MicroE Systems

PurePrecision TM Tape and Glass Scales For
TM
Mercury II Encoders
Mercury II
For Easy Installation and
Superior Performance
Tape Scales
PurePrecision tape is the easiest tape scale to install and
use. Cut it to any length you need from a coil, or order pre-cut
lengths with built-in index and limits to make installation even
faster. Its adhesive backing makes application easy and accurate.
• Cut to any length at the time of installation, or order pre-cut
• Measuring length up to 30m
• Only 6mm wide, including index and limits; low profile
• Choose from built-in or stick-on optical index and limit markers
• Resists effects of scale contamination – dust, dirt, fingerprints, oil spots, etc.
Glass Scales
Use linear glass scales for the highest accuracy and precise thermal
management. Rotary glass scales are available with or without hubs,
and in arc segments.
• Highest accuracy – up to ±1µm
• Only 6mm wide, including index and limits (applications ≤130mm)
• Custom options – special widths, thicknesses, near-zero CTE materials,
diameters, or rotary arc segments
Note: Contact MicroE Systems for tape-on-a-radius rotary and MII 1900/1600 rotary applications
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SPECIFICATIONS FOR MERCURY II SCALES
SCALES & INDEX / LIMIT MARKERS FOR MERCURY II MODELS
Model Tape Linear Glass Rotary Stick-On Stick-On
Scale Scales Scales Index Limits
MII 6000 • • • • •
MII 5000 • • • • •
MII 1900 • • •
MII 1600 • •
Linear Tape Linear Glass Rotary Glass
Scales Scales Scales
Length 50mm - 30m 18mm - 1m 44mm - 121mm dia.
Cut to any length
•
from a dispenser
Order pre-cut to a • •
a specified length
Accuracy ≤ ±5µm* up to ±1µm up to ±2.1 arc-sec.
CTE 13ppm/°C** 8ppm/°C 8ppm/°C
Built-in index and limits • • •
Stick-on index and limits • •
* Over any one meter of travel after slope correction in the customer’s controller
** Thermal expansion of the tape scale is matched to the substrate by fixing the ends
of the scale with epoxy
Mercury II Accuracy:
±1µm with High-Accuracy Grade Scales