RealWear HMT-1Z1 User manual

RealWear, Inc. Copyright 2019 www.realwear.com
Version 1.1.4 –Updated for Release 10.4.0
HMT-1Z1
HMT Release 10 User Guide
®

RealWear, Inc. Copyright 2019 www.realwear.com
Table of Contents
RealWear Head Mounted Tablet One Z1 ...................................................................................................................................... 3
HMT-1Z1 Features ........................................................................................................................................................... 4
HMT-1Z1 Product Specifications...................................................................................................................................5
Introduction: Understanding Intrinsically Safe Devices and Their Use in Hazardous Locations ......................... 6
HMT Release 10 –Overview.........................................................................................................................................13
HMT-1Z1 Safety Guidelines..........................................................................................................................................15
Safety and Usage Guidelines........................................................................................................................................16
HMT-1Z1 Connectivity...................................................................................................................................................17
HMT-1Z1 Box Contents.................................................................................................................................................17
HMT-1Z1 Device Overview............................................................................................................................................18
HMT-1Z1 Device Overview –Details...........................................................................................................................19
HMT-1Z1 Setup Guide ...................................................................................................................................................................24
Wearing the HMT............................................................................................................................................................24
Remote configuration for HMT from web browser ...................................................................................................28
Determining Eye Dominance ........................................................................................................................................29
Headwear with HMT Devices .......................................................................................................................................30
Using the HMT with a Hard Hat....................................................................................................................................32
Using the HMT without a Hard Hat..............................................................................................................................32
Wearing HMT with Eye Protection...............................................................................................................................32
HMT-1Z1 Charging Basics............................................................................................................................................33
Configuring your HMT on Release 10 .........................................................................................................................34
Settings............................................................................................................................................................................34
Setting Up Screen Lock .................................................................................................................................................35
Unlocking the HMT.........................................................................................................................................................37
HMT Release 10 Wireless Update ...............................................................................................................................38
Selecting HMT Interface Language.............................................................................................................................40
HMT MicroSD Card ........................................................................................................................................................41
How to insert a MicroSD card:......................................................................................................................................41
Setting Up and Using a MicroSD Card.........................................................................................................................43
HMT Device Care............................................................................................................................................................45
Storing the HMT .............................................................................................................................................................45
Cleaning the HMT device ..............................................................................................................................................46
HMT Interaction Modes.................................................................................................................................................47
Speech Keyboard............................................................................................................................................................48
Voice Control...................................................................................................................................................................51
HMT Release 10 Software Overview ...........................................................................................................................................53
My Programs...................................................................................................................................................................55
Recent Applications .......................................................................................................................................................56
My Files............................................................................................................................................................................57
My Documents................................................................................................................................................................60
Media Player....................................................................................................................................................................62
Deleting Files from File Manager .................................................................................................................................64
My Camera ......................................................................................................................................................................66
My Controls .....................................................................................................................................................................72
Action Button ..................................................................................................................................................................76
Power Management.......................................................................................................................................................77
Microphone Settings......................................................................................................................................................78
Screen Orientation..........................................................................................................................................................78
Power Warnings..............................................................................................................................................................79
Notifications....................................................................................................................................................................80
Barcode Reader ..............................................................................................................................................................81
HMT-1Z1 Ownership Information ................................................................................................................................................83
HMT-1Z1 Regulatory and Compliance Statements...................................................................................................84
Declaration of Conformity.............................................................................................................................................86
HMT-1Z1 Specific Absorption Rate (SAR) Information ............................................................................................87
HMT-1Z1 Limited Warranty and Software License ...................................................................................................88
HMT-1Z1 i.Safe Safety Instructions ............................................................................................................................89

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RealWear Head Mounted Tablet One Z1
The RealWear HMT-1Z1 is the world’s first hands-free Android™ tablet class wearable computer for industrial workers
and is an intrinsically safe ATEX Zone 1 and CSA C1/D1 certified fully rugged head-mounted device.
The RealWear HMT-1Z1 provides the foundation for Connected Worker programs.
Use it in wet, dusty, hot, dangerous and loud industrial environments.
It optionally snaps into safety helmets or attaches to bump caps and can be used with safety glasses or corrective
eyewear.
The high-resolution micro display fits just below your line of sight and views like a 7” tablet. It’s an industrial dashboard:
there when you need it and out of your way when you don’t.
The HMT-1Z1 works with powerful software applications from our solution partners in four core categories, each
optimized for completely hands-free voice control. That means no scrolling, swiping, or tapping - just simple voice
commands.
Use it for remote mentor video calling, document navigation, guided workflow, mobile forms and industrial IoT data
visualization.

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HMT-1Z1 Features
Intrinsically Safe
ATEX ZONE 1 AND CSA C1/D1
100% Hands free
Voice based operating system with local speech
recognition in loud areas.
Powerful Audio
Integrated speaker and 3.5mm audio jack for use with
hearing protection.
Unmatched Noise Cancellation
The HMT-1Z1 uses four microphones and advanced
algorithms to perform noise cancellation prior to voice
recognition.
PPE Compatible
Designed to work with standard hard helmets, bump
caps and safety glasses.
Full-Shift Internal Battery
8–10 hours with typical use.
Outdoor Display
Viewable in bright sunlight.
Water Proof
IP66 –Protected against heavy seas or powerful jets
of water.
Dust Tight
IP66 –Complete protection against the ingress of
micro particles.
Drop Proof
Resistant to 2-meter drops onto concrete from any
angle.
Built Rugged
Fully operational from -20° C to +50° C.

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HMT-1Z1 Product Specifications
Core Platform & Functions
Chipset 2.0 GHz 8-core Qualcomm® Snapdragon™
625 with Adreno 506 GPU - OpenGL ES 3.1 & OpenCL
2.0
Included Applications
Document Navigator, Camera with Barcode Reader,
Video Recorder, Media Player
Languages Supported
English, Spanish, French, German, Italian, Portuguese,
Russian, Mandarin Chinese, Japanese, Korean, Thai,
Polish
Memory
16 GB Internal Storage / 2 GB RAM / MicroSD slot
(max card supported 64 GB)
Operating System
Android 8.1.0 (AOSP) + WearHF™ hands-free interface
Connectivity & Sensors
Bluetooth
BT 4.1 LE (Low Energy)
Wi-Fi
802.11 a/b/g/n/ac –2.4GHz and 5GHz
GPS and Location
GPS, GLONASS, A-GPS
IMU
9-DOF (3-axis accelerometer, magnetometer, and
gyroscope), software enhanced stabilization
Battery
Capacity
3400 mAh Li-Ion, rechargeable
Battery Life
Full shift (8-10 hours) with typical use
Physical Characteristics
Weight
430 g
Ruggedization
Intrinsically safe, IP66, MIL-STD-810G, 2-meter drop
test
Dedicated Keys
Power key, application-specific Action key
Ports
3.5mm audio, 1 micro-USB
Boom Arm
Adjust six ways for all head sizes, left or right eye
compatible, display flips out of the way when not in
use
Display
Type
20° field-of-view, 1-meter fixed focus 24-bit color LCD,
0.33 inch diagonal, outdoor visible
Resolution
WVGA (854x480)
Audio
Microphone
4 digital microphones with active noise cancellation
Accurate voice recognition even in 95 dBA of typical
industrial noise
Speaker
Internal 91 dB loudspeaker
Multimedia
Camera
16 MP 4-axis optical image stabilization, PDAF with
LED flashlight
Video
Up to 1080p @30fps. Codecs: VP8, VP9 and hardware
encoding support for H.264, H.265 HEVC
Accessories
Included
Wall Charger, Micro-USB Charging Cable with inline
Charging Protection “safety box”, Overhead Strap, Rear
Head Pad
Optional
Hard Hat Clips, intrinsically safe (IS certified) Ear Bud
Hearing Protection Headphone rated at 33dB noise
reduction rating (NRR), Soft Pouch Carrying Case,
Semi Rigid Carrying Case, replacement Overhead
Straps and Rear Pads, Hard Hat, Micro SD card

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Introduction: Understanding Intrinsically Safe Devices and Their Use in
Hazardous Locations
Background
RealWear launched a model of its award-winning ruggedized head-mounted wearable computer for industry called the
HMT-1Z1. The HMT-1Z1 is deemed “Intrinsically Safe.”
Introduction
While much has been written about operating equipment safely, there has been far less literature written on the
equipment itself that must be used. This white paper attempts to explain simply what it means for a product to be
deemed intrinsically safe, and what type of certification is necessary to effectively reduce the risk of an explosion.
Choosing the right certified equipment for the right job is an important task of every buyer.
Company disclaimer
This paper should serve only as a primer and other documents and expertise is required for final purchasing decisions.
What does Intrinsically Safe mean?
Intrinsic safety is a design approach to make an equipment safe to be used in a hazardous location. Hazardous
locations are the areas where flammable liquids, gases or vapors or combustible dust exist in sufficient quantities to
produce an explosion or fire. In hazardous locations, specially designed equipment must be used to protect against the
potentially explosive environments. These devices which can be used in the potentially explosive environments without
causing an explosion are called Intrinsically Safe devices. The intrinsically safe design technique is based on limiting
energy, electrical and thermal to a level below that required to ignite a specific hazardous atmospheric mixture.
What is an Explosion?
An explosion is a rapid increase in volume and release of energy in an extreme manner, usually with the generation of
high temperatures and the release of gases. There are three elements which must be present to cause an explosion:
Figure 0: Three Required Elements for Occurrence of an Explosion
1. Ignition Source
An ignition source is an element which can cause a fire or explosion. Open flames, sparks, static electricity and hot
surfaces are all possible ignition sources.
2. Flammable substance
Flammable substances are those gases, liquids and solids that will ignite and continue to burn in air if exposed to a
source of ignition.
3. Oxidizer
An oxidizer is a kind of chemical whereby fuel is required to burn. An oxidizer must be present in sufficient quantity in
combination with the flammable substance to produce an explosive mixture. The most common oxidizer is air (O2).
Industries like refineries, chemical plants, paint shops, mills, flour silos, tanks, cleaning facilities, and loading facilities
for flammable gases, liquids, and solids are the places where explosions occur frequently.
How to eliminate/minimize the possibility of an explosion?
As mentioned above, there are three elements which must be present to cause an explosion. If one of these elements is
eliminated, ignition will not occur. In hazardous locations, flammable substances and oxidizers cannot be eliminated
with certainty. Therefore, inhibiting ignition of a potentially explosive atmosphere can eliminate danger at the source.
The intrinsically safe device limits the electrical energy at potential sources of ignition in electrical circuits (hot
components and spark sources) to such low levels that –even under abnormal (fault) conditions –there is no
possibility of the electrical energy igniting an explosive atmosphere.

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How to tell if equipment is legitimately safe to be used in hazardous locations?
An intrinsically safe product must go through a rigorous set of tests put forth by experts in the field of safety. Products
that stand up to these standards and pass these tests are considered “Intrinsically Safe Certified.”
There are many different authorized agencies that certify intrinsically safe equipment. The European certification is
called ATEX; the most prevalent United States agency is called UL; the most well-known Canadian agency is called CSA;
and, a general provider of certification across the globe is called IECEx. Any equipment that is used in hazardous
locations should be certified by one of these well-known systems and agencies.
What is ATEX?
ATEX is an abbreviation for "ATmosphere EXplosible". At the same time, ATEX is the abbreviated name of the European
Directive 2014/34/EU concerning the placing on the market of explosion-proof electrical and mechanical equipment,
components and protective systems.
It also covers safety devices, controlling devices and regulating devices intended for use outside potentially explosive
atmospheres but required for, or contributing to, the safe functioning of equipment and protective systems with respect
to the risks of explosion.
Equipment and protective systems which fall under Directive 2014/34/EU may be placed on the market only if they bear
a CE mark and are accompanied by an EC attestation of conformity certifying that the basic health and safety
requirements have been met and that the applicable conformity assessment procedures have been observed.
Classification of Zones
According to Directive 2014/34/EU, a potentially explosive area is a space in which the atmosphere could become
explosive on account of the local and/or operational conditions. An explosive atmosphere is defined as a mixture with
air, under atmospheric conditions, of flammable substances in the form of gases, vapors, mists or dust in which, after
ignition has occurred, combustion spreads to the entire unburned mixture. In North America, hazardous locations have
traditionally been defined by a combination of classes and divisions as follows:
Hazard - Gas / vapor / mist
Zone 0
A place in which an explosive atmosphere consisting of a mixture with air of dangerous substances in
the form of gas, vapor or mist is present continuously or for long periods or frequently
Zone 1
A place in which an explosive atmosphere consisting of a mixture with air of dangerous substances in
the form of gas, vapor or mist is likely to occur in normal operation occasionally
Zone 2
A place in which an explosive atmosphere consisting of a mixture with air of dangerous substances in
the form of gas, vapor or mist is not likely to occur in normal operation but, if it does occur, will persist
for a short period only
Figure 1: Zone Classification for Gas/Vapor/Mist

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Dust clouds in the explosive region (above the minimum explosible concentration) are categorized into 3 zones, based
upon the grade of release.
Hazard - Powder / dust
Zone 20
A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is present
continuously, or for long periods or frequently.
Zone 21
A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is likely to
occur in normal operation occasionally.
Zone 22
A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is not
likely to occur in normal operation but, if it does occur, will persist for a short period only.
Figure 2: Zone Classification for Combustible Dust/Powder
What is IECEx?
International Electrotechnical Commission System for Certification to Standards Relating to Equipment for Use in
Explosive Atmospheres (IECEx System)
IECEx is a voluntary system which provides an internationally accepted means of proving compliance with IEC
standards. IEC standards are used in many national approval schemes and, as such, IECEx certification can be used to
support national compliance, negating the need in most cases for additional testing.
Benefits of IECEx
Because countries operate under different standards, “Ex” equipment often needs to be re-tested and re-certified to the
appropriate standards of that country, adding to the cost of the equipment. The IECEx scheme significantly reduces the
need for re-testing and certification by conforming to international IEC standards and therefore makes international
trade easier, quicker and more cost-effective.
IECEx Process
CSA Group and Sira Certification Service are both Accepted Certification Bodies (ExCB) and Test Laboratories (ExTL)
and, as such, can assess a product to the relevant standards, resulting in the compilation of an IECEx Test Report
(ExTR) and IECEx Certificate of Conformity (CofC).
Figure 3: Typical ATEX and IECEx Markings

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What is CSA?
CSA stands for the Canadian Standards Association. The organization, CSA International, is recognized throughout
North America and Europe. Like other certification companies, it tests consumer and business products to see how it
responds to certain situations and types of wear.
CSA uses the same classification of hazardous locations set forth by the NEC, which breaks hazardous locations into
classes and divisions. CSA also accounts for the European zones, which are equivalent to divisions. For example, in
North America, you may see it stated as, “Class 1, Division 1”, while in Europe, you will see it stated as, “Class 1, Zone 1”.
It is also seen abbreviated as, “C1/D1”, “C1D1,” or “C1-D1.”
What is NEC500?
The National Electrical Code (NEC), is a regionally adoptable standard for the safe installation of electrical equipment in
the United States. NEC500 refers to Article 500 in NEC. A hazardous (classified) location is defined an area where the
possibility of fire or explosion can be created by the presence of flammable or combustible gases or vapors,
combustible dust, or easily ignitable fibers/filings. Electric arcs, sparks, and/or heated surfaces can serve as a source
of ignition in such environments. Article 500 provides a foundation for applying Article 501 (Class I Locations), Article
502 (Class II Locations), Article 503 (Class III Locations), and Article 504 (Intrinsically Safe Systems)—all of which
immediately follow Article 500.
The NEC organizes flammability properties into Class I, II, and III, in Article 501, 502, and 503, respectively. It defines
and describes these in Article 500 (OSHA also defines and describes these). Article 500 is the basis for all hazardous
location work and the related Articles that follow it (see Figure).
Flammability of combustible liquids are defined by their flash-point. The flash-point is the
temperature at which the material will generate sufficient quantity of vapor to form an
ignitable mixture. The flash point determines if an area needs to be classified. A material
may have a relatively low auto-ignition temperature yet if its flash-point is above the
ambient temperature, then the area may not need to be classified. Conversely, if the
same material is heated and handled above its flash-point, the area must be classified
for proper electrical system design, as it will then form an ignitable mixture.
Divisions, zones, and groups
NEC article 500, 501, 502, and 503, Class I, II, and III locations are further broken down
into Divisions. Divisions and zones simply refer to the constancy and/or level of the
hazard.
There are two divisions and three zones:
Division 1 or Zone 0
the hazard is continuous
Division 1 or Zone 1
the hazard is intermittent
Division 2 or Zone 2
the hazard is present only under abnormal conditions
There are three hazardous location classes –respectively Class 1, Class 2, and Class 3. They simply refer to the type of
hazard in general terms:
Class 1
the hazard is a flammable vapor
Class 2
the hazard is a flammable dust
Class 3
the hazard is a flammable fiber
Each chemical gas or vapor used in industry is classified into a gas group.
Figure 4: Article 500

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NEC Division System Gas & Dust Groups
Area
Group
Representative Materials
Class I, Division 1 & 2
A
Acetylene
B
Hydrogen
C
Ethylene
D
Propane
Class II, Division 1 & 2
E (Division 1
only)
Metal dusts, such as magnesium (Division 1 only)
F
Carbonaceous dusts, such as carbon & charcoal
G
Non-conductive dusts, such as flour, grain, wood & plastic
Class III, Division 1 & 2
None
Ignitable fibers/flyings, such as cotton lint, flax & rayon
Zone 0, 1 & 2
IIC
Acetylene & Hydrogen(equivalent to NEC Class I, Groups A
and B)
IIB+H2
Hydrogen
(equivalent to NEC Class I, Group B)
IIB
Ethylene
(equivalent to NEC Class I, Group C)
Zone 20, 21 & 22
IIIC
Conductive dusts, such as magnesium
(equivalent to NEC Class II, Group E)
IIIB
Non-conductive dusts, such as flour, grain, wood & plastic
(equivalent to NEC Class II, Groups F and G)
IIA
ignitable fibers/flyings, such as cotton lint, flax & rayon
(equivalent to NEC Class III
Mines susceptible to
firedamp
I (IEC only)
Methane
Table 0: NEC Division System Gas & Dust Groups
Group IIC is the most severe Zone system gas group. Hazards in this group gas can be ignited very easily indeed.
Equipment marked as suitable for Group IIC is also suitable for IIB and IIA. Equipment marked as suitable for IIB is also
suitable for IIA but NOT for IIC. If equipment is marked, for example, Ex e II T4 then it is suitable for all subgroups IIA, IIB
and IIC
A list must be drawn up of every explosive material that is on the refinery/chemical complex and included in the site
plan of the classified areas. The above groups are formed in order of how explosive the material would be if it was
ignited, with IIC being the most explosive Zone system gas group and IIA being the least. The groups also indicate how
much energy is required to ignite the material by energy or thermal effects, with IIA requiring the most energy and IIC
the least for Zone system gas groups.