Foreword
To obtain the highest performance and the longest service life from your
Linear Gage, carefully read this manual thoroughly prior to setup and
operation. After reading this manual keep it near the Linear Gage for quick
reference. The specifications of this gage and the description in this
manual are subject to change without prior notification.
Safety Precautions
To ensure operator safety, use the instrument in conformance with the
directions and specifications given in this User’s Manual.
Precautions for Use
Carefully avoid the following attempts to protect the instrument from failure
and malfunction.
IMPORTANT
Do not apply sudden shocks including a drop or excessive force to the
linear gage.
Do not disassemble or modify the gage.
Do not use and store the gage at sites where it is exposed to direct
sunlight or at extremely hot or cold sites.
To use the gage highly accurately, avoid sites where the temperature
will change abruptly.
Absolutely do not apply an electric engraver to the gage. The high
voltage may damage electronic parts. Also, do not use the gage at sites
where it is subject to large electronic noises.
Do not exert load on the spindle in the perpendicular direction and do
not twist the spindle.
Do not clamp the stem too tightly, since the spindle will not move
smoothly.
Do not apply excessive tension to the cable or do not bend it forcibly.
To perform stable measurement, allow at least 10 minutes after turning
on the power.
Do not set up the origin point at either end of the stroke.
If the gage is used in combination with other instruments, the maximum
performance could not be obtained depending on environmental and
operating conditions. Take those conditions into consideration prior to
use.
The functions and performance will not be guaranteed, if the gage is
used in other conditions than those specified.
Take sufficient damage-preventive processing (safety measures),
should this gage have been at fault.
Caution
Please be careful enough when handling the knife edge or blade
type contact point, since there is a possibility of injury at exchange
and use.
Electromagnetic Compatibility (EMC)
This product complies with the EMC Directive. Note that in environments
where electromagnetic interference exceeds EMC requirements defined in
this directive, appropriate countermeasures are required to assure the
product performance.
1. Name and Dimension of Each Part
2. Mounting the Gage
(1)To mount the gage on another instrument or a fixture, clamp the
φ
8 stem.
(2)It is recommended to use a slotted holder or a split bushing for the mount
structure.
（
Recommended tightening torque in Example 1
：
4.0 to 5.0kgf
･
cm
）
IMPORTANT
Absolutely avoid pressing the stem directly
with set screws. (The built-in bearing may
be damaged.)
Mount the gage so that the spindle is
directed perpendicular to the measured
surface. If the gage is mounted at an angle
to the measured surface, an error may be
generated in measurement results.
3. Precautions in Protecting the Gage from Dust and Water
IMPORTANT
The output connector plug (counter side) is not protective structured. Install
the gage at a place where it is not splashed directly with water or oil.
If the cable covering is broken, liquid will penetrate into the gage inside
due to capillary phenomenon. This will cause damage to the gage.
Immediately repair the cable.
Be greatly careful not to damage the rubber boot due to chips, etc. If
the rubber boot is damaged, dust-proof and water-proof function will be
deteriorated. Immediately replace or repair the rubber boot.
The materials including rubber which are used for the rubber boot and
other sealing parts are not universal against diversified coolants and
chemicals. If those parts deteriorate unusually, consult the nearest
Mitutoyo Service Center.
Each part of the gage is sealed up, and therefore must not be
disassembled. If any part is disassembled, the rated performance will
not be obtained. Do not absolutely disassemble the gage.
4. Specifications of Gage Output Signals
１）
Output connector
：
RM12BPE-6PH (Hirose)
２）
Pin assignment
３）
Output signal level
φＡ、φＡ、φＢ、φＢ（
TTL line driver AM26LS31 or equivalent
）
４）
Input connector and recommended input circuit
Suitable connector
：
RM12BRD-6S (Hirose)
①
Stem
②
Rubber boot
③
Spindle
④
Contact point
⑤
Signal cable
⑥
Output connector
unit：mm
Ｍ９．５×０．５
３０
φ
８
０
－０．００９
８
２
．
７
Thrust stem
mounting screw
Ring of discriminating
a model
Cable length ２ｍ
φ
１２
１
０
．
６
o
r
m
or
e（
st
ro
ke
）
３
１
．
９
⑤
RM12BPE-6PH
（Hirose）
①
②
③
⑥
④
１４
6.
5
７
３
．
１
１
２
５
．
５
cross section
cross section
②
①
①
Notch position
（９０°with respect to tap）
φ
８
unit：ｍｍ
Ｍ４×０.７ thru
・Example 2.
・Example 1.
Ｍ４×０.７ thru
４.５ drill, ７.５ countersink,
４.４ deep
１０
２０
７.５
＋０.０２０
＋０.００５
７.５
１５
６
６
１５
１５
１
１６
φ
１０
７.５
１５
＋０.０２０
＋０.００５
②Split bushing
１
１５
φ
８
＋０.０２０
＋０.００５
φ
１０
０
－０.０１５
Error=Ｌ０-Ｌ１
θ
※
：
Power supply to the gage head
Power voltage:5V(4.8V to 5.2V)
Ripple voltage:200mVp-p or less
Current consumption:120mA max.
Linear Gage LGK series
Ｎｏ．９９ＭＢＣ０８１Ｂ②
ＳｅｒｉｅｓＮｏ．５４２
Pin No. Signal name
１
＋５Ｖ
２
φＡ
３
φＢ
４
φＡ
５
ＧＮＤ
６
φＢ
※
１
２
３
４
６
５
φ
Ａ，
φ
Ｂ
φ
Ａ，
φ
Ｂ
Recommended input circuit
ＬＧＫ output circuit
２６ＬＳ３２ or equivalent
３３ｐＦ
５１
Ω
ＧＮＤ
＋５Ｖ
ＧＮＤ
＋５Ｖ
