TESTO 872 User manual

testo 872 thermal imager
Instruction manual
Analysis software
testo IRSoft
testo Thermography App
Use the testo IRSoft software to
analyze your thermal images
extensively and in detail, and to
create professional reports. You can
download the software free of charge
and licence-free via the following link:
Use the testo Thermography App to
transfer thermal images live to your
smartphone/tablet and create quick
analyses and simple reports directly
on site.
Download the app free of charge for
Android or iOS from the app store:
www.testo.com/irsoft
testo Thermography
App

Contents
Contents
1Safety and disposal .....................................................................................3
1.1 About this document...............................................................................3
1.2 Security..................................................................................................3
1.3 Disposal .................................................................................................4
2Technical data..............................................................................................5
2.1 Bluetooth module ...................................................................................5
2.2 General technical data ...........................................................................5
3Description of the instrument.....................................................................9
3.1 Use.........................................................................................................9
3.1 Instrument / operating elements overview..............................................9
3.1 Displays overview.................................................................................10
3.2 Power supply........................................................................................11
4Operation....................................................................................................12
4.1 Commissioning.....................................................................................12
4.2 Switching instrument on and off ...........................................................12
4.3 Getting to know the menu ....................................................................13
4.4 Quick select button...............................................................................14
5WLAN connection - using the App...........................................................16
5.1 Activating/disabling the connection ......................................................16
5.2 Using the App.......................................................................................17
5.2.1 Establishing a connection......................................................17
5.2.2 Select display ........................................................................17
6Bluetooth®connection...............................................................................18
7Performing the measurement ...................................................................19
7.1 Setting measuring functions.................................................................20
7.1.1 Activating/disabling Pixel mark ..............................................20
7.1.2 Activating/disabling Min/Max on area ....................................21
7.1.3 Activating the differential temperature ...................................21
7.1.4 Activating external values......................................................22
7.1.5 Activating/disabling the zoom ................................................23
7.2 Activating/disabling the laser................................................................23
7.3 Saving an image...................................................................................23
7.4 Image gallery........................................................................................24
7.5 Setting the scale...................................................................................26
7.6 Setting emissivity and reflected temperature........................................28
7.6.1 Selecting the emissivity .........................................................30
7.6.2 Customizing the emissivity ....................................................30

Contents
7.6.3 Setting RTC ..........................................................................30
7.6.4 Setting ε-Assist......................................................................30
7.7 Selecting the colour palette .................................................................31
7.8 Image type...........................................................................................31
7.9 Configuration .......................................................................................31
7.9.1 Settings.................................................................................31
7.9.2 SuperResolution....................................................................32
7.9.3 Save JPEG ...........................................................................33
7.9.4 Connectivity ..........................................................................33
7.9.5 Configure key........................................................................34
7.9.6 Ambient conditions................................................................34
7.9.7 Info........................................................................................34
7.9.8 Certificates............................................................................35
7.9.9 Fullscreen mode....................................................................35
7.9.10 Reset options........................................................................35
8Maintenance...............................................................................................37
8.1 Charging the rechargeable battery ......................................................37
8.2 Changing the rechargeable battery......................................................37
8.3 Cleaning the instrument.......................................................................39
8.4 Firmware update..................................................................................40
8.4.1 Performing an update using IRSoft.......................................40
8.4.1.1 Preparing the camera...........................................40
8.4.1.2 Performing an update...........................................40
8.4.2 Performing an update with the camera .................................41
8.4.2.1 Preparing the camera...........................................41
8.4.2.2 Performing an update...........................................41
9Tips and assistance .................................................................................. 42
9.1 Questions and answers .......................................................................42
9.2 Accessories and spare parts................................................................42
10 Authorisations and certification...............................................................43

1 Safety and disposal
3
1 Safety and disposal
1.1 About this document
•The instruction manual is an integral part of the instrument.
•Keep this documentation to hand so that you can refer to it when necessary.
•Always use the complete original instruction manual.
•Please read this instruction manual through carefully and familiarize yourself
with the product before putting it to use.
•Hand this instruction manual on to any subsequent users of the product.
•Pay particular attention to the safety instructions and warning advice in order
to prevent injury and damage to the product.
1.2 Security
General safety instructions
•Only operate the product properly, for its intended purpose, and within the
parameters specified in the technical data.
•Do not apply any force.
•Do not operate the instrument if there are signs of damage on the housing,
mains unit or connected cables.
•Dangers may also arise from objects to be measured or the measuring
environment. Always comply with the locally valid safety regulations when
carrying out measurements.
•Do not store the product together with solvents.
•Do not use any desiccants.
•Only perform maintenance and repair work on this instrument that is
described in this documentation. Follow the prescribed steps exactly when
doing the work.
•Use only original spare parts from Testo.
•Only use the original mains unit from Testo.
•During operation, this instrument must not be pointed at the sun or other
intensive sources of radiation (e.g. objects with temperatures exceeding
650 °C). This can cause serious damage to the detector. The manufacturer
does not provide any warranty for any such damage to the microbolometer
detector.
Batteries

1Safety and disposal
4
•Improper use of batteries may cause the batteries to be destroyed, or lead to
injury due to current surges, fire or escaping chemicals.
•Only use the batteries supplied in accordance with the instructions in the
instruction manual.
•Do not short-circuit the batteries.
•Do not take the batteries apart and do not modify them.
•Do not expose the batteries to heavy impacts, water, fire or temperatures in
excess of 60 °C.
•Do not store the batteries in the proximity of metal objects.
•In the event of contact with battery acid: rinse affected areas thoroughly with
water, and if necessary consult a doctor.
•Do not use any leaky or damaged batteries.
•Only charge the rechargeable battery in the instrument or in the
recommended charging station.
•Immediately stop the charging process if this is not completed in the given
time.
•Take the rechargeable battery out of the instrument immediately if it is not
functioning properly or if it shows signs of superheating. Rechargeable
battery may be hot!
•When not in use for a long period of time, take the rechargeable battery out
of the instrument to prevent exhaustive discharge.
Warnings
Always pay attention to any information denoted by the following warnings.
Implement the precautionary measures specified!
Display
Explanation
WARNING
Indicates possible serious injury.
CAUTION
Indicates possible minor injury.
ATTENTION
Indicates possible damage to equipment.
1.3 Disposal
•Dispose of faulty rechargeable batteries and spent batteries in accordance
with the valid legal specifications.
•At the end of its useful life, deliver the product to the separate collection
point for electric and electronic devices (observe local regulations) or return
the product to Testo for disposal.

2 Technical data
5
2 Technical data
2.1 Bluetooth module
The use of the wireless module is subject to the regulations and
stipulations of the respective country of use, and the module may only
be used in each case in countries for which a country certification has
been granted.
The user and every owner undertake to adhere to these regulations and
prerequisites for use, and acknowledge that the re-sale, export, import,
etc. in particular in, to or from countries without wireless permits, is their
responsibility.
2.2 General technical data
Infrared image output
Feature
Values
Infrared resolution
320 x 240
Thermal sensitivity (NETD)
< 50 mK
Field of view (FOV) / min.
focusing distance
42° x 30° / <0.5 m
Geometric resolution (IFOV)
2.3 mrad
SuperResolution
640 x 480 pixels / 1.3 mrad
IR image refresh rate
9 Hz
Spectral range
7.5 - 14 µm
Visual image output
Feature
Values
Image size / min. focusing
distance
5.0 MP / <0.5 m
Focus
Fixed focus

2Technical data
6
Image presentation
Feature
Values
Display
8.9 cm (3.5") TFT, QVGA (320 x 240 pixels)
Digital zoom
2x, 3x, 4x
Display options
- Infrared image
- Real image
Colour palettes
10 options:
- Blue/red
- Grey
- Inverted grey
- Cold-hot
- Iron
- Iron HT
- Rainbow
- Rainbow HC
- Sepia
- Testo
Measurement
Feature
Values
Measuring range
--30 to +100 °C; 0 to +650 °C, manual or
automatic switch-over
Accuracy
--30 to -20 °C: ±3 °C, otherwise ±2 °C, ±2 % of
measured value
ɛ-Assist
included
Emissivity/reflected
temperature adjustment
0.01 to 1/manual
Analysis functions
- Center spot
- Laser detection
- Hot/cold spot detection
- Delta T
- Area measurement (min/max on area)
IFOV warner
Included in the scope of delivery
testo ScaleAssist
Included in the scope of delivery
Humidity measurement
Manual or with testo 605i thermohygrometers
Electrical mode
Manual input of current, voltage or power or
automatic transmission of data from the
testo 770-3 clamp meter via Bluetooth
Solar mode
Manual input of the solar radiation value
Imager features

2 Technical data
7
Feature
Values
Digital camera
Included in the scope of delivery
Fullscreen mode
Included in the scope of delivery
Save JPEG
Included in the scope of delivery
Video streaming
via USB
Interfaces
USB 2.0 micro B
Laser not available in USA,
Japan, China
635 nm, class 2
WLAN Connectivity
Communication with the testo Thermography
App
Wireless LAN module (EU, EFTA, USA, AUS,
CDN, TR)
Bluetooth®
Transfer of data from testo 605i
thermohygrometer, testo 770-3 clamp meter
(optional)
Radio authorization in EU, EFTA, USA,
Canada, Australia, Turkey
Image storage
Feature
Values
File format
- .jpg
- .bmt
- Can export as
.bmp
.jpg
.png
.csv
.xls
Memory capacity
Internal mass storage
> 1000 images (without SuperResolution)

2Technical data
8
Power supply
Feature
Values
Battery type
Li-Ion rechargeable battery 2600 mAh / 3.63 V
Operating time
4.0 h @ 20 °C
Mains operation
Yes
Charging option
In instrument/in charging station (optional)
Charging time in the
instrument
Approx. 3 h with 2A mains unit supplied
Charging time in charging
station
Approx. 5 h via mains unit
USB interface
5V 1.8 A*
* Direct current
Ambient conditions
Feature
Values
Operating temperature
-15 to +50°C
Storage temperature
-30 to +60°C
Humidity
20 - 80 %RH, not condensing
Housing protection class
IP54* according to IEC 60529
Vibration
2 g
Max. Operating height
2000 m
* The product offers IP54 protection, but is not suitable for permanent outdoor
use.
Standards, tests
Feature
Values
EMC
2014/30/EU
RED
2014/53/EU
You can find the EU declaration of conformity on the Testo website,
www.testo.com, under the product-specific downloads.

3 Description of the instrument
9
3 Description of the instrument
3.1 Use
The instrument is a handy, robust thermal imager. You can use it to undertake
the non-contact measurement and display of surface temperature distribution.
Areas of application
•Building inspection: Energy efficiency rating of buildings (heating, ventilation,
air-conditioning trade, building engineers, engineering firms, experts)
•Production monitoring / quality assurance: monitoring of production
processes
•Preventive maintenance / servicing: Electrical and mechanical inspection of
systems and machines
3.1 Instrument / operating elements
overview
Element
Function
1
Display
Displays infrared and real images, menus and
functions
2
Interface terminal
Contains micro USB interface for power supply
and connection to the computer
3
- key
- Esc key
- Switch camera on and off
- Cancel action
4
- OK key
- Joystick
- Open menu, select function, confirm setting
- Navigate within the menu, highlight function,
select colour palette
5
Quick select button
Opens the function assigned to the quick select
button; the icon for the selected function is
displayed bottom right

3Description of the instrument
10
Element
Function
6
Infrared camera lens;
protective cap
Takes infrared images; protects the lens
7
Digital camera
Takes real images
8
Laser
Marking of the measuring point
9
Trigger
Saves the displayed image
10
Battery compartment
Contains the rechargeable battery
CAUTION
Laser radiation! Class 2 laser
-Do not look into the laser beam
Laser can be activated with the Remote function, also via smartphone
or tablet.
3.1 Displays overview
Element
Function
1
Status bar
In the status bar, values are displayed depending
on the setting.

3 Description of the instrument
11
Element
Function
2
Battery capacity / charge status:
: Battery operation, capacity 75-100%
: Battery operation, capacity 50-75%
: Battery operation, capacity 25-50%
: Battery operation, capacity 10-25%
: Battery operation, capacity 0-10%
: Mains operation, battery is charging
3
Image display
IR image or real image display
4
°C or °F
Unit set for reading and scale displays
5
Scale
- Temperature unit
- temperature margin of the image displayed,
showing the minimum/maximum reading (with
automatic scale adjustment) or the selected
minimum/maximum display value (with
manual scale adjustment)
6
E ...
Emissivity set
7
A, M or S
A - automatic scale adjustment
M - manual scale adjustment
S - ScaleAssist is enabled
3.2 Power supply
The power is supplied to the instrument via a replaceable rechargeable battery
or the mains unit provided (battery must be inserted).
With an attached mains unit, power is supplied automatically via the mains unit
and the rechargeable battery is charged (only at ambient temperatures from 0 to
40°C). Operation is possible with the mains unit connected.
It is also possible to charge the battery using a charging station (accessory).
The instrument is equipped with a buffer battery to maintain the system data
during an interruption in the power supply (e.g. when the battery is changed).

4Operation
12
4 Operation
4.1 Commissioning
Please refer to the commissioning instructions supplied for testo 865, 868, 871,
872 (0973 8720).
4.2 Switching instrument on and off
Switching on the camera
1
- Remove protective cap from the lens.
2
- Press .

The camera starts.

The start screen appears on the
display.
To ensure measuring accuracy, the camera performs automatic zeroing
approx. every 60 s. A “click” is heard when this happens. The image
freezes briefly when this occurs. Zeroing is carried out more frequently
during the camera warm-up period (takes approx. 90 seconds).
During the warm-up period no measuring accuracy is guaranteed. The
image can already be used for indication purposes and saved.

4 Operation
13
Switching off the camera
1
- Press and hold down until the
progress bar is complete.

The display goes off.

The camera is switched off.
4.3 Getting to know the menu
1
- Press OK to open the Menu.
2
- Move the joystick to highlight a
function (orange border).
3
- Press OK to select the function.

4Operation
14
3.1
- Return to the main menu: Select Menu and move the joystick to the
left or press Esc.
4.4 Quick select button
The quick select button is another navigation option that you can use to call up
certain functions simply at the touch of a button.
Quick select menu items
Menu item
Function
Image gallery
Opens an overview of saved images.
Scale
This function is only available if
the Image type is set to
infrared
Set scale limits.
Emissivity
This function is only available if
the Image type is set to
infrared
Set emissivity (E) and reflected temperature
(RTC).
Palette
Toggles the palette selection.
Adjustment
This function is only available if
the Image type is set to
infrared
Carries out manual zeroing.
Image type
Alternately switches the image display
between infrared and real image.
Laser
Activates the laser pointer.
Zoom
enlarges the image section (2x, 3x, 4x)

4 Operation
15
Changing assignment of quick select button
1
- Move the joystick to the right.

The Configure key selection menu
appears.

The activated function is marked with
a dot ( ).
2
- Move the joystick up/down until the
orange box appears around the
required menu item.
- Press OK.

The quick select button is assigned to
the selected menu item.

The icon for the selected function is
displayed bottom right.
Using the quick select button
1
- Press .

The function assigned to the quick
select button is carried out.

5WLAN connection - using the App
16
5 WLAN connection - using the App
5.1 Activating/disabling the connection
To connect via WLAN, you need a tablet or smartphone with the
testo Thermography App already installed on it.
You can get the App from the App Store for iOS devices or from the
Play Store for Android devices.
Compatibility:
Requires iOS 8.3 or later / Android 4.3 or later.
1
- Open Menu.
2
- Select Configuration.

The Configuration menu opens.
3
- Select Connectivity.
4
- Select WLAN.

When connecting for the first time, you will be asked for a password.
This is "thermography" by default.

A check mark appears when WLAN is enabled.
While WLAN is activated, the image gallery cannot be accessed.
Explanation of WLAN icons
Symbol
Function
App is connected
No connection to the App

5 WLAN connection - using the App
17
5.2 Using the App
5.2.1 Establishing a connection
✓
WLAN is enabled in the thermal imager.
1
- Smartphone/tablet → Settings → WLAN settings → camera is
shown with serial number and can be selected.
2
- Press Connect.

The WLAN connection to the thermal imager is established.
5.2.2 Select display
Second display
✓
The WLAN connection to the thermal imager is established.
1
- Selection → 2nd display.

The display on the thermal imager is shown on your mobile end
device.
Remote
✓
The WLAN connection to the thermal imager is established.
1
- Selection → Remote.

The display on the thermal imager is shown on your mobile end
device. The thermal imager can be controlled and settings made via
the mobile terminal device.
Gallery
✓
The WLAN connection to the thermal imager is established.
1
- Selection → Gallery.

The saved images are displayed and can be managed.

6Bluetooth® connection
18
6 Bluetooth®connection
A connection between the thermal imager and the testo 605i humidity probe or
testo 770-3 clamp meter can be established via Bluetooth®.
Bluetooth®4.0 required
1
- Open Menu.
2
- Move the joystick and select Configuration.
- Press OK.
3
- Move the joystick down and select Connectivity.
- Press OK.
4
- Select Bluetooth®and press OK to enable (a check mark appears
when Bluetooth®is enabled).
Explanation of Bluetooth®icons
Symbol
Function
No connection to the probe
Searching for probe.
Probe readings are being transmitted.
Before a value can be displayed, the corresponding measurement
setting for clamp meter or humidity probe must be selected.
When connected to the clamp meter

Clamp meter readings are displayed in the header.
Readings are only transferred if the current, voltage or power is set on
the clamp meter.
When connected to the humidity probe

The thermal imager switches automatically to humidity measurement.
If a WLAN connection is enabled in addition, the Bluetooth data transfer
is continued. However, it is not possible to establish a new connection
to a probe.