Mission Industries, Inc.
Digital Position Indicators

Operation

Mission Industries digital position indicators are shaft driven mechanical measuring devices. Each indicator incorporates a geared number wheel set. Numerals change along the reading line as the actuating shaft on which the instrument is mounted rotates clockwise or counterclockwise. The reading line shows five numerals in line, broken at the decimal position by a number color change. See numeral layout below.

A zero adjusting screw* located on the face of the instrument housing enables the installer to change the numerals along the reading line, independent of the actuating shaft rotation. This feature provides a means of zeroing the unit at installation.

* The zero adjust feature is not available on a digital indicator with oversized bore.

The digital indicators can be mounted on a vertical, horizontal, or angled actuating shaft. Four reading lines (see below) are offered to allow positioning the instrument at eye level, below eye level, or above eye level.

Models

Choose from four models, each having a different reading line.

Model 250A	Model 250B	Model 250C	Model 250D

Readout Selection Chart

Reading after one revolution from 00000*					MAX RPM
.00010	0.0010	00.010	000.10	0001.0	200
.00020	0.0020	00.020	000.20	0002.0	200
.00025	0.0025	00.025	000.25	0002.5	200
.00040	0.0040	00.040	000.40	0004.0	200
.00050	0.0050	00.050	000.50	0005.0	200
.00100	0.0100	00.100	001.00	0010.0	100
.00125	0.0125	00.125	001.25	0012.5	100

* Other readouts available as options.

Construction

Zinc-Aluminum ZA-12 alloy cast housing and base plate frame.

Hobbed brass gears to insure a positive, long lasting drive train

All gears and bearings Molydisulfide lubricated

LEXAN reading lens.

Aluminum bezel

Reading lens physically secured in housing recess

Housing, base mounting, and shaft sealed to prevent most normal contamination from entering unit

Optional Features

Handwheels

Custom grahpics on handwheel face and metal bezel face

Mounting holes in back plate

Bores smaller than .500 (12.7) and larger than .75 (19.1), up to 1.062 (27.0)

Readouts showing english/metric

Specifications

Weight: 1.9lbs (.9Kg)

Maximum Operating Temperature: 140 degrees F (60 degrees C)

Number Wheels: 5 with 1/4" (6.4mm) high numerals

Installation Sequence

1. Customer determines mounting (refer to Physical Dimensions to location non rotation holes.)
2. Adjust unit to zero by rotating input shaft
3. Slide instrument onto actuating shaft. Locate anti-rotation pin in non-rotation hole in mounting surface.
4. Lock instrument to actuating shaft by securing set screw in input shaft.
5. Use zero adjust screw to set desired initial reading.

Special Handwheel Option

As an option, Mission Industries will provide a custom handwheel for the digital handwheel for the digital position indicator. Specify that preference when ordering. Handwheels mount to the customer's shaft.

Mission Industries can add your company logo or function graphics to the face of the handwheel.


Mission Industries, Inc.