HT THT32 User manual

Copyright HT ITALIA 2016 Version EN 1.01 - 25/03/2016
ENGLISH
User manual

THT32
EN - 1
Table of contents:
1PRECAUTIONS AND SAFETY MEASURES ........................................................................... 2
1.1During use........................................................................................................................................ 2
1.2After use........................................................................................................................................... 2
2GENERAL DESCRIPTION ....................................................................................................... 3
3PREPARATION FOR USE ....................................................................................................... 4
3.1Initial checks..................................................................................................................................... 4
3.2Instrument power supply.................................................................................................................. 4
3.3Calibration........................................................................................................................................ 4
3.4Storage............................................................................................................................................. 4
4NOMENCLATURE.................................................................................................................... 5
4.1Description of the instrument ........................................................................................................... 5
4.2Description of function keys ............................................................................................................. 7
4.2.1Menu/ key...................................................................................................................................... 7
4.2.2Enter key............................................................................................................................................ 7
4.2.3Keys , , ,................................................................................................................................ 7
4.2.4T key (Trigger) ................................................................................................................................... 7
4.2.5Inserting the micro SD Card .............................................................................................................. 7
5OPERATING INSTRUCTIONS................................................................................................. 8
5.1Description of the main interface...................................................................................................... 8
5.1.1Adjusting the distance of the object in Blending Fusion function....................................................... 8
5.2General menu description................................................................................................................ 9
5.2.1Menu EMS......................................................................................................................................... 9
5.2.2Menu UNIT ...................................................................................................................................... 10
5.2.3Menu MAXMIN ................................................................................................................................ 11
5.2.4Menu PLT ........................................................................................................................................ 11
5.2.5Menu DATE ..................................................................................................................................... 12
5.2.6Menu MEMORY............................................................................................................................... 13
5.2.7Menu BGT ....................................................................................................................................... 13
5.2.8Menu ALARM .................................................................................................................................. 14
5.2.9Menu DISPLAY................................................................................................................................ 15
5.2.10Menu DIST....................................................................................................................................... 15
5.2.11Menu LANG..................................................................................................................................... 16
5.2.12Menu INFO ...................................................................................................................................... 16
5.3Using the instrument ...................................................................................................................... 17
5.4Transferring the images onto the PC............................................................................................. 17
6MAINTENANCE...................................................................................................................... 18
6.1General information........................................................................................................................ 18
6.2Recharging the internal battery...................................................................................................... 18
6.3Cleaning the instrument ................................................................................................................. 18
6.4End of life ....................................................................................................................................... 18
6.5Accessories.................................................................................................................................... 18
6.5.1Accessories provided....................................................................................................................... 18
7TECHNICAL SPECIFICATIONS............................................................................................. 19
7.1Environment................................................................................................................................... 19
7.1.1Environmental conditions for use..................................................................................................... 19
8ASSISTANCE ......................................................................................................................... 20
8.1Warranty conditions........................................................................................................................ 20
8.2Assistance...................................................................................................................................... 20

THT32
EN - 2
1 PRECAUTIONS AND SAFETY MEASURES
The instrument has been designed in compliance with the directives relevant to electronic
measuring instruments. For your safety and in order to prevent damaging the instrument,
please carefully follow the procedures described in this manual and read all notes
preceded by symbol with the utmost attention. Before and after carrying out the
measurements, carefully observe the following instructions:
CAUTION
Do not carry out any measurements in case gas, explosive materials or
flammables are present, or in humid or dusty environments.
Do not carry out any measurement in case you find anomalies in the
instrument such as deformation, breaks, substance leaks, absence of
display on the screen, etc.
Keep the instrument steady during any measuring operation.
Do not carry out any measurements which exceed the working and storage
temperature ranges specified in § 7.1.1.
Only the accessories provided together with the instrument will guarantee
safety standards. They must be used only if in good conditions and
replaced with identical models, when necessary.
Check that the battery is correctly inserted.
Check that the LCD display gives indications consistent with the function
selected.
Do not direct the instrument at very high intensity radiation sources (e.g. the
sun) in order to prevent damaging the IR sensor.
Prevent hits or strong vibrations in order to keep the instrument from
damage.
When bringing the instrument from a cold to a hot environment, leave it on
long enough for condensation water to evaporate.
In this manual, and on the instrument, the following symbols are used:
Warning: observe the instructions given in this manual; improper use could
damage the instrument or its components.
Compliant with European Standards
1.1 DURING USE
CAUTION
Failure to comply with the caution notes and/or instructions may damage
the instrument or be a source of danger for the operator.
Use the instrument only in the temperature ranges indicated in § 7.1.1.
1.2 AFTER USE
When measurement is complete, switch off the instrument. If the instrument is not to be
used for a long time, remove the battery.

THT32
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2 GENERAL DESCRIPTION
The instrument is a digital thermal camera capable of carrying out infrared temperature
measurements of objects and providing thermographic images. It is also very easy to use
and needs little maintenance.
The main characteristics of the instrument are:
Infrared temperature measurement ranging from -20°C to 300°C
Built-in photo camera for a visual image
“Blending Fusion” function
3 measuring cursors
6 standard colour palettes
Automatic detection of hot/cold spots of the image
Storage of BMP images on external micro SD card
IR sensor resolution: 32x31pxl
USB port for PC connection and image transfer
Rechargeable Li-ION battery
Some applications of the digital thermal camera are:
Predictive and preventive maintenance of electrical and mechanical appliances
Monitoring of the temperature of working processes
Maintenance and troubleshooting on forced ventilation ducts
Domestic/industrial use in troubleshooting room insulation problems
Safety problems

THT32
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3 PREPARATION FOR USE
3.1 INITIAL CHECKS
Before shipping, the instrument has been checked from an electric as well as mechanical
point of view. All possible precautions have been taken so that it is delivered undamaged.
However, we recommend generally checking the instrument in order to detect possible
damage suffered during transport. In case anomalies are found, immediately contact the
forwarding agent.
We also recommend checking that the packaging contains all components indicated in §
6.5. In case of discrepancy, please contact the Dealer. In case the instrument should be
returned, please follow the instructions given in § 8
3.2 INSTRUMENT POWER SUPPLY
The instrument is supplied by 1x3.7V rechargeable Li-ION battery with AC mains power
supply, which also provides for the recharge of the mentioned battery. Both of these
systems are provided together with the instrument. For battery recharge, please refer to §
6.2.
3.3 CALIBRATION
The instrument has the technical specifications described in this manual. The instrument's
performance is guaranteed for one year.
3.4 STORAGE
In order to guarantee precise measurement, after a long storage time under extreme
environmental conditions, wait for the instrument to come back to normal condition (see §
7.1.1).

THT32
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4 NOMENCLATURE
4.1 DESCRIPTION OF THE INSTRUMENT
Fig. 1: Description of the instrument's front and backside
CAPTION:
1 LCD display
2 Function keys Menu/ , Enter, , , ,
3 Grip
4 In-built visual photo camera
5 IR sensor
6 USB port for connecting AC adapter/battery charger
7 Trigger key (T)
8 Battery compartment cover

THT32
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Fig. 2: Description of the instruments side
CAPTION
6 USB port for connecting AC adapter/battery charger
7 Trigger key (T)
8 Battery compartment cover
9 Hole for tripod insertion
Fig. 3: Description of the instrument's inputs and outputs
CAPTION
1 Inside of the battery compartment
2 Slot for micro SD card insertion
3 Battery insertion section

THT32
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4.2 DESCRIPTION OF FUNCTION KEYS
The instrument is provided with 6 function keys indicated as Menu/ , Enter, , , ,
and with a trigger key “T”.
4.2.1 Menu/ key
Press the Menu/ key to switch on the instrument. The instrument shows the normal
measuring screen. To switch off the instrument, press and hold for 2 seconds the Menu/
key. With the instrument switched on, press the Menu/ key to enter/exit the general
menu (see §)
4.2.2 Enter key
Pressing the Enter key allows entering the programming section an saving the value of
system parameters in the instrument’s general menu (see §).
4.2.3 Keys , , ,
The arrow keys ,,,allow setting system parameters in the instrument’s general
menu, and defining percentage and distance of the “Blending Fusion” function (see §). The
arrow keys ,,,also allow scrolling through the images saved in the micro SD card
(see §).
4.2.4 T key (Trigger)
Pressing the trigger key Tfound on the front part of the instrument allows activating the
Data HOLD function (freezing an image on the display) in order to save it in the micro SD
card (see §).
4.2.5 Inserting the micro SD Card
To insert the micro SD card, proceed as follows:
1. Open the battery compartment cover (see Fig. 1 – part 8)
2. Insert the micro SD card into the dedicated slot inside the battery compartment (see
Fig. 3 – part 2)
3. Note the “ ” symbol at display
4. Restore the battery compartment cover to its position.

THT32
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5 OPERATING INSTRUCTIONS
5.1 DESCRIPTION OF THE MAIN INTERFACE
The instrument shows the following main interface on the display:
Fig. 4: Main instrument interface
The meaning of the symbols found on the display is described below.
Symbol Description
=0.95 Set value of object emissivity (see § 5.2.1)
13:55 Indication of the system's current time
Indication of fitted micro SD card
Indication of battery charge level
Indication of distance in “Blending Fusion” function (see § 5.1.1)
32.0°C Indication of the temperature value associated with the central steady
cursor
Palette Indication of colour palette (see § 5.2.4)
Cursor (red) associated with the Maximum temperature of the image on
the display.
Cursor (green) associated with the Minimum temperature of the image on
the display.
5.1.1 Adjusting the distance of the object in Blending Fusion function
The instrument is provided with the “Blending Fusion” function, which allows aligning the
infrared and the visual image. This function is therefore especially useful in the instant
search of heat maps found on the surface of the framed object. Due to the different
position of the lens and of the built-in photo camera, when the object is close to the lens,
the visual image tends to become bigger, while the IR image tends to reduce. When the
object is more than 2m far from the lens, this effect tends to disappear. The instrument
allows setting the distance of the object in order to compensate the effect at distances
shorter than 2m. Proceed as follows:
1. Frame the object to be measured
2. Use the arrow keys or to adjust the infrared/visual image mixing percentage from
0% to 100% in steps of 25%.
3. Use the arrow keys or to set the value of distance between lens and object. The
following values are available: 0.5m (1.6ft), 1m (3.3ft), 2m(6.6ft) and 3m(9.8ft)

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5.2 GENERAL MENU DESCRIPTION
By pressing the Menu/ key, the instrument shows the following general menu, which
allows accessing the internal functions:
Fig. 5: Instrument general menu
5.2.1 Menu EMS
In this section, it is possible to set the values of parameter Emissivity of the material of
the object to be measured. In order to carry out accurate temperature measurements, it is
important to define the correct emissivity value (), which represents the ability of a body to
emit infrared radiation, according to the kind of material the measured object is made of.
Table 1 shows the emissivity values for the most common materials. Emissivity takes
values between 0 (mirror or perfectly reflecting surface) and 1 (perfectly radiating black
body). Most of the painted or oxydized surfaces have an emissivity value of approximately
0.95.
Material Emissivity
Water 0.96
Stainless steel 0.14
Aluminium foil 0.09
Asphalt 0.96
Cement 0.97
Cast iron 0.81
Rubber 0.95
Wood 0.85
Bricks 0.75
Tape 0.96
Brass foil 0.06
Human skin 0.98
PVC plastic 0.93
Polycarbonate 0.80
Oxydized Copper 0.78
Rust 0.80
Paint 0.90
Earth 0.93
Table 1: Emissivity values of typical materials