in.) maximum

Markings ..................................................................................................................................................... Black on chrome background

Locking Brake .......................................................................................................................................................................................Yes

Weight ............................................................................................................................................................................73 grams (2.5 oz.)

Set Screw ..........................................................................................................................................................UNC N4-44, one included

Set Screw Tightening Torque ...............................................................................................................16.94 N-cm (1.5 lbs.-in.) minimum

Hex Key Size ........................................................................................................................................................................... 1.5 mm hex

Shaft and Bushing Requirements

Shaft Diameter Requirements ................................................................................................................................... Refer to chart below

Shaft Extension Beyond Panel .................................................................................................................... 17.5 mm (0.689 in.) minimum

23.5 mm (0.925 in.) maximum

Bushing Extension Beyond Panel ................................................................................................................ 4.5 mm (0.177 in.) maximum

H-46 MOUNTING INSTRUCTIONS

Using the existing Antirotation Lug

1. Drill 3.2 mm (0.125) diameter antirotation

pin hole on vertical centerline 14.3 mm

(0.562) below center of potentiometer

mounting hole.

2. Mount potentiometer shaft counterclock-

wise to obtain minimum resistance or

voltage ratio. This is not necessarily

identical with the mechanical stop.

3. Loosen set screws in knob of dial. Set dial to “0.0” reading.

4. While holding outer ring of dial, position unit lightly against

panel. Tighten knob set screws to potentiometer shaft.

Dimensional Drawings

Using the Antirotation Device

1. Remove antirotation lug from dial

by using pliers.

2. Mount potentiometer in panel with

antirotation device nut (supplied

with dial) and lockwasher (supplied

with potentiometer).

3. Turn potentiometer shaft counter-

clockwise to obtain minimum

resistance or voltage ratio. This is

not necessarily identical with the

mechanical stop.

Loosen set screws in knob of dial. Set dial to “0.0” reading.

While holding outer ring of dial, position unit lightly against panel.

Tighten knob set screws to potentiometer shaft.

How To Order

24.0

Part

Accepts Shaft

(.944)

Number

Diameter

Finish

12.50

(.492)

10.31

(.405)

PANEL LAYOUT

DIA.

H-46-6A

H-46-6M

6.35 mm (.250)

6 mm (.236)

Satin

Chrome

Satin

Chrome

46.0

(1.811)

14.30

(.562)

DIMENSIONS:

(INCHES)

3.17

(.124)

DIA.

REV. 01/14

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.

Speci?cations are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their speci?c applications.

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