MicroE Mercury II 6000 - Manual (Page 51)

PurePrecision Laser Tape II Scale Installation
IM-Mercury_II_PurePrecision_Scales Rev. 1 Page 7 ©2014 MicroE Systems
Mercury II PurePrecision Tape and Glass Scales
Installation Manual and Reference Guide

In #3 above, the outside reference surface of the applicator tool slides against the temporary edge
and the tape scale is offset from the edge as shown (4.18±0.05mm). If this offset is too small for the
application, create a spacer than can attach to the outside of the tool.

To ensure successful tape installation: verify all tolerances listed for your installation, and verify the
dimensions of the scale benching edge (permanent or temporary).

Calculate the length of the PurePrecision Tape Scale required for your application using the
following formula:
ML + 40 mm = Length of Tape Scale
ML - Measuring Length (refer to the encoder interface drawings)
3.1.5 Mounting Surface Preparation
Perform the following steps prior to tape scale installation.
Step Action
1. Inspect the mounting surface for any machining irregularities. MicroE Systems recommends a
surface finish of better than 3.2 micrometers Ra.
2. The straight edge (permanent or temporary) must be sharp on the benching side in order for
the applicator tool to use it as a guide. In order for the tape scale to be mounted close to the
straight edge, use a maximum radius of 0.13 mm (0.005 inches) where the edge meets the
bottom of the mounting surface.
3. Thoroughly clean the scale mounting surface and reference edge using a cotton swab or lint-
free cloth dampened with isopropyl alcohol or acetone. Remove all dust and particles.
4. Mark the starting location on the mounting surface where the tape scale will be applied (the left
edge of where the scale will be applied when the scale reference edge is away from you). Also
mark the locations where the index and limit markers will be applied. Refer to the encoder
interface drawings to identify the reference points of the markers.