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LT7-P/ LT3-P
Thermal Image Camera
User Manual
ZHEJIANG DALI TECHNOLOGY CO.,LTD
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! Warnings, Cautions and Notes
Definitions
WARNING Could cause bodily injury or death.
CAUTION Could cause damage to equipment or permanent loss of data.
NOTE provides useful information to the operator.
Important Information – Read before using the Instrument
WARNING – Laser Radiation is emitted from this device. Do Not stare
into Laser Beam. Class 2 Laser, 635 nm, 0.9mW
CAUTION - Never point the lens directly toward a strong radiation source
(ie. Sun, direct or reflected laser beam, etc ), with power on or power off, as
damage may result to the thermal detector used inside. Permanent
damage may result!
CAUTION - The original shipping carton should be kept for use for future
transportation. Do not drop, shake or impact the thermal imager
excessively, in use or during transportation.
CAUTION - Store the unit in its original case in a cool, dry, well-ventilated
area away from strong electromagnetic fields.
CAUTION - Protect the surface of the lens from being stained or damaged
by foreign objects such as sludge or chemicals. Please replace the lens cap
after use.
CAUTION - Please remember to backup image data regularly to avoid
losing important data.
NOTE - For maximum measurement accuracy, allow 3 to 5 minutes for
camera to stabilize after initial power up.
NOTE - Each camera is factory calibrated. It is recommended that
calibration be performed every 12 months.
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CAUTION - Do not open case. Unit does not contain any user serviceable
parts. Repair should be performed by factory authorized technicians only.
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Contents
! Warnings, Cautions and Notes ......................................................... 2
1 Introduction ................................................................................ 6
1.1 Standard accessories ................................................................................................ 8
1.2 Optional accessories .................................................................................................. 8
2 Camera overview ......................................................................... 9
2.1 Function keys ............................................................................................................... 9
2.2 Interface....................................................................................................................... 13
3 Basic operation .......................................................................... 14
3.1 Battery Installation and Replacement .............................................................. 14
3.1.1 Inserting or removing battery ..................................................................... 14
3.1.2 Replacing battery .............................................................................................. 15
3.2 Battery safety and usage ...................................................................................... 16
3.3 Quick access ............................................................................................................... 17
3.3.1 Capture an image ............................................................................................. 17
3.3.2 Temperature measurement .......................................................................... 17
3.3.3 Freeze and save image ................................................................................... 19
3.3.4 Viewing stored Images ................................................................................... 19
3.3.5 Export saved images ....................................................................................... 20
4 Operation guide ......................................................................... 21
4.1 Graphic interface description ............................................................................... 21
4.1.1 Screen graphic interface ................................................................................ 21
4.1.2 Main menu ........................................................................................................... 22
4.1.3 Dialog box ........................................................................................................... 22
4.1.4 Prompt box interface ....................................................................................... 23
4.2 Measurement ............................................................................................................. 23
4.3 Auto/Manually ............................................................................................................ 25
4.4 Setup menu ................................................................................................................ 25
4.4.1 Measuring Setup ............................................................................................... 26
4.4.2 Adjustment setup ............................................................................................. 27
4.4.3 Analysis setup .................................................................................................... 28
4.4.4 Date/Time setup ............................................................................................... 29
4.4.5 System setup ..................................................................................................... 30
4.4.6 System Info ........................................................................................................ 31
4.4.7 Factory Default .................................................................................................. 32
4.5 File .................................................................................................................................. 33
4.5.1 Open ...................................................................................................................... 33
4.5.2 Save ....................................................................................................................... 34
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4.5.3 Save Setting ....................................................................................................... 36
4.5.4 Auto Save ............................................................................................................ 37
4.5.5 Delete .................................................................................................................... 38
4.5.6 Format .................................................................................................................. 38
5 Technical specifications ............................................................. 40
Troubleshooting .............................................................................. 42
Appendix A ...................................................................................... 43
Common material emissivity（FYI） ............................................................................. 43
Appendix B ...................................................................................... 44
Factory default parameter setting table ...................................................................... 44
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1 Introduction
Thank you for choosing DALI Instruments “LT3-P” or “LT7-P” hand-held
infrared thermal imager.
Model Identification
LT3-P imagers use the detector with 25um 160*120, and measurement
range from -20°C ～+350°C
LT7-P imagers use the detector with 25um 384*288, and measurement
range from -20°C ～+600°C
Features
LT3-P\LT7-P include the following features:
User selectable Auto or manual level and span control
°C, °F or K measurement scale
11 user selectable color palettes
11 user selectable languages
Hot temperature spot measurement
Cold temperature spot measurement
4 removable spot measurements
High temperature Alarm setting
T Reflect - Reflected temperature compensation
2X digital zoom
Freeze screen for viewing current image
Video Output – NTSC or PAL
3 Areas measurements
2 lines measurements
Image storage via TF card
CMOS visible image and storage
Audio recording
Isotherm Alarm
T Correct – Measurement Offset correction
Built in Emissivity Table list of common materials
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Upgrades and Options
LT3-P<7-P Series models are factory upgradeable for Wide Angle or
Telephoto Lenses.
Applications:
Preventive maintenance
Power industry: Power line and power facility thermal state checking;
problem and defect diagnosis.
Electrical system: Identify potential circuit overloads.
Mechanical system: Reduce downtime and avoid catastrophic failure.
Construction science
Roof: Quick identification of water penetration problems.
Structure: Commercial and residential energy audits.
Moisture detection: Determine root cause of moisture and mildew.
Evaluation：Evaluate the resolution to ensure the area completely dry.
Others
Iron and steel industry: Inspect steel refining and rolling processes;
diagnose hot-blast stove defects; detect the embryo temperature of armor
plate, etc.
Fire fighting: Forest fire prevention and detection of latent ignition
source. Preventive detection on specific materials of auto-ignition. Detection
of potential spark ignition sources.
Medical: Human body surface temperature detection and screening.
Petro/chemical: Oil pipeline status inspection; material surface
temperature detection; insulation inspection; power equipment status, etc.
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1.1 Standard accessories
Infrared thermal image camera (with wrist strap)
Carrying case
Video out cable
Lithium ion batteries（2）
User manual, Infrared report and analysis software system CD
Lithium battery charger
Lens cap
TF card
TF card reader
USB cable
1.2 Optional accessories
External 0.5x wide-angle lens
External 2x telescopic lens
Eye patch
Power adapter（with power cable and plug）
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2 Camera overview
2.1 Function keys
2
1
4
5
6
7
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[1] Power key
Press and hold the Power Key for > 3 seconds to power on/off the camera.
! Note: After powering off, please wait ten seconds before powering the
camera on again.
[2] Select/Auto key (Marked “A”)
The “A” or attribute button performs 2 functions.
a) The first function is modification of selected parameters. It is obtained
by a quick press and release (less than 2 seconds), with this functions to
modify their parameters. Subsequent presses will “scroll” through the
available parameters. The selected function will be highlighted in yellow. The
functions include:
Measurement points, areas, and lines
Cursors and lines - pressing the arrow keys will move their position.
Pressing the Menu key will pop up the attribute box. Pressing the C key will
delete the selected parameter.
Areas – Arrow keys adjust the attribute specified in the pop up attribute
box. Pressing the Menu key will pop up the attribute box. In this box, the user
can select to adjust either position or size of the area. After selection, the
arrows will then adjust the attribute.
Color Palette
Pressing the left or right arrows will scroll through the available color
palettes, displaying their name above the palette. The selected palette will
become active after about 3 seconds of selecting it and will be set as the
default power on palette.
Level/Span values
Pressing the left or right arrow will reduce or increase the Span and
pressing the up or down arrow will reduce or increase the Level. If the unit is
in Automatic mode, modifying any of these parameters will select Manual
mode.
b）The second function performed is to force an internal calibration cycle.
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This is performed by pressing and holding the A key for 5 seconds or more.
The camera will make automatic correction to get the most accurate thermal
measurement.
[3] Cancel/Camera key (Marked “C”)
Pressing and releasing the C key cancels the present operation when in
Menu mode.
Pressing and releasing the C key when an image is frozen or being viewed
from memory, will return to real-time measurement status.
When not in menu mode or parameter editing, pressing and releasing the C
key will toggle between the thermal image and the visible CCD camera
image.
When a parameter is selected, such as a measurement cursor, pressing the
C key will delete the highlighted measurement.
[4] Freeze/Save key (Marked “S”)
Used for freezing or saving thermal image. Press the key once to freeze the
image. Press Confirm to save the image or Press C to return to real-time
measurement. If Voice recording is enabled, Voice comment dialog box will
display.
[5] Menu/Confirm key (bar)
Includes Up, Down, Left, Right and Menu/Confirm (center) keys.
Function varies with operation mode.
In Menu mode, it is used for menu selection. Up and Down keys are for
same level of menu operation. Left and Right keys are for different levels
menu operation. Confirm key (center) is to activate the menu and confirm the
choice.
In Image mode, press Up or Down key to activate X2 digital zoom. The
screen will display “X2” in the upper left corner. Press Up or Down key to
return to the original image.
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In Spot Measurement editing mode (activated immediately after adding
a spot or by selecting via the A key), press the Menu key to pop up the
attribute box. Press four navigation keys to move the spot location.
In line temperature measurement editing mode (activated immediately
after adding a line or by selecting via the A key), press the Menu key to pop up
the attribute box. If measurement line is horizontal, press Up and Down keys
to move the line location; press Left and Right keys to move the reference line.
If measurement line is vertical, press Left and Right keys to move the line;
press Up and Down keys to move the reference line.
In area measurement editing mode (activated immediately after adding an
area or by selecting via the A key), press the Confirm key to pop up the
attribute box. Select in the attribute box the parameter to be edited, either size
or position. Press the four navigation keys to move the area location or change
the size of the area.
[6] Trigger/Shortcut key
The trigger key serves as a shortcut to access the following functions:
Laser – Pulling trigger activates laser sight and releasing deactivates it.
Spot– Pulling and releasing trigger adds a spot. Pulling and releasing
trigger again removes the spot.
Area –Pulling and releasing trigger adds an area. Pulling and releasing
trigger again removes the area.
Save – the same with “S” key, pressing to initiate a Save cycle.
IR/CCD - Pulling and releasing trigger toggles between the IR image and
the CCD image.
[7] Microphone
Used for recording a voice message with the Saved image. See Section
4.5.3 for details.
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2.2 Interface
[1] USB output
Inserting USB cable to this port and connecting to computer for data
transmission (only support USB2.0).
[2] TF Card slot
Accepting standard size TF card such as supplied 2GB capacity card, for
device upgrade or image storage.
[3] Video port
It is a video output interface.
[4] Power interface
External power input interface. Power source should be +12VDC. Center
pin is positive terminal.
1
4 2 3
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3 Basic operation
3.1 Battery Installation and Replacement
3.1.1 Inserting or removing battery
Battery compartment is located inside the handle. Turn the cover
counter-clockwise to remove. Remove battery for replacement.
Insert the battery (the battery contacts must face into the battery
compartment).
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Replace the cover and screw down.
! CAUTION: Use only original manufacturer replacement battery. Use of
incorrect battery may result in physical or electrical damage to the instrument
due to incorrect voltage or physical size difference.
3.1.2 Replacing battery
When battery has approximately 5% charge remaining, the warning will be
displayed and the instrument will turn off in approximately 3 seconds.
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Powering off display
It’s better to replace batteries now.
3.2 Battery safety and usage
Batteries should be stored in an ambient temperature of -4°F (–20°C) to
67.9°F (+20°C). Lithium batteries will self-discharge during storage, so
they should be fully charged before storage. Self-discharge may affect long
term battery performance. Furthermore, it is recommended that the battery
should be charged in a set time, as below;
Ambient temperature of:
-4°F (–20°C) to 67.9°F (+20°C), once every 6 months
67.9°F (+20°C) to 113°F (+45°C), once every 3 months
113°F (+45°C) to 149°F (+60°C), once every month
Battery should have greater than 50% charge prior to recharge.
The ambient temperature for charging should be 32°F (0°C) to 104°F
(+40°C). If under 32°F (0°C), the battery capacity will be diminished; if
over 104°F (+40°C), the battery may overheat, resulting in permanent
damage.
WARNING:
Never disassemble, incinerate or puncture battery
Never short circuit the battery
Keep battery dry
Keep out of reach of children
Always dispose of battery in accordance with local, state and federal
regulations
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3.3 Quick access
3.3.1 Capture an image
After installing the battery, press and hold the power key (≥3 seconds)
until the display comes on. After approximately 50 seconds, the power
on routine will finish and the camera will start its measurements.
Remove the lens cap and aim at the target. Adjust the focus for the
clearest target thermal image.
! NOTE: Failure to properly focus the camera will result in increased
measurement error.
3.3.2 Temperature measurement
If no measurement cursors are on screen, add a measurement spot,
area or line by pressing MENU and selecting Measurement. Press
CONFIRM and scroll left or right to select the proper measurement
parameter. Aim the cursor indicator onto the target object on the
screen. The temperature will be displayed in the upper right corner of
the screen. For highest accuracy measurements, force a calibration
cycle by pressing the A key for 5 seconds until “Calibrating” appears
in upper left portion of display.
If you want to measure the current thermal image in detail, press S
key to freeze the image for on-screen analysis. Save the image if
future analysis is desired. For details, see Section 4.
If the target object’s temperature is lower or higher than the limits of
the camera, it will display <XXX° or >XXX° with XXX being the min or
max temperature of the selected range.
To modify the measurements attributes, select the measurement
parameter, and then press the Confirm key. The screen will display
the settings dialog box. The below figures are spot, line and area
measurement respectively.
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Spot settings include emissivity and reference temperature. When Set Ref
is set as Yes, the displayed values of other measurements will be their delta
from this measurement.
Line settings only include the emissivity.
Area settings can modify the emissivity, area measurement type and area
move parameter. Measurement types are Min Temp, Max Temp or Average
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Temp. Area Move parameter choices are Position or Size. The selected
parameter will be adjusted by the directional arrow keys. When “Set Ref” is set
as Yes, the displayed values of other measurements will be their delta from
this measurement.
3.3.3 Freeze and save image
Press S key to freeze the image and select “C” to exit the operation.
There are three ways to save the image:
Press S key to freeze the image and then select ”Save” to save the
image, or select “Cancel” to exit the operation.
Press Menu key to activate the main menu. Choose File->Save and
the system will initiate the save cycle.
With the “Trigger” parameter, located in Setup->Sys. Setup->Trigger,
set to “Save Key”, pulling and releasing the trigger key will initiate the
save cycle.
3.3.4 Viewing stored Images
Press Menu key to activate the main menu. Choose File->Open to
open the image.
When image is opened, choose Left or Right keys to select the
previous or next images respectively.
If the instrument is in IR mode, it will display all IR images of each saved
image, it will display “No Image” if there is no IR image for that saved
image.
If the instrument is in CCD mode, it will display all CCD images of each
saved image, it will display “No Image” if there is no CCD image for
that saved image.
If the trigger is configured to IR/CCD mode by Setup->Sys.
Setup->Trigger, when in image view, the trigger can switch between
IR and CCD images for each saved image. it will display “No Image” if
there is no IR or CCD image for that saved image.
Press C key to exit the Image view mode and return to the real-time
measurement mode.
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3.3.5 Export saved images
Use of USB port to download images in TF card. With a standard USB
cable, connect device port to PC and export saved images.
Remove the TF card and insert into TF card reader, connect to USB port
on PC and export saved images.
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4 Operation guide
4.1 Graphic interface description
4.1.1 Screen graphic interface
[1] Company logo： IRtek
[2] Operating status: displays the current operational status.
[3] Spot temperature measurement: White crosshair.
[4] Selected spot temperature: Yellow crosshair, and show by“*” .
[5] Emissivity: Indicates Imagers emissivity setting.
[6] Minimum temperature: Indicates minimum value of the palette.
[7] Palette: Palette bar. User can choose different palettes.
[8] Maximum temperature: Indicates maximum value of the palette.
[9] Battery status: Indicates the current battery status.
[10]、[11] Result： Indicates the temperature value of the target object. Black
and yellow denotes the temperature value of the selected
object.
[12] Temperature unit: Three options: °C, °F or K.
14
15
13
5 6 7
1
12
9 2 8 3 11
4
10
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[13] External lens symbol: Displays “0.5x” for wide-angle or “2x” for
telephoto lens.
[14] SD card symbol: Displays “SD” when TF card is installed.
[15] Digital zoom symbol: Displays “X2” when digital zoom is activated.
! NOTE: Not all models have all functions, so the working status screen may not
show all features.
4.1.2 Main menu
[1] Main menu: Displays four options: Measurement, auto/manually, Setup,
and File.
[2] Low-level menu: The > indicates a low-level menu is available, accessed
by the right arrow key.
4.1.3 Dialog box
1
2
3
4
1
2
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[1] Dialog box name: Displays the dialog box name, e.g. Measuring Setup.
[2] Item title：A dialog box may contain several items, such as Temp Range.
[3] Item content: Items show specified content. Black means valid or
changeable and white means invalid for this selection.
[4] Unit: Indicates the current selected temperature unit.
4.1.4 Prompt box interface
[1] Prompt box name：Display the prompt box name, e.g. Del file.
[2] Content: Display the content in the prompt box, e.g. Del Image File?
4.2 Measurement
Used for adding or deleting a measurement. Press Menu key to activate
the main menu. Select Measurement and press Confirm key. It will display
the Measurement dialog box. Use the Left and Right arrows to scroll through
the available measurement options. Highlight the option you wish to use and
press Confirm key. Options are:
None – Deletes all measurements from the screen.
Add Hot Spot – adds a moving cursor that automatically displays the
hottest spot in the image. Designated by SH and +H.
1
2
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Add Cold Spot – adds a moving cursor that automatically displays the
coldest spot in the image. Designated by SL and +L.
Add Spot – adds up to 2 fixed cursors, user adjustable by the cursor
editing mode. Designated by S1, +1 and S2, +2.
Horizontal – Adds horizontal line measurement to display profile of
temperatures along the line. Designated by LH. Either Horizontal or
Vertical can be enabled at one time, but not both.
Vertical – Adds vertical line measurement to display profile of
temperature along the vertical line. Designated by LV. Either
Horizontal or Vertical can be enabled at one time, but not both.
Area – adds up to 3 area boxes, with min, max or average detection
within each box. Areas can be sized and moved by the user.
Designated by []1, []2 and []3.
! NOTE: To delete a single object, press A key to select the object and
then press C key to delete.
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4.3 Auto/Manually
By adjusting the temperature and color corresponding relation, users can
observe enhanced image quality and easily find and analyze thermal fault.
There are two operational modes Auto/Manually available.
Press Menu key to activate the main menu and select Auto/Manually. The
low-level menu will display the inactive mode followed by a “?”. Pressing the >
key followed by the Confirm key will switch to the displayed mode. Press A
key to select palette or adjust it manually.
In Auto mode, the camera automatically determines the low and high
temperature levels to assign to the lower and upper ends of the palette. In
Manually mode, the Operator may assign the lower and upper end values to
enhance the image quality by adjusting the temperature to color relationship.
In Manually mode pressing the left or right arrow will reduce or
increase the Span and pressing the up or down arrow will reduce or
increase the Level.
4.4 Setup menu
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4.4.1 Measuring Setup
Press Menu key to activate the main menu. Select Setup->MeasureSet
and press Confirm key to pop up the Measuring Setup dialog box. User can
view or set temperature range, lens type, temperature unit, ambient
temperature, reference type and reference temperature. Press Up and Down
keys to choose different items, Left and Right keys to modify the item
contents.
Temp Range：Select Temp Range according to target temperature
LT7-P low Temp Range（-20°/180°C）or high Temp Range（100°/600°C）
LT3-P（-20°/350°C）
Lens: Select Standard, Telephoto or Wide Angle. A mark will
display when Telephoto or Wide Angle is selected.
Temperature unit: Select between °C, °F and K scales.
Ambient temperature ： Camera will display internal ambient
temperature automatically. Used for automatic calibration and is not
user editable.
Reference type： When Ref Type is “On”, the temperature of the
measured object displayed by the cursor on the screen is the
difference from the selected reference or the reference temperature
set below.
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Reference temperature：When Ref Temp is enabled, this item is
editable. A fixed temperature may be entered as the reference
temperature, or select a measurement object in “Ref Temp”.
4.4.2 Adjustment setup
Press Menu key to activate the main menu. Select Setup->Adjustment
and press Confirm key to pop up the Adjustment dialog box. User may set
emissivity, temperature correct and ambient temperature. Press Up and
Down keys to choose different items, Left and Right keys to modify the item
contents.
Emissivity ： The emissivity of a given material will vary with
temperature and surface finish. If not set manually, system will use
the default value. Appendix A provides emissivities of common
materials.
Customize：Select material from pre-defined list via left and right
keys.
Correct：Temperature correction setup.
Ambient temperature: when Ambient Temp is enabled, user can
input the value of ambient temperature.
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4.4.3 Analysis setup
Press Menu key to activate the main menu. Select Setup->Analysis
setup and press Confirm key to pop up the Analysis dialog box. User can set
temperature alarm, alarm temperature, alarm color, isotherm color, isotherm
temperature and isotherm width. Press Up and Down keys to choose menu
items, Left and Right keys to modify the item contents.
An alarm is triggered when a measurement cursor’s measurement meets
or exceeds the Set Alarm Temp setting. All pixels above this temperature will
change to the color as set in Alarm Color. When the Alarm Color is set to
None, only the audible alarm will sound. When using alarms with Area
measurements, the selected measurement mode, Min, Max or Average will
have to meet or exceed the set temperature in order to trigger the alarm.
Temp Alarm： Off disables alarm function, On enables alarm function
and allows setting of Set Alarm Temp and Alarm Color.
Alarming Temp: Sets the alarm detection temperature. Only enabled
when Temp Alarm is set to On.
Alarming Color: Selects the color in which the alarming pixels are
displayed. If set to None, no changes are made to the screen’s color.
Only enabled when Temp Alarm is set to On.
Isotherm Color：Activates the Isotherm display by displaying the
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image in the set temperature range by the specified color. Setting to
Off, disables the feature.
Isotherm Temp：Sets the center temperature of the isotherm.
Isotherm Width： Sets the width of the displayed Isotherm band. For
example, if Isotherm Temp is set to 122°F (50°C) and Isotherm
Width is set to 1°C, the isotherm band will be from 121.5F (49.5°C) to
122.5°F (50.5°C).
4.4.4 Date/Time setup
Allows the user to set the system date and time. After setting, the camera
will save the current setting.
Press Menu key to activate the main menu. Select Setup->Date/Time
and press Confirm key to open the Date/Time dialog box. User can set Year,
Month, Day, Hour, Minute and Second. Press Up and Down keys to choose
menu items, Left and Right keys to modify the item contents.
! NOTE: If the imager is not used for a long period, the system clock
may need reset due to the internal battery being depleted.
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4.4.5 System setup
Press Menu key to activate the main menu. Select Setup->Sys. Setup
and press Confirm key to open the System Setup dialog box. User can set
Language, Auto calibration, LCD brightness, Trigger assignment, Video mode,
Standby time and Auto off time. Press Up and Down keys to choose menu
items, Left and Right keys to modify the item contents.
Language: Select system language from 11: English, Spanish,
French, German, Italian, Portuguese, Korean, Japanese,
Russian, Simplified Chinese and Traditional Chinese.
Auto Calibration: Select Auto Calibration and press right arrow key,
Auto Calib mode dialogue box will pop up. User can select from 3
modes: long, short or customize. Customize can guide user to set
the time interval for auto calibration. Range is 0, which is Off and 30 to
600 in 1 second increments. Auto calibration is used to improve image
quality and measurement accuracy during use.
LCD Brightness: User can select the brightness of LCD display with
choices being 20, 40, 60 80 and 100%.
Trigger: User can define the trigger key function from Laser, Spot
Temp, Area Temp, Save key and IR/CCD.
Laser: Allows user to Turn on and turn off the laser sight.
Spot Temp: Adds or deletes Spot Measurement.
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Area Temp: Adds or deletes Area Measurement.
Save key: Initiates the save routine.
IR/CCD：Switches between IR image and CCD image.
Video Mode: Allows selection of PAL or NTSC video output.
Standby Time：Allows user to select None, 2, 5, 10 or 15 minutes.
If no button depressions are made during the set time, the camera will
turn off the screen automatically, to prolong battery life. Press any key
except power key to reactivate the screen. If set to None, the function
is disabled.
AutoOffTime： Allows user to select None, 2, 5, 10 or 15 minutes. If
no button depressions are made during the set time, the camera will
turn off the main power automatically to prolong battery life. If set to
None, the function is disabled. When StandbyTime is enabled,
AutoOffTime will start calculating from StandbyTime.
4.4.6 System Info
Press Menu key to activate the main menu. Select Setup->Sys. Info and
press Confirm key to open the System Information dialog box. It displays
the Model number, Serial number, Version number and Date of Manufacture.
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4.4.7 Factory Default
It is used for resetting factory defaults. Press Menu key to activate the
main menu. Select Setup->Default and press Confirm key to open the
Reset dialog box. Press Confirm key to reset the factory default. Press C key
to cancel the reset operation. Appendix B indicates the detailed factory default
parameter table.
NOTE: Default Reset function will delete all parameters defined by
user.
NOTE: Restoring Default settings will NOT delete images stored on
the TF card.
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4.5 File
4.5.1 Open
Press Menu key to activate the main menu. Select File->Open, press
Confirm key to open the saved images. Press Left and Right keys to change
the images. Press C key to exit the opened image and return to measurement
status. The imager will open the last image displayed or the last image saved,
whichever occurred last.
[1] Current file name, created by Imager.
[2] Current displayed image file number
[3] Total number of images currently stored
1 2 3
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4.5.2 Save
It is used for saving the image, performs the same functionality as the
Save key. Press Menu key to activate the main menu. Select File->Save,
press Confirm key to save the current image into the TF card or highlight
Cancel and press Confirm key to cancel Save operation. Alternatively, the C
key may be pressed to cancel. Saving Data will display.
With Voice Save set in Save Settings menu, if Voice Save was On,
Recording will start. Speak clearly into the microphone on the control panel.
Record function allows up to 60 seconds of recording time and may be stopped
at any time by pressing the Confirm key.
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If the TF card is not installed, the display will prompt the user to install a
SD card.
The Display will acknowledge when the TF card is installed properly.
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4.5.3 Save Setting
The Save Setting menu allows enable/disable of the CCD Camera and voice
recording. Press Confirm key to activate the main menu. Select File->Save
Setting, press Confirm key to display the Save Setting dialog box. Press Up
and Down keys to choose the option. Press Left and Right keys to set On or
Off.
Link Save - With Link Save “On”, the imager will always save an IR image
and a CCD image with every save operation. With Link Save “off”, the imager
will only save whichever image the camera is viewing at the time of the save.
! NOTE: When Imager is in the visible camera mode, thermal detector
calibration does not occur and may result in lower accuracy images when
saved. Always save thermal images with thermal camera active, when Link
Save is ON.
! NOTE： When Imager is in Link Save Mode, a prompt “Please do now move
when in link save CCD image previewing” will pop up. Then thermal image is
switched to CCD image, user confirm two images whether consistent. After
confirm Save, thermal image is back again.
Voice Save – With Voice Save “On”, the imager will start the voice record
cycle after confirmation of the save image. No recording will occur with Voice
Save set to “Off”. Voice save setting is ignored with the Auto Save function.
! NOTE: To add voice comment to an image, enable Voice Save, open the
image to be modified and select File>Save. The imager will prompt you to
record the message and the new image will be assigned a new image number
while the old image will remain unchanged.
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4.5.4 Auto Save
Auto Save allows the camera to automatically save images at a
user-specified interval. Voice annotation is inactive with Auto Save. With Auto
Save set to 0 the function is disabled. To enable, select 10 to 3600 seconds (1
hour), in 1-second increments. To set, press Menu key to activate the main
menu. Select File->Auto Save, press Confirm key to display the Auto Save
dialog box. Press Left and Right keys to set the values. Press the Confirm
key to accept and recording timer will start saving images at the selected
interval.
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4.5.5 Delete
Used for deleting the image. When camera is in image replay mode, press
Menu key to activate the main menu, select File->Delete, press Confirm key
to pop out the below prompt box. Press Confirm key to delete the current
opened image. If it has voice comment, it will be deleted together. Press C key
to cancel the deletion.
! CAUTION: Before deleting, make sure the file is not needed or
already backed up. Files cannot be recovered after deletion.
4.5.6 Format
Format is used for formatting the TF card. Press Menu key to activate the
main menu. Select File->Format and press Confirm key to pop up the below
dialog box. Press Confirm key to do format; press C key to cancel the format.
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! CAUTION: Before formatting, make sure all files are not needed or
already backed up. Data cannot be recovered after formatting. If
formatting via PC, please use FAT16 format.
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5 Technical specifications
Items
Technical Specification
LT3-P
LT7-P
Detector
characteristics
Detector type
Un-cooled FPA micro-bolometer
Array size/format
160×120
384x288
Image
characteristics
Field of view/min
focus distance
25°× 19°/0.1m
Spatial resolution
（IFOV）
2.72mrad
1.36mrad
Thermal sensitivity
≤0.06℃@30℃
Frame frequency
50/60Hz
Focus
Manual
Zoom
X2
Spectral range
8-14um
Built-in CCD camera
1.3 million pixels
Image display
LCD display
3.5" TFT LCD, 640 x 480
Measurement
Temperature ranges
-20℃- +350℃
(can expanded to
650℃)
-20℃- +650℃
(can expanded to
1200℃)
Accuracy
± 2 °C or ± 2% of reading, Whichever
is greater
Measurement
correction
Automatic / manual
Measurement mode
Up to 4 movable spots. Up to 3
movable areas (maximum, minimum
and average temperatures). Up to 2
movable lines. Line profile. Isotherms.
Temperature difference. Alarm(voice,
color)
Image control
Color palette 11palettes changeable
Image adjustment Auto/manual gain
and brightness
Setup functions
Date/time, temperature unit,
language
Emissivity correction
Variable from 0.01 to 1.0
Background
temperature
correction
Automatic corrections according to
user input
Atmospheric
transmission
correction
Automatic correction according to user
input object distance, humidity and
temperature
Image storage
Storage card
8G SD card, max 16G
Storage mode
Manual/Auto single file saving, IR and
Visual image link saving
File format
Thermal: JPEG with original
thermal measurement data included
Visual: JPEG
Voice annotation
Input via built-in microphone up to 60
seconds of digital voice clip per image
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stored with image
Laser pointer
Laser locator
Class 2, 1mw/635nm(red), IEC 60 285
Power source
Battery type
Li-Ion, rechargeable
Battery operating
time
4 hours continuous operation
Battery charging
mode
Intelligent charger or power adaptor
12V(optional) to random charge
Power saving
Auto-sleep and auto-shut down
External power
10-15V DC
Environment
Operating
temperature
-15℃-- +50℃
Humidity
Operating and storage：≤90％
non-condensing
Encapsulation
IP54
Drop test
2m
Physical
characteristics
Weight
980g
Dimension
105*245*230mm
Interface
SD card slot
Micro SD card slot
External DC input
YES
Video output
YES
USB
Image, measurement data transfer
The information contained in this document is subject to change without
notice.
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Troubleshooting
Please follow the table below to diagnose and correct the problem. If
problem still exists, please contact our service department （400-887-1897）.
Problem
Cause & Solution
The camera does not
power on.
Battery not installed or installed
incorrectly
→Install battery or re-install battery
Battery is out of power.
→Change battery.
“Power off” protection is enabled
→Wait for 5 seconds and reboot.
The camera powers off
automatically.
Battery is out of power.
→Change battery
Auto Off Time option is enabled
→Set as None.
Battery depletion is too fast
Environmental temperature is too low
Rechargeable battery is not charged
completely.
→Recharge the battery.
Rechargeable battery is out of power
completely and cannot be recharged.
→Change to new battery.
No thermal image
Lens cover is not removed.
→Remove lens cover.
In image freeze status
→Press C key to exit.
Thermal image is white-black.
White-black palette is selected
→Select normal palette.
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Appendix A
Common material emissivity（FYI）
Material
Surface
Temperature°C
Emissivity（ε）
Aluminum
Non- oxidized
100
0.20
Oxidized
100
0.55
Brass
Burnished to Brown
20
0.40
Dull luster
38
0.22
Oxidized
100
0.61
Copper
Seriously Oxidized
20
0.78
Iron
Oxidized
100
0.74
Rusty
25
0.65
Cast iron
Oxidized
200
0.64
Non- Oxidized
100
0.21
Wrought iron
Quarry-faced
25
0.94
Polished
38
0.28
Nickel
Oxidized
200
0.37
Stainless steel
Oxidized
60
0.85
Steel
Oxidized
200
0.79
Common brick
Surface
20
0.93
Concrete
Surface
20
0.92
Glass
Polished plate
20
0.94
Lacquer
White
100
0.92
Black
100
0.97
Carbon
Smoke black
25
0.95
Candle soot
20
0.95
Rough lead surface
20
0.98
Oil paint
Value of 16 colors
100
0.94
Paper
White
20
0.93
Sand soil
Surface
20
0.90
Timber
Dressed
20
0.90
Water
Distilled water
20
0.96
Skin
Human
32
0.98
Ceramic
Thin
21
0.90
Thick
21
0.93
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Appendix B
Factory default parameter setting table
Table.1 Measurement temperature setting table
Parameter
Value
LT3-P
LT7-P
Temperature Range
-20 ~ 350°C
-20 - 180°C
Lens
Standard
Temp Unit
°C
Ref Type
Off
Ref Temp
30°C
Table.2 Measurement temperature correction table
Parameter
Value
Emissivity
0.96
TCorrect
0°C
TAmbient Temp
Off
Table.3 Analysis setting table
Parameter
Value
Temp Alarm
Off
Alarming Temp
50.0°C
Alarming Color
None
Isotherm Color
Off
Isotherm Temp
50.0°C
Isotherm Width
1.0°C
Table.4 System setting table
Parameter
Value
Language
English
Brightness
60S
Auto Calib
60%
Video Mode
Laser sight
Quick Access
NTSC
StandbyTime
5 mins
AutoOffTime
15 mins
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