Fluke 421D Operating Manual
421D
Distance Meter
Users Manual
September 2009
© 2009 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
LIMITED WARRANTY AND LIMITATION OF LIABILITY
Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is
two years and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days. This warranty extends only to
the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product
which, in Fluke's opinion, has been misused, altered, neglected, contaminated, or damaged by accident or abnormal conditions of operation
or handling. Fluke warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has
been properly recorded on non-defective media. Fluke does not warrant that software will be error free or operate without interruption.
Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to
extend a greater or different warranty on behalf of Fluke. Warranty support is available only if product is purchased through a Fluke
authorized sales outlet or Buyer has paid the applicable international price. Fluke reserves the right to invoice Buyer for importation costs of
repair/replacement parts when product purchased in one country is submitted for repair in another country.
Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair, or replacement of a defective
product which is returned to a Fluke authorized service center within the warranty period.
To obtain warranty service, contact your nearest Fluke authorized service center to obtain return authorization information, then send the
product to that service center, with a description of the difficulty, postage and insurance prepaid (FOB Destination). Fluke assumes no risk
for damage in transit. Following warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke
determines that failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal condition of operation or handling,
including overvoltage failures caused by use outside the product’s specified rating, or normal wear and tear of mechanical components,
Fluke will provide an estimate of repair costs and obtain authorization before commencing the work. Following repair, the product will be
returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges (FOB Shipping
Point).
THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR
LOSSES, INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental or
consequential damages, the limitations and exclusions of this warranty may not apply to every buyer. If any provision of this Warranty is held
invalid or unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability
of any other provision.
11/99
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
Table of Contents
Title Page
Introduction .................................................................................................................... 1
How to Contact Fluke ..................................................................................................... 1
Use of the instrument ..................................................................................................... 1
Permitted use ............................................................................................................ 1
Prohibited use ........................................................................................................... 1
Limits of use .............................................................................................................. 2
Areas of responsibility ............................................................................................... 2
Responsibilities of the manufacturer (Fluke)......................................................... 2
Responsibilities of the manufacturer of non-Fluke accessories ............................ 2
Responsibilities of the person in charge of the instrument.................................... 2
Hazards in use........................................................................................................... 3
Precautions ............................................................................................................... 3
Safety Instructions.......................................................................................................... 3
Symbols..................................................................................................................... 3
Electromagnetic Compatibility (EMC) ........................................................................ 4
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FCC statement (U.S.A only) .......................................................................................... 4
Laser classification.................................................................................................... 5
Integrated distance meter .................................................................................... 5
Laser Class 2 products: ....................................................................................... 5
Start-up.......................................................................................................................... 6
Inserting/replacing batteries...................................................................................... 6
Changing the reference point (multifunctional endpiece) .......................................... 7
Keypad...................................................................................................................... 8
Display ...................................................................................................................... 9
Menu functions .............................................................................................................. 10
Settings..................................................................................................................... 10
Navigation in the menu ........................................................................................ 10
General description .............................................................................................. 10
Setting the unit for distance measurements .............................................................. 12
Setting the unit for tilt measurements........................................................................ 12
Beep (BEEP)............................................................................................................. 12
Continuous laser ().............................................................................................. 12
Measuring with the tripod (TRIPOD)......................................................................... 12
Display - keypad illumination ().............................................................................. 13
Reset - returning the instrument to the factory settings (RESET) ............................. 13
Operation....................................................................................................................... 13
Switching on and off.................................................................................................. 13
CLEAR button........................................................................................................... 13
Display / keypad illumination..................................................................................... 13
Reference setting...................................................................................................... 13
Measuring...................................................................................................................... 14
Single distance measurement................................................................................... 14
Minimum/maximum measurement ............................................................................ 14
Functions ....................................................................................................................... 15
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Contents (continued)
Addition / subtraction ................................................................................................. 15
Distance measuring .............................................................................................. 15
Area........................................................................................................................... 15
Volume ........................................................................................................................... 15
Tilt measurement ........................................................................................................... 16
Tilt sensor calibration................................................................................................. 16
Indirect horizontal distance........................................................................................ 17
Stake out function...................................................................................................... 17
Room corner angle function ...................................................................................... 18
Indirect measurement................................................................................................ 19
Indirect measurement - determining a distance using 2 auxilliary measurements 19
Indirect Measurement - determining a distance using 3 measurements............... 20
Indirect measurement - determining a chain value using 3 measurements .......... 20
Storage of constants/historical storage...................................................................... 21
Storage of a constant............................................................................................ 21
Recalling the constant .......................................................................................... 21
Historical storage .................................................................................................. 21
Timer (self-triggering) ................................................................................................ 21
Appendix ........................................................................................................................ 22
Message codes ......................................................................................................... 22
Technical data ........................................................................................................... 23
Measuring conditions................................................................................................. 25
Measuring range................................................................................................... 25
Target surfaces..................................................................................................... 25
Care and Cleaning..................................................................................................... 25
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Users Manual
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Distance Meter
Introduction
Carefully read the Safety Instructions and the User
Manual before using this product.
How to Contact Fluke
To contact Fluke, call one of the following telephone
numbers:
• Technical Support USA: 1-800-44-FLUKE (1-800-
443-5853)
• Calibration/Repair USA: 1-888-99-FLUKE (1-888-
993-5853)
• Canada: 1-800-36-FLUKE (1-800-363-5853)
• Europe: +31 402-675-200
• Japan: +81-3-3434-0181
• Singapore: +65-738-5655
• Anywhere in the world: +1-425-446-5500
Or, visit Fluke's website at www.fluke.com
To register your product, visit http://register.fluke.com
.
To view, print, or download the latest manual supplement,
visit http://us.fluke.com/usen/support/manuals
.
Use of the instrument
Permitted use
• Measuring distances
• Computing functions, e. g. areas and volumes
• Measuring tilts
Prohibited use
• Using the instrument without instruction
• Using outside the stated limits
• Deactivation of safety systems and removal of
explanatory and hazard labels
• Opening of the equipment by using tools
(screwdrivers, etc.), as far as not specifically
permitted for certain cases
.
• Carrying out modification or conversion of the
product
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• Use of accessories from other manufacturers without
the express approval of Fluke
• Deliberate or irresponsible behavior on scaffolding,
when using ladders, when measuring near machines
which are running, or near parts of machines or
installations which are unprotected
• Aiming directly into the sun
• Pointing the laser directly at people or animals in light
or dark conditions.
• Inadequate safeguards at the surveying site (for
example, when measuring on roads, construction
sites, etc.)
Limits of use
Note
See section “Technical Data”.
The Fluke 421D is designed for use in areas permanently
habitable by humans, do not use the product in explosion
hazardous areas or in aggressive environments.
Areas of responsibility
Responsibilities of the manufacturer (Fluke)
Fluke is responsible for supplying the product, including
the User Manual and original accessories, in a completely
safe condition.
Responsibilities of the manufacturer of non-Fluke accessories
The manufacturers of non-Fluke accessories for the 421D
are responsible for developing, implementing and
communicating safety concepts for their products. They
are also responsible for the effectiveness of these safety
concepts in combination with Fluke equipment.
Responsibilities of the person in charge of the instrument
W Warning
The person responsible for the instrument
must ensure that the equipment is used in
accordance with the instructions. This
person is also accountable for the
deployment of personnel and for their
training and for the safety of the equipment
when in use.
The person in charge of the instrument has the following
duties:
• To understand the safety instructions on the product
and the instructions in the User Manual.
• To be familiar with local safety regulations relating to
accident prevention.
• To inform Fluke immediately if the equipment
becomes unsafe.
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Distance Meter
Safety Instructions
Hazards in use
W Caution
Watch out for erroneous distance
measurements if the instrument is defective
or if it has been dropped or has been
misused or modified.
Precautions
Carry out periodic test measurements. Particularly after
the instrument has been subject to abnormal use, and
before, during and after important measurements.
Make sure the 421D optics is kept clean and that there is
no mechanical damage to the bumpers.
W Caution
In using the instrument for distance
measurements or for positioning moving
objects (for example, cranes, building
equipment, platforms, etc.) unforeseen
events may cause erroneous measurements.
Only use this product as a measuring sensor, not as a
control device. Your system must be configured and
operated in such a way, that in case of an erroneous
measurement, malfunction of the device or power failure
due to installed safety measures (for example, safety limit
switch), it is assured that no damage will occur.
~W Warning
Flat batteries must not be disposed of with
household waste. Care for the environment
and take them to the collection points
provided in accordance with national or local
regulations.
The product must not be disposed of with household
waste.
Dispose of the product appropriately in accordance with
the national regulations in force in your country.
Always prevent access to the product by unauthorized
personnel.
Product specific treatment and waste management
information can be downloaded from the Fluke home
page at http://www.fluke.com
dealer.
Safety Instructions
Symbols
The symbols used in the Safety Instructions have the
following meanings:
Indicates a potentially hazardous situation or
an unintended use which, if not avoided, will
result in death or serious injury.
or received from your Fluke
W Warning
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W Caution
Indicates a potentially hazardous situation or
an unintended use which, if not avoided, may
result in minor injury and/or in appreciable
material, financial and environmental
damage.
Symbol Description
Do not dispose of this product as
~
unsorted municipal waste. Go to Fluke’s
website for recycling information.
* Warning. Laser
W
P
Important paragraphs which must be adhered to
in practice as they enabled the product to be
used in a technically correct and efficient
manner.
Electromagnetic Compatibility (EMC)
The term "electromagnetic compatibility" is taken to mean
the capability of the product to function smoothly in an
environment where electromagnetic radiation and
Risk of Danger. Important information.
See Manual.
Conforms to European Union directives.
Note
electrostatic discharges are present, and without causing
electromagnetic interference to other equipment.
W Warning
The 421D conforms to the most stringent
requirements of the relevant standards and
regulations. Yet, the possibility of it causing
interference in other devices cannot be
totally excluded.
W Caution
Never attempt to repair the product yourself.
In case of damage, contact Fluke
(www.fluke.com
).
FCC statement (U.S.A only)
This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a
residential installation.
This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful
interference to radio communications.
However, there is no guarantee that interference will not
occur in a particular installation.
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