TESTO 876 User manual

testo 876 · Thermal imager
Instruction manual
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1 Contents
3
1Contents
1Contents ...................................................................................................3
2Safety and the environment....................................................................4
2.1. About this document ........................................................................4
2.2. Ensure safety...................................................................................5
2.3. Protecting the environment..............................................................6
3Specifications ..........................................................................................7
3.1. Use ..................................................................................................7
3.1. Technical data .................................................................................8
4Product description...............................................................................12
4.1. Overview........................................................................................12
4.2. Basic properties.............................................................................14
5First steps ..............................................................................................15
5.1. Commissioning ..............................................................................15
5.2. Getting to know the product...........................................................17
6Using the product..................................................................................21
6.1. Menu functions ..............................................................................21
6.1.1. Measuring functions....................................................................................... 21
6.1.2. Image gallery .................................................................................................24
6.1.3. Scale..............................................................................................................25
6.1.4. Display...........................................................................................................26
6.1.5. Emissivity.......................................................................................................26
6.1.6. Palette ...........................................................................................................29
6.1.7. Configuration .................................................................................................29
6.2. Measuring......................................................................................32
7Maintaining the product ........................................................................35
8Tips and assistance...............................................................................37
8.1. Questions and answers .................................................................37
8.2. Accessories and spare parts .........................................................38
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2 Safety and the environment
4
2Safety and the environment
2.1. About this document
Use
> Please read this documentation through carefully and
familiarize yourself with the product before putting it to use. Pay
particular attention to the safety instructions and warning advice
in order to prevent injuries and damage to the products.
> Keep this document to hand so that you can refer to it when
necessary.
> Hand this documentation on to any subsequent users of the
product.
Warnings
Always pay attention to information that is marked by the following
warnings with warning pictograms. Implement the specified
precautionary measures.
Representation Explanation
CAUTION indicates circumstances that may lead to
damage to the products
Symbols and writing standards
Represen-
tation
Explanation
Note: Basic or further information.
1. ...
2. ...
Action: more steps, the sequence must be followed.
> ... Action: a step or an optional step.
- ... Result of an action.
Menu Elements of the instrument, the instrument displays
or the program interface.
[OK] Control keys of the instrument or buttons of the
program interface.
... | ... Functions/paths within a menu.
“...” Example entries
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2 Safety and the environment
5
2.2. Ensure safety
> Only operate the product properly, for its intended purpose and
within the parameters specified in the technical data. Do not
use any force.
> Do not operate the instrument if there are signs of damage at
the housing, mains unit or feed lines.
The thermal imager must not be directed at the sun or other
sources of intense radiation (e.g. objects with temperatures greater
than 500 °C) during operation. This may lead to serious damage to
the detector. The manufacturer accepts no warranty for this type of
damage to the detector.
> The objects to be measured or the measurement environment
may also pose risks: Note the safety regulations valid in your
area when performing the measurements.
> Do not store the product together with solvents. Do not use any
desiccants.
> Carry out only the maintenance and repair work on this
instrument that is described in the documentation. Follow the
prescribed steps exactly. Use only original spare parts from
Testo.
> Improper use of rechargeable batteries can lead to destruction
or injuries by means of current surges, fire or escaping
chemicals. The following instructions must be observed to avoid
such hazards:
• Only use in accordance with the directions in the instruction
manual.
• Do not short, take apart or modify.
• Do not expose to heavy impacts, water, fire or temperatures
above 60 °C.
• Do not store in the proximity of metal objects.
• Do not use leaky or damaged rechargeable batteries. In the
event of contact with battery acid: Thoroughly wash affected
area with water and consult a doctor, if necessary.
• Only charge in the instrument or the recommended charging
station.
• Immediately stop the charging process if this is not
completed in the given time.
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2 Safety and the environment
6
• In the event of improper function or signs of overheating,
immediately remove the rechargeable battery from the
measuring instrument/charging station. Caution:
Rechargeable battery may be hot!
2.3. Protecting the environment
> Dispose of faulty rechargeable batteries/spent batteries in
accordance with the valid legal specifications.
> At the end of its useful life, send the product to the separate
collection for electric and electronic devices (observe local
regulations) or return the product to Testo for disposal.
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3 Specifications
7
3Specifications
3.1. Use
The testo 876 is a handy and robust thermal imager. It opens the
door to contactless determination and illustration of the temperature
distribution on surfaces for you.
Typical areas of application are:
• Building inspection: Energetic assessment of buildings,
inspection of heating, ventilation and air conditioning systems.
• Preventative maintenance (servicing): Mechanical and electrical
inspection of systems and machines
• Production monitoring (quality assurance): Monitoring
production processes
Basic properties:
• High-quality wide-angle lens 32° x 23, detector 160 x 120,
manual focus, 2 GB SD card for approx. 1000 images, minimum
focus distance 10 cm, integrated digital camera, dynamic
motorfocus, exchangeable lens, display of surface moisture
distribution
Export control
Thermal imagers may be subject to the export restrictions of the
European Union.
Please observe the national regulations for export control when
exporting.
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3 Specifications
8
3.2. Technical data
Infrared image output
Characteristic Values
Field of vision/min.
focusing distance
Standard lens: 32° x 23°/0.1 m (0.33 ft)
optional:
9° x 7° / 0.5 m (1.64 ft)
Thermal sensitivity
(NETD)
<80mK at 30°C (86°F)
Geometric resolution Standard lens: 3.3 mrad
Telephoto lens: 1 mrad
Refresh rate 9Hz
Focus manual + motorized
Detector type FPA 160 x 120 pixels, a.Si
Spectral range 8 - 14 μm
Visual image output
Characteristic Values
Field of vision/min.
focusing distance
33.2° x 25.2° / 0.4m (1.31ft.)
Image size 640 x 480 pixels
Refresh rate 8 to 15 Hz
Image presentation
Characteristic Values
Image display 3.5" LCD with 320 x 240 pixels, Foldable by
90° and rotable by 180°
Display options Infrared image/real image/infrared and real
image
Video output USB 2.0
Video stream 9 Hz
Colour palettes 4 options
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3 Specifications
9
Measuring
Characteristic Values
Temperature range
(can be changed)
-20 - 100 °C/0 - 280°C (-4 - 212 °F/32 -
536°F)
Accuracy ±2 °C (±3.6 °F) or ±2 % of reading
(whichever is the greater)
Reproducibility ±1 °C (±1.8 °F) or ±1 % (whichever is the
greater)
Measuring point
minimum diameter
Standard lens: 10 mm at 1 m
Telephoto lens: 3 mm at 1 m
On-time (time to
image)
30 s
Measuring functions Standard measurement (1-point), Cold-/
Hotspot, Display of the surface moisture
distribution via manual entry of the
dewpoint, isotherm, min./max. on area
Image storage
Characteristic Values
File format .bmt
Export options in .bmp, .jpg, .csv
Removable memory SD card
Memory capacity Scope of delivery: 2 GB (approx. 1000
images)
Lens
Characteristic Values
Standard lens 32° x 23°
Telephoto lens 9° x 7°
Aperture 1.0
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3 Specifications
10
Audio functions
Characteristic Values
Sound
recording/playback
via headset (included in delivery)
Recording period max. 30 s per image
Housing
Feature Values
Housing material ABS and TPE
Housing fronts ABS and PC (nickel plated)
Power supply
Characteristic Values
Battery type Fast-charging, Li-ion battery can be
changed on-site
Operating time approx. 5 h at 20 - 30 °C (68 - 86 °F)
Charging option In instrument/in charging station (optional)
Mains operation Yes, with mains unit 0554 8808
Mains unit output
voltage
5 V/4 A
Ambient conditions
Characteristic Values
Operating
temperature
-15 - 40 °C (5 - 113 °F)
Storage
temperature
-30 - 60 °C (-22 - 140 °F)
Air humidity 20 - 80 %RH, not condensing
Enclosure rating of
the housing
IP54 (Interface terminals closed, battery
connected, lens mounted)
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3 Specifications
11
Physical features
Characteristic Values
Weight 900 g (including battery)
Dimensions 210 x 85 x 97mm (8.27 x 3.35 x 3.82")
Tripod mounting Yes, with adapter (included in delivery)
Vibration 2 G
PC software
Characteristic Values
System
requirements
Operating system Windows XP Service
Pack 3, Windows Vista or Windows 7
USB 2.0 interface
Standards, tests, warranty
Characteristic Values
EU Directive 2004/108/EC
Vibration IEC 60068-2-6
Warranty 2 years, warranty conditions: see website
www.testo.com/warranty
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4 Product description
12
4Product description
4.1. Overview
Product components
1[Motor focus controller]: for motorized focussing.
[Trigger]: for recording (freezing/saving) images.
2Lens digital camera: to record visual images
3Lens infrared camera: to record thermographic images.
Exchangeable lens.
4Rotating ring Manual focussing: for manual focussing.
5Lens lock ring
6Metric thread: To fasten a tripod
Do not use table tripods, danger of pipping over!
7[Motor focus switch]: to switch the motor ficus on/off.
8Battery compartment with battery shaft, buffer battery shaft,
memory card shaft
9 Wrist strap
10 Fixing ring for carrier belt
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4 Product description
13
11 Control keys:
Key Functions
[ ] Switch the camera on/off
[OK] and Joystick • Press [OK]:
Open menu, confirm selection/setting.
• [OK] move up / down / right / left
= Joystick-function:
Select functions, navigate
[Esc] Cancel action.
12 Interface terminal USB-interface, mains socket to connect the
supplied mains unit, headset socket, status LED
Status-LED: off (no mains unit connected), flashes (mains unit
connected and rech. batt. is being charged), lights (mains unit
connected and rech. batt. charging completed).
13 Left/right speed dialling key ["xy"]:Call up function. The display
shows which function is assigned to the speed dialling key.
14 Display, foldable by 90° and rotable by 180°
When the camera is switched on, the display remains
active even when folded in. It is recommended to use the
energy saving options to prolong the battery lifetime, see
Power-save options…, page 30.
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4 Product description
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4.2. Basic properties
Voltage supply
The power is supplied to the instrument via an exchangeable
rechargeable battery or via the included mains unit.
With an attached mains unit, the power is supplied automatically
via the mains unit and the instrument's rechargeable battery is
charged (only at ambient temperatures from 0 to 40 °C).
Under high ambient temperatures a longer charging time
may be required.
Charging the battery is also possible using a desktop charging
station (accessory).
The instrument is equipped with a buffer battery (type CR 1632) to
maintain the system data during an interruption in the power
supply (e.g. when the battery is changed).
File formats and file names
The images are saved according to the following pattern:
XX_YYYYY.ZZZ
XX: IV for infrared image with attached real image, VI for real
image.
YYYYY: 5-digit consecutive number (is reset when resetting to
factory settings, see Factory reset, page 31).
ZZZ (file extension): BMT for infrared image with attached real
image, BMP for real image.
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5 First steps
15
5First steps
5.1. Commissioning
Contact the rechargeable battery
The rech. batt. is included separately and must be inserted.
> Slide the rech. batt. completely into the battery shaft, until it
clicks into place.
-
T
h
e
- The camera starts automatically.
Perform basic settings
> Remove the protective film from the display.
- The start screen appears on the display.
- The Landeseinstellungen (Country settings) dialogue is
opened.
Instrument language (Language) and temperature unit (Unit) can
be set.
1. Move Joystick up/down to select the desired option.
- The selected option has an orange border.
2. Confirm the selection with [OK].
- The selected setting is highlighted orange ( ). The arrows ( )
show that the setting can be changed.
3. Move Joystick up/down to change the setting.
4. Confirm the entry with [OK].
5. Confirm the settings with Übernehmen (Apply).
6. Press [] to switch off the thermal imager.
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5 First steps
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Initial charging of rechargeable battery
The camera is delivered with a partially charged battery.
Completely charge the battery before use.
> Connect the country-specific adapter required for the existing
mains to the mains unit.
1. Open the cover of the interface terminal on the camera (1).
2. Connect the mains unit to the mains socket (2).
3. Connect the mains plug to a power socket.
- The camera starts automatically.
The rech. batt. can be recharged with the camera switched
on or off. This does by no means influence the time
required to charge the battery.
- Charging of the rech. batt. is started.
- The charge status is indicated by the status LED (3):
• LED flashes: Charging in process.
• LED lights: Battery charged, charging process finished.
4. Charge the rech. batt. completely, then disconnect the device
from the mains unit.
- After initial charging of the rech. batt. the camera is ready for
use.
Charging the battery is also possible using a desktop charging
station (accessory).
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5 First steps
17
5.2. Getting to know the product
Adjusting the hand strap
1. Open the velcro fastening.
2. Loosen the strap.
3. Match the hand strap by loosening or fastening the strap.
Insert the memory card
SDHC-cards (SD High Capacity) are not supported.
1. Open the rech. batt. cover on the underside of the camera.
2. Push the memory card (SD-card) into the card slot (1).
> To remove the memory card: Press on the memory card to
release the lock.
Mount/remove infrared protection glass
Installation:
1. Attach the protection glass fastened to the red mounting ring to
the lens and turn the mounting ring clockwise to the stop.
2. Remove the red mounting ring from the protection glass.
Removal:
1. Attach the red mounting ring to the protection glass.
2. Turn the mounting ring anticlockwise and remove the protection
glass.
After mounting/removing the protection glass, activate or deactivate
the Protection glass option, Optics... page 30. If this option is set
incorrectly, the stated measuring accuracy is not guaranteed.
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5 First steps
18
Changing lens
Only lenses that were adjusted to the respective thermal imager
can be used. The serial number on the lens must match the serial
number of the instrument, see Optics... page 30.
> Switch instrument off before changing the lens.
> To keep the lens from falling out: Hold the instrument with the
lens pointing up.
1. Turn lens lock ring anticlockwise to the stop (approx. 2 cm).
2. Remove lens.
3. Insert the new lens, thereby take care to align the white
markings on lens and instrument to each other.
4. Turn the lens lock ring clockwise to the stop.
Always store lenses not in use in the container designed for this in
the case.
> Turn the lens ring clockwise to the stop, place the lens in the
container and close it.
Switch the imager on/off
1. Remove protection cap from the lens.
2. Press [].
- The start screen appears on the display. The type designation
of the imager and the firmware version are shown.
- The measurement view is opened after the warm-up period.
- The imager performs an automatic zeroing approx. every 60
sec. This can be recognized by means of a "click". The image is
frozen briefly when this occurs.
> To switch off: Press [ ].
- The display goes out and the imager is switched off.
Manually focusing the image
> Turn Rotating ring of the lens until the image is in focus.
Focussing with the motor focus
> Slide the [Motor focus switch] towards the hand strap.
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5 First steps
19
> Move the [Motor focus controller], until the image is correctly
focussed.
Recording (freeze/save) an image
> Press [Trigger].
- The image is frozen (still).
If the image is to be saved, press the speed selection key [Folder]
to set the desired memory location, see Create new folder, page
24.
• The IR-image or the IR-/real image is displayed. Infrared image
is saved, real image is saved in the same file as an attachment
to the infrared image.
• Real image is shown: Real image is saved.
> Save image: Press [Trigger] once again, alternatively: Press
[OK].
or
discard the image: Press [ESC].
Getting to know the quick select buttons
The quick select buttons can be assigned functions that are
required often so that you can call them up directly.
Factory settings:
• Left quick select button: [Scale].
• Right quick select button: [Image type].
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5 First steps
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Changing assignment of the quick select buttons
1. Move Joystick left or right to open the Configure key function
list for the left or right quick select button.
2. Move Joystick up/down to select the desired function.
Function Description
Image type Change display mode: Infrared image, real
image or infrared/real image. 1
Palette Change colour palette for the infrared
image.
Emissivity... Set emissivity and reflected temperature.
Scale... Set scale limits.
Adjustment Perform manual zero point calibration.
3. Press [OK] to activate the selected function.
Navigating in the menu
1. Press [OK] button.
- The Menu is opened.
2. Select navigation/function:
• Move Joystick up or down to select the menu item.
• Press [OK] to confirm the selection. Or for menu items that
are marked with an arrow (►): Move Joystick to the right.
• Move Joystick to the left to return to the previous menu
level.
• Press [OK] to select the function.
• Press [ESC] to cancel the process and change to
Measuring Mode.
- Depending on the selected menu item, press [OK] to perform a
setting or open a submenu/dialogue, see Menu functions, page
21.
1Real image and infrared lens have a different angle of view due to the spacial
separation. The image areas therefore do not correspond completely (parallax
error).
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