ENGLISH
User manual
© Copyright HT ITALIA 2011 Release EN 1.00 - 29/07/2011
Table of contents:
HT3320
1. PRECAUTIONS AND SAFETY MEASURES ............................................................... 3
1.1. Preliminary instructions ........................................................................................................ 3
1.2. During use ............................................................................................................................ 4
1.3. After use ............................................................................................................................... 4
2. GENERAL DESCRIPTION ........................................................................................... 4
3. PREPARATION FOR USE ........................................................................................... 5
3.1. Initial checks ........................................................................................................................ 5
3.2. Instrument power supply ...................................................................................................... 5
3.3. Calibration ............................................................................................................................ 5
3.4. Storage ................................................................................................................................. 5
4. NOMENCLATURE ........................................................................................................ 6
4.1. Instrument description .......................................................................................................... 6
4.2. Description of function keys ................................................................................................. 6
4.3. Description of the symbols shown on the display ................................................................ 7
5. SETTING SYSTEM PARAMETERS ............................................................................. 8
5.1. Date/Time setting ................................................................................................................. 9
5.2. Measuring unit setting .......................................................................................................... 9
5.3. Language setting ................................................................................................................. 9
5.4. Font color setting ............................................................................................................... 10
5.5. Cursor shape setting .......................................................................................................... 10
5.6. Backlight brightness percentage setting ............................................................................ 10
5.7. Auto power off setting ........................................................................................................ 11
5.8. Display switching off setting ............................................................................................... 11
5.9. Key sound setting .............................................................................................................. 11
5.10. Memory status setting ........................................................................................................ 12
5.11. Default settings .................................................................................................................. 12
6. SETTING MEASURING FUNCTIONS ........................................................................ 13
6.1. Emissivity setting................................................................................................................ 13
6.2. Setting the maximum alarm temperature threshold ........................................................... 15
6.3. Setting the minimum alarm temperature threshold ............................................................ 15
6.4. Laser pointer ...................................................................................................................... 15
6.5. Continuous measurement .................................................................................................. 15
6.6. MAX/MIN display ................................................................................................................ 16
6.7. Average/Difference display ................................................................................................ 16
6.8. air / %RH Temperature display .......................................................................................... 16
6.9. Dew point / wet bulb temperature display .......................................................................... 16
6.10. Temperature display with K-type probe .............................................................................. 17
7. OPERATING INSTRUCTIONS ................................................................................... 18
7.1. Switching on/off the instrument .......................................................................................... 18
7.2. Instrument reset ................................................................................................................. 18
7.3. IR video mode .................................................................................................................... 19
7.4. Infrared temperature measurement ................................................................................... 21
7.5. Dew point temperature measurement ................................................................................ 22
7.6. Datalogger function ............................................................................................................ 23
7.7. Te mperature measurement with K-type probe ................................................................... 24
8. OPERATIONS WITH THE MEMORY ......................................................................... 25
9. CONNECTING THE INSTRUMENT TO THE PC ....................................................... 25
10. MAINTENANCE .......................................................................................................... 26
10.1. General .............................................................................................................................. 26
10.2. Internal battery charge ....................................................................................................... 26
10.3. Cleaning the instrument ..................................................................................................... 26
10.4. End of life ........................................................................................................................... 26
11. TECHNICAL SPECIFICATIONS ................................................................................. 27
11.1. General characteristics ...................................................................................................... 27
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HT3320
11.2. Environment ....................................................................................................................... 28
11.2.1. Environmental conditions ....................................................................................................... 28
11.3. Accessories provided ......................................................................................................... 28
11.4. Optional accessories .......................................................................................................... 28
12. SERVICE .................................................................................................................... 29
12.1. Warranty conditions ........................................................................................................... 29
12.2. Service ............................................................................................................................... 29
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HT3320
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 the symbol with the utmost attention.
The following symbol is used in this manual:
When this symbol is displayed, the instrument is not able to emit a laser pointer.
Always prevent the laser from radiating to your eyes, in order to prevent
any injury. Class II laser device compliant with EN 60825-1.
1.1. PRELIMINARY INSTRUCTIONS
WARNING
WARNING
• Use the instrument only as specified in this user manual. An improper use
may damage the instrument.
• During use and storage, keep the instrument away from direct sunlight or
sources of light, hot surfaces or objects, high temperatures, high humidity
or particularly critical environmental conditions.
• After a period of storage under extreme environmental conditions, let the
instrument resume normal operating conditions before using it.
• If the instrument is moved from a cold to a hot environment, some
condensation may appear on the focal lens which emits infrared rays Wait
for the condensation to dissipate before taking measurements.
• Do not touch the focal lens which emits infrared rays.
• Make sure that the target is larger than the unit’s spot size The smaller the
target, the closer you should be to it. When accuracy is critical, make sure
the target is at least twice as large as the spot size.
• Only the accessories provided together with the instrument will guarantee
safety standards. They must be in good conditions and replaced with
identical models, when necessary.
• Do not perform any measurements beyond the limits specified in chapter
11.
• Check that the battery is correctly inserted
• Do not carry out any measurement if you notice anomalous conditions such
as breakages, leakages of battery liquid, blind display, etc.
• This instrument is not recommended for use in measuring shiny or polished
surfaces (stainless steel, aluminum, etc.).
• The instrument cannot measure temperature through transparent surfaces
such as glass. The instrument will measure the surface temperature of the
glass instead.
• Steam, dust, smoke, etc. can prevent accurate measurement.
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1.2. DURING USE
Please carefully read the following recommendations and instructions:
WARNING
• Never press the T key when the laser is active and the instrument is directed
towards the eyes. The instrument emits a laser pointer
• If the object to be measured has a smooth surface reflecting the laser,
prevent the laser from radiating to our eyes.
• Never radiate the laser if flammable gas in present.
• If the " " symbol is displayed during use, interrupt testing and recharge
the battery according to the procedure described in § 10.2.
• Be extremely careful when the laser pointer is turned on.
1.3. AFTER USE
• When measurement is complete, switch off the instrument
• If you expect not to use the instrument for a long period, remove the battery
2. GENERAL DESCRIPTION
HT3320 is an innovative digital thermometer capable of carrying out infrared (IR)
temperature measurements of objects, also providing a visual display of the object thanks
to the in-built photo camera, perform IR videos, recording the temperature values (logger)
and measuring temperature using a K-type probe.
The characteristics of the instrument are:
¾ IR temperature measurement with/without in-built visual photo camera
¾ Distance / Spot ratio 50:1
¾ Image saving in JPG format (640x480pxl)
¾ Video saving in 3GP format
¾ Air temperature/humidity measurement with in-built sensor
¾ Temperature measurement of the dew point and of the wet bulb
¾ Temperature measurement by means of external K-type probe
¾ Datalogger function for temperature measure recording
¾ Internal memory and external SD Card for measure saving
¾ Modern and ergonomic design
¾ Double built-in laser pointer
¾ Automatic reading lock (HOLD)
¾ Continuous measurements (Auto Mode)
¾ Emissivity adjustable from 0.10 to 1.00
¾ Selection of measuring unit °C /°F
¾ Detection of MAX, MIN, DIF, AVG values
¾ Setting of high and low alarm thresholds on temperature measurements
¾ Backlit LCD display
¾ Automatic power off
¾ PC connection via USB cable for image/video/recording download
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HT3320
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.
However, we suggest you to check it rapidly, to detect possible damage which may have
occurred during transport.
In case anomalies are found, immediately contact the Dealer.
We recommend checking that the packaging contains all components indicated in § 11.3.
In case the instrument should be replaced, please carefully follow the instructions given in
§ 12.
3.2. INSTRUMENT POWER SUPPLY
The instrument is supplied by a rechargeable Li-ION 3.7V 1400mAh battery with AC mains
power supply, which also provides for the recharge of the mentioned battery. Both of these
systems are provided with the instrument. The battery can also be recharged by directly
connecting it to the PC via USB (see § 10.2).
3.3. CALIBRATION
The instrument has the technical specifications described in this manual. Its performance
is guaranteed for one year starting from the date of purchase.
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
the environmental specifications contained in § 11.2).
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4. NOMENCLATURE
4.1. INSTRUMENT DESCRIPTION
Fig. 1: Instrument description
CAPTION:
1. LCD display
2. Function keys (see § 4.2)
3. Battery compartment cover
4. T key (Trigger)
5. Lens protection cover
6. In-built photo camera
7. Double laser pointer
8. IR sensor
9. In-built sensor for
temperature/humidity
measurement
10. Connector for k-type
thermocouple insertion
11. USB interface
12. Slot for SD card insertion
13. Battery
4.2. DESCRIPTION OF FUNCTION KEYS
Fig. 2: Description of function keys
CAPTION:
1. Key (Arrow/Photo
camera)
2. Key
(ON/OFF and
ESC)
3. Key
(Arrow/Video)
4. Key (ENTER)
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A
A
A
A
A
HT3320
4.3. DESCRIPTION OF THE SYMBOLS SHOWN ON THE DISPLAY
Symbol Description Symbol Description
AT
RH%
DP
WB
TK
Photo camera activation
ctivation of IR temperature
measurement without photo
camera
ctivation of temperature
measurement of dew point
Active laser pointer
Measurement performance
(Scan - pressure of T key)
Data freezing on the display
(HOLD – releasing of T key)
larm for high temperature
threshold exceeded activated
Alarm for high temperature
threshold exceeded in
progress
larm for low temperature
threshold exceeded activated
larm for low temperature
threshold exceeded in
progress
It indicates the difference
Air Temperature
DIF
between two measured IR
temperature values
It indicates the average value
Air relative humidity
AVG
among the measured IR
temperature values
It indicates the minimum value
Dew point temperature
MIN
among the measured IR
temperature values
It indicates the maximum
Wet bulb temperature
MAX
value among the measured IR
temperature values
It indicates the temperature
value measured with the K
probe
It indicates the current mode
of continuous measurement
(see § 6.5)
Table 1: Description of the symbols shown on the display
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5. SETTING SYSTEM PARAMETERS
Every time it is switched on, the instrument shows the following general menu
IR CAM
IR MEASURE
DEW POINT
DATALOGGER
DATA MEMORY
SETTINGS
Fig. 3: Instrument general menu
Select item “SETTINGS” using the arrow keys S or T and confirming with the ENTER
key. The following screen appears on the display:
SYSTEM SET SYSTEM SET
Date/Time Keypress Alert
Unit (°C /°F) Memory Status
Language Factory Settings
Font color
Cursor
Backlight
Auto Power Off
Screen Timeout
Fig. 4: System setting menu
Use the arrow keys S or T to select the items and confirm with ENTER to access the
relevant programming sections.
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HT3320
5.1. DATE/TIME SETTING
In this section it is possible to set the system Date/Time. There are two options to set the
Time: “24 hours” (00-24 format) or AM/PM.
Date setting
1. Press the ENTER key to switch from a Date field to the other
2. Use the arrow keys S or T to set the Date values in format “DD-MM-YYYY”
3. Press the ESC key to save and exit the function
Time setting
1. Press the ENTER key to switch from a Time format to the other
2. Use the arrow keys S or T to set the Time values
3. Press the ESC key to save and exit the function
5.2. MEASURING UNIT SETTING
In this section it is possible to set the temperature measuring unit either in °C (Celsius) or
°F (Fahrenheit)
1. Use the arrow keys S or T to select the option °C or °F (see Fig. 5)
2. Press the ESC key to save and exit the function
Fig. 5: Selection of the measuring unit
5.3. LANGUAGE SETTING
In this section it is possible to set the system language, choosing among the available
options
1. Use the arrow keys S or T to select the desired language (see Fig. 6)
2. Press the ESC key to save and exit the function
Fig. 6: System language selection
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HT3320
5.4. FONT COLOR SETTING
In this section it is possible to set the color of the font shown on the instrument’s display
1. Use the arrow keys S or T to select the desired color, choosing among the available
options: Orange, Green, Black, Blue, Gold and Purple (see Fig. 7)
2. Press the ESC key to save and exit the function
Fig. 7: Font color selection
5.5. CURSOR SHAPE SETTING
In this section it is possible to set the shape of the central cursor (if required) associated
with the IR sensor
1. Use the arrow keys S or T to select the options: Off (no cursor), Cross, Circle (see
Fig. 8)
2. Press the ESC key to save and exit the function
Fig. 8: Selection of measuring cursor shape
5.6. BACKLIGHT BRIGHTNESS PERCENTAGE SETTING
In this section it is possible to set the brightness percentage of the display’s backlight
1. Use the arrow keys S or T to select the options from 30% (minimum brightness) to
100% (maximum brightness) (see Fig. 9)
2. Press the ESC key to save and exit the function
Fig. 9: Backlight percentage selection
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HT3320
5.7. AUTO POWER OFF SETTING
In this section it is possible to disable the Auto Power Off function of the instrument or to
set a value among the available ones
1. Use the arrow keys S or T to select the options: Disabled, 3 Min, 15 Min or 60 Min
(see Fig. 10)
2. Press the ESC key to save and exit the function
Fig. 10: Auto Power Off setting selection
5.8. DISPLAY SWITCHING OFF SETTING
In this section it is possible to disable the automatic switching off function of the display
(the function may be enabled again by pressing any key) or to choose a time value among
the available ones
1. Use the arrow keys S or T to select the options: Disabled, 30s, 1 Min or 2 Min (see
Fig. 11)
2. Press the ESC key to save and exit the function
Fig. 11: Display switching off setting selection
5.9. KEY SOUND SETTING
In this section it is possible to disable/enable the sound associated with the pressure of the
function keys of the instrument
1. Use the arrow keys S or T to select the options: Disable, Enable (see Fig. 12)
2. Press the ESC key to save and exit the function
Fig. 12: Key sound setting selection
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HT3320
5.10. MEMORY STATUS SETTING
In this section it is possible to select the type of memory (internal or SD Card) in which to
save the measured data. The instrument also provides indications on the used and on the
free memory space.
1. Use the arrow keys S or T to select the options: Device memory, SD Card (see Fig.
13)
2. Press the ENTER key to format the internal memory or the SD Card. Press the down
arrow key T to confirm the operation or the up arrow key S to cancel the operation.
3. Press the ESC key to save and exit the function
Fig. 13: Memory selection for data saving
Use a micro SD Card with a maximum capacity of 8GB
WARNING
5.11. DEFAULT SETTINGS
This section allows automatically setting the factory-set default conditions on the
instrument, as described in Table 2
Parameter Default value Parameter Default value
Emissivity 0.95 Measuring unit °C
HIGH alarm Enabled Language English
LOW alarm Enabled Character color Orange
Laser Enabled Cursor Circle
Continuous
measurement
Disabled Backlight 100%
MAX/MIN Enabled Automatic power off 3 min
Average/Difference Enabled LCD switching off 30s
AT / RH% Enabled Key sound Disabled
DP / WB Enabled Memory status Internal
K type Enabled Language English
Table 2: Parameter default values
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6. SETTING MEASURING FUNCTIONS
In each measuring mode (see § 7), by pressing the ENTER key, the instrument shows the
following screen:
MEASURE SET MEASURE SET
Emissivity Dewpoint / Wetbulb
Alarm High Type K
Alarm Low
Laser
Auto Mode
Max/Min
Average/Diff
Ambient Temp. / %RH
Fig. 14: Measurement setting menu
Use the arrow keys S or T to select the items and confirm with ENTER to access the
relevant programming sections.
6.1. EMISSIVITY SETTING
The radiating power or emissivity “ε” is a value between 0 and 1 which indicates the
capacity of an object to emit energy in the infrared frequency range. This parameter
depends both on the material the object is made of and on the finishing (painting).
Parameter “ε” is set by default to 0.95 because, in practice, it has been established that
approx. 90% of the objects have such a radiating power.
1. Select the first item (ε = x.xx) and press the ENTER key to set emissivity (see Fig. 15
and Table 3). Use the arrow keys S or T to set the value and then the ENTER key to
confirm
2. Use the arrow keys S or T to select one of the common materials listed below, among
the options: Concrete, Glass, Human skin, Ice/Water, Plastic, Wood
3. Press the ESC key to save and exit the function
Fig. 15: Emissivity setting menu
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Material Emissivity Material Emissivity
Zinc (oxidized) 0.1 (*) Carbon 0.95
Iron (polarized) 0.3 Red brick (rough) 0.75 - 0.9
Tin-plated steel 0.1 (*) Fire clay 0.75
Gold (polished) 0.1 (*) Asbestos 0.95
Silver (polished) 0.1 (*) Cast iron (at 100°C) 0.45
Chromium (polished) 0.1 (*) Cast iron (at 1000°C) 0.6 – 0.7
Steel (ground sheet) 0.6 Zirconium 0.85
Steel (oxidized) 0.9 Wrought iron 0.95
Liquid iron 0.9 Aluminium (polished) 0.1 (*)
Oxidized aluminium 0.25 Oxidized aluminium at 260°C 0.6
Oxidized aluminium at
800°C
0.3 Brass (polished) 0.1 (*)
Brass (rough) 0.2 Brass (oxidized) 0.6
Copper (polished) 0.05 (*) Copper (oxidized) 0.8
Molten copper 0.15 Lead (pure) 0.1 (*)
Lead (oxidized at 25°C) 0.3 Lead (oxidized at 200°C) 0.6
Nickel (pure) 0.1 (*) Nickel-Chromium 0.7
Nick-Chromium (oxidized) 0.95 Mortar 0.89 .. 0.91
Marble 0.9 Plaster 0.9
Alumina (fine grain) 0.25 Alumina (coarse grain) 0.45
Silica (fine grain) 0.4 Silica (coarse grain) 0.55
Quartz (rough) 0.9 Graphite 0.75
Timber 0.8 - 0.9 Enamel (any color) 0.9
Paint (any color) 0.95 Lacquer 0.9
Water 0.98 Rubber (smooth) 0.9
Rubber (rough) 0.98 Plastic (various) 0.8 - 0.95
Paper 0.9 Silicone 0.7
Asphalt 0.90 .. 0.98 Cloth (black) 0.98
Concrete 0.94 Human skin 0.98
Cement 0.96 Leather 0.75 .. 0.80
Sand 0.90 Charcoal powder 0.96
Earth 0.92 .. 0.96 Glass 0.90 .. 0.95
Water 0.92 .. 0.96 Ceramic 0.90 .. 0.94
Ice 0.96 .. 0.98 Rubber 0.94
Snow 0.83 Plastic 0.85 .. 0.95
(*) Emissivity variable with point
Table 3: Emissivity values of materials
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6.2. SETTING THE MAXIMUM ALARM TEMPERATURE THRESHOLD
The instrument is provided with an acoustic alarm on IR temperature measurements; the
alarm sounds when a maximum threshold which can be set up to 1000°C is exceeded.
1. Use the arrow keys S or T to enable/disable the alarm (see Fig. 16)
2. With enabled alarm, press the ENTER key and then use the arrow keys S or T (press
and hold the keys to quickly scroll the values) to set the threshold value. Press ENTER
again to confirm.
3. Press the ESC key to save and exit the function
Fig. 16: Menu for setting the maximum alarm threshold
6.3. SETTING THE MINIMUM ALARM TEMPERATURE THRESHOLD
The instrument is provided with an acoustic alarm on IR temperature measurements, for
values below a minimum threshold which can be set up to -50°C.
1. Use the arrow keys S or T to enable/disable the alarm (see Fig. 17)
2. With enabled alarm, press the ENTER key and then use the arrow keys S or T (press
and hold the keys to quickly scroll the values) to set the threshold value. Press ENTER
again to confirm.
3. Press the ESC key to save and exit the function
Fig. 17: Menu for setting the minimum alarm threshold
6.4. LASER POINTER
In this section it is possible to enable/disable the double laser pointer which can be used in
IR temperature measurements.
1. Use the arrow keys S or T to select the options: Disable, Enable (see Fig. 18)
2. Press the ESC key to save and exit the function
Fig. 18: Laser pointer activation menu
6.5. CONTINUOUS MEASUREMENT
In this section it is possible to enable/disable the continuous measurement mode of IR
temperature by the instrument with no need to press the T key.
1. Use the arrow keys S or T to select the options: Disable, Enable (see Fig. 19)
2. Press the ESC key to save and exit the function
Fig. 19: Continuous measurement activation menu
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6.6. MAX/MIN DISPLAY
In this section it is possible to enable/disable the display of the Max and Min values of IR
temperature.
1. Use the arrow keys S or T to select the options: Off, On (see Fig. 20)
2. Press the ESC key to save and exit the function
Fig. 20: Max/Min display activation menu
6.7. AVERAGE/DIFFERENCE DISPLAY
In this section it is possible to enable/disable the display of the Average and Difference
values of the IR temperature measured by the instrument.
1. Use the arrow keys S or T to select the options: Off, On (see Fig. 21)
2. Press the ESC key to save and exit the function
Fig. 21: Average/Difference display activation menu
6.8. AIR / %RH TEMPERATURE DISPLAY
In this section it is possible to enable/disable the display of the air temperature values and
of the relative humidity measured by the internal sensor of the instrument.
1. Use the arrow keys S or T to select the options: Off, On (see Fig. 22)
2. Press the ESC key to save and exit the function
Fig. 22: Air temperature/humidity display activation menu
6.9. DEW POINT / WET BULB TEMPERATURE DISPLAY
In this section it is possible to enable/disable the display of the dew point and wet bulb
temperature values measured by the instrument.
1. Use the arrow keys S or T to select the options: Off, On (see Fig. 23)
2. Press the ESC key to save and exit the function
Fig. 23: Dew point/wet bulb temperature display activation menu
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6.10. TEMPERATURE DISPLAY WITH K-TYPE PROBE
In this section it is possible to enable/disable the display of the temperature values
measured with the k-type probe.
1. Use the arrow keys S or T to select the options: Off, On (see Fig. 24)
2. Press the ESC key to save and exit the function
Fig. 24: Activation menu for display of temperature values measured with K-type probe
WARNING
By inserting the K-type thermocouple (see § 7) the instrument automatically
enables temperature measurement with K probe, whose display can be disabled
by the user.
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HT3320
7. OPERATING INSTRUCTIONS
Upon start-up, the instrument shows the following 6 operating modes, which can be
selected through the arrow keys S or T, confirming with ENTER
IR VIDEO
IR MEASURE
DEW POINT
DATALOGGER
DATA MEMORY
SETTINGS
Fig. 25: Instrument general menu
MEASURING
MODE
DESCRIPTION
IR temperature measurement with in-built photo camera + IR video
IR VIDEO
recording + relative air temperature/humidity measurement with
internal sensor (see § 7.3)
IR MEASURE IR temperature measurement without saving (see § 7.4)
DEW POINT IR temperature measurement + dew point temperature (see § 7.5)
DATALOGGER
DATA MEMORY
Recording of temperature measurement with setting of time scan
and alarm conditions (see § 7.6)
It allows displaying and deleting images, videos and recordings
saved in the instrument (see § 8)
SETTINGS It allows setting the instrument’s system parameters (see § 5)
7.1. SWITCHING ON/OFF THE INSTRUMENT
1. To switch on the instrument, press and hold the key until the general menu is
displayed
2. Press and hold the key until the display switches off
7.2. INSTRUMENT RESET
In case all functions on the display get stuck, the instrument allows carrying out a
Hardware Reset operation, in order to restore normal operation. Proceed as follows:
1. Use the tip of a pencil or of another object, slightly touching the inner part of the hole
next to the USB port labeled “RESET”
2. The instrument switches off automatically and can be switched on again The RESET
operation does not delete any data from the memory
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HT3320
7.3. IR VIDEO MODE
This mode allows carrying out IR temperature measurement with the in-built photo
camera, saving the images in standard JPG format, recording IR videos of IR temperature
measurements saving them in 3GP format, measuring the air temperature/humidity with
the in-built sensor and measuring temperature with type K probe (if enabled – see § 6.10)
1. Switch on the instrument and enter the “VIDEO IR” mode
2. Set the desired values of the measurement parameters (see § 6)
3. Hold the meter and point it towards the object whose temperature is to be measured.
The object will appear on the display because of the in-built photo camera
4. Press and hold the S key to perform a zoom operation of the imagine at display and
press and hold the T key to restore the normal sizes of the imagine at display
5. Press and hold the T key to start measuring, observing on the display the symbol
and the temperature value in the middle of the display, which varies in real time (see
Fig. 26)
Fig. 26: IR temperature measurement with in-built photo camera
6. Release the T key to stop the measurement and freeze the last read value. The display
shows the following symbol “
”. The temperature values associated with fields AT,
RH%, DP and WB, if selected (see § 6.8, 6.9) are shown on the display.
7. Fig. 27 shows the ratio between distance of the instrument from the object being
measured and the spot size. As the distance (D) from the object increases, the spot
size (S) becomes larger. The focal point of the instrument is 914mm (36”). The
displayed spot sizes indicate the areas which include 90% of the detected energy.
Fig. 27: Diameter of surface S with reference to the distance D from the object (in mm)
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HT3320
8. Make sure that the object whose temperature is to be measured is at least as large as
the unit’s spot (see Fig. 28). The smaller the object is, the closer you should be to it.
When accuracy is critical, make sure the object is at least twice as large as the
spot size. To find a hot spot, aim the thermometer at the measured object, then move
the instrument across the object until a hot spot is located.
Fig. 28: Spot size area
9. The instrument displays the values of the fields MAX, MIN, MED, AVG and DIF, if
selected (see § 6.6, 6.7).
10. In case continuous measurement is activated (see § 6.5), press the ENTER key,
followed by the arrow key S to exit the mode or press the arrow key T to
enable/disable the laser pointer if activated in the relevant section (see § 6.4).
11. While holding the instrument steady on the object on which it was pointed, press the
arrow key to enter the saving section of IR images and other parameters (if
selected) and press the arrow key S again to save the image or the arrow key T to
exit without saving.
12. Press the arrow key to enter the section for recording an IR video and press the
START key (T) to activate the video and the STOP key (T) to stop recording. The
instrument automatically saves the video in the memory.
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7.4. INFRARED TEMPERATURE MEASUREMENT
This mode allows rapidly measuring the IR temperature without using the in-built photo
camera, further to carrying out air temperature/humidity/dew point/wet bulb measurements
without saving them in the instrument’s memory.
1. Switch on the instrument and enter the “IR MEASUREMENT” mode
2. Set the desired values of the measurement parameters (see § 6)
3. Hold the meter and point it towards the object whose temperature is to be measured.
4. Press and hold the T key to start measuring, observing on the display the symbol
and the temperature value in the middle of the display, which varies in real time (see
Fig. 29)
Fig. 29: IR temperature measurement
5. Release the T key to stop the measurement and freeze the last read value. The display
shows the following symbol “
”. The temperature values associated with fields AT,
RH%, DP and WB, if selected (see § 6.8, 6.9) are shown on the display.
6. The instrument displays the values of the fields MAX, MIN, MED, AVG and DIF, if
selected (see § 6.6, 6.7). The cursor on the graphic bar at the bottom of the display
indicates the MIN (on the left) and MAX (on the right) values and is dynamically
updated according to the measured temperature value.
7. In case continuous measurement is activated (see § 6.5), press the ENTER key,
followed by the arrow key S to exit the mode or press the arrow key T to
enable/disable the laser pointer if activated in the relevant section (see § 6.4).
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7.5. DEW POINT TEMPERATURE MEASUREMENT
This mode allows displaying the dew point temperature, which is useful when making
thermographic surveys for the construction sector, further to the normal IR temperature
measures and air temperature/humidity measures.
1. Switch on the instrument and enter the “DEW POINT” mode
2. Set the desired values of the measurement parameters (see § 6)
3. Hold the meter and point it towards the object whose temperature is to be measured.
4. Press and hold the T key to start measuring, observing on the display the symbol
and the temperature value in the middle of the display, which varies in real time (see
Fig. 30)
Fig. 30: Dew point temperature measurement
5. Release the T key to stop the measurement and freeze the last read value. The display
shows the following symbol “ ”. The temperature values associated with fields AT,
RH%, DP and WB, if selected (see § 6.8, 6.9) are shown on the display.
6. The value on the bar at the bottom of the display indicates the percentage level of
mould corresponding to the measured dew point temperature value (DP).
7. The instrument displays the values of the fields MAX, MIN, MED, AVG and DIF, if
selected (see § 6.6, 6.7).
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7.6. DATALOGGER FUNCTION
In this mode, the instrument records the IR temperature and air temperature/humidity
values with time scan and programmable alarm conditions on the measures.
1. Switch on the instrument and enter the “DATALOGGER” mode.
2. Set the desired values of the measurement parameters (see § 6)
3. Press the ENTER key to enter the programming section of the datalogger function. The
following screen appears on the instrument’s display:
Fig. 31: Datalogger function parameter setting
4. Select the parameters using the arrow keys S or T and press ENTER. Use the arrow
keys S or T again to set the desired values and confirm with ENTER again. The
following parameters are programmable:
PARAMETER DESCRIPTION
High
Low
Time
Color
Setting of the maximum alarm threshold value within range -50°C ÷
1000°C
Setting of the minimum alarm threshold value within range -50°C ÷
1000°C
Setting of the time scan among consecutive recordings within the
measuring campaign in the range 1s ÷ 3600s
Setting of the color of the characters shown on the display (see §
5.4)
Measure Set Setting of the measuring parameters (see § 6)
5. Press and release the T key to start recording. The graphic screen with the real time
temperature measurement is shown at display
6. Press the ESC key to stop recording. Data is automatically saved in the instrument’s
memory (see § 8)
7. Press the ESC key to exit the function and go back to the general menu.
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7.7. TEMPERATURE MEASUREMENT WITH K-TYPE PROBE
WARNING
• Do not compare the infrared temperature measurement with the measurements
made with K-type thermocouples, since (because of the totally different nature
of the two methods) the obtained values may differ remarkably
• Measurement with the K-type thermocouple can be used in situations where IR
measurement cannot be used (e.g.: measurement of shiny/bright surfaces such
as glass and plexiglas)
1. Select one of the measuring modes “IR VIDEO” or “IR MEASUREMENT”, “DEW
POINT” or “DATALOGGER”
2. Activate the temperature measuring option with K-type probe (see § 6.10)
3. Connect the K-type probe to the corresponding inputs (see Fig. 1 – Part 10) respecting
the polarity marked on the instrument and on the probe.
4. Press the T key to start measuring. While measuring, the symbol is shown on the
display and the temperature value will be indicated as “TK”.
5. Release the T key to stop the measurement and freeze the last read value. The display
shows the following symbol “ ”. The temperature values associated with fields AT,
RH%, DP and WB, if selected (see § 6.8, 6.9) are shown on the display. The instrument
displays the values of the fields MAX, MIN, MED, AVG and DIF, if selected (see § 6.6,
6.7)
6. For the “IR VIDEO” mode press the arrow key to enter in the section of saving
temperature measurement with type K probe more than IR imagine and other
parameters (if selected) and press again the S key to save or the T to exit without
save. For the “DATALOGGER” mode the data are automatically saved
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8. OPERATIONS WITH THE MEMORY
The instrument allows saving, in the internal memory or in the external mini SD Card (see
§ 5.10), IR images in JPG format (640x480pxl), IR videos in 3GP format and recordings in
BIN/TXT format. These data can be recalled on the display as follows:
1. Select item “DATA MEMORY” using the arrow keys S or T and press ENTER. The
following screen appears on the instrument’s display:
Fig. 32: Memory area display
PARAMETER DESCRIPTION
Picture
It allows showing on the display and deleting the IR images saved
in the instrument
Video It allows playing and deleting the IR videos saved in the instrument
Logs
It allows showing on the display and deleting the recordings saved
in the instrument
2. Use the arrow keys S or T to select items “Picture”, “Video” or “Logs” and confirm with
ENTER
3. Press the ENTER key to display the images/recordings or playing a video and ENTER
again to delete (by confirming) the selected items
9. CONNECTING THE INSTRUMENT TO THE PC
1. Press ESC key up to show the general menu at display
2. Connect the instrument to the PC via the provided USB cable. The “USB” message is
shown on the display. The instrument is detected by the PC as a removable disk, from
which you can save images, videos and recordings inside the HD (in separate folders),
or delete data from the PC
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10. MAINTENANCE
10.1. GENERAL
1. The instrument you purchased is a precision instrument. While using and storing the
instrument, carefully observe the recommendations listed in this manual in order to
prevent possible damage or danger during use.
2. Do not use the instrument in environments with high humidity levels or high
temperatures. Do not expose to direct sunlight.
3. Always switch off the instrument after use. In case the instrument is not to be used for
a long time, remove the battery to avoid liquid leaks that could damage the instrument’s
internal circuits.
10.2. INTERNAL BATTERY CHARGE
When the display shows the following symbol “ ”, it is necessary to recharge it. This
operation is possible both using the battery charger connected to the electric mains, and
by connecting the instrument to the PC via USB cable
Only expert and trained technicians should perform this operation. Before
carrying out this operation, make sure you have removed possible input
thermocouples.
Recharge via USB cable
1. Connect the USB cable to the instrument (see Fig. 1 – Part 11) and to the USB port of
the PC. The instrument gives out a sound and a screen with the symbol “USB” is
shown on the display.
2. Enter any measuring mode to observe the recharging process of the battery.
Disconnect the cable when the symbol “ ” appears on the display.
Recharge through external battery charger
1. Connect the USB cable to the instrument (see Fig. 1 – Part 11) and to the USB port of
the battery charger.
2. Connect the battery charger to the electric mains. The instrument gives out a sound
and a screen with the symbol “USB” is shown on the display.
3. Enter any measuring mode to observe the recharging process of the battery.
Disconnect the cable when the symbol “
10.3. CLEANING THE INSTRUMENT
Use a soft and dry cloth to clean the instrument. Never use wet cloths, solvents, water, etc.
10.4. END OF LIFE
WARNING
” appears on the display.
WARNING: the symbol indicates that the appliance, the battery and its
accessories must be collected separately and correctly disposed of.
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11. TECHNICAL SPECIFICATIONS
Accuracy is indicated as [% of reading + degree]. It is referred to the following reference
conditions: temperature 18 ÷ 28 °C (64 ÷ 82 °F), humidity < 80 % RH.
INFRARED TEMPERATURE MEASUREMENT
Function Measuring range Resolution Accuracy Response time
±3.5°C (-50 ÷ 20°C)
°C
°F
Spectrum response: 8 ÷ 14um
D/S ratio: 50:1
Emissivity: Adjustable 0.10 ÷ 1.00
Sensor: Thermopile
Laser Diode: Output <1mW, Wavelength 675nm, Class II laser product
-50°C ÷ 1000°C
-58°F ÷ 1832°F
MEASUREMENT BY MEANS OF EXTERNAL, K-TYPE PROBE
Function Measuring range Resolution Accuracy (*)
°C
°F
(*) Uncertainty of the sole instrument, without external probe
-50°C ÷ 1370°C
-58°F ÷ 2498°F
RELATIVE AIR/HUMIDITY TEMPERATURE MEASUREMENT WITH INTERNAL PROBE
Function Measuring range Resolution Uncertainty
Air temperature
Dew point temp.
Relative humidity
0°C ÷ 50°C (32°C ÷
122°F)
0 ÷ 100%RH
11.1. GENERAL CHARACTERISTICS
0.1°C
0.1°F
±(1.0%rgd + 1.0°C) (20 ÷ 500°C)
±1.5%rdg (500 ÷ 1000°C)
±6.3°F (-58 ÷ 68°F)
±(1.0%rgd + 1.8°F) (68 ÷ 932°F)
±1.5%rdg (932 ÷ 1832°F)
0.1°C
0.1°F
0.1°C
(0.1°F)
0.1%
±(0.5%rgd + 1.5°C) (0 ÷ 1370°C)
±(0.5%rgd + 2.7°F) (32 ÷ 2498°F)
±0.5°C / ±0.9°F (10 ÷ 40°C) / (50 ÷ 140°F)
±1.0°C / ±1.8°F (other measuring fields)
±3%RH (40% ÷ 60%)
±3.5%RH (0% ÷ 40%) and (60% ÷ 80%)
±5%RH (80% ÷ 100%)
150ms
±2.5°C (-50 ÷ 0°C)
±4.5°F (-58 ÷ 32°F)
Mechanical characteristics
Size (L x W x H): 205×155×62mm (8×6×2inches)
Weight (battery included): 410g (14 ounces)
Power supply
Battery type: 1x3.7V 1400mAh Li-ION battery
Low battery indication: the display shows symbol “ ”
Battery life: approx. 4 continuous operating hours
Battery recharge: approx. 2 hours with USB/battery charge
External adapter: 100-240VAC 50/60Hz / 5VDC
Display
Characteristics: 2.2” (320x240pxl), backlit LCD display
Auto Power Off: programmable: 3, 15, 60min and disabled
Memory
Internal memory capacity: 70MB (50kB/image; video 3.1MB/min)
External memory: micro SD card (max 8GB)
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11.2. ENVIRONMENT
11.2.1. Environmental conditions
Operating temperature: 0°C ÷ 50°C (32°F ÷ 122°F)
Operating humidity: 10 ÷ 90%RH
Storage temperature: –10°C ÷ 60°C (14°F ÷ 140°F)
Storage humidity: < 90%RH
Max operating altitude: 2000m (6562ft)
This instrument complies with European Directive EMC 2004/108/EC
11.3. ACCESSORIES PROVIDED
• Rechargeable Li-ION battery
• K-type wire probe
• Battery charger power supply
• USB cable
• Tripod
• User manual
• Carrying case
11.4. OPTIONAL ACCESSORIES
The following K-type thermocouples are available:
Model Description
TK107
TK108
TK109
TK110
TK111
Air and gas
temperature
Inner temperature of
fluids and semisolid
substances
Inner temperature of
fluids and solid
substances, fruit,
food, etc.
Surface temperature
Surface temperature
with fixed tip at 90°C
Temperature
range
-40 ÷ 800 °C
-40 ÷ 800 °C
-40 ÷ 800 °C
-40 ÷ 400 °C
-40 ÷ 400 °C
Accuracy
(at 100°C)
± 2.2 °C 200 1.5
± 2.2 °C 200 3
± 2.2 °C 200 4
± 2.2 °C 200 5
± 2.2 °C 260 5
Probe length
(mm)
Probe diameter
(mm)
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12. SERVICE
12.1. WARRANTY CONDITIONS
This instrument is warranted against any material or manufacturing defect, in compliance
with the general sales conditions. During the warranty period, defective parts may be
replaced. However, the manufacturer reserves the right to repair or replace the product.
Should the instrument be returned to the After-sales Service or to a Dealer, transport will
be at the Customer’s charge. However, shipment will be agreed in advance.
Only use original packaging for shipment; any damage due to the use of non-original
packaging material will be charged to the Customer.
The manufacturer declines any responsibility for injury to people or damage to property.
The warranty shall not apply in the following cases:
• Repairs that may become necessary as a consequence of an incorrect use of the
instrument or due to its use together with non-compatible appliances.
• Repairs that may become necessary as a consequence of improper packaging.
• Repairs which may become necessary as a consequence of interventions performed
by unauthorized personnel.
• Modifications to the instrument performed without the manufacturer’s explicit
authorization.
• Use not provided for in the instrument’s specifications or in the instruction manual.
The content of this manual cannot be reproduced in any form without the manufacturer’s
authorization.
Our products are patented and our trademarks are registered. The manufacturer
reserves the right to make changes in the specifications and prices if this is due to
improvements in technology.
12.2. SERVICE
If the instrument does not operate properly, before contacting the After-sales Service,
please check the conditions of the battery and replace it, if necessary.
Should the instrument still operate improperly, check that the product is operated
according to the instructions given in this manual.
Should the instrument be returned to the After-sales Service or to a Dealer, transport will
be at the Customer’s charge. However, shipment will be agreed in advance.
A report will always be enclosed to a shipment, stating the reasons for the product’s
return.
Only use original packaging for shipment; any damage due to the use of non-original
packaging material will be charged to the Customer.
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