Read this User's Manual thoroughly before operating
the instrument. After reading, retain it close at hand for
future reference.
No. 99MAF029B2
Date of publication: February 1, 2017
Applicable product names and model numbers
QMH-600A
z
518-232
QMH-600B
z
518-236
QMH-350A
z
518-230
QMH-350B
z
518-234
QMH-24"A
z
518-233
QMH-24"B
z
518-237
QMH-14"A
z
518-231
QMH-14"B
z
518-235
Notice Regarding This Guide
yMitutoyo Corporation assumes no responsibilities for any damage to the instrument, caused by its
use not conforming to the procedure described in this User's Manual.
yUpon loan or transfer of this instrument, be sure to attach this User's Manual to the instrument.
yIn the event of loss or damage to this manual, immediately contact a Mitutoyo sales office or your
dealer.
yBefore operation of the instrument, thoroughly read this manual to comprehend its contents.
yParticularly, for full understanding of information, carefully read "Safety Precautions" and
"Precautions for Use" at the outset of this manual before using the instrument.
yThe contents in this manual are based on the information current as of February, 2017.
yNo part or whole of this manual may be transmitted or reproduced by any means without prior
written permission of Mitutoyo Corporation.
ySome screen displays in this manual may be highlighted, simplified or partially omitted for
convenience of explanation. In addition, some of them may differ from actual ones to the extent that
no user will misunderstand the functions and operations.
yThe corporation, organization and product names that appear in this manual are their trademarks
Conventions used in this User's Manual are roughly divided into two types (safety reminders and
mandatory actions). Moreover, these safety symbols include general warnings and specific warnings.
Specific warning symbols are provided with concrete pictograms inside of them.
Safety reminder conventions and wording warning against potential hazards
Indicates an immediately hazardous situation which, if not avoided, will result
in serious injury or death.
Indicates a potentially hazardous situation which, if not avoided, could result in
serious injury or death.
Indicates a potentially hazardous situation which, if not avoided, may result in
minor injury.
General
DANGER
WARNING
CAUTION
NOTE
Specific
Conventions and wording indicating mandatory actions
General
Mandator y
Specific
Conventions and wording indicating referential information or referential
Indicates a potentially hazardous situation which, if not avoided, may result in
property damage.
Alerts the user to a specific hazardous situation that means "Caution, risk of
electric shock".
Indicates concrete information about mandatory actions.
Indicates that grounding needs to be implemented.
locations
Tips
Indicates referential information such as that for when the operating methods and procedures which
are printed in these sentences are to be applied to specific conditions.
Indicates referential locations if there is information that should be referred to in this guide or an
extraneous manual.
E.g.: For details,
"2.1 Measuring the Height" (page 17)
i
No. 99MAF029B
Safety Precautions
Read these Safety Precautions thoroughly before operating the system to use it properly.
These safety precautions include such information as to prevent an injury to the operator and other
persons or damage to property. Be sure to observe the precautions.
• Do not disassemble or modify this product. Doing so can result in fire or electric shock.
• Do not place the product on an unstable surface. It may fall or topple over, causing an injury.
WARNING
CAUTION
• Do not place containers with water, such as flower pots, near this product. If water gets into the
device, a fire or electric shock may occur. If water does get into the device, turn off the power, and
contact us. Continuing to use the device may result in a fire or electric shock.
• Do not use the device in areas where volatile gases may be released. Doing so can result in a fire.
• Do not apply an external voltage to the product with a device such as an electric engraver. Doing so
may lead to damage or malfunction.
• If the device will not be used for an extended period of time, remove the batteries. Battery leakage
can damage the device.
• Only use LR6 (AA alkaline) or Ni-MH (nickel metal hydride) batteries. Handle the batteries
according to their instructions.
• Do not charge or disassemble the accompanying batteries. They may short circuit.
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No. 99MAF029B
Precautions for Use
Product applications and handling
This product is a measuring instrument.
z
Do not use it for any purposes other than measuring.
This product is precision equipment.
z
It must be carefully handled. Be careful not to apply excessive shock or force to any of the parts during
operation.
Installation environment
Only use this product in the following environments.
yAreas free of dirt and dust
yAreas free of vibrations
yAreas with an ambient temperature between 0 C and 40 C (For precision measurements, the
temperature should be consistently around 20 C.)
yAreas with low humidity
yOn a surface plate
Avoid using the product in the following environments.
yIn locations where it may directly exposed to cutting fluids, water, etc.
yIn locations where it may be exposed directly to sunlight or hot or cold wind
yIn locations near machines that generate electromagnetic noise, such as welders or electrical
discharge machines
Maintenance
yClean the main unit, base, or probe by wiping it with a lint-free cloth or paper towel dampened with
a neutral detergent. Do not use an organic solvent such as a thinner.
yIn order to prevent dirt and dust accumulation, we recommend covering the main unit with the
included product cover.
Power Supply
yTurn off the power after use.
yDo not connect the AC adapter (optional accessory) to a high-current power supply used by
machine tools or large CNC measuring instrument.
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No. 99MAF029B
Electromagnetic Compatibility (EMC)
This product complies with the EMC Directive. Note that, in environments where electromagnetic
interference exceeds the EMC requirements defined in this directive, appropriate countermeasures are
required to ensure product performance.
This is an industrial product. Not intended for use in a residential environment. Use of this product in a
residential environment may cause an electromagnetic interference with other instruments. In such a
case, appropriate measures against electromagnetic interference are required.
Export Control Compliance
This product falls into the Catch-All-Controlled Goods and/or Catch-All-Controlled Technologies
(including Programs) under Category 16 of Appended Table 1 of the Export Trade Control Order or
under Category 16 of the Appended Table of Foreign Exchange Control Order, based on the Foreign
Exchange and Foreign Trade Act of Japan.
If you intend re-export of the product from a country other than Japan, re-sale of the product in a
country other than Japan, or re-provision of the technology (including program), you are obligated to
observe the regulations of your country.
Also, if an option is added or modified to add a function to this product, this product may fall under the
category of List-Control Goods and/or List-Control Technology (including Programs) under Category 1
- 15 of Appended Table 1 of the Export Trade Control Order or under Category 1 - 15 of the Appended
Table of Foreign Exchange Control Order, based on Foreign Exchange and Foreign Trade Act of
Japan. In that case, if you intend re-export of the product from a country other than Japan, re-sale of
the product in a country other than Japan, or re-provision of the technology (including program), you
are obligated to observe the regulations of your country. Please contact Mitutoyo in advance.
Notes on Export to EU Member Countries
When you intend export of this product to any of the EU member countries, you may be required
to provide User's Manual(s) in English and EU Declaration of Conformity in English (under certain
circumstances, User's Manual(s) in the destination country's official language and EU Declaration
of Conformity in the destination country's official language). For detailed information, please contact
Mitutoyo in advance.
Disposal of Old Electrical & Electronic Equipment
(Applicable in the European Union and other European
countries with separate collection systems)
This symbol on the product or on its packaging is based on the WEEE Directive (Directive on
Waste Electrical and Electronic Equipment), which is a regulation in EU member countries, and
indicates that this product shall not be treated as household waste.
To reduce environmental impact and minimize the volume of landfill, please cooperate in reuse
and recycling.
For information on how to dispose of the product, please contact your dealer or the nearest
Mitutoyo sales office.
iv
No. 99MAF029B
China RoHS Compliance Information
This product meets China RoHS requirements. See the table below.
In the event that this product should prove defective in workmanship or material, within one year from
the date of original purchase for use, it will be repaired or replaced free of charge. Please contact your
dealer or the nearest Mitutoyo sales office.
If this product fails or is damaged for any of the following reasons, it will be subject to a repair charge
even if it is still under warranty.
yFailure or damage owing to fair wear and tear.
yFailure or damage owing to inappropriate handling, maintenance, or repair, or to unauthorized
modification.
yFailure or damage owing to transport, dropping, or relocation of the product after purchase.
yFailure or damage owing to fire, salt, gas, abnormal voltage, lightning surge, or natural disaster.
yFailure or damage owing to use in combination with hardware or software other than that
designated or permitted by Mitutoyo.
yFailure or damage owing to use in ultra-hazardous activities.
This warranty is effective only where the instrument is properly installed and operated in conformance
with the instructions in this manual within the original country of the installation.
EXCEPT AS SPECIFIED IN THIS WARRANTY, ALL EXPRESS OR IMPLIED CONDITIONS,
REPRESENTATIONS, AND WARRANTIES OF ANY NATURE WHATSOEVER INCLUDING,
WITHOUT LIMITATION, ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, NONINFRINGEMENT OR WARRANTY ARISING FROM A COURSE OF
DEALING, USAGE, OR TRADE PRACTICE, ARE HEREBY EXCLUDED TO THE MAXIMUM EXTENT
ALLOWED BY APPLICABLE LAW.
You assume all responsibility for all results arising out of the selection of this product to achieve its
intended results.
Disclaimer
IN NO EVENT WILL MITUTOYO, ITS AFFILIATED AND RELATED COMPANIES AND SUPPLIERS
BE LIABLE FOR ANY LOST REVENUE, PROFIT, OR DATA, OR FOR SPECIAL, DIRECT,
INDIRECT, CONSEQUENTIAL, INCIDENTAL, OR PUNITIVE DAMAGES HOWEVER CAUSED AND
REGARDLESS OF THE THEORY OF LIABILITY ARISING OUT OF THE USE OF OR INABILITY TO
USE THIS PRODUCT EVEN IF MITUTOYO OR ITS AFFILIATED AND RELATED COMPANIES AND/
OR SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
If, notwithstanding the foregoing, Mitutoyo is found to be liable to you for any damage or loss which
arises out of or is in any way connected with use of this product by you, in no event shall Mitutoyo's
and/or its affiliated and related companies' and suppliers' liability to you, whether in contract, tort
(including negligence), or otherwise, exceed the price paid by you for the product only.
BECAUSE SOME COUNTRIES, STATES OR JURISDICTIONS DO NOT ALLOW THE EXCLUSION
OR THE LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, IN SUCH
COUNTRIES, STATES OR JURISDICTIONS, MITUTOYO'S LIABILITY SHALL BE LIMITED TO THE
EXTENT PERMITTED BY LAW.
vi
No. 99MAF029B
About This Document
Positioning of This Document in Document Map
This document explains how to use the product and provides troubleshooting information.
In addition to this document, a setup guide and a quick reference chart are available.
Operation
z
User's Manual (This Document)
Setup
z
Setup Manual
Quick reference chart
z
Quick Reference Manual
Intended Readers and Purpose of This Document
Intended Readers
z
This document is intended for beginners of the High-Precision Digital Height Gauge.
The readers are assumed to have been familiar with basic operations of a PC and Windows.
They are also assumed to be able to understand individual instructions by reading screen displays.
Purpose
z
To use this product safely and correctly, read this document thoroughly. After reading, keep it in a safe
place close to the product.
This document is aimed at understanding how to use the High-Precision Digital Height Gauge to
perform basic measurements and specific usage applications.
vii
No. 99MAF029B
Contents
CONVENTIONS USED IN THIS MANUAL …………………………………………………i
Safety Precautions …………………………………………………………………………… ii
Precautions for Use …………………………………………………………………………… iii
Electromagnetic Compatibility (EMC) …………………………………………………… iv
Export Control Compliance ………………………………………………………………… iv
Notes on Export to EU Member Countries ……………………………………………… iv
Disposal of Old Electrical & Electronic Equipment (Applicable in the European
Union and other European countries with separate collection systems) ………… iv
China RoHS Compliance Information ……………………………………………………… v
Warranty ………………………………………………………………………………………… vi
Disclaimer ……………………………………………………………………………………… vi
About This Document …………………………………………………………………………vii
1 Before Using This Product …………………………………………………………… 1
This chapter explains the product's characteristics, part names and functions, basic operations, and
the settings that must be configured prior to measurement.
1.1
This product is a measuring instrument that makes measurements by vertically moving a part called
a probe into contact with a specific point, and calculating the height of that point. Because the
measurements are obtained from the probe's position, this product can measure the inner diameter of
holes and the outer diameter of cylinders as well.
Before Using This Product
Product Capabilities
(2)
(1)
Measurement
point
Bring the probe into contact with the point you want to measure (1), and read the displayed measurement (2).
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No. 99MAF029B
1 Before Using This Product
1.2
Part Names and Functions
1.2.1 Main Unit
A
C
DE
PB
O
N
M
L
F
H
I
G
J
K
2
No. 99MAF029B
1 Before Using This Product
A Head coverB Display unit
C Micro USB connector (AB receptacle)
D Digimatic output connector*1
*1
This port is for connecting your PC with a
micro USB cable.
E DC jack
FBattery case
*1
This jack is for connecting the optional AC
adapter.
Displays measurements and any messages.
This port is for connecting the optional
Digimatic mini-processor (DP-1VR, etc.).
A case for inserting the batteries.
G Air-float switch (QMH-600B/QMH-350B/
QMH-24"B/QMH-14"B only)
This switch uses the air-float function to
make the main unit float.
NOTE
Measuring with the air-float function
active can cause measurement errors.
IProbe fine adjustment knob
Pulling the knob and turning it moves the
probe slowly.
K Float amount adjustment screw (QMH-600B/
QMH-350B/QMH-24"B/QMH-14"B only)
Adjusts the amount of airflow used in the
air-float function. Turning the screw right
increases airflow, and turning it left reduces
airflow.
M Carrier grip
Hold the carrier grip when moving the main
unit along the surface plate.
O Probe
Used for obtaining measurements. Touch
the sphere on the tip of the probe to the
workpiece to obtain the measurements.
H Probe up/down wheel
The probe moves up and down as the wheel
is turned left and right.
JClamp screw
Fixes the rotational movement of the probe
up/down wheel.
LBase
Contact surface used when installing the
main unit on the surface plate. Grip the base
when moving the main unit along the surface
plate.
N Probe clamp knob
Clamps the probe so that it does not come
out.
P Clamp knob
Fixes the movement of the probe.
*1
During use, we recommend securing the cable with the included cable clamp.
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No. 99MAF029B
1 Before Using This Product
1.2.2 Display Unit
Operation panel
A
CDEF
L
B
G
H
I
K
4
J
No. 99MAF029B
1 Before Using This Product
A Shows the result of the tolerance judgment.
Tips
C Measures the inner diameter.
Tips
E Measures the maximum, minimum, and
displacement values (maximum – minimum =
displacement) of a horizontal plane.
Tips
G Changes the setting for units between inches
and millimeters (only on models that support
inches).
For details, "3.2 Judging the
Tolerance" (page 38)
For details, "2.3 Measuring the
Inner Diameter" (page 21)
For details, "2.5 Measuring the
Plane Displacement (Plane Scanning
Measurement)" (page 29)
B Turns the power on or off.
D Measures the outer diameter.
Tips
FChanges the origin between ABS and INC
settings.
H Sets a value for the origin.
For details, "2.4 Measuring the
Outer Diameter" (page 25)
I
Changes numbers and settings. Press
to confirm an operation.
Tips
K Used to change settings for a specific
application, such as changing the
measurement resolution.
Tips
• Press and hold to reverse
the counting direction: Moving
the probe upwards decreases
the value, and moving the probe
downwards increases the value.
Press and hold the button again to
return to normal.
• If you reversed the counting
direction, follow the procedure in
"1.4.1 Origin Setup" (page
10) to reset the origin.
For details, "3 Specific Usage
Applications" (page 31)
JCancels an operation.
LHolds a measurement in the display and
outputs the measurement results to external
devices.
Tips
For details, "3.5 Holding the
Displayed Measurement Results"
(page 44) and "3.9 Outputting
Measurement Results to an External
Device" (page 47)
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No. 99MAF029B
1 Before Using This Product
LCD screen
J
I
ABCD
E
F
G
H
A Displays an icon which represents an
operation.
C Displayed when registering measurement
steps or executing steps that have been
registered.
Tips
E Displayed during the following operations.
y[H]
When a measurement is being held in the
display.
y[ABS]/[INC]
When the origin has been changed
between ABS and INC settings.
y[PRESET]
When setting a value for the origin.
For details, "3.3 Simplifying
Measurement Procedures" (page 40)
B Shows the result of the tolerance judgment.
Tips
D Displayed when the battery is empty.
FThe meanings of the following letters,
which are displayed during measuring, are
explained below.
y[ZP]
The difference between 2 measurements
y[U]/[L]
Upper/Lower tolerances
y[ZD]
Diameter
y[ZL]/[ZS]/[W]
Maximum/Minimum/Displacement
y[mm]
Millimeters (unit)
y[in]
Inches (unit)
For details, "3.2 Judging the
Tolerance" (page 38)
G Displays the difference with the previous
measurement.
Tips
IShows which keys can be used during an
operation.
For details, "3.1 Calculating the
Difference Between 2 Measurements"
(page 31)
H Displays the available settings when is
pressed.
Tips
JDisplays the measurement.
Tips
For details, "3 Specific Usage
Applications" (page 31)
For details, "2 Basic Measuring
Methods" (page 17)
6
No. 99MAF029B
1 Before Using This Product
1.3
This section explains how to turn on the power, as well as how to move the probe and the main unit.
Basic Operations
1.3.1 Turning On the Power
Press on the upper right of the LCD screen to turn on the power.
1.3.2 Moving the Probe
Turn the probe up/down wheel right and left to move the probe up and down, respectively. When
bringing the probe into contact with the workpiece or surface plate, be sure to move the probe slowly.
The probe can be moved slowly by pulling out and turning the probe fine adjustment knob.
"Quick Movement (Coarse adjustment)""Slow Movement (Fine adjustment)"
2
1
When the probe contacts the measurement surface with a consistent force, a beep sound is made, and
the height position is measured.
NOTE
• In order to prevent a reduction in the product's performance, do not move the probe by grabbing it.
• If the display value remains held even when you move the probe vertically, press
not release the hold, follow the steps in "When the displayed value is held, and the workpiece
cannot be measured" (page 52) to release the hold.
. If this does
7
No. 99MAF029B
1 Before Using This Product
1.3.3 Moving the Main Unit
When moving the main unit on the surface plate, grab the base with your right hand and the carrier
grip with your left hand.
For QMH-600B/QMH-350B/QMH-24"B/QMH-14"B, pressing the air-float switch on the tip of the carrier
grip causes air to make the main unit float, allowing you to move it smoothly above the surface plate.
NOTE
NOTE
Do not move the product by grabbing parts other than the base or carrier grip. Doing so can negatively
affect measurement accuracy and the product itself.
If using the air-float function:
• Measuring with the air-float function active can cause measurement errors.
• Clean the surface plate in advance.
• Use a surface plate of Class JIS1 or higher. If the surface plate is scratched or uneven, the specified
performance may not be achieved.
• Use a rigid surface plate. If the surface plate warps under the weight of the product, the product
may not float.
8
No. 99MAF029B
1 Before Using This Product
NOTE
If air-float does not work:
• If
with new ones.
• Use a flathead screwdriver to turn the air-float adjustment screw, and adjust the airflow. Turning the
screw right increases airflow, and turning it left reduces airflow. Adjust the amount relative to the
installation location.
is shown on the LCD screen, the air-float function cannot be used. Replace the batteries
Air-float
adjustment screw
NOTE
The airflow has been adjusted to provide optimal performance before shipment. We recommend
using the default settings as much as possible.
When adjusting the air-float flow:
• Due to the characteristics of the air-float mechanism, variations in airflow may cause the main unit
to vibrate. In this case, reduce the airflow.
• If you adjust the airflow, make sure that the friction between the surface plate and the main unit is
reduced before use.
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No. 99MAF029B
1 Before Using This Product
1.4
Complete the following setup before measuring.
yOrigin setup
yProbe diameter setup
Preparing Measurements
1.4.1 Origin Setup
Set the origin to use when measuring height. The dimensions measured from this origin will become
the height measurements. This product is compatible with both ABS and INC origins. Use one or the
other based on the application.
yABS origin
This method uses a user-defined value as the origin. When measuring the height from the surface
plate, set the surface plate as the origin point with a value of 0 mm.
Example: The surface plate is set as the origin at 0 mm.
Obtain the
measurement relative
to the surface plate
Surface plate
To use a datum other than the surface plate, assign that value as the origin point.
Example: Surface a1 is set as the origin at 50 mm.
Obtain the measurement relative to a1
Tips
a1
50 mm
For details about setting the ABS origin, "Setting the ABS origin" (page 11)
70 mm
10
No. 99MAF029B
1 Before Using This Product
yINC origin
This method uses an arbitrary point on the workpiece as the origin. The specified point acts as the
datum for the measurements and is assigned a value of 0 mm.
Example: Surface a1 is set as the origin (normally 0 mm).
Obtain the measurement relative to a1
a1
Tips
Setting the ABS origin
Setting the surface plate as the origin
z
Press .
1
Confirm that [+000.000] is displayed on the LCD screen.
2
If a different value is displayed, use , , , or to change the value to [+000.000].
For details about setting the INC origin, "Setting the INC origin" (page 13)
Tips
Slowly bring the probe into contact with the surface plate until a beep sound is made.
3
»The origin setup is complete.
For details about configuring the settings, "Setting a point other than the surface plate as the
origin" (page 12)
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No. 99MAF029B
1 Before Using This Product
Setting a point other than the surface plate as the origin
z
As an example, the procedure for setting the origin point to [+25.000 mm] using a 25 mm gauge block
is explained below.
Tips
Press .
1
Press to make [+] flash.
2
If [–] is displayed, press or to change it to [+].
You can perform the settings using the dial test indicator or the dial indicator instead of the probe.
Repeatedly press until the value in the 10s place flashes.
3
Press or to display [2].
4
12
No. 99MAF029B
1 Before Using This Product
Display [5] in ones place using the same procedure described in steps
5
Slowly bring the probe into contact with the 25 mm gauge block until a beep sound is made.
6
»The origin setup is complete.
Tips
Setting the INC origin
Press .
1
For measurements using a dial test indicator or dial indicator, bring the stylus into contact with the
gauge block, and then press to finish the setup.
3
and 4.
Slowly bring the probe into contact with the desired origin point until a beep sound is made.
2
»The origin setup is complete.
13
No. 99MAF029B
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