Broader Alignment Tolerances,
Increased Standoff Clearance, Smallest Sensor and More
Why Mercury Encoders Make It Easier To Design High Performance Into Your Equipment
Eliminate the Frustration of Touchy
Encoder Alignment
Theta Z Alignment Tolerance
Mercury Solves this Problem for Good
ꢁ.ꢂ2
ꢀ2
ꢁ.ꢁꢁ02
Fussy alignment is no longer a concern. With Mercury’s
™
™
patented PurePrecision optics, advanced SmartPrecision
electronics and LED alignment indicators, you can push the
sensor against your reference surface, tighten the screws and
you’re finished. Try that with brand X or Y.
Mercury
Brand Y
Brand X
This performance is possible thanks to relaxed alignment
tolerances, particularly in the theta Z axis. Mercury offers a
2ꢀ sweet spotꢁ that’s a 300% improvement over the best
competitive encoder. And that will result in dramatic savings
in manufacturing costs.
No other commercially available encoder is easier to align,
easier to use, or easier to integrate into your designs.
Alignment Tolerance Comparison**
Mercury*
Brand X
0.1mm
Brand Y
0.1mm
Mercury vs. Best Competitor
Mercury is 50% better
Z Standoff
Y
0.15mm
0.20mm for linear
0.10mm for rotary 1ꢂmm dia.
0.1mm
unspecified
Mercury is 100% better
>
_
theta X
theta Y
theta Z
1.0ꢀ
2.0ꢀ
2.0ꢀ
unspecified
0.1ꢀ
1.0ꢀ
1.0ꢀ
0.5ꢀ
Mercury is 100% better
Mercury is 300% better
0.006ꢀ
*Measured at a constant temperature for one axis at a time with all other axes at their ideal positions.
**Based on published specifications
Mercury Can Reduce System Size and Cost
Mercury’s sensor height is 44% shorter than competitive encoders,
making it easy to fit into your design. This reduction can also cut total
system weight and cost by allowing the use of smaller motors and
stages. Safe system operation is also enhanced thanks to Mercury’s
generous standoff clearanceꢁ 200% greater than other encoders.
And it’s standoff tolerance is 50% greater than the best alternative.
This significantly relaxes mechanical system tolerances,
while reducing system costs.
Standoff Clearance
Mercury
ꢀ.4mm*
ꢁ.ꢃꢂmm
Brand Y
Brand X
ꢁ.8mm
ꢁ.ꢃmm
Mechanical Dimension Comparison**
Mercury Brand X Brand Y Mercury vs.
Best Competitor
Sensor Z height
8.4mm 23mm 15mm
44% better
Standoff clearance 2.4mm 0.5mm 0.8mm 200% better
Standoff tolerance
System height
0.15mm 0.1mm 0.1mm 50% better
11.7mm 28.5mm 15.8mm 26% better
ꢁ.ꢂmm
ꢁ.ꢃmm
**Based on published specifications
Note: Mercury 1500P is even smaller at 5.6mm sensor height
* Dimensions shown illustrate encoder system standoff clearance; see Mercury
Encoder Interface Drawings for correct design reference surfaces.
Page 2 of 5
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