D01399001A
Z
Strain gauge load cell Instructions for Use
TU-MXR2(T)-G3
Tension/Compression Load Cell
Introduction
Thank you for purchasing the TU-MXR2(T)-G3 load cell.
Please read this document completely before using this
load cell to achieve its best performance and ensure safe
and proper operation.
o
Company names and product names in this document are the
trademarks or registered trademarks of their respective owners.
Included accessories
If anything is missing or damaged, contact the retailer
where you purchased the product.
Test report × 1
Jig for tightening × 1
Instructions for Use (this document) × 1
IMPORTANT SAFETY INSTRUCTIONS
V
WARNING
If something abnormal occurs
Request repair from the retailer where you purchased
the product.
Do not open the cover.
Never remove the cover from this unit. Doing so could
cause malfunction. Request inspection and repair from the
retailer where you purchased the product. Do not alter this
unit. Doing so could cause malfunction.
Do not put foreign objects or water, for example,
into the unit.
Do not place a container that holds water, for example, on
top of this unit. If liquid is spilled, for example, and enters
the unit, this could cause malfunction.
Do not use the unit with any power supply voltage
other than that specified.
Do not use the unit with any power supply voltage other
than that specified. Doing so could cause malfunction.
V
CAUTION
Unsuitable installation locations
Do not place the unit in the following types of locations.
Doing so could cause malfunction.
o
Locations where it might be exposed to smoke or steam,
such as near a kitchen table or humidifier
o
Unstable locations, including unsteady stands and
tilted places
o
Locations that are very humid or dusty
o
Locations that are exposed to direct sunlight
When not using the unit for a long time
For safety, cut the power supply when not using this unit
for a long time.
Do not operate a damaged unit.
Precautions for use
o
This unit is not built to be water or splash resistant,
and it cannot be used in conditions when the relative
humidity is high. Moreover, use in atmospheres with
corrosive gases should be avoided.
o
Be careful to prevent water, oil and other substances
from getting on the unit.
o
Avoid use in conditions where condensation could occur.
o
Connect cores to the load cell after discharging (elim-
inating) static electricity from your body.
o
If the surrounding temperature changes suddenly, the
values output by this device could become unstable,
making accurate measurement impossible.
(This could occur, for example, in a location blown by
warm or cold air.)
o
Conduct load calibrations periodically.
Installation procedures
Insert a screw into the screw hole in the center part of the
load cell, and fix the screw to a flat attachment surface.
(Output precision could be affected if the attachment
surface is not flat.) The size of the screws used depends on
the rated capacity (model name) of the load cell as shown
in “Recommended tightening torques when attaching to
load jigs and surfaces” below.
Recommended tightening torques when attaching
to load jigs and surfaces
Rated
capacity
Dimension
of load
cell screw
hole
Effective
screw
depth
Body
material
Tightening
torque
tolerance
10 N
M3
3.5 mm
Aluminum
0.3 N·m
20 N
0.7 N·m
50 N
1.1 N·m
100 N
1.5 N·m
200 N
Steel
6.0 N·m
500 N
M4
4.5 mm
6.0 N·m
Use screws with a strength grade of 12.9.
In addition, see the “Effective screw depth” in the dimensional
drawing for the length of thread engagement of the screw
and the mounting part (internal threads).
Please consult with us if you are uncertain about screw
selection, for example.
ATTENTION
o
When attaching a load button or rod end, for example,
to the screw/bolt area on the top of the load cell, use
the included jig to hold the area shown with diagonal
lines at the top and tighten the screw or nut.
Jig for tightening
Wrench
(commercially-available)
o
In the same way, when attaching a rod end or base,
for example, to the screw/bolt area on the bottom
of the load cell, use the included jig to hold the area
shown with diagonal lines at the bottom and tighten
the screw or nut.
Jig for tightening
Wrench
(commercially-
available)
o
When tightening the screw or nut attached to the load
cell, holding the screw/bolt part on the opposite end
(shown with diagonal lines), will cause twisting force
to be applied to the gauge and break the load cell.
Jig for tightening
Wrench
(commercially-available)
o
When removing it, follow the attachment procedures
in reverse order. On the top or the bottom side of the
load cell that has 14mm width across flats, the side that
has the nut, for example, to be loosened, use the jig
for tightening to remove it so that force is not applied
to the load cell.
o
Attach a load button, for example, when using with
compression.
Tighten with the torque shown in the table above
to prevent the load button from becoming loose.
When removing an attached load button, be sure not
to apply torque that exceeds the tightening torque
shown in the table.
A thread-locking fluid can be used on the screw, but
be aware that this could prevent removal of the load
button. Please prepare a load button to attach or
consult with us.
o
When using with a tensile load, attach a rod end or
tensile load adapter.
o
When attaching a rod end to a load cell, use a nut to
prevent loosening. When tightening this nut for pre-
venting loosening, secure the rod end. Do not tighten
the nut by securing the load cell. If twisting force is
applied between it and the central screw part, the load
cell could be damaged.
Hold the rod
end in place
Nut
Do not hold
the load cell
in place.
o
Always use screws/bolts that are suitable for the rated
capacity when attaching a base plate or tensile load
adapter, for example, to the load cell. Moreover, tighten
all of the attachment screws/bolts evenly.